diff options
Diffstat (limited to 'src/base/abci')
| -rw-r--r-- | src/base/abci/abc.c | 4058 | ||||
| -rw-r--r-- | src/base/abci/abcAttach.c | 405 | ||||
| -rw-r--r-- | src/base/abci/abcBalance.c | 239 | ||||
| -rw-r--r-- | src/base/abci/abcCollapse.c | 147 | ||||
| -rw-r--r-- | src/base/abci/abcCut.c | 190 | ||||
| -rw-r--r-- | src/base/abci/abcDsd.c | 539 | ||||
| -rw-r--r-- | src/base/abci/abcFpga.c | 267 | ||||
| -rw-r--r-- | src/base/abci/abcFraig.c | 586 | ||||
| -rw-r--r-- | src/base/abci/abcFxu.c | 259 | ||||
| -rw-r--r-- | src/base/abci/abcMap.c | 689 | ||||
| -rw-r--r-- | src/base/abci/abcMiter.c | 600 | ||||
| -rw-r--r-- | src/base/abci/abcNtbdd.c | 402 | ||||
| -rw-r--r-- | src/base/abci/abcPrint.c | 505 | ||||
| -rw-r--r-- | src/base/abci/abcReconv.c | 742 | ||||
| -rw-r--r-- | src/base/abci/abcRefactor.c | 354 | ||||
| -rw-r--r-- | src/base/abci/abcRenode.c | 609 | ||||
| -rw-r--r-- | src/base/abci/abcRewrite.c | 184 | ||||
| -rw-r--r-- | src/base/abci/abcSat.c | 252 | ||||
| -rw-r--r-- | src/base/abci/abcStrash.c | 287 | ||||
| -rw-r--r-- | src/base/abci/abcSweep.c | 607 | ||||
| -rw-r--r-- | src/base/abci/abcSymm.c | 221 | ||||
| -rw-r--r-- | src/base/abci/abcTiming.c | 755 | ||||
| -rw-r--r-- | src/base/abci/abcUnreach.c | 336 | ||||
| -rw-r--r-- | src/base/abci/abcVerify.c | 311 | ||||
| -rw-r--r-- | src/base/abci/abc_.c | 47 | ||||
| -rw-r--r-- | src/base/abci/module.make | 24 |
26 files changed, 13615 insertions, 0 deletions
diff --git a/src/base/abci/abc.c b/src/base/abci/abc.c new file mode 100644 index 00000000..30047d23 --- /dev/null +++ b/src/base/abci/abc.c @@ -0,0 +1,4058 @@ +/**CFile**************************************************************** + + FileName [abc.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Command file.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abc.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "mainInt.h" +#include "fraig.h" +#include "fxu.h" +#include "cut.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static int Abc_CommandPrintStats ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandPrintIo ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandPrintLatch ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandPrintFanio ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandPrintFactor ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandPrintLevel ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandPrintSupport ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandPrintSymms ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandShowBdd ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandShowCut ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandShowAig ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandCollapse ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandStrash ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandBalance ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandRenode ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandCleanup ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandSweep ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandFastExtract ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandDisjoint ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandRewrite ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandRefactor ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandLogic ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandMiter ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandFrames ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandSop ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandBdd ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandMuxes ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandSat ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandExtSeqDcs ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandOneOutput ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandOneNode ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandShortNames ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandCut ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandTest ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandFraig ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandFraigTrust ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandFraigStore ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandFraigRestore ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandFraigClean ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandFraigSweep ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandMap ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandUnmap ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandAttach ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandSuperChoice ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandFpga ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandSeq ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandRetime ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +static int Abc_CommandCec ( Abc_Frame_t * pAbc, int argc, char ** argv ); +static int Abc_CommandSec ( Abc_Frame_t * pAbc, int argc, char ** argv ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_Init( Abc_Frame_t * pAbc ) +{ + Cmd_CommandAdd( pAbc, "Printing", "print_stats", Abc_CommandPrintStats, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "print_io", Abc_CommandPrintIo, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "print_latch", Abc_CommandPrintLatch, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "print_fanio", Abc_CommandPrintFanio, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "print_factor", Abc_CommandPrintFactor, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "print_level", Abc_CommandPrintLevel, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "print_supp", Abc_CommandPrintSupport, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "print_symm", Abc_CommandPrintSymms, 0 ); + + Cmd_CommandAdd( pAbc, "Printing", "show_bdd", Abc_CommandShowBdd, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "show_cut", Abc_CommandShowCut, 0 ); + Cmd_CommandAdd( pAbc, "Printing", "show_aig", Abc_CommandShowAig, 0 ); + + Cmd_CommandAdd( pAbc, "Synthesis", "collapse", Abc_CommandCollapse, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "strash", Abc_CommandStrash, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "balance", Abc_CommandBalance, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "renode", Abc_CommandRenode, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "cleanup", Abc_CommandCleanup, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "sweep", Abc_CommandSweep, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "fx", Abc_CommandFastExtract, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "dsd", Abc_CommandDisjoint, 1 ); + + Cmd_CommandAdd( pAbc, "Synthesis", "rewrite", Abc_CommandRewrite, 1 ); + Cmd_CommandAdd( pAbc, "Synthesis", "refactor", Abc_CommandRefactor, 1 ); + + Cmd_CommandAdd( pAbc, "Various", "logic", Abc_CommandLogic, 1 ); + Cmd_CommandAdd( pAbc, "Various", "miter", Abc_CommandMiter, 1 ); + Cmd_CommandAdd( pAbc, "Various", "frames", Abc_CommandFrames, 1 ); + Cmd_CommandAdd( pAbc, "Various", "sop", Abc_CommandSop, 0 ); + Cmd_CommandAdd( pAbc, "Various", "bdd", Abc_CommandBdd, 0 ); + Cmd_CommandAdd( pAbc, "Various", "muxes", Abc_CommandMuxes, 1 ); + Cmd_CommandAdd( pAbc, "Various", "sat", Abc_CommandSat, 0 ); + Cmd_CommandAdd( pAbc, "Various", "ext_seq_dcs", Abc_CommandExtSeqDcs, 0 ); + Cmd_CommandAdd( pAbc, "Various", "one_output", Abc_CommandOneOutput, 1 ); + Cmd_CommandAdd( pAbc, "Various", "one_node", Abc_CommandOneNode, 1 ); + Cmd_CommandAdd( pAbc, "Various", "short_names", Abc_CommandShortNames, 0 ); + Cmd_CommandAdd( pAbc, "Various", "cut", Abc_CommandCut, 0 ); + Cmd_CommandAdd( pAbc, "Various", "test", Abc_CommandTest, 0 ); + + Cmd_CommandAdd( pAbc, "Fraiging", "fraig", Abc_CommandFraig, 1 ); + Cmd_CommandAdd( pAbc, "Fraiging", "fraig_trust", Abc_CommandFraigTrust, 1 ); + Cmd_CommandAdd( pAbc, "Fraiging", "fraig_store", Abc_CommandFraigStore, 0 ); + Cmd_CommandAdd( pAbc, "Fraiging", "fraig_restore", Abc_CommandFraigRestore, 1 ); + Cmd_CommandAdd( pAbc, "Fraiging", "fraig_clean", Abc_CommandFraigClean, 0 ); + Cmd_CommandAdd( pAbc, "Fraiging", "fraig_sweep", Abc_CommandFraigSweep, 1 ); + + Cmd_CommandAdd( pAbc, "SC mapping", "map", Abc_CommandMap, 1 ); + Cmd_CommandAdd( pAbc, "SC mapping", "unmap", Abc_CommandUnmap, 1 ); + Cmd_CommandAdd( pAbc, "SC mapping", "attach", Abc_CommandAttach, 1 ); + Cmd_CommandAdd( pAbc, "SC mapping", "sc", Abc_CommandSuperChoice, 1 ); + + Cmd_CommandAdd( pAbc, "FPGA mapping", "fpga", Abc_CommandFpga, 1 ); + + Cmd_CommandAdd( pAbc, "Sequential", "seq", Abc_CommandSeq, 1 ); + Cmd_CommandAdd( pAbc, "Sequential", "retime", Abc_CommandRetime, 1 ); + + Cmd_CommandAdd( pAbc, "Verification", "cec", Abc_CommandCec, 0 ); + Cmd_CommandAdd( pAbc, "Verification", "sec", Abc_CommandSec, 0 ); + +// Rwt_Man4ExploreStart(); +// Map_Var3Print(); +// Map_Var4Test(); +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_End() +{ + Abc_NtkFraigStoreClean(); +// Rwt_Man4ExplorePrint(); +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintStats( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + bool fShort; + int c; + int fFactor; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set the defaults + fShort = 1; + fFactor = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "sfh" ) ) != EOF ) + { + switch ( c ) + { + case 's': + fShort ^= 1; + break; + case 'f': + fFactor ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( Abc_FrameReadErr(pAbc), "Empty network\n" ); + return 1; + } + Abc_NtkPrintStats( pOut, pNtk, fFactor ); + return 0; + +usage: + fprintf( pErr, "usage: print_stats [-fh]\n" ); + fprintf( pErr, "\t prints the network statistics and\n" ); + fprintf( pErr, "\t-f : toggles printing the literal count in the factored forms [default = %s]\n", fFactor? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintIo( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + Abc_Obj_t * pNode; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( argc > util_optind + 1 ) + { + fprintf( pErr, "Wrong number of auguments.\n" ); + goto usage; + } + + if ( argc == util_optind + 1 ) + { + pNode = Abc_NtkFindNode( pNtk, argv[util_optind] ); + if ( pNode == NULL ) + { + fprintf( pErr, "Cannot find node \"%s\".\n", argv[util_optind] ); + return 1; + } + Abc_NodePrintFanio( pOut, pNode ); + return 0; + } + // print the nodes + Abc_NtkPrintIo( pOut, pNtk ); + return 0; + +usage: + fprintf( pErr, "usage: print_io [-h] <node>\n" ); + fprintf( pErr, "\t prints the PIs/POs or fanins/fanouts of a node\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\tnode : the node to print fanins/fanouts\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintLatch( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + // print the nodes + Abc_NtkPrintLatch( pOut, pNtk ); + return 0; + +usage: + fprintf( pErr, "usage: print_latch [-h]\n" ); + fprintf( pErr, "\t prints information about latches\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintFanio( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // print the nodes + Abc_NtkPrintFanio( pOut, pNtk ); + return 0; + +usage: + fprintf( pErr, "usage: print_fanio [-h]\n" ); + fprintf( pErr, "\t prints the statistics about fanins/fanouts of all nodes\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintFactor( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + Abc_Obj_t * pNode; + int c; + int fUseRealNames; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fUseRealNames = 1; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "nh" ) ) != EOF ) + { + switch ( c ) + { + case 'n': + fUseRealNames ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsSopLogic(pNtk) ) + { + fprintf( pErr, "Printing factored forms can be done for SOP networks.\n" ); + return 1; + } + + if ( argc > util_optind + 1 ) + { + fprintf( pErr, "Wrong number of auguments.\n" ); + goto usage; + } + + if ( argc == util_optind + 1 ) + { + pNode = Abc_NtkFindNode( pNtk, argv[util_optind] ); + if ( pNode == NULL ) + { + fprintf( pErr, "Cannot find node \"%s\".\n", argv[util_optind] ); + return 1; + } + Abc_NodePrintFactor( pOut, pNode, fUseRealNames ); + return 0; + } + // print the nodes + Abc_NtkPrintFactor( pOut, pNtk, fUseRealNames ); + return 0; + +usage: + fprintf( pErr, "usage: print_factor [-nh] <node>\n" ); + fprintf( pErr, "\t prints the factored forms of nodes\n" ); + fprintf( pErr, "\t-n : toggles real/dummy fanin names [default = %s]\n", fUseRealNames? "real": "dummy" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\tnode : (optional) one node to consider\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintLevel( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + Abc_Obj_t * pNode; + int c; + int fProfile; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fProfile = 1; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "ph" ) ) != EOF ) + { + switch ( c ) + { + case 'p': + fProfile ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !fProfile && !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "This command works only for AIGs.\n" ); + return 1; + } + + if ( argc > util_optind + 1 ) + { + fprintf( pErr, "Wrong number of auguments.\n" ); + goto usage; + } + + if ( argc == util_optind + 1 ) + { + pNode = Abc_NtkFindNode( pNtk, argv[util_optind] ); + if ( pNode == NULL ) + { + fprintf( pErr, "Cannot find node \"%s\".\n", argv[util_optind] ); + return 1; + } + Abc_NodePrintLevel( pOut, pNode ); + return 0; + } + // process all COs + Abc_NtkPrintLevel( pOut, pNtk, fProfile ); + return 0; + +usage: + fprintf( pErr, "usage: print_level [-ph] <node>\n" ); + fprintf( pErr, "\t prints information about node level and cone size\n" ); + fprintf( pErr, "\t-p : toggles printing level profile [default = %s]\n", fProfile? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\tnode : (optional) one node to consider\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintSupport( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + Vec_Ptr_t * vSuppFun; + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + extern Vec_Ptr_t * Sim_ComputeFunSupp( Abc_Ntk_t * pNtk ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsComb(pNtk) ) + { + fprintf( pErr, "This command works only for combinational networks.\n" ); + return 1; + } + + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "This command works only for AIGs.\n" ); + return 1; + } + vSuppFun = Sim_ComputeFunSupp( pNtk ); + free( vSuppFun->pArray[0] ); + Vec_PtrFree( vSuppFun ); + return 0; + +usage: + fprintf( pErr, "usage: print_supp [-h]\n" ); + fprintf( pErr, "\t prints the supports of the CO nodes\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandPrintSymms( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int fUseBdds; + int fNaive; + int fVerbose; + extern void Abc_NtkSymmetries( Abc_Ntk_t * pNtk, int fUseBdds, int fNaive, int fVerbose ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fUseBdds = 0; + fNaive = 0; + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "bnvh" ) ) != EOF ) + { + switch ( c ) + { + case 'b': + fUseBdds ^= 1; + break; + case 'n': + fNaive ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkIsComb(pNtk) ) + { + fprintf( pErr, "This command works only for combinational networks.\n" ); + return 1; + } + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "This command works only for AIGs.\n" ); + return 1; + } + Abc_NtkSymmetries( pNtk, fUseBdds, fNaive, fVerbose ); + return 0; + +usage: + fprintf( pErr, "usage: print_symm [-nbvh]\n" ); + fprintf( pErr, "\t computes symmetries of the PO functions\n" ); + fprintf( pErr, "\t-b : enable efficient BDD-based computation [default = %s].\n", fUseBdds? "yes": "no" ); + fprintf( pErr, "\t-n : enable naive BDD-based computation [default = %s].\n", fNaive? "yes": "no" ); + fprintf( pErr, "\t-v : enable verbose output [default = %s].\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandShowBdd( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + Abc_Obj_t * pNode; + int c; + extern void Abc_NodeShowBdd( Abc_Obj_t * pNode ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsBddLogic(pNtk) ) + { + fprintf( pErr, "Visualizing BDDs can only be done for logic BDD networks.\n" ); + return 1; + } + + if ( argc != util_optind + 1 ) + { + fprintf( pErr, "Wrong number of auguments.\n" ); + goto usage; + } + + pNode = Abc_NtkFindNode( pNtk, argv[util_optind] ); + if ( pNode == NULL ) + { + fprintf( pErr, "Cannot find node \"%s\".\n", argv[util_optind] ); + return 1; + } + Abc_NodeShowBdd( pNode ); + return 0; + +usage: + fprintf( pErr, "usage: show_bdd [-h] <node>\n" ); + fprintf( pErr, " visualizes the BDD of a node using DOT and GSVIEW\n" ); +#ifdef WIN32 + fprintf( pErr, " \"dot.exe\" and \"gsview32.exe\" should be set in the paths\n" ); + fprintf( pErr, " (\"gsview32.exe\" may be in \"C:\\Program Files\\Ghostgum\\gsview\\\")\n" ); +#endif + fprintf( pErr, "\tnode : the node to consider\n"); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandShowCut( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + Abc_Obj_t * pNode; + int c; + int nNodeSizeMax; + int nConeSizeMax; + extern void Abc_NodeShowCut( Abc_Obj_t * pNode, int nNodeSizeMax, int nConeSizeMax ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + nNodeSizeMax = 10; + nConeSizeMax = ABC_INFINITY; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "NCh" ) ) != EOF ) + { + switch ( c ) + { + case 'N': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-N\" should be followed by an integer.\n" ); + goto usage; + } + nNodeSizeMax = atoi(argv[util_optind]); + util_optind++; + if ( nNodeSizeMax < 0 ) + goto usage; + break; + case 'C': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-C\" should be followed by an integer.\n" ); + goto usage; + } + nConeSizeMax = atoi(argv[util_optind]); + util_optind++; + if ( nConeSizeMax < 0 ) + goto usage; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Visualizing cuts only works for AIGs.\n" ); + return 1; + } + if ( argc != util_optind + 1 ) + { + fprintf( pErr, "Wrong number of auguments.\n" ); + goto usage; + } + + pNode = Abc_NtkFindNode( pNtk, argv[util_optind] ); + if ( pNode == NULL ) + { + fprintf( pErr, "Cannot find node \"%s\".\n", argv[util_optind] ); + return 1; + } + Abc_NodeShowCut( pNode, nNodeSizeMax, nConeSizeMax ); + return 0; + +usage: + fprintf( pErr, "usage: show_cut [-N num] [-C num] [-h] <node>\n" ); + fprintf( pErr, " visualizes the cut of a node using DOT and GSVIEW\n" ); +#ifdef WIN32 + fprintf( pErr, " \"dot.exe\" and \"gsview32.exe\" should be set in the paths\n" ); + fprintf( pErr, " (\"gsview32.exe\" may be in \"C:\\Program Files\\Ghostgum\\gsview\\\")\n" ); +#endif + fprintf( pErr, "\t-N num : the max size of the cut to be computed [default = %d]\n", nNodeSizeMax ); + fprintf( pErr, "\t-C num : the max support of the containing cone [default = %d]\n", nConeSizeMax ); + fprintf( pErr, "\tnode : the node to consider\n"); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandShowAig( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + extern void Abc_NtkShowAig( Abc_Ntk_t * pNtk ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Visualizing AIG can only be done for AIGs.\n" ); + return 1; + } + Abc_NtkShowAig( pNtk ); + return 0; + +usage: + fprintf( pErr, "usage: show_aig [-h]\n" ); + fprintf( pErr, " visualizes the AIG with choices using DOT and GSVIEW\n" ); +#ifdef WIN32 + fprintf( pErr, " \"dot.exe\" and \"gsview32.exe\" should be set in the paths\n" ); + fprintf( pErr, " (\"gsview32.exe\" may be in \"C:\\Program Files\\Ghostgum\\gsview\\\")\n" ); +#endif + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandCollapse( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Can only collapse a logic network.\n" ); + return 1; + } + + // get the new network + if ( Abc_NtkIsStrash(pNtk) ) + pNtkRes = Abc_NtkCollapse( pNtk, 1 ); + else + { + pNtk = Abc_NtkStrash( pNtk, 0, 0 ); + pNtkRes = Abc_NtkCollapse( pNtk, 1 ); + Abc_NtkDelete( pNtk ); + } + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Collapsing has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: collapse [-h]\n" ); + fprintf( pErr, "\t collapses the network by constructing global BDDs\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandStrash( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + int fAllNodes; + int fCleanup; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fAllNodes = 0; + fCleanup = 1; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "ach" ) ) != EOF ) + { + switch ( c ) + { + case 'a': + fAllNodes ^= 1; + break; + case 'c': + fCleanup ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkStrash( pNtk, fAllNodes, fCleanup ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Strashing has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: strash [-ach]\n" ); + fprintf( pErr, "\t transforms combinational logic into an AIG\n" ); + fprintf( pErr, "\t-a : toggles between using all nodes and DFS nodes [default = %s]\n", fAllNodes? "all": "DFS" ); + fprintf( pErr, "\t-c : toggles cleanup to remove the dagling AIG nodes [default = %s]\n", fCleanup? "all": "DFS" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandBalance( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes, * pNtkTemp; + int c; + int fDuplicate; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fDuplicate = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "dh" ) ) != EOF ) + { + switch ( c ) + { + case 'd': + fDuplicate ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + if ( Abc_NtkIsStrash(pNtk) ) + { + pNtkRes = Abc_NtkBalance( pNtk, fDuplicate ); + } + else + { + pNtkTemp = Abc_NtkStrash( pNtk, 0, 0 ); + if ( pNtkTemp == NULL ) + { + fprintf( pErr, "Strashing before balancing has failed.\n" ); + return 1; + } + pNtkRes = Abc_NtkBalance( pNtkTemp, fDuplicate ); + Abc_NtkDelete( pNtkTemp ); + } + + // check if balancing worked + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Balancing has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: balance [-dh]\n" ); + fprintf( pErr, "\t transforms the current network into a well-balanced AIG\n" ); + fprintf( pErr, "\t-d : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandRenode( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int nThresh, nFaninMax, c; + int fCnf; + int fMulti; + int fSimple; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + nThresh = 1; + nFaninMax = 20; + fCnf = 0; + fMulti = 0; + fSimple = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "TFmcsh" ) ) != EOF ) + { + switch ( c ) + { + case 'T': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-T\" should be followed by an integer.\n" ); + goto usage; + } + nThresh = atoi(argv[util_optind]); + util_optind++; + if ( nThresh < 0 ) + goto usage; + break; + case 'F': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-F\" should be followed by an integer.\n" ); + goto usage; + } + nFaninMax = atoi(argv[util_optind]); + util_optind++; + if ( nFaninMax < 0 ) + goto usage; + break; + case 'c': + fCnf ^= 1; + break; + case 'm': + fMulti ^= 1; + break; + case 's': + fSimple ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Cannot renode a network that is not an AIG.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkRenode( pNtk, nThresh, nFaninMax, fCnf, fMulti, fSimple ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Renoding has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: renode [-T num] [-F num] [-cmsh]\n" ); + fprintf( pErr, "\t transforms an AIG into a logic network by creating larger nodes\n" ); + fprintf( pErr, "\t-F num : the maximum fanin size after renoding [default = %d]\n", nFaninMax ); + fprintf( pErr, "\t-T num : the threshold for AIG node duplication [default = %d]\n", nThresh ); + fprintf( pErr, "\t (an AIG node is the root of a new node after renoding\n" ); + fprintf( pErr, "\t if doing so prevents duplication of more than %d AIG nodes,\n", nThresh ); + fprintf( pErr, "\t that is, if [(numFanouts(Node)-1) * size(MFFC(Node))] > %d)\n", nThresh ); + fprintf( pErr, "\t-m : creates multi-input AND graph [default = %s]\n", fMulti? "yes": "no" ); + fprintf( pErr, "\t-s : creates a simple AIG (no renoding) [default = %s]\n", fSimple? "yes": "no" ); + fprintf( pErr, "\t-c : performs renoding to derive the CNF [default = %s]\n", fCnf? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandCleanup( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Cleanup cannot be performed on the AIG.\n" ); + return 1; + } + // modify the current network + Abc_NtkCleanup( pNtk, 0 ); + return 0; + +usage: + fprintf( pErr, "usage: cleanup [-h]\n" ); + fprintf( pErr, "\t removes dangling nodes\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandSweep( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkIsSopLogic(pNtk) && !Abc_NtkIsBddLogic(pNtk) ) + { + fprintf( pErr, "Sweep cannot be performed on an AIG or a mapped network (unmap it first).\n" ); + return 1; + } + // modify the current network + Abc_NtkSweep( pNtk, 0 ); + return 0; + +usage: + fprintf( pErr, "usage: sweep [-h]\n" ); + fprintf( pErr, "\t removes dangling nodes; propagates constant, buffers, inverters\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFastExtract( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + Abc_Ntk_t * pNtk; + FILE * pOut, * pErr; + Fxu_Data_t * p = NULL; + int c; + extern bool Abc_NtkFastExtract( Abc_Ntk_t * pNtk, Fxu_Data_t * p ); + extern void Abc_NtkFxuFreeInfo( Fxu_Data_t * p ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // allocate the structure + p = ALLOC( Fxu_Data_t, 1 ); + memset( p, 0, sizeof(Fxu_Data_t) ); + // set the defaults + p->nPairsMax = 30000; + p->nNodesExt = 10000; + p->fOnlyS = 0; + p->fOnlyD = 0; + p->fUse0 = 0; + p->fUseCompl = 1; + p->fVerbose = 0; + util_getopt_reset(); + while ( (c = util_getopt(argc, argv, "LNsdzcvh")) != EOF ) + { + switch (c) + { + case 'L': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-L\" should be followed by an integer.\n" ); + goto usage; + } + p->nPairsMax = atoi(argv[util_optind]); + util_optind++; + if ( p->nPairsMax < 0 ) + goto usage; + break; + case 'N': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-N\" should be followed by an integer.\n" ); + goto usage; + } + p->nNodesExt = atoi(argv[util_optind]); + util_optind++; + if ( p->nNodesExt < 0 ) + goto usage; + break; + case 's': + p->fOnlyS ^= 1; + break; + case 'd': + p->fOnlyD ^= 1; + break; + case 'z': + p->fUse0 ^= 1; + break; + case 'c': + p->fUseCompl ^= 1; + break; + case 'v': + p->fVerbose ^= 1; + break; + case 'h': + goto usage; + break; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + Abc_NtkFxuFreeInfo( p ); + return 1; + } + + if ( Abc_NtkNodeNum(pNtk) == 0 ) + { + fprintf( pErr, "The network does not have internal nodes.\n" ); + Abc_NtkFxuFreeInfo( p ); + return 1; + } + + if ( !Abc_NtkIsLogic(pNtk) ) + { + fprintf( pErr, "Fast extract can only be applied to a logic network.\n" ); + Abc_NtkFxuFreeInfo( p ); + return 1; + } + + + // the nodes to be merged are linked into the special linked list + Abc_NtkFastExtract( pNtk, p ); + Abc_NtkFxuFreeInfo( p ); + return 0; + +usage: + fprintf( pErr, "usage: fx [-N num] [-L num] [-sdzcvh]\n"); + fprintf( pErr, "\t performs unate fast extract on the current network\n"); + fprintf( pErr, "\t-N num : the maximum number of divisors to extract [default = %d]\n", p->nNodesExt ); + fprintf( pErr, "\t-L num : the maximum number of cube pairs to consider [default = %d]\n", p->nPairsMax ); + fprintf( pErr, "\t-s : use only single-cube divisors [default = %s]\n", p->fOnlyS? "yes": "no" ); + fprintf( pErr, "\t-d : use only double-cube divisors [default = %s]\n", p->fOnlyD? "yes": "no" ); + fprintf( pErr, "\t-z : use zero-weight divisors [default = %s]\n", p->fUse0? "yes": "no" ); + fprintf( pErr, "\t-c : use complement in the binary case [default = %s]\n", p->fUseCompl? "yes": "no" ); + fprintf( pErr, "\t-v : print verbose information [default = %s]\n", p->fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + Abc_NtkFxuFreeInfo( p ); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandDisjoint( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes, * pNtkNew; + int fGlobal, fRecursive, fVerbose, fPrint, fShort, c; + + extern Abc_Ntk_t * Abc_NtkDsdGlobal( Abc_Ntk_t * pNtk, bool fVerbose, bool fPrint, bool fShort ); + extern int Abc_NtkDsdLocal( Abc_Ntk_t * pNtk, bool fVerbose, bool fRecursive ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fGlobal = 1; + fRecursive = 0; + fVerbose = 0; + fPrint = 0; + fShort = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "grvpsh" ) ) != EOF ) + { + switch ( c ) + { + case 'g': + fGlobal ^= 1; + break; + case 'r': + fRecursive ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'p': + fPrint ^= 1; + break; + case 's': + fShort ^= 1; + break; + case 'h': + goto usage; + break; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( fGlobal ) + { +// fprintf( stdout, "Performing DSD of global functions of the network.\n" ); + // get the new network + if ( !Abc_NtkIsStrash(pNtk) ) + { + pNtkNew = Abc_NtkStrash( pNtk, 0, 0 ); + pNtkRes = Abc_NtkDsdGlobal( pNtkNew, fVerbose, fPrint, fShort ); + Abc_NtkDelete( pNtkNew ); + } + else + { + pNtkRes = Abc_NtkDsdGlobal( pNtk, fVerbose, fPrint, fShort ); + } + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Global DSD has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + } + else if ( fRecursive ) + { + if ( !Abc_NtkIsBddLogic( pNtk ) ) + { + fprintf( pErr, "This command is only applicable to logic BDD networks.\n" ); + return 1; + } + fprintf( stdout, "Performing recursive DSD and MUX decomposition of local functions.\n" ); + if ( !Abc_NtkDsdLocal( pNtk, fVerbose, fRecursive ) ) + fprintf( pErr, "Recursive DSD has failed.\n" ); + } + else + { + if ( !Abc_NtkIsBddLogic( pNtk ) ) + { + fprintf( pErr, "This command is only applicable to logic BDD networks.\n" ); + return 1; + } + fprintf( stdout, "Performing simple non-recursive DSD of local functions.\n" ); + if ( !Abc_NtkDsdLocal( pNtk, fVerbose, fRecursive ) ) + fprintf( pErr, "Simple DSD of local functions has failed.\n" ); + } + return 0; + +usage: + fprintf( pErr, "usage: dsd [-grvpsh]\n" ); + fprintf( pErr, "\t decomposes the network using disjoint-support decomposition\n" ); + fprintf( pErr, "\t-g : toggle DSD of global and local functions [default = %s]\n", fGlobal? "global": "local" ); + fprintf( pErr, "\t-r : toggle recursive DSD/MUX and simple DSD [default = %s]\n", fRecursive? "recursive DSD/MUX": "simple DSD" ); + fprintf( pErr, "\t-v : prints DSD statistics and runtime [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-p : prints DSD structure to the standard output [default = %s]\n", fPrint? "yes": "no" ); + fprintf( pErr, "\t-s : use short PI names when printing DSD structure [default = %s]\n", fShort? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandRewrite( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + bool fPrecompute; + bool fUseZeros; + bool fVerbose; + // external functions + extern void Rwr_Precompute(); + extern int Abc_NtkRewrite( Abc_Ntk_t * pNtk, int fUseZeros, int fVerbose ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fPrecompute = 0; + fUseZeros = 0; + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "xzvh" ) ) != EOF ) + { + switch ( c ) + { + case 'x': + fPrecompute ^= 1; + break; + case 'z': + fUseZeros ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( fPrecompute ) + { + Rwr_Precompute(); + return 0; + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "This command can only be applied to an AIG.\n" ); + return 1; + } + if ( Abc_NtkGetChoiceNum(pNtk) ) + { + fprintf( pErr, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" ); + return 1; + } + + // modify the current network + if ( !Abc_NtkRewrite( pNtk, fUseZeros, fVerbose ) ) + { + fprintf( pErr, "Rewriting has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: rewrite [-zvh]\n" ); + fprintf( pErr, "\t performs technology-independent rewriting of the AIG\n" ); + fprintf( pErr, "\t-z : toggle using zero-cost replacements [default = %s]\n", fUseZeros? "yes": "no" ); + fprintf( pErr, "\t-v : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandRefactor( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int nNodeSizeMax; + int nConeSizeMax; + bool fUseZeros; + bool fUseDcs; + bool fVerbose; + extern int Abc_NtkRefactor( Abc_Ntk_t * pNtk, int nNodeSizeMax, int nConeSizeMax, bool fUseZeros, bool fUseDcs, bool fVerbose ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + nNodeSizeMax = 10; + nConeSizeMax = 16; + fUseZeros = 0; + fUseDcs = 0; + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "NCzdvh" ) ) != EOF ) + { + switch ( c ) + { + case 'N': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-N\" should be followed by an integer.\n" ); + goto usage; + } + nNodeSizeMax = atoi(argv[util_optind]); + util_optind++; + if ( nNodeSizeMax < 0 ) + goto usage; + break; + case 'C': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-C\" should be followed by an integer.\n" ); + goto usage; + } + nConeSizeMax = atoi(argv[util_optind]); + util_optind++; + if ( nConeSizeMax < 0 ) + goto usage; + break; + case 'z': + fUseZeros ^= 1; + break; + case 'd': + fUseDcs ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "This command can only be applied to an AIG.\n" ); + return 1; + } + if ( Abc_NtkGetChoiceNum(pNtk) ) + { + fprintf( pErr, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" ); + return 1; + } + + if ( fUseDcs && nNodeSizeMax >= nConeSizeMax ) + { + fprintf( pErr, "For don't-care to work, containing cone should be larger than collapsed node.\n" ); + return 1; + } + + // modify the current network + if ( !Abc_NtkRefactor( pNtk, nNodeSizeMax, nConeSizeMax, fUseZeros, fUseDcs, fVerbose ) ) + { + fprintf( pErr, "Refactoring has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: refactor [-N num] [-C num] [-zdvh]\n" ); + fprintf( pErr, "\t performs technology-independent refactoring of the AIG\n" ); + fprintf( pErr, "\t-N num : the max support of the collapsed node [default = %d]\n", nNodeSizeMax ); + fprintf( pErr, "\t-C num : the max support of the containing cone [default = %d]\n", nConeSizeMax ); + fprintf( pErr, "\t-z : toggle using zero-cost replacements [default = %s]\n", fUseZeros? "yes": "no" ); + fprintf( pErr, "\t-d : toggle using don't-cares [default = %s]\n", fUseDcs? "yes": "no" ); + fprintf( pErr, "\t-v : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandLogic( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsNetlist( pNtk ) ) + { + fprintf( pErr, "This command is only applicable to netlists.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkNetlistToLogic( pNtk ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Converting to a logic network has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: logic [-h]\n" ); + fprintf( pErr, "\t transforms a netlist into a logic network\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandMiter( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtk1, * pNtk2, * pNtkRes; + int fDelete1, fDelete2; + char ** pArgvNew; + int nArgcNew; + int c; + int fCheck; + int fComb; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fComb = 1; + fCheck = 1; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "ch" ) ) != EOF ) + { + switch ( c ) + { + case 'c': + fComb ^= 1; + break; + default: + goto usage; + } + } + + pArgvNew = argv + util_optind; + nArgcNew = argc - util_optind; + if ( !Abc_NtkPrepareTwoNtks( pErr, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2 ) ) + return 1; + + // compute the miter + pNtkRes = Abc_NtkMiter( pNtk1, pNtk2, fComb ); + if ( fDelete1 ) Abc_NtkDelete( pNtk1 ); + if ( fDelete2 ) Abc_NtkDelete( pNtk2 ); + + // get the new network + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Miter computation has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: miter [-ch] <file1> <file2>\n" ); + fprintf( pErr, "\t computes the miter of the two circuits\n" ); + fprintf( pErr, "\t-c : computes combinational miter (latches as POs) [default = %s]\n", fComb? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\tfile1 : (optional) the file with the first network\n"); + fprintf( pErr, "\tfile2 : (optional) the file with the second network\n"); + fprintf( pErr, "\t if no files are given, uses the current network and its spec\n"); + fprintf( pErr, "\t if one file is given, uses the current network and the file\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFrames( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkTemp, * pNtkRes; + int fInitial; + int nFrames; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fInitial = 0; + nFrames = 5; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "Fih" ) ) != EOF ) + { + switch ( c ) + { + case 'F': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-F\" should be followed by an integer.\n" ); + goto usage; + } + nFrames = atoi(argv[util_optind]); + util_optind++; + if ( nFrames < 0 ) + goto usage; + break; + case 'i': + fInitial ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + if ( !Abc_NtkIsStrash(pNtk) ) + { + pNtkTemp = Abc_NtkStrash( pNtk, 0, 0 ); + pNtkRes = Abc_NtkFrames( pNtkTemp, nFrames, fInitial ); + Abc_NtkDelete( pNtkTemp ); + } + else + pNtkRes = Abc_NtkFrames( pNtk, nFrames, fInitial ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Unrolling the network has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: frames [-F num] [-ih]\n" ); + fprintf( pErr, "\t unrolls the network for a number of time frames\n" ); + fprintf( pErr, "\t-F num : the number of frames to unroll [default = %d]\n", nFrames ); + fprintf( pErr, "\t-i : toggles initializing the first frame [default = %s]\n", fInitial? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandSop( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + if ( !Abc_NtkIsBddLogic(pNtk) ) + { + fprintf( pErr, "Converting to SOP is possible when node functions are BDDs.\n" ); + return 1; + } + if ( !Abc_NtkBddToSop( pNtk ) ) + { + fprintf( pErr, "Converting to SOP has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: sop [-h]\n" ); + fprintf( pErr, "\t converts node functions from BDD to SOP\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandBdd( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + if ( !Abc_NtkIsSopLogic(pNtk) ) + { + fprintf( pErr, "Converting to BDD is possible when node functions are SOPs.\n" ); + return 1; + } + if ( !Abc_NtkSopToBdd( pNtk ) ) + { + fprintf( pErr, "Converting to BDD has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: bdd [-h]\n" ); + fprintf( pErr, "\t converts node functions from SOP to BDD\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandMuxes( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsBddLogic(pNtk) ) + { + fprintf( pErr, "Only a BDD logic network can be converted to MUXes.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkBddToMuxes( pNtk ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Converting to MUXes has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: muxes [-h]\n" ); + fprintf( pErr, "\t converts the current network by a network derived by\n" ); + fprintf( pErr, "\t replacing all nodes by DAGs isomorphic to the local BDDs\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandSat( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int fVerbose; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "vh" ) ) != EOF ) + { + switch ( c ) + { + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( Abc_NtkLatchNum(pNtk) > 0 ) + { + fprintf( stdout, "Currently can only solve the miter for combinational circuits.\n" ); + return 0; + } + if ( !Abc_NtkIsLogic(pNtk) ) + { + fprintf( stdout, "This command can only be applied to logic network.\n" ); + return 0; + } + if ( Abc_NtkIsMappedLogic(pNtk) ) + Abc_NtkUnmap(pNtk); + if ( Abc_NtkIsSopLogic(pNtk) ) + Abc_NtkSopToBdd(pNtk); + + if ( Abc_NtkMiterSat( pNtk, fVerbose ) ) + printf( "The miter is satisfiable.\n" ); + else + printf( "The miter is unsatisfiable.\n" ); + return 0; + +usage: + fprintf( pErr, "usage: sat [-vh]\n" ); + fprintf( pErr, "\t solves the miter\n" ); + fprintf( pErr, "\t-v : prints verbose information [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandExtSeqDcs( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int fVerbose; + extern int Abc_NtkExtractSequentialDcs( Abc_Ntk_t * pNet, bool fVerbose ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "vh" ) ) != EOF ) + { + switch ( c ) + { + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( Abc_NtkLatchNum(pNtk) == 0 ) + { + fprintf( stdout, "The current network has no latches.\n" ); + return 0; + } + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( stdout, "This command works only for AIGs.\n" ); + return 0; + } + if ( !Abc_NtkExtractSequentialDcs( pNtk, fVerbose ) ) + { + fprintf( stdout, "Extracting sequential don't-cares has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: ext_seq_dcs [-vh]\n" ); + fprintf( pErr, "\t create EXDC network using unreachable states\n" ); + fprintf( pErr, "\t-v : prints verbose information [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandOneOutput( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + Abc_Obj_t * pNode; + int c; + int fUseAllCis; + int Output; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fUseAllCis = 0; + Output = -1; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "Oah" ) ) != EOF ) + { + switch ( c ) + { + case 'O': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-O\" should be followed by an integer.\n" ); + goto usage; + } + Output = atoi(argv[util_optind]); + util_optind++; + if ( Output < 0 ) + goto usage; + break; + case 'a': + fUseAllCis ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Currently can only be applied to the logic network or an AIG.\n" ); + return 1; + } + + if ( argc > util_optind + 1 ) + { + fprintf( pErr, "Wrong number of auguments.\n" ); + goto usage; + } + + if ( argc == util_optind + 1 ) + { + pNode = Abc_NtkFindCo( pNtk, argv[util_optind] ); + if ( pNode == NULL ) + { + fprintf( pErr, "Cannot find CO node \"%s\".\n", argv[util_optind] ); + return 1; + } + pNtkRes = Abc_NtkSplitOutput( pNtk, pNode, fUseAllCis ); + } + else + { + if ( Output == -1 ) + { + fprintf( pErr, "The output is not specified.\n" ); + return 1; + } + if ( Output >= Abc_NtkCoNum(pNtk) ) + { + fprintf( pErr, "The 0-based output number (%d) is larger than the number of outputs (%d).\n", Output, Abc_NtkCoNum(pNtk) ); + return 1; + } + pNtkRes = Abc_NtkSplitOutput( pNtk, Abc_NtkCo(pNtk,Output), fUseAllCis ); + } + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Splitting one output has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: one_output [-O num] [-ah] <name>\n" ); + fprintf( pErr, "\t replaces the current network by the logic cone of one output\n" ); + fprintf( pErr, "\t-a : toggle writing all CIs or structral support only [default = %s]\n", fUseAllCis? "all": "structural" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\t-O num : (optional) the 0-based number of the output\n"); + fprintf( pErr, "\tname : (optional) the name of the output\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandOneNode( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + Abc_Obj_t * pNode; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsLogic(pNtk) ) + { + fprintf( pErr, "Currently can only be applied to a logic network.\n" ); + return 1; + } + + if ( argc != util_optind + 1 ) + { + fprintf( pErr, "Wrong number of auguments.\n" ); + goto usage; + } + + pNode = Abc_NtkFindNode( pNtk, argv[util_optind] ); + if ( pNode == NULL ) + { + fprintf( pErr, "Cannot find node \"%s\".\n", argv[util_optind] ); + return 1; + } + + pNtkRes = Abc_NtkSplitNode( pNtk, pNode ); +// pNtkRes = Abc_NtkDeriveFromBdd( pNtk->pManFunc, pNode->pData, NULL, NULL ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Splitting one node has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: one_node [-h] <name>\n" ); + fprintf( pErr, "\t replaces the current network by the network composed of one node\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\tname : the node name\n"); + return 1; +} + + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandShortNames( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + Abc_NtkShortNames( pNtk ); + return 0; + +usage: + fprintf( pErr, "usage: short_names [-h]\n" ); + fprintf( pErr, "\t replaces PI/PO/latch names by short char strings\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandCut( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + Cut_Params_t Params, * pParams = &Params; + Cut_Man_t * pCutMan; + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + extern Cut_Man_t * Abc_NtkCuts( Abc_Ntk_t * pNtk, Cut_Params_t * pParams ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + pParams->nVarsMax = 5; // the max cut size ("k" of the k-feasible cuts) + pParams->nKeepMax = 250; // the max number of cuts kept at a node + pParams->fTruth = 1; // compute truth tables + pParams->fHash = 0; // hash cuts to detect unique + pParams->fFilter = 0; // filter dominated cuts + pParams->fSeq = 0; // compute sequential cuts + pParams->fDrop = 0; // drop cuts on the fly + pParams->fVerbose = 0; // the verbosiness flag + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "KMtrfsdvh" ) ) != EOF ) + { + switch ( c ) + { + case 'K': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-K\" should be followed by an integer.\n" ); + goto usage; + } + pParams->nVarsMax = atoi(argv[util_optind]); + util_optind++; + if ( pParams->nVarsMax < 0 ) + goto usage; + break; + case 'M': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-M\" should be followed by an integer.\n" ); + goto usage; + } + pParams->nKeepMax = atoi(argv[util_optind]); + util_optind++; + if ( pParams->nKeepMax < 0 ) + goto usage; + break; + case 't': + pParams->fTruth ^= 1; + break; + case 'r': + pParams->fHash ^= 1; + break; + case 'f': + pParams->fFilter ^= 1; + break; + case 's': + pParams->fSeq ^= 1; + break; + case 'd': + pParams->fDrop ^= 1; + break; + case 'v': + pParams->fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Cut computation is available only for AIGs.\n" ); + return 1; + } + pCutMan = Abc_NtkCuts( pNtk, pParams ); + Cut_ManPrintStats( pCutMan ); + Cut_ManStop( pCutMan ); + return 0; + +usage: + fprintf( pErr, "usage: cut [-K num] [-M num] [-trfsdvh]\n" ); + fprintf( pErr, "\t computes k-feasible cuts for the AIG\n" ); + fprintf( pErr, "\t-K num : max number of leaves (4 <= num <= 6) [default = %d]\n", pParams->nVarsMax ); + fprintf( pErr, "\t-M num : max number of cuts stored at a node [default = %d]\n", pParams->nKeepMax ); + fprintf( pErr, "\t-t : toggle truth table computation [default = %s]\n", pParams->fTruth? "yes": "no" ); + fprintf( pErr, "\t-r : toggle reduction by hashing [default = %s]\n", pParams->fHash? "yes": "no" ); + fprintf( pErr, "\t-f : toggle filtering by dominance [default = %s]\n", pParams->fFilter? "yes": "no" ); + fprintf( pErr, "\t-s : toggle sequential cut computation [default = %s]\n", pParams->fSeq? "yes": "no" ); + fprintf( pErr, "\t-d : toggle dropping when fanouts are done [default = %s]\n", pParams->fDrop? "yes": "no" ); + fprintf( pErr, "\t-v : toggle printing verbose information [default = %s]\n", pParams->fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandTest( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + // run the command + pNtkRes = Abc_NtkMiterForCofactors( pNtk, 0, 0, -1 ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Command has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: test [-h]\n" ); + fprintf( pErr, "\t testbench for new procedures\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFraig( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + char Buffer[100]; + Fraig_Params_t Params, * pParams = &Params; + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int fAllNodes; + int c; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fAllNodes = 0; + pParams->nPatsRand = 2048; // the number of words of random simulation info + pParams->nPatsDyna = 2048; // the number of words of dynamic simulation info + pParams->nBTLimit = 99; // the max number of backtracks to perform + pParams->fFuncRed = 1; // performs only one level hashing + pParams->fFeedBack = 1; // enables solver feedback + pParams->fDist1Pats = 1; // enables distance-1 patterns + pParams->fDoSparse = 0; // performs equiv tests for sparse functions + pParams->fChoicing = 0; // enables recording structural choices + pParams->fTryProve = 0; // tries to solve the final miter + pParams->fVerbose = 0; // the verbosiness flag + pParams->fVerboseP = 0; // the verbosiness flag + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "RDBrscpvah" ) ) != EOF ) + { + switch ( c ) + { + + case 'R': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-R\" should be followed by an integer.\n" ); + goto usage; + } + pParams->nPatsRand = atoi(argv[util_optind]); + util_optind++; + if ( pParams->nPatsRand < 0 ) + goto usage; + break; + case 'D': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-D\" should be followed by an integer.\n" ); + goto usage; + } + pParams->nPatsDyna = atoi(argv[util_optind]); + util_optind++; + if ( pParams->nPatsDyna < 0 ) + goto usage; + break; + case 'B': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-B\" should be followed by an integer.\n" ); + goto usage; + } + pParams->nBTLimit = atoi(argv[util_optind]); + util_optind++; + if ( pParams->nBTLimit < 0 ) + goto usage; + break; + + case 'r': + pParams->fFuncRed ^= 1; + break; + case 's': + pParams->fDoSparse ^= 1; + break; + case 'c': + pParams->fChoicing ^= 1; + break; + case 'p': + pParams->fTryProve ^= 1; + break; + case 'v': + pParams->fVerbose ^= 1; + break; + case 'a': + fAllNodes ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Can only fraig a logic network or an AIG.\n" ); + return 1; + } + + // report the proof + pParams->fVerboseP = pParams->fTryProve; + + // get the new network + if ( Abc_NtkIsStrash(pNtk) ) + pNtkRes = Abc_NtkFraig( pNtk, &Params, fAllNodes ); + else + { + pNtk = Abc_NtkStrash( pNtk, fAllNodes, !fAllNodes ); + pNtkRes = Abc_NtkFraig( pNtk, &Params, fAllNodes ); + Abc_NtkDelete( pNtk ); + } + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Fraiging has failed.\n" ); + return 1; + } + + if ( pParams->fTryProve ) // report the result + Abc_NtkMiterReport( pNtkRes ); + + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + sprintf( Buffer, "%d", pParams->nBTLimit ); + fprintf( pErr, "usage: fraig [-R num] [-D num] [-B num] [-rscpvah]\n" ); + fprintf( pErr, "\t transforms a logic network into a functionally reduced AIG\n" ); + fprintf( pErr, "\t-R num : number of random patterns (127 < num < 32769) [default = %d]\n", pParams->nPatsRand ); + fprintf( pErr, "\t-D num : number of systematic patterns (127 < num < 32769) [default = %d]\n", pParams->nPatsDyna ); + fprintf( pErr, "\t-B num : number of backtracks for one SAT problem [default = %s]\n", pParams->nBTLimit==-1? "infinity" : Buffer ); + fprintf( pErr, "\t-r : toggle functional reduction [default = %s]\n", pParams->fFuncRed? "yes": "no" ); + fprintf( pErr, "\t-s : toggle considering sparse functions [default = %s]\n", pParams->fDoSparse? "yes": "no" ); + fprintf( pErr, "\t-c : toggle accumulation of choices [default = %s]\n", pParams->fChoicing? "yes": "no" ); + fprintf( pErr, "\t-p : toggle proving the final miter [default = %s]\n", pParams->fTryProve? "yes": "no" ); + fprintf( pErr, "\t-v : toggle verbose output [default = %s]\n", pParams->fVerbose? "yes": "no" ); + fprintf( pErr, "\t-a : toggle between all nodes and DFS nodes [default = %s]\n", fAllNodes? "all": "dfs" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFraigTrust( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + int fDuplicate; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fDuplicate = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "dh" ) ) != EOF ) + { + switch ( c ) + { + case 'd': + fDuplicate ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkFraigTrust( pNtk ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Fraiging in the trust mode has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: fraig_trust [-h]\n" ); + fprintf( pErr, "\t transforms the current network into an AIG assuming it is FRAIG with choices\n" ); +// fprintf( pErr, "\t-d : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFraigStore( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int fDuplicate; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fDuplicate = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "dh" ) ) != EOF ) + { + switch ( c ) + { + case 'd': + fDuplicate ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + if ( !Abc_NtkFraigStore( pNtk ) ) + { + fprintf( pErr, "Fraig storing has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: fraig_store [-h]\n" ); + fprintf( pErr, "\t saves the current network in the AIG database\n" ); +// fprintf( pErr, "\t-d : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFraigRestore( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + int fDuplicate; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fDuplicate = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "dh" ) ) != EOF ) + { + switch ( c ) + { + case 'd': + fDuplicate ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkFraigRestore(); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Fraig restoring has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: fraig_restore [-h]\n" ); + fprintf( pErr, "\t makes the current network by fraiging the AIG database\n" ); +// fprintf( pErr, "\t-d : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFraigClean( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int fDuplicate; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fDuplicate = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "dh" ) ) != EOF ) + { + switch ( c ) + { + case 'd': + fDuplicate ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + Abc_NtkFraigStoreClean(); + return 0; + +usage: + fprintf( pErr, "usage: fraig_clean [-h]\n" ); + fprintf( pErr, "\t cleans the internal FRAIG storage\n" ); +// fprintf( pErr, "\t-d : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFraigSweep( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int fUseInv; + int fVerbose; + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fUseInv = 1; + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "ivh" ) ) != EOF ) + { + switch ( c ) + { + case 'i': + fUseInv ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Cannot sweep AIGs (use \"fraig\").\n" ); + return 1; + } + if ( !Abc_NtkIsLogic(pNtk) ) + { + fprintf( pErr, "Transform the current network into a logic network.\n" ); + return 1; + } + // modify the current network + if ( !Abc_NtkFraigSweep( pNtk, fUseInv, fVerbose ) ) + { + fprintf( pErr, "Sweeping has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: fraig_sweep [-vh]\n" ); + fprintf( pErr, "\t performs technology-dependent sweep\n" ); +// fprintf( pErr, "\t-i : toggle using inverter for complemented nodes [default = %s]\n", fUseInv? "yes": "no" ); + fprintf( pErr, "\t-v : prints verbose information [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + char Buffer[100]; + double DelayTarget; + int fRecovery; + int fSweep; + int fSwitching; + int fVerbose; + int c; + extern Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, int fRecovery, int fSwitching, int fVerbose ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + DelayTarget =-1; + fRecovery = 1; + fSweep = 1; + fSwitching = 0; + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "Daspvh" ) ) != EOF ) + { + switch ( c ) + { + case 'D': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-D\" should be followed by a floating point number.\n" ); + goto usage; + } + DelayTarget = (float)atof(argv[util_optind]); + util_optind++; + if ( DelayTarget <= 0.0 ) + goto usage; + break; + case 'a': + fRecovery ^= 1; + break; + case 's': + fSweep ^= 1; + break; + case 'p': + fSwitching ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsStrash(pNtk) ) + { + pNtk = Abc_NtkStrash( pNtk, 0, 0 ); + if ( pNtk == NULL ) + { + fprintf( pErr, "Strashing before mapping has failed.\n" ); + return 1; + } + pNtk = Abc_NtkBalance( pNtkRes = pNtk, 0 ); + Abc_NtkDelete( pNtkRes ); + if ( pNtk == NULL ) + { + fprintf( pErr, "Balancing before mapping has failed.\n" ); + return 1; + } + fprintf( pOut, "The network was strashed and balanced before mapping.\n" ); + // get the new network + pNtkRes = Abc_NtkMap( pNtk, DelayTarget, fRecovery, fSwitching, fVerbose ); + if ( pNtkRes == NULL ) + { + Abc_NtkDelete( pNtk ); + fprintf( pErr, "Mapping has failed.\n" ); + return 1; + } + Abc_NtkDelete( pNtk ); + } + else + { + // get the new network + pNtkRes = Abc_NtkMap( pNtk, DelayTarget, fRecovery, fSwitching, fVerbose ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Mapping has failed.\n" ); + return 1; + } + } + + if ( fSweep ) + Abc_NtkFraigSweep( pNtkRes, 0, 0 ); + + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + if ( DelayTarget == -1 ) + sprintf( Buffer, "not used" ); + else + sprintf( Buffer, "%.3f", DelayTarget ); + fprintf( pErr, "usage: map [-D num] [-aspvh]\n" ); + fprintf( pErr, "\t performs standard cell mapping of the current network\n" ); + fprintf( pErr, "\t-D num : sets the global required times [default = %s]\n", Buffer ); + fprintf( pErr, "\t-a : toggles area recovery [default = %s]\n", fRecovery? "yes": "no" ); + fprintf( pErr, "\t-s : toggles sweep after mapping [default = %s]\n", fSweep? "yes": "no" ); + fprintf( pErr, "\t-p : optimizes power by minimizing switching activity [default = %s]\n", fSwitching? "yes": "no" ); + fprintf( pErr, "\t-v : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandUnmap( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + extern int Abc_NtkUnmap( Abc_Ntk_t * pNtk ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + if ( !Abc_NtkHasMapping(pNtk) ) + { + fprintf( pErr, "Cannot unmap the network that is not mapped.\n" ); + return 1; + } + + // get the new network + if ( !Abc_NtkUnmap( pNtk ) ) + { + fprintf( pErr, "Unmapping has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: unmap [-h]\n" ); + fprintf( pErr, "\t replaces the library gates by the logic nodes represented using SOPs\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandAttach( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + extern int Abc_NtkUnmap( Abc_Ntk_t * pNtk ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsSopLogic(pNtk) ) + { + fprintf( pErr, "Can only attach gates if the nodes have SOP representations.\n" ); + return 1; + } + + // get the new network + if ( !Abc_NtkAttach( pNtk ) ) + { + fprintf( pErr, "Attaching gates has failed.\n" ); + return 1; + } + return 0; + +usage: + fprintf( pErr, "usage: attach [-h]\n" ); + fprintf( pErr, "\t replaces the SOP functions by the gates from the library\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandSuperChoice( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + extern Abc_Ntk_t * Abc_NtkSuperChoice( Abc_Ntk_t * pNtk ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Works only for the AIG representation.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkSuperChoice( pNtk ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Superchoicing has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: sc [-h]\n" ); + fprintf( pErr, "\t performs superchoicing\n" ); + fprintf( pErr, "\t (accumulate: \"r file.blif; rsup; b; sc; f -ac; wb file_sc.blif\")\n" ); + fprintf( pErr, "\t (map without supergate library: \"r file_sc.blif; ft; map\")\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandFpga( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + int fRecovery; + int fSwitching; + int fVerbose; + extern Abc_Ntk_t * Abc_NtkFpga( Abc_Ntk_t * pNtk, int fRecovery, int fSwitching, int fVerbose ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fRecovery = 1; + fSwitching = 0; + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "apvh" ) ) != EOF ) + { + switch ( c ) + { + case 'a': + fRecovery ^= 1; + break; + case 'p': + fSwitching ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + if ( !Abc_NtkIsStrash(pNtk) ) + { + // strash and balance the network + pNtk = Abc_NtkStrash( pNtk, 0, 0 ); + if ( pNtk == NULL ) + { + fprintf( pErr, "Strashing before FPGA mapping has failed.\n" ); + return 1; + } + pNtk = Abc_NtkBalance( pNtkRes = pNtk, 0 ); + Abc_NtkDelete( pNtkRes ); + if ( pNtk == NULL ) + { + fprintf( pErr, "Balancing before FPGA mapping has failed.\n" ); + return 1; + } + fprintf( pOut, "The network was strashed and balanced before FPGA mapping.\n" ); + // get the new network + pNtkRes = Abc_NtkFpga( pNtk, fRecovery, fSwitching, fVerbose ); + if ( pNtkRes == NULL ) + { + Abc_NtkDelete( pNtk ); + fprintf( pErr, "FPGA mapping has failed.\n" ); + return 1; + } + Abc_NtkDelete( pNtk ); + } + else + { + // get the new network + pNtkRes = Abc_NtkFpga( pNtk, fRecovery, fSwitching, fVerbose ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "FPGA mapping has failed.\n" ); + return 1; + } + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: fpga [-apvh]\n" ); + fprintf( pErr, "\t performs FPGA mapping of the current network\n" ); + fprintf( pErr, "\t-a : toggles area recovery [default = %s]\n", fRecovery? "yes": "no" ); + fprintf( pErr, "\t-p : optimizes power by minimizing switching activity [default = %s]\n", fSwitching? "yes": "no" ); + fprintf( pErr, "\t-v : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : prints the command usage\n"); + return 1; +} + + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandSeq( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtkRes; + int c; + extern Abc_Ntk_t * Abc_NtkSuperChoice( Abc_Ntk_t * pNtk ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "h" ) ) != EOF ) + { + switch ( c ) + { + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + printf( "This command is not yet implemented.\n" ); + return 0; + + if ( !Abc_NtkIsStrash(pNtk) ) + { + fprintf( pErr, "Works only for AIG.\n" ); + return 1; + } + + // get the new network + pNtkRes = Abc_NtkAigToSeq( pNtk ); + if ( pNtkRes == NULL ) + { + fprintf( pErr, "Converting to sequential AIG has failed.\n" ); + return 1; + } + // replace the current network + Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes ); + return 0; + +usage: + fprintf( pErr, "usage: seq [-h]\n" ); + fprintf( pErr, "\t converts AIG into sequential AIG (while sweeping latches)\n" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandRetime( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk; + int c; + int fForward; + int fBackward; + + extern Abc_Ntk_t * Abc_NtkSuperChoice( Abc_Ntk_t * pNtk ); + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fForward = 0; + fBackward = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "fbh" ) ) != EOF ) + { + switch ( c ) + { + case 'f': + fForward ^= 1; + break; + case 'b': + fBackward ^= 1; + break; + case 'h': + goto usage; + default: + goto usage; + } + } + + if ( pNtk == NULL ) + { + fprintf( pErr, "Empty network.\n" ); + return 1; + } + + printf( "This command is not yet implemented.\n" ); + return 0; + + + if ( !Abc_NtkIsSeq(pNtk) ) + { + fprintf( pErr, "Works only for sequential AIG.\n" ); + return 1; + } + + // get the new network + if ( fForward ) + Abc_NtkSeqRetimeForward( pNtk ); + else if ( fBackward ) + Abc_NtkSeqRetimeBackward( pNtk ); + else + Abc_NtkSeqRetimeDelay( pNtk ); + return 0; + +usage: + fprintf( pErr, "usage: retime [-fbh]\n" ); + fprintf( pErr, "\t retimes sequential AIG (default is Pan's algorithm)\n" ); + fprintf( pErr, "\t-f : toggle forward retiming [default = %s]\n", fForward? "yes": "no" ); + fprintf( pErr, "\t-b : toggle backward retiming [default = %s]\n", fBackward? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + return 1; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandCec( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtk1, * pNtk2; + int fDelete1, fDelete2; + char ** pArgvNew; + int nArgcNew; + int c; + int fSat; + int fVerbose; + + extern void Abc_NtkCecSat( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2 ); + extern void Abc_NtkCecFraig( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fVerbose ); + + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + fSat = 0; + fVerbose = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "svh" ) ) != EOF ) + { + switch ( c ) + { + case 's': + fSat ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + default: + goto usage; + } + } + + pArgvNew = argv + util_optind; + nArgcNew = argc - util_optind; + if ( !Abc_NtkPrepareTwoNtks( pErr, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2 ) ) + return 1; + + // perform equivalence checking + if ( fSat ) + Abc_NtkCecSat( pNtk1, pNtk2 ); + else + Abc_NtkCecFraig( pNtk1, pNtk2, fVerbose ); + + if ( fDelete1 ) Abc_NtkDelete( pNtk1 ); + if ( fDelete2 ) Abc_NtkDelete( pNtk2 ); + return 0; + +usage: + fprintf( pErr, "usage: cec [-svh] <file1> <file2>\n" ); + fprintf( pErr, "\t performs combinational equivalence checking\n" ); + fprintf( pErr, "\t-s : toggle \"SAT only\" and \"FRAIG + SAT\" [default = %s]\n", fSat? "SAT only": "FRAIG + SAT" ); + fprintf( pErr, "\t-v : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\tfile1 : (optional) the file with the first network\n"); + fprintf( pErr, "\tfile2 : (optional) the file with the second network\n"); + fprintf( pErr, "\t if no files are given, uses the current network and its spec\n"); + fprintf( pErr, "\t if one file is given, uses the current network and the file\n"); + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_CommandSec( Abc_Frame_t * pAbc, int argc, char ** argv ) +{ + FILE * pOut, * pErr; + Abc_Ntk_t * pNtk, * pNtk1, * pNtk2; + int fDelete1, fDelete2; + char ** pArgvNew; + int nArgcNew; + int c; + int fSat; + int nFrames; + + extern void Abc_NtkSecSat( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nFrames ); + extern void Abc_NtkSecFraig( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nFrames ); + + + pNtk = Abc_FrameReadNet(pAbc); + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set defaults + nFrames = 3; + fSat = 0; + util_getopt_reset(); + while ( ( c = util_getopt( argc, argv, "Fsh" ) ) != EOF ) + { + switch ( c ) + { + case 'F': + if ( util_optind >= argc ) + { + fprintf( pErr, "Command line switch \"-F\" should be followed by an integer.\n" ); + goto usage; + } + nFrames = atoi(argv[util_optind]); + util_optind++; + if ( nFrames < 0 ) + goto usage; + break; + case 's': + fSat ^= 1; + break; + default: + goto usage; + } + } + + pArgvNew = argv + util_optind; + nArgcNew = argc - util_optind; + if ( !Abc_NtkPrepareTwoNtks( pErr, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2 ) ) + return 1; + + // perform equivalence checking + if ( fSat ) + Abc_NtkSecSat( pNtk1, pNtk2, nFrames ); + else + Abc_NtkSecFraig( pNtk1, pNtk2, nFrames ); + + if ( fDelete1 ) Abc_NtkDelete( pNtk1 ); + if ( fDelete2 ) Abc_NtkDelete( pNtk2 ); + return 0; + +usage: + fprintf( pErr, "usage: sec [-sh] [-F num] <file1> <file2>\n" ); + fprintf( pErr, "\t performs bounded sequential equivalence checking\n" ); + fprintf( pErr, "\t-s : toggle \"SAT only\" and \"FRAIG + SAT\" [default = %s]\n", fSat? "SAT only": "FRAIG + SAT" ); + fprintf( pErr, "\t-h : print the command usage\n"); + fprintf( pErr, "\t-F num : the number of time frames to use [default = %d]\n", nFrames ); + fprintf( pErr, "\tfile1 : (optional) the file with the first network\n"); + fprintf( pErr, "\tfile2 : (optional) the file with the second network\n"); + fprintf( pErr, "\t if no files are given, uses the current network and its spec\n"); + fprintf( pErr, "\t if one file is given, uses the current network and the file\n"); + return 1; +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcAttach.c b/src/base/abci/abcAttach.c new file mode 100644 index 00000000..a8e06555 --- /dev/null +++ b/src/base/abci/abcAttach.c @@ -0,0 +1,405 @@ +/**CFile**************************************************************** + + FileName [abcAttach.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Attaches the library gates to the current network.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcAttach.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "main.h" +#include "mio.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +#define ATTACH_FULL (~((unsigned)0)) +#define ATTACH_MASK(n) ((~((unsigned)0)) >> (32-(n))) + +static void Abc_AttachSetupTruthTables( unsigned uTruths[][2] ); +static void Abc_AttachComputeTruth( char * pSop, unsigned uTruthsIn[][2], unsigned * uTruthNode ); +static Mio_Gate_t * Abc_AttachFind( Mio_Gate_t ** ppGates, unsigned ** puTruthGates, int nGates, unsigned * uTruthNode, int * Perm ); +static int Abc_AttachCompare( unsigned ** puTruthGates, int nGates, unsigned * uTruthNode ); +static int Abc_NodeAttach( Abc_Obj_t * pNode, Mio_Gate_t ** ppGates, unsigned ** puTruthGates, int nGates, unsigned uTruths[][2] ); +static void Abc_TruthPermute( char * pPerm, int nVars, unsigned * uTruthNode, unsigned * uTruthPerm ); + +static char ** s_pPerms = NULL; +static int s_nPerms; + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Attaches gates from the current library to the internal nodes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkAttach( Abc_Ntk_t * pNtk ) +{ + int fCheck = 1; + Mio_Library_t * pGenlib; + unsigned ** puTruthGates; + unsigned uTruths[6][2]; + Abc_Obj_t * pNode; + Mio_Gate_t ** ppGates; + int nGates, nFanins, i; + + assert( Abc_NtkIsSopLogic(pNtk) ); + + // check that the library is available + pGenlib = Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()); + if ( pGenlib == NULL ) + { + printf( "The current library is not available.\n" ); + return 0; + } + + // start the truth tables + Abc_AttachSetupTruthTables( uTruths ); + + // collect all the gates + ppGates = Mio_CollectRoots( pGenlib, 6, (float)1.0e+20, 1, &nGates ); + + // derive the gate truth tables + puTruthGates = ALLOC( unsigned *, nGates ); + puTruthGates[0] = ALLOC( unsigned, 2 * nGates ); + for ( i = 1; i < nGates; i++ ) + puTruthGates[i] = puTruthGates[i-1] + 2; + for ( i = 0; i < nGates; i++ ) + Mio_DeriveTruthTable( ppGates[i], uTruths, Mio_GateReadInputs(ppGates[i]), 6, puTruthGates[i] ); + + // assign the gates to pNode->pCopy + Abc_NtkCleanCopy( pNtk ); + Abc_NtkForEachNode( pNtk, pNode, i ) + { + nFanins = Abc_ObjFaninNum(pNode); + if ( nFanins == 0 ) + { + if ( Abc_SopIsConst1(pNode->pData) ) + pNode->pCopy = (Abc_Obj_t *)Mio_LibraryReadConst1(pGenlib); + else + pNode->pCopy = (Abc_Obj_t *)Mio_LibraryReadConst0(pGenlib); + } + else if ( nFanins == 1 ) + { + if ( Abc_SopIsBuf(pNode->pData) ) + pNode->pCopy = (Abc_Obj_t *)Mio_LibraryReadBuf(pGenlib); + else + pNode->pCopy = (Abc_Obj_t *)Mio_LibraryReadInv(pGenlib); + } + else if ( nFanins > 6 ) + { + printf( "Cannot attach gate with more than 6 inputs to node %s.\n", Abc_ObjName(pNode) ); + free( puTruthGates[0] ); + free( puTruthGates ); + free( ppGates ); + return 0; + } + else if ( !Abc_NodeAttach( pNode, ppGates, puTruthGates, nGates, uTruths ) ) + { + printf( "Could not attach the library gate to node %s.\n", Abc_ObjName(pNode) ); + free( puTruthGates[0] ); + free( puTruthGates ); + free( ppGates ); + return 0; + } + } + free( puTruthGates[0] ); + free( puTruthGates ); + free( ppGates ); + FREE( s_pPerms ); + + // perform the final transformation + Abc_NtkForEachNode( pNtk, pNode, i ) + { + if ( pNode->pCopy == NULL ) + { + printf( "Some elementary gates (constant, buffer, or inverter) are missing in the library.\n" ); + return 0; + } + } + + // replace SOP representation by the gate representation + Abc_NtkForEachNode( pNtk, pNode, i ) + pNode->pData = pNode->pCopy, pNode->pCopy = NULL; + pNtk->ntkFunc = ABC_FUNC_MAP; + Extra_MmFlexStop( pNtk->pManFunc, 0 ); + pNtk->pManFunc = pGenlib; + + printf( "Library gates are successfully attached to the nodes.\n" ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + { + printf( "Abc_NtkAttach: The network check has failed.\n" ); + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeAttach( Abc_Obj_t * pNode, Mio_Gate_t ** ppGates, unsigned ** puTruthGates, int nGates, unsigned uTruths[][2] ) +{ + int Perm[10]; + int pTempInts[10]; + unsigned uTruthNode[2]; + Abc_Obj_t * pFanin; + Mio_Gate_t * pGate; + int nFanins, i; + + // compute the node's truth table + Abc_AttachComputeTruth( pNode->pData, uTruths, uTruthNode ); + // find the matching gate and permutation + pGate = Abc_AttachFind( ppGates, puTruthGates, nGates, uTruthNode, Perm ); + if ( pGate == NULL ) + return 0; + // permute the fanins + nFanins = Abc_ObjFaninNum(pNode); + Abc_ObjForEachFanin( pNode, pFanin, i ) + pTempInts[i] = pFanin->Id; + for ( i = 0; i < nFanins; i++ ) + pNode->vFanins.pArray[Perm[i]].iFan = pTempInts[i]; + // set the gate + pNode->pCopy = (Abc_Obj_t *)pGate; + return 1; +} + +/**Function************************************************************* + + Synopsis [Sets up the truth tables.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_AttachSetupTruthTables( unsigned uTruths[][2] ) +{ + int m, v; + for ( v = 0; v < 5; v++ ) + uTruths[v][0] = 0; + // set up the truth tables + for ( m = 0; m < 32; m++ ) + for ( v = 0; v < 5; v++ ) + if ( m & (1 << v) ) + uTruths[v][0] |= (1 << m); + // make adjustments for the case of 6 variables + for ( v = 0; v < 5; v++ ) + uTruths[v][1] = uTruths[v][0]; + uTruths[5][0] = 0; + uTruths[5][1] = ATTACH_FULL; +} + +/**Function************************************************************* + + Synopsis [Compute the truth table of the node's cover.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_AttachComputeTruth( char * pSop, unsigned uTruthsIn[][2], unsigned * uTruthRes ) +{ +// Mvc_Cube_t * pCube; + unsigned uSignCube[2]; + int Value; +// int nInputs = pCover->nBits/2; + int nInputs = 6; + int nFanins = Abc_SopGetVarNum(pSop); + char * pCube; + int k; + + // make sure that the number of input truth tables in equal to the number of gate inputs + assert( nInputs < 7 ); + + // clean the resulting truth table + uTruthRes[0] = 0; + uTruthRes[1] = 0; + if ( nInputs < 6 ) + { + // consider the case when only one unsigned can be used +// Mvc_CoverForEachCube( pCover, pCube ) + Abc_SopForEachCube( pSop, nFanins, pCube ) + { + uSignCube[0] = ATTACH_FULL; +// Mvc_CubeForEachVarValue( pCover, pCube, Var, Value ) + Abc_CubeForEachVar( pCube, Value, k ) + { + if ( Value == '0' ) + uSignCube[0] &= ~uTruthsIn[k][0]; + else if ( Value == '1' ) + uSignCube[0] &= uTruthsIn[k][0]; + } + uTruthRes[0] |= uSignCube[0]; + } + if ( Abc_SopGetPhase(pSop) == 0 ) + uTruthRes[0] = ~uTruthRes[0]; + if ( nInputs < 5 ) + uTruthRes[0] &= ATTACH_MASK(1<<nInputs); + } + else + { + // consider the case when two unsigneds should be used +// Mvc_CoverForEachCube( pCover, pCube ) + Abc_SopForEachCube( pSop, nFanins, pCube ) + { + uSignCube[0] = ATTACH_FULL; + uSignCube[1] = ATTACH_FULL; +// Mvc_CubeForEachVarValue( pCover, pCube, Var, Value ) + Abc_CubeForEachVar( pCube, Value, k ) + { + if ( Value == '0' ) + { + uSignCube[0] &= ~uTruthsIn[k][0]; + uSignCube[1] &= ~uTruthsIn[k][1]; + } + else if ( Value == '1' ) + { + uSignCube[0] &= uTruthsIn[k][0]; + uSignCube[1] &= uTruthsIn[k][1]; + } + } + uTruthRes[0] |= uSignCube[0]; + uTruthRes[1] |= uSignCube[1]; + } + + // complement if the SOP is complemented + if ( Abc_SopGetPhase(pSop) == 0 ) + { + uTruthRes[0] = ~uTruthRes[0]; + uTruthRes[1] = ~uTruthRes[1]; + } + } +} + +/**Function************************************************************* + + Synopsis [Find the gate by truth table.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Mio_Gate_t * Abc_AttachFind( Mio_Gate_t ** ppGates, unsigned ** puTruthGates, int nGates, unsigned * uTruthNode, int * Perm ) +{ + unsigned uTruthPerm[2]; + int i, v, iNum; + + // try the gates without permutation + if ( (iNum = Abc_AttachCompare( puTruthGates, nGates, uTruthNode )) >= 0 ) + { + for ( v = 0; v < 6; v++ ) + Perm[v] = v; + return ppGates[iNum]; + } + // get permutations + if ( s_pPerms == NULL ) + { + s_pPerms = Extra_Permutations( 6 ); + s_nPerms = Extra_Factorial( 6 ); + } + // try permutations + for ( i = 0; i < s_nPerms; i++ ) + { + Abc_TruthPermute( s_pPerms[i], 6, uTruthNode, uTruthPerm ); + if ( (iNum = Abc_AttachCompare( puTruthGates, nGates, uTruthPerm )) >= 0 ) + { + for ( v = 0; v < 6; v++ ) + Perm[v] = (int)s_pPerms[i][v]; + return ppGates[iNum]; + } + } + return NULL; +} + +/**Function************************************************************* + + Synopsis [Find the gate by truth table.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_AttachCompare( unsigned ** puTruthGates, int nGates, unsigned * uTruthNode ) +{ + int i; + for ( i = 0; i < nGates; i++ ) + if ( puTruthGates[i][0] == uTruthNode[0] && puTruthGates[i][1] == uTruthNode[1] ) + return i; + return -1; +} + +/**Function************************************************************* + + Synopsis [Permutes the 6-input truth table.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_TruthPermute( char * pPerm, int nVars, unsigned * uTruthNode, unsigned * uTruthPerm ) +{ + int nMints, iMintPerm, iMint, v; + uTruthPerm[0] = uTruthPerm[1] = 0; + nMints = (1 << nVars); + for ( iMint = 0; iMint < nMints; iMint++ ) + { + if ( (uTruthNode[iMint/32] & (1 << (iMint%32))) == 0 ) + continue; + iMintPerm = 0; + for ( v = 0; v < nVars; v++ ) + if ( iMint & (1 << v) ) + iMintPerm |= (1 << pPerm[v]); + uTruthPerm[iMintPerm/32] |= (1 << (iMintPerm%32)); + } +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcBalance.c b/src/base/abci/abcBalance.c new file mode 100644 index 00000000..5042d0d5 --- /dev/null +++ b/src/base/abci/abcBalance.c @@ -0,0 +1,239 @@ +/**CFile**************************************************************** + + FileName [abcBalance.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Performs global balancing of the AIG by the number of levels.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcBalance.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static void Abc_NtkBalancePerform( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkAig, bool fDuplicate ); +static Abc_Obj_t * Abc_NodeBalance_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNode, Vec_Vec_t * vStorage, bool fDuplicate ); +static Vec_Ptr_t * Abc_NodeBalanceCone( Abc_Obj_t * pNode, Vec_Vec_t * vSuper, int fDuplicate ); +static int Abc_NodeBalanceCone_rec( Abc_Obj_t * pNode, Vec_Ptr_t * vSuper, bool fFirst, bool fDuplicate ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Balances the AIG network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkBalance( Abc_Ntk_t * pNtk, bool fDuplicate ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkAig; + assert( Abc_NtkIsStrash(pNtk) ); + // perform balancing + pNtkAig = Abc_NtkStartFrom( pNtk, ABC_TYPE_STRASH, ABC_FUNC_AIG ); + Abc_NtkBalancePerform( pNtk, pNtkAig, fDuplicate ); + Abc_NtkFinalize( pNtk, pNtkAig ); + // make sure everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkAig ) ) + { + printf( "Abc_NtkBalance: The network check has failed.\n" ); + Abc_NtkDelete( pNtkAig ); + return NULL; + } + return pNtkAig; +} + +/**Function************************************************************* + + Synopsis [Balances the AIG network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkBalancePerform( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkAig, bool fDuplicate ) +{ + int fCheck = 1; + ProgressBar * pProgress; + Vec_Vec_t * vStorage; + Abc_Obj_t * pNode, * pDriver; + int i; + + // copy the constant node + Abc_AigConst1(pNtk->pManFunc)->pCopy = Abc_AigConst1(pNtkAig->pManFunc); + // set the level of PIs of AIG according to the arrival times of the old network + Abc_NtkSetNodeLevelsArrival( pNtk ); + // allocate temporary storage for supergates + vStorage = Vec_VecStart( Abc_AigGetLevelNum(pNtk) + 1 ); + // perform balancing of POs + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCoNum(pNtk) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // strash the driver node + pDriver = Abc_ObjFanin0(pNode); + Abc_NodeBalance_rec( pNtkAig, pDriver, vStorage, fDuplicate ); + } + Extra_ProgressBarStop( pProgress ); + Vec_VecFree( vStorage ); +} + +/**Function************************************************************* + + Synopsis [Rebalances the multi-input node rooted at pNodeOld.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeBalance_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNodeOld, Vec_Vec_t * vStorage, bool fDuplicate ) +{ + Abc_Aig_t * pMan = pNtkNew->pManFunc; + Abc_Obj_t * pNodeNew, * pNode1, * pNode2; + Vec_Ptr_t * vSuper; + int i; + assert( !Abc_ObjIsComplement(pNodeOld) ); + // return if the result if known + if ( pNodeOld->pCopy ) + return pNodeOld->pCopy; + assert( Abc_ObjIsNode(pNodeOld) ); + // get the implication supergate + vSuper = Abc_NodeBalanceCone( pNodeOld, vStorage, fDuplicate ); + if ( vSuper->nSize == 0 ) + { // it means that the supergate contains two nodes in the opposite polarity + pNodeOld->pCopy = Abc_ObjNot(Abc_AigConst1(pMan)); + return pNodeOld->pCopy; + } + // for each old node, derive the new well-balanced node + for ( i = 0; i < vSuper->nSize; i++ ) + { + pNodeNew = Abc_NodeBalance_rec( pNtkNew, Abc_ObjRegular(vSuper->pArray[i]), vStorage, fDuplicate ); + vSuper->pArray[i] = Abc_ObjNotCond( pNodeNew, Abc_ObjIsComplement(vSuper->pArray[i]) ); + } + // sort the new nodes by level in the decreasing order + Vec_PtrSort( vSuper, Abc_NodeCompareLevelsDecrease ); + // balance the nodes + assert( vSuper->nSize > 1 ); + while ( vSuper->nSize > 1 ) + { + pNode1 = Vec_PtrPop(vSuper); + pNode2 = Vec_PtrPop(vSuper); + Abc_VecObjPushUniqueOrderByLevel( vSuper, Abc_AigAnd(pMan, pNode1, pNode2) ); + } + // make sure the balanced node is not assigned + assert( pNodeOld->pCopy == NULL ); + // mark the old node with the new node + pNodeOld->pCopy = vSuper->pArray[0]; + return pNodeOld->pCopy; +} + +/**Function************************************************************* + + Synopsis [Collects the nodes in the cone delimited by fMarkA==1.] + + Description [Returns -1 if the AND-cone has the same node in both polarities. + Returns 1 if the AND-cone has the same node in the same polarity. Returns 0 + if the AND-cone has no repeated nodes.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Abc_NodeBalanceCone( Abc_Obj_t * pNode, Vec_Vec_t * vStorage, int fDuplicate ) +{ + Vec_Ptr_t * vNodes; + int RetValue, i; + assert( !Abc_ObjIsComplement(pNode) ); + vNodes = Vec_VecEntry( vStorage, pNode->Level ); + Vec_PtrClear( vNodes ); + RetValue = Abc_NodeBalanceCone_rec( pNode, vNodes, 1, fDuplicate ); + assert( vNodes->nSize > 0 ); + for ( i = 0; i < vNodes->nSize; i++ ) + Abc_ObjRegular((Abc_Obj_t *)vNodes->pArray[i])->fMarkB = 0; + if ( RetValue == -1 ) + vNodes->nSize = 0; + return vNodes; +} + + +/**Function************************************************************* + + Synopsis [Collects the nodes in the cone delimited by fMarkA==1.] + + Description [Returns -1 if the AND-cone has the same node in both polarities. + Returns 1 if the AND-cone has the same node in the same polarity. Returns 0 + if the AND-cone has no repeated nodes.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeBalanceCone_rec( Abc_Obj_t * pNode, Vec_Ptr_t * vSuper, bool fFirst, bool fDuplicate ) +{ + int RetValue1, RetValue2, i; + // check if the node is visited + if ( Abc_ObjRegular(pNode)->fMarkB ) + { + // check if the node occurs in the same polarity + for ( i = 0; i < vSuper->nSize; i++ ) + if ( vSuper->pArray[i] == pNode ) + return 1; + // check if the node is present in the opposite polarity + for ( i = 0; i < vSuper->nSize; i++ ) + if ( vSuper->pArray[i] == Abc_ObjNot(pNode) ) + return -1; + assert( 0 ); + return 0; + } + // if the new node is complemented or a PI, another gate begins + if ( !fFirst && (Abc_ObjIsComplement(pNode) || !Abc_ObjIsNode(pNode) || !fDuplicate && (Abc_ObjFanoutNum(pNode) > 1)) ) + { + Vec_PtrPush( vSuper, pNode ); + Abc_ObjRegular(pNode)->fMarkB = 1; + return 0; + } + assert( !Abc_ObjIsComplement(pNode) ); + assert( Abc_ObjIsNode(pNode) ); + // go through the branches + RetValue1 = Abc_NodeBalanceCone_rec( Abc_ObjChild0(pNode), vSuper, 0, fDuplicate ); + RetValue2 = Abc_NodeBalanceCone_rec( Abc_ObjChild1(pNode), vSuper, 0, fDuplicate ); + if ( RetValue1 == -1 || RetValue2 == -1 ) + return -1; + // return 1 if at least one branch has a duplicate + return RetValue1 || RetValue2; +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcCollapse.c b/src/base/abci/abcCollapse.c new file mode 100644 index 00000000..4e359506 --- /dev/null +++ b/src/base/abci/abcCollapse.c @@ -0,0 +1,147 @@ +/**CFile**************************************************************** + + FileName [abcCollapse.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Collapsing the network into two-levels.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcCollapse.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static Abc_Ntk_t * Abc_NtkFromGlobalBdds( Abc_Ntk_t * pNtk ); +static Abc_Obj_t * Abc_NodeFromGlobalBdds( Abc_Ntk_t * pNtkNew, DdManager * dd, DdNode * bFunc ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Collapses the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkCollapse( Abc_Ntk_t * pNtk, int fVerbose ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + + assert( Abc_NtkIsStrash(pNtk) ); + + // compute the global BDDs + if ( Abc_NtkGlobalBdds(pNtk, 0) == NULL ) + return NULL; + if ( fVerbose ) + printf( "The shared BDD size is %d nodes.\n", Cudd_ReadKeys(pNtk->pManGlob) - Cudd_ReadDead(pNtk->pManGlob) ); + + // create the new network + pNtkNew = Abc_NtkFromGlobalBdds( pNtk ); + Abc_NtkFreeGlobalBdds( pNtk ); + if ( pNtkNew == NULL ) + { + Cudd_Quit( pNtk->pManGlob ); + pNtk->pManGlob = NULL; + return NULL; + } + Extra_StopManager( pNtk->pManGlob ); + pNtk->pManGlob = NULL; + + // make the network minimum base + Abc_NtkMinimumBase( pNtkNew ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkCollapse: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Derives the network with the given global BDD.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFromGlobalBdds( Abc_Ntk_t * pNtk ) +{ + ProgressBar * pProgress; + Abc_Ntk_t * pNtkNew; + Abc_Obj_t * pNode, * pNodeNew; + DdManager * dd = pNtk->pManGlob; + int i; + // start the new network + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_LOGIC, ABC_FUNC_BDD ); + // make sure the new manager has the same number of inputs + Cudd_bddIthVar( pNtkNew->pManFunc, dd->size-1 ); + // process the POs + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCoNum(pNtk) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + pNodeNew = Abc_NodeFromGlobalBdds( pNtkNew, dd, Vec_PtrEntry(pNtk->vFuncsGlob, i) ); + Abc_ObjAddFanin( pNode->pCopy, pNodeNew ); + } + Extra_ProgressBarStop( pProgress ); + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Derives the network with the given global BDD.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFromGlobalBdds( Abc_Ntk_t * pNtkNew, DdManager * dd, DdNode * bFunc ) +{ + Abc_Obj_t * pNodeNew, * pTemp; + int i; + // create a new node + pNodeNew = Abc_NtkCreateNode( pNtkNew ); + // add the fanins in the order, in which they appear in the reordered manager + Abc_NtkForEachCi( pNtkNew, pTemp, i ) + Abc_ObjAddFanin( pNodeNew, Abc_NtkCi(pNtkNew, dd->invperm[i]) ); + // transfer the function + pNodeNew->pData = Extra_TransferLevelByLevel( dd, pNtkNew->pManFunc, bFunc ); Cudd_Ref( pNodeNew->pData ); + return pNodeNew; +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcCut.c b/src/base/abci/abcCut.c new file mode 100644 index 00000000..f487bd1b --- /dev/null +++ b/src/base/abci/abcCut.c @@ -0,0 +1,190 @@ +/**CFile**************************************************************** + + FileName [abcCut.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Interface to cut computation.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcCut.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "cut.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Computes the cuts for the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cut_Man_t * Abc_NtkCuts( Abc_Ntk_t * pNtk, Cut_Params_t * pParams ) +{ + Cut_Man_t * p; + Abc_Obj_t * pObj, * pDriver, * pNode; + Vec_Ptr_t * vNodes; + Vec_Int_t * vChoices; + int i; + int clk = clock(); + + assert( Abc_NtkIsStrash(pNtk) ); + + // start the manager + pParams->nIdsMax = Abc_NtkObjNumMax( pNtk ); + p = Cut_ManStart( pParams ); + if ( pParams->fDrop ) + Cut_ManSetFanoutCounts( p, Abc_NtkFanoutCounts(pNtk) ); + // set cuts for PIs + Abc_NtkForEachCi( pNtk, pObj, i ) + if ( Abc_ObjFanoutNum(pObj) > 0 ) + Cut_NodeSetTriv( p, pObj->Id ); + // compute cuts for internal nodes + vNodes = Abc_AigDfs( pNtk, 0, 1 ); + vChoices = Vec_IntAlloc( 100 ); + Vec_PtrForEachEntry( vNodes, pObj, i ) + { + // when we reached a CO, it is time to deallocate the cuts + if ( Abc_ObjIsCo(pObj) ) + { + if ( pParams->fDrop ) + Cut_NodeTryDroppingCuts( p, Abc_ObjFaninId0(pObj) ); + continue; + } + // skip constant node, it has no cuts + if ( Abc_NodeIsConst(pObj) ) + continue; + // compute the cuts to the internal node + Abc_NodeGetCuts( p, pObj ); + // add cuts due to choices + if ( Abc_NodeIsAigChoice(pObj) ) + { + Vec_IntClear( vChoices ); + for ( pNode = pObj; pNode; pNode = pNode->pData ) + Vec_IntPush( vChoices, pNode->Id ); + Cut_NodeUnionCuts( p, vChoices ); + } + } + if ( !pParams->fSeq ) + { + Vec_PtrFree( vNodes ); + Vec_IntFree( vChoices ); +PRT( "Total", clock() - clk ); + return p; + } + assert( 0 ); + + // compute sequential cuts + Abc_NtkIncrementTravId( pNtk ); + Abc_NtkForEachLatch( pNtk, pObj, i ) + { + pDriver = Abc_ObjFanin0(pObj); + if ( !Abc_ObjIsNode(pDriver) ) + continue; + if ( Abc_NodeIsTravIdCurrent(pDriver) ) + continue; + Abc_NodeSetTravIdCurrent(pDriver); + Cut_NodeSetComputedAsNew( p, pDriver->Id ); + } + // compute as long as new cuts appear + + + return p; +} + +/**Function************************************************************* + + Synopsis [Computes the cuts for the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void * Abc_NodeGetCutsRecursive( void * p, Abc_Obj_t * pObj ) +{ + void * pList; + if ( pList = Abc_NodeReadCuts( p, pObj ) ) + return pList; + Abc_NodeGetCutsRecursive( p, Abc_ObjFanin0(pObj) ); + Abc_NodeGetCutsRecursive( p, Abc_ObjFanin1(pObj) ); + return Abc_NodeGetCuts( p, pObj ); +} + +/**Function************************************************************* + + Synopsis [Computes the cuts for the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void * Abc_NodeGetCuts( void * p, Abc_Obj_t * pObj ) +{ + return Cut_NodeComputeCuts( p, pObj->Id, Abc_ObjFaninId0(pObj), Abc_ObjFaninId1(pObj), + Abc_ObjFaninC0(pObj), Abc_ObjFaninC1(pObj) ); +} + +/**Function************************************************************* + + Synopsis [Computes the cuts for the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void * Abc_NodeReadCuts( void * p, Abc_Obj_t * pObj ) +{ + return Cut_NodeReadCuts( p, pObj->Id ); +} + +/**Function************************************************************* + + Synopsis [Computes the cuts for the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeFreeCuts( void * p, Abc_Obj_t * pObj ) +{ + Cut_NodeFreeCuts( p, pObj->Id ); +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcDsd.c b/src/base/abci/abcDsd.c new file mode 100644 index 00000000..013b7ac4 --- /dev/null +++ b/src/base/abci/abcDsd.c @@ -0,0 +1,539 @@ +/**CFile**************************************************************** + + FileName [abcDsd.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Decomposes the network using disjoint-support decomposition.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcDsd.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "dsd.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static Abc_Ntk_t * Abc_NtkDsdInternal( Abc_Ntk_t * pNtk, bool fVerbose, bool fPrint, bool fShort ); +static void Abc_NtkDsdConstruct( Dsd_Manager_t * pManDsd, Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ); +static Abc_Obj_t * Abc_NtkDsdConstructNode( Dsd_Manager_t * pManDsd, Dsd_Node_t * pNodeDsd, Abc_Ntk_t * pNtkNew ); + +static Vec_Ptr_t * Abc_NtkCollectNodesForDsd( Abc_Ntk_t * pNtk ); +static void Abc_NodeDecompDsdAndMux( Abc_Obj_t * pNode, Vec_Ptr_t * vNodes, Dsd_Manager_t * pManDsd, bool fRecursive ); +static bool Abc_NodeIsForDsd( Abc_Obj_t * pNode ); +static int Abc_NodeFindMuxVar( DdManager * dd, DdNode * bFunc, int nVars ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Derives the DSD network.] + + Description [Takes the strashed network (pNtk), derives global BDDs for + the combinational outputs of this network, and decomposes these BDDs using + disjoint support decomposition. Finally, constructs and return a new + network, which is topologically equivalent to the decomposition tree. + Allocates and frees a new BDD manager and a new DSD manager.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkDsdGlobal( Abc_Ntk_t * pNtk, bool fVerbose, bool fPrint, bool fShort ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + + assert( Abc_NtkIsStrash(pNtk) ); + + // perform FPGA mapping + if ( Abc_NtkGlobalBdds(pNtk, 0) == NULL ) + return NULL; + if ( fVerbose ) + printf( "The shared BDD size is %d nodes.\n", Cudd_ReadKeys(pNtk->pManGlob) - Cudd_ReadDead(pNtk->pManGlob) ); + + // transform the result of mapping into a BDD network + pNtkNew = Abc_NtkDsdInternal( pNtk, fVerbose, fPrint, fShort ); + if ( pNtkNew == NULL ) + { + Cudd_Quit( pNtk->pManGlob ); + pNtk->pManGlob = NULL; + return NULL; + } + Extra_StopManager( pNtk->pManGlob ); + pNtk->pManGlob = NULL; + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkDsdGlobal: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Constructs the decomposed network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkDsdInternal( Abc_Ntk_t * pNtk, bool fVerbose, bool fPrint, bool fShort ) +{ + DdManager * dd = pNtk->pManGlob; + Dsd_Manager_t * pManDsd; + Abc_Ntk_t * pNtkNew; + DdNode * bFunc; + char ** ppNamesCi, ** ppNamesCo; + Abc_Obj_t * pObj; + int i; + + // complement the global functions + Abc_NtkForEachCo( pNtk, pObj, i ) + { + bFunc = Vec_PtrEntry(pNtk->vFuncsGlob, i); + Vec_PtrWriteEntry(pNtk->vFuncsGlob, i, Cudd_NotCond(bFunc, Abc_ObjFaninC0(pObj)) ); + } + + // perform the decomposition + assert( Vec_PtrSize(pNtk->vFuncsGlob) == Abc_NtkCoNum(pNtk) ); + pManDsd = Dsd_ManagerStart( dd, Abc_NtkCiNum(pNtk), fVerbose ); + Dsd_Decompose( pManDsd, (DdNode **)pNtk->vFuncsGlob->pArray, Abc_NtkCoNum(pNtk) ); + Abc_NtkFreeGlobalBdds( pNtk ); + if ( pManDsd == NULL ) + { + Cudd_Quit( dd ); + return NULL; + } + + // start the new network + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_LOGIC, ABC_FUNC_BDD ); + // make sure the new manager has enough inputs + Cudd_bddIthVar( pNtkNew->pManFunc, dd->size-1 ); + // put the results into the new network (save new CO drivers in old CO drivers) + Abc_NtkDsdConstruct( pManDsd, pNtk, pNtkNew ); + // finalize the new network + Abc_NtkFinalize( pNtk, pNtkNew ); + // fix the problem with complemented and duplicated CO edges + Abc_NtkLogicMakeSimpleCos( pNtkNew, 0 ); + + if ( fPrint ) + { + ppNamesCi = Abc_NtkCollectCioNames( pNtk, 0 ); + ppNamesCo = Abc_NtkCollectCioNames( pNtk, 1 ); + Dsd_TreePrint( stdout, pManDsd, ppNamesCi, ppNamesCo, fShort, -1 ); + free( ppNamesCi ); + free( ppNamesCo ); + } + + // stop the DSD manager + Dsd_ManagerStop( pManDsd ); + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Constructs the decomposed network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkDsdConstruct( Dsd_Manager_t * pManDsd, Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ) +{ + Dsd_Node_t ** ppNodesDsd; + Dsd_Node_t * pNodeDsd; + Abc_Obj_t * pNode, * pNodeNew, * pDriver, * pConst1; + int i, nNodesDsd; + + // save the CI nodes in the DSD nodes + Abc_NtkForEachCi( pNtk, pNode, i ) + { + pNodeDsd = Dsd_ManagerReadInput( pManDsd, i ); + Dsd_NodeSetMark( pNodeDsd, (int)pNode->pCopy ); + } + // set the constant node + pConst1 = Abc_AigConst1(pNtk->pManFunc); + if ( Abc_ObjFanoutNum(pConst1) > 0 ) + pConst1->pCopy = Abc_NodeCreateConst1(pNtkNew); + + // collect DSD nodes in DFS order (leaves and const1 are not collected) + ppNodesDsd = Dsd_TreeCollectNodesDfs( pManDsd, &nNodesDsd ); + for ( i = 0; i < nNodesDsd; i++ ) + Abc_NtkDsdConstructNode( pManDsd, ppNodesDsd[i], pNtkNew ); + free( ppNodesDsd ); + + // set the pointers to the CO drivers + Abc_NtkForEachCo( pNtk, pNode, i ) + { + pDriver = Abc_ObjFanin0( pNode ); + if ( !Abc_ObjIsNode(pDriver) ) + continue; + if ( !Abc_NodeIsAigAnd(pDriver) ) + continue; + pNodeDsd = Dsd_ManagerReadRoot( pManDsd, i ); + pNodeNew = (Abc_Obj_t *)Dsd_NodeReadMark( Dsd_Regular(pNodeDsd) ); + assert( !Abc_ObjIsComplement(pNodeNew) ); + pDriver->pCopy = Abc_ObjNotCond( pNodeNew, Dsd_IsComplement(pNodeDsd) ); + } +} + +/**Function************************************************************* + + Synopsis [Performs DSD using the manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NtkDsdConstructNode( Dsd_Manager_t * pManDsd, Dsd_Node_t * pNodeDsd, Abc_Ntk_t * pNtkNew ) +{ + DdManager * ddDsd = Dsd_ManagerReadDd( pManDsd ); + DdManager * ddNew = pNtkNew->pManFunc; + Dsd_Node_t * pFaninDsd; + Abc_Obj_t * pNodeNew, * pFanin; + DdNode * bLocal, * bTemp, * bVar; + Dsd_Type_t Type; + int i, nDecs; + + // create the new node + pNodeNew = Abc_NtkCreateNode( pNtkNew ); + // add the fanins + Type = Dsd_NodeReadType( pNodeDsd ); + nDecs = Dsd_NodeReadDecsNum( pNodeDsd ); + assert( nDecs > 1 ); + for ( i = 0; i < nDecs; i++ ) + { + pFaninDsd = Dsd_NodeReadDec( pNodeDsd, i ); + pFanin = (Abc_Obj_t *)Dsd_NodeReadMark(Dsd_Regular(pFaninDsd)); + Abc_ObjAddFanin( pNodeNew, pFanin ); + assert( Type == DSD_NODE_OR || !Dsd_IsComplement(pFaninDsd) ); + } + + // create the local function depending on the type of the node + ddNew = pNtkNew->pManFunc; + switch ( Type ) + { + case DSD_NODE_CONST1: + { + bLocal = ddNew->one; Cudd_Ref( bLocal ); + break; + } + case DSD_NODE_OR: + { + bLocal = Cudd_Not(ddNew->one); Cudd_Ref( bLocal ); + for ( i = 0; i < nDecs; i++ ) + { + pFaninDsd = Dsd_NodeReadDec( pNodeDsd, i ); + bVar = Cudd_NotCond( ddNew->vars[i], Dsd_IsComplement(pFaninDsd) ); + bLocal = Cudd_bddOr( ddNew, bTemp = bLocal, bVar ); Cudd_Ref( bLocal ); + Cudd_RecursiveDeref( ddNew, bTemp ); + } + break; + } + case DSD_NODE_EXOR: + { + bLocal = Cudd_Not(ddNew->one); Cudd_Ref( bLocal ); + for ( i = 0; i < nDecs; i++ ) + { + bLocal = Cudd_bddXor( ddNew, bTemp = bLocal, ddNew->vars[i] ); Cudd_Ref( bLocal ); + Cudd_RecursiveDeref( ddNew, bTemp ); + } + break; + } + case DSD_NODE_PRIME: + { + bLocal = Dsd_TreeGetPrimeFunction( ddDsd, pNodeDsd ); Cudd_Ref( bLocal ); + bLocal = Extra_TransferLevelByLevel( ddDsd, ddNew, bTemp = bLocal ); Cudd_Ref( bLocal ); + Cudd_RecursiveDeref( ddDsd, bTemp ); + // bLocal is now in the new BDD manager + break; + } + default: + { + assert( 0 ); + break; + } + } + pNodeNew->pData = bLocal; + Dsd_NodeSetMark( pNodeDsd, (int)pNodeNew ); + return pNodeNew; +} + + + + + + +/**Function************************************************************* + + Synopsis [Recursively decomposes internal nodes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkDsdLocal( Abc_Ntk_t * pNtk, bool fVerbose, bool fRecursive ) +{ + int fCheck = 1; + Dsd_Manager_t * pManDsd; + DdManager * dd = pNtk->pManFunc; + Vec_Ptr_t * vNodes; + int i; + + assert( Abc_NtkIsBddLogic(pNtk) ); + + // make the network minimum base + Abc_NtkMinimumBase( pNtk ); + + // start the DSD manager + pManDsd = Dsd_ManagerStart( dd, dd->size, 0 ); + + // collect nodes for decomposition + vNodes = Abc_NtkCollectNodesForDsd( pNtk ); + for ( i = 0; i < vNodes->nSize; i++ ) + Abc_NodeDecompDsdAndMux( vNodes->pArray[i], vNodes, pManDsd, fRecursive ); + Vec_PtrFree( vNodes ); + + // stop the DSD manager + Dsd_ManagerStop( pManDsd ); + + // make sure everything is okay + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + { + printf( "Abc_NtkDsdRecursive: The network check has failed.\n" ); + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Collects the nodes that may need decomposition.] + + Description [The nodes that do not need decomposition are those + whose BDD has more internal nodes than the support size.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Abc_NtkCollectNodesForDsd( Abc_Ntk_t * pNtk ) +{ + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode; + int i; + vNodes = Vec_PtrAlloc( 100 ); + Abc_NtkForEachNode( pNtk, pNode, i ) + { + if ( Abc_NodeIsForDsd(pNode) ) + Vec_PtrPush( vNodes, pNode ); + } + return vNodes; +} + +/**Function************************************************************* + + Synopsis [Performs decomposition of one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeDecompDsdAndMux( Abc_Obj_t * pNode, Vec_Ptr_t * vNodes, Dsd_Manager_t * pManDsd, bool fRecursive ) +{ + DdManager * dd = pNode->pNtk->pManFunc; + Abc_Obj_t * pRoot, * pFanin, * pNode1, * pNode2, * pNodeC; + Dsd_Node_t ** ppNodesDsd, * pNodeDsd, * pFaninDsd; + int i, nNodesDsd, iVar, fCompl; + + // try disjoint support decomposition + pNodeDsd = Dsd_DecomposeOne( pManDsd, pNode->pData ); + fCompl = Dsd_IsComplement( pNodeDsd ); + pNodeDsd = Dsd_Regular( pNodeDsd ); + + // determine what decomposition to use + if ( !fRecursive || Dsd_NodeReadDecsNum(pNodeDsd) != Abc_ObjFaninNum(pNode) ) + { // perform DSD + + // set the inputs + Abc_ObjForEachFanin( pNode, pFanin, i ) + { + pFaninDsd = Dsd_ManagerReadInput( pManDsd, i ); + Dsd_NodeSetMark( pFaninDsd, (int)pFanin ); + } + + // construct the intermediate nodes + ppNodesDsd = Dsd_TreeCollectNodesDfsOne( pManDsd, pNodeDsd, &nNodesDsd ); + for ( i = 0; i < nNodesDsd; i++ ) + { + pRoot = Abc_NtkDsdConstructNode( pManDsd, ppNodesDsd[i], pNode->pNtk ); + if ( Abc_NodeIsForDsd(pRoot) && fRecursive ) + Vec_PtrPush( vNodes, pRoot ); + } + free( ppNodesDsd ); + + // remove the current fanins + Abc_ObjRemoveFanins( pNode ); + // add fanin to the root + Abc_ObjAddFanin( pNode, pRoot ); + // update the function to be that of buffer + Cudd_RecursiveDeref( dd, pNode->pData ); + pNode->pData = Cudd_NotCond( dd->vars[0], fCompl ); Cudd_Ref( pNode->pData ); + } + else // perform MUX-decomposition + { + // get the cofactoring variable + iVar = Abc_NodeFindMuxVar( dd, pNode->pData, Abc_ObjFaninNum(pNode) ); + pNodeC = Abc_ObjFanin( pNode, iVar ); + + // get the negative cofactor + pNode1 = Abc_NodeClone( pNode ); + pNode1->pData = Cudd_Cofactor( dd, pNode->pData, Cudd_Not(dd->vars[iVar]) ); Cudd_Ref( pNode1->pData ); + Abc_NodeMinimumBase( pNode1 ); + if ( Abc_NodeIsForDsd(pNode1) ) + Vec_PtrPush( vNodes, pNode1 ); + + // get the positive cofactor + pNode2 = Abc_NodeClone( pNode ); + pNode2->pData = Cudd_Cofactor( dd, pNode->pData, dd->vars[iVar] ); Cudd_Ref( pNode2->pData ); + Abc_NodeMinimumBase( pNode2 ); + if ( Abc_NodeIsForDsd(pNode2) ) + Vec_PtrPush( vNodes, pNode2 ); + + // remove the current fanins + Abc_ObjRemoveFanins( pNode ); + // add new fanins + Abc_ObjAddFanin( pNode, pNodeC ); + Abc_ObjAddFanin( pNode, pNode2 ); + Abc_ObjAddFanin( pNode, pNode1 ); + // update the function to be that of MUX + Cudd_RecursiveDeref( dd, pNode->pData ); + pNode->pData = Cudd_bddIte( dd, dd->vars[0], dd->vars[1], dd->vars[2] ); Cudd_Ref( pNode->pData ); + } +} + +/**Function************************************************************* + + Synopsis [Performs decomposition of one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +bool Abc_NodeIsForDsd( Abc_Obj_t * pNode ) +{ + DdManager * dd = pNode->pNtk->pManFunc; + DdNode * bFunc, * bFunc0, * bFunc1; + assert( Abc_ObjIsNode(pNode) ); +// if ( Cudd_DagSize(pNode->pData)-1 > Abc_ObjFaninNum(pNode) ) +// return 1; +// return 0; + + for ( bFunc = Cudd_Regular(pNode->pData); !cuddIsConstant(bFunc); ) + { + bFunc0 = Cudd_Regular( cuddE(bFunc) ); + bFunc1 = cuddT(bFunc); + if ( bFunc0 == b1 ) + bFunc = bFunc1; + else if ( bFunc1 == b1 || bFunc0 == bFunc1 ) + bFunc = bFunc0; + else + return 1; + } + return 0; +} + +/**Function************************************************************* + + Synopsis [Determines a cofactoring variable.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeFindMuxVar( DdManager * dd, DdNode * bFunc, int nVars ) +{ + DdNode * bVar, * bCof0, * bCof1; + int SuppSumMin = 1000000; + int i, nSSD, nSSQ, iVar; + +// printf( "\n\nCofactors:\n\n" ); + iVar = -1; + for ( i = 0; i < nVars; i++ ) + { + bVar = dd->vars[i]; + + bCof0 = Cudd_Cofactor( dd, bFunc, Cudd_Not(bVar) ); Cudd_Ref( bCof0 ); + bCof1 = Cudd_Cofactor( dd, bFunc, bVar ); Cudd_Ref( bCof1 ); + +// nodD = Cudd_DagSize(bCof0); +// nodQ = Cudd_DagSize(bCof1); +// printf( "+%02d: D=%2d. Q=%2d. ", i, nodD, nodQ ); +// printf( "S=%2d. D=%2d. ", nodD + nodQ, abs(nodD-nodQ) ); + + nSSD = Cudd_SupportSize( dd, bCof0 ); + nSSQ = Cudd_SupportSize( dd, bCof1 ); + +// printf( "SD=%2d. SQ=%2d. ", nSSD, nSSQ ); +// printf( "S=%2d. D=%2d. ", nSSD + nSSQ, abs(nSSD - nSSQ) ); +// printf( "Cost=%3d. ", Cost(nodD,nodQ,nSSD,nSSQ) ); +// printf( "\n" ); + + Cudd_RecursiveDeref( dd, bCof0 ); + Cudd_RecursiveDeref( dd, bCof1 ); + + if ( SuppSumMin > nSSD + nSSQ ) + { + SuppSumMin = nSSD + nSSQ; + iVar = i; + } + } + return iVar; +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcFpga.c b/src/base/abci/abcFpga.c new file mode 100644 index 00000000..f30325c0 --- /dev/null +++ b/src/base/abci/abcFpga.c @@ -0,0 +1,267 @@ +/**CFile**************************************************************** + + FileName [abcFpga.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Interface with the FPGA mapping package.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcFpga.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "fpgaInt.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static Fpga_Man_t * Abc_NtkToFpga( Abc_Ntk_t * pNtk, int fRecovery, float * pSwitching, int fVerbose ); +static Abc_Ntk_t * Abc_NtkFromFpga( Fpga_Man_t * pMan, Abc_Ntk_t * pNtk ); +static Abc_Obj_t * Abc_NodeFromFpga_rec( Abc_Ntk_t * pNtkNew, Fpga_Node_t * pNodeFpga ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Interface with the FPGA mapping package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFpga( Abc_Ntk_t * pNtk, int fRecovery, int fSwitching, int fVerbose ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + Fpga_Man_t * pMan; + Vec_Int_t * vSwitching; + float * pSwitching = NULL; + int fShowSwitching = 0; + + assert( Abc_NtkIsStrash(pNtk) ); + + // print a warning about choice nodes + if ( Abc_NtkGetChoiceNum( pNtk ) ) + printf( "Performing FPGA mapping with choices.\n" ); + + // compute switching activity + fShowSwitching |= fSwitching; + if ( fShowSwitching ) + { + extern Vec_Int_t * Sim_NtkComputeSwitching( Abc_Ntk_t * pNtk, int nPatterns ); + vSwitching = Sim_NtkComputeSwitching( pNtk, 4096 ); + pSwitching = (float *)vSwitching->pArray; + } + + // perform FPGA mapping + pMan = Abc_NtkToFpga( pNtk, fRecovery, pSwitching, fVerbose ); + if ( pSwitching ) Vec_IntFree( vSwitching ); + if ( pMan == NULL ) + return NULL; + Fpga_ManSetSwitching( pMan, fSwitching ); + if ( !Fpga_Mapping( pMan ) ) + { + Fpga_ManFree( pMan ); + return NULL; + } + + // transform the result of mapping into a BDD network + pNtkNew = Abc_NtkFromFpga( pMan, pNtk ); + if ( pNtkNew == NULL ) + return NULL; + Fpga_ManFree( pMan ); + + // make the network minimum base + Abc_NtkMinimumBase( pNtkNew ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkFpga: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Load the network into FPGA manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Fpga_Man_t * Abc_NtkToFpga( Abc_Ntk_t * pNtk, int fRecovery, float * pSwitching, int fVerbose ) +{ + Fpga_Man_t * pMan; + ProgressBar * pProgress; + Fpga_Node_t * pNodeFpga; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode, * pFanin, * pPrev; + int i; + + assert( Abc_NtkIsStrash(pNtk) ); + + // start the mapping manager and set its parameters + pMan = Fpga_ManCreate( Abc_NtkCiNum(pNtk), Abc_NtkCoNum(pNtk), fVerbose ); + if ( pMan == NULL ) + return NULL; + Fpga_ManSetAreaRecovery( pMan, fRecovery ); + Fpga_ManSetOutputNames( pMan, Abc_NtkCollectCioNames(pNtk, 1) ); + Fpga_ManSetInputArrivals( pMan, Abc_NtkGetCiArrivalFloats(pNtk) ); + + // create PIs and remember them in the old nodes + Abc_NtkCleanCopy( pNtk ); + Abc_NtkForEachCi( pNtk, pNode, i ) + { + pNodeFpga = Fpga_ManReadInputs(pMan)[i]; + pNode->pCopy = (Abc_Obj_t *)pNodeFpga; + if ( pSwitching ) + Fpga_NodeSetSwitching( pNodeFpga, pSwitching[pNode->Id] ); + } + + // load the AIG into the mapper + vNodes = Abc_AigDfs( pNtk, 0, 0 ); + pProgress = Extra_ProgressBarStart( stdout, vNodes->nSize ); + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // consider the case of a constant + if ( Abc_NodeIsConst(pNode) ) + { + Abc_AigConst1(pNtk->pManFunc)->pCopy = (Abc_Obj_t *)Fpga_ManReadConst1(pMan); + continue; + } + // add the node to the mapper + pNodeFpga = Fpga_NodeAnd( pMan, + Fpga_NotCond( Abc_ObjFanin0(pNode)->pCopy, Abc_ObjFaninC0(pNode) ), + Fpga_NotCond( Abc_ObjFanin1(pNode)->pCopy, Abc_ObjFaninC1(pNode) ) ); + assert( pNode->pCopy == NULL ); + // remember the node + pNode->pCopy = (Abc_Obj_t *)pNodeFpga; + if ( pSwitching ) + Fpga_NodeSetSwitching( pNodeFpga, pSwitching[pNode->Id] ); + // set up the choice node + if ( Abc_NodeIsAigChoice( pNode ) ) + for ( pPrev = pNode, pFanin = pNode->pData; pFanin; pPrev = pFanin, pFanin = pFanin->pData ) + { + Fpga_NodeSetNextE( (Fpga_Node_t *)pPrev->pCopy, (Fpga_Node_t *)pFanin->pCopy ); + Fpga_NodeSetRepr( (Fpga_Node_t *)pFanin->pCopy, (Fpga_Node_t *)pNode->pCopy ); + } + } + Extra_ProgressBarStop( pProgress ); + Vec_PtrFree( vNodes ); + + // set the primary outputs without copying the phase + Abc_NtkForEachCo( pNtk, pNode, i ) + Fpga_ManReadOutputs(pMan)[i] = (Fpga_Node_t *)Abc_ObjFanin0(pNode)->pCopy; + return pMan; +} + +/**Function************************************************************* + + Synopsis [Creates the mapped network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFromFpga( Fpga_Man_t * pMan, Abc_Ntk_t * pNtk ) +{ + ProgressBar * pProgress; + Abc_Ntk_t * pNtkNew; + Abc_Obj_t * pNode, * pNodeNew; + int i, nDupGates; + // create the new network + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_LOGIC, ABC_FUNC_BDD ); + // make the mapper point to the new network + Fpga_CutsCleanSign( pMan ); + Fpga_ManCleanData0( pMan ); + Abc_NtkForEachCi( pNtk, pNode, i ) + Fpga_NodeSetData0( Fpga_ManReadInputs(pMan)[i], (char *)pNode->pCopy ); + // set the constant node + if ( Abc_ObjFanoutNum( Abc_AigConst1(pNtk->pManFunc) ) > 0 ) + Fpga_NodeSetData0( Fpga_ManReadConst1(pMan), (char *)Abc_NodeCreateConst1(pNtkNew) ); + // process the nodes in topological order + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCoNum(pNtk) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + pNodeNew = Abc_NodeFromFpga_rec( pNtkNew, Fpga_ManReadOutputs(pMan)[i] ); + assert( !Abc_ObjIsComplement(pNodeNew) ); + Abc_ObjFanin0(pNode)->pCopy = pNodeNew; + } + Extra_ProgressBarStop( pProgress ); + // finalize the new network + Abc_NtkFinalize( pNtk, pNtkNew ); + // decouple the PO driver nodes to reduce the number of levels + nDupGates = Abc_NtkLogicMakeSimpleCos( pNtkNew, 1 ); +// if ( nDupGates && Fpga_ManReadVerbose(pMan) ) +// printf( "Duplicated %d gates to decouple the CO drivers.\n", nDupGates ); + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Derive one node after FPGA mapping.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFromFpga_rec( Abc_Ntk_t * pNtkNew, Fpga_Node_t * pNodeFpga ) +{ + Fpga_Cut_t * pCutBest; + Fpga_Node_t ** ppLeaves; + Abc_Obj_t * pNodeNew; + int i, nLeaves; + assert( !Fpga_IsComplement(pNodeFpga) ); + // return if the result if known + pNodeNew = (Abc_Obj_t *)Fpga_NodeReadData0( pNodeFpga ); + if ( pNodeNew ) + return pNodeNew; + assert( Fpga_NodeIsAnd(pNodeFpga) ); + // get the parameters of the best cut + pCutBest = Fpga_NodeReadCutBest( pNodeFpga ); + ppLeaves = Fpga_CutReadLeaves( pCutBest ); + nLeaves = Fpga_CutReadLeavesNum( pCutBest ); + // create a new node + pNodeNew = Abc_NtkCreateNode( pNtkNew ); + for ( i = 0; i < nLeaves; i++ ) + Abc_ObjAddFanin( pNodeNew, Abc_NodeFromFpga_rec(pNtkNew, ppLeaves[i]) ); + // derive the function of this node + pNodeNew->pData = Fpga_TruthsCutBdd( pNtkNew->pManFunc, pCutBest ); Cudd_Ref( pNodeNew->pData ); + Fpga_NodeSetData0( pNodeFpga, (char *)pNodeNew ); + return pNodeNew; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcFraig.c b/src/base/abci/abcFraig.c new file mode 100644 index 00000000..fbe676a3 --- /dev/null +++ b/src/base/abci/abcFraig.c @@ -0,0 +1,586 @@ +/**CFile**************************************************************** + + FileName [abcFraig.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Procedures interfacing with the FRAIG package.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcFraig.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "fraig.h" +#include "main.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +extern Fraig_Man_t * Abc_NtkToFraig( Abc_Ntk_t * pNtk, Fraig_Params_t * pParams, int fAllNodes ); +static Abc_Ntk_t * Abc_NtkFromFraig( Fraig_Man_t * pMan, Abc_Ntk_t * pNtk ); +static Abc_Obj_t * Abc_NodeFromFraig_rec( Abc_Ntk_t * pNtkNew, Fraig_Node_t * pNodeFraig ); + +static int Abc_NtkFraigTrustCheck( Abc_Ntk_t * pNtk ); +static void Abc_NtkFraigTrustOne( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ); +static Abc_Obj_t * Abc_NodeFraigTrust( Abc_Aig_t * pMan, Abc_Obj_t * pNode ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Interfaces the network with the FRAIG package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFraig( Abc_Ntk_t * pNtk, void * pParams, int fAllNodes ) +{ + int fCheck = 1; + Fraig_Params_t * pPars = pParams; + Abc_Ntk_t * pNtkNew; + Fraig_Man_t * pMan; + // perform fraiging + pMan = Abc_NtkToFraig( pNtk, pParams, fAllNodes ); + // prove the miter if asked to + if ( pPars->fTryProve ) + Fraig_ManProveMiter( pMan ); + // reconstruct FRAIG in the new network + pNtkNew = Abc_NtkFromFraig( pMan, pNtk ); + Fraig_ManFree( pMan ); + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkFraig: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Transforms the strashed network into FRAIG.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Fraig_Man_t * Abc_NtkToFraig( Abc_Ntk_t * pNtk, Fraig_Params_t * pParams, int fAllNodes ) +{ + Fraig_Man_t * pMan; + ProgressBar * pProgress; + Fraig_Node_t * pNodeFraig; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode, * pConst1, * pReset; + int i; + + assert( Abc_NtkIsStrash(pNtk) ); + + // create the FRAIG manager + pMan = Fraig_ManCreate( pParams ); + + // create PIs and remember them in the old nodes + Abc_NtkCleanCopy( pNtk ); + Abc_NtkForEachCi( pNtk, pNode, i ) + pNode->pCopy = (Abc_Obj_t *)Fraig_ManReadIthVar(pMan, i); + pConst1 = Abc_AigConst1( pNtk->pManFunc ); + pReset = Abc_AigReset( pNtk->pManFunc ); + + // perform strashing + vNodes = Abc_AigDfs( pNtk, fAllNodes, 0 ); + if ( !pParams->fInternal ) + pProgress = Extra_ProgressBarStart( stdout, vNodes->nSize ); + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + if ( !pParams->fInternal ) + Extra_ProgressBarUpdate( pProgress, i, NULL ); + if ( pNode == pConst1 ) + pNodeFraig = Fraig_ManReadConst1(pMan); + else if ( pNode == pReset ) + continue; + else + pNodeFraig = Fraig_NodeAnd( pMan, + Fraig_NotCond( Abc_ObjFanin0(pNode)->pCopy, Abc_ObjFaninC0(pNode) ), + Fraig_NotCond( Abc_ObjFanin1(pNode)->pCopy, Abc_ObjFaninC1(pNode) ) ); + assert( pNode->pCopy == NULL ); + pNode->pCopy = (Abc_Obj_t *)pNodeFraig; + } + if ( !pParams->fInternal ) + Extra_ProgressBarStop( pProgress ); + Vec_PtrFree( vNodes ); + + // set the primary outputs + Abc_NtkForEachCo( pNtk, pNode, i ) + Fraig_ManSetPo( pMan, (Fraig_Node_t *)Abc_ObjNotCond( Abc_ObjFanin0(pNode)->pCopy, Abc_ObjFaninC0(pNode) ) ); + return pMan; +} + +/**Function************************************************************* + + Synopsis [Transforms FRAIG into what looks like a strashed network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFromFraig( Fraig_Man_t * pMan, Abc_Ntk_t * pNtk ) +{ + ProgressBar * pProgress; + Abc_Ntk_t * pNtkNew; + Abc_Obj_t * pNode, * pNodeNew; + int i; + // create the new network + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_STRASH, ABC_FUNC_AIG ); + // make the mapper point to the new network + Abc_NtkForEachCi( pNtk, pNode, i ) + Fraig_NodeSetData1( Fraig_ManReadIthVar(pMan, i), (Fraig_Node_t *)pNode->pCopy ); + // set the constant node + Fraig_NodeSetData1( Fraig_ManReadConst1(pMan), (Fraig_Node_t *)Abc_AigConst1(pNtkNew->pManFunc) ); + // process the nodes in topological order + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCoNum(pNtk) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + pNodeNew = Abc_NodeFromFraig_rec( pNtkNew, Fraig_ManReadOutputs(pMan)[i] ); + Abc_ObjAddFanin( pNode->pCopy, pNodeNew ); + } + Extra_ProgressBarStop( pProgress ); + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Transforms into AIG one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFromFraig_rec( Abc_Ntk_t * pNtkNew, Fraig_Node_t * pNodeFraig ) +{ + Abc_Obj_t * pRes, * pRes0, * pRes1, * pResMin, * pResCur; + Fraig_Node_t * pNodeTemp, * pNodeFraigR = Fraig_Regular(pNodeFraig); + void ** ppTail; + // check if the node was already considered + if ( pRes = (Abc_Obj_t *)Fraig_NodeReadData1(pNodeFraigR) ) + return Abc_ObjNotCond( pRes, Fraig_IsComplement(pNodeFraig) ); + // solve the children + pRes0 = Abc_NodeFromFraig_rec( pNtkNew, Fraig_NodeReadOne(pNodeFraigR) ); + pRes1 = Abc_NodeFromFraig_rec( pNtkNew, Fraig_NodeReadTwo(pNodeFraigR) ); + // derive the new node + pRes = Abc_AigAnd( pNtkNew->pManFunc, pRes0, pRes1 ); + pRes->fPhase = Fraig_NodeReadSimInv( pNodeFraigR ); + // if the node has an equivalence class, find its representative + if ( Fraig_NodeReadRepr(pNodeFraigR) == NULL && Fraig_NodeReadNextE(pNodeFraigR) != NULL ) + { + // go through the FRAIG nodes belonging to this equivalence class + // and find the representative node (the node with the smallest level) + pResMin = pRes; + for ( pNodeTemp = Fraig_NodeReadNextE(pNodeFraigR); pNodeTemp; pNodeTemp = Fraig_NodeReadNextE(pNodeTemp) ) + { + assert( Fraig_NodeReadData1(pNodeTemp) == NULL ); + pResCur = Abc_NodeFromFraig_rec( pNtkNew, pNodeTemp ); + if ( pResMin->Level > pResCur->Level ) + pResMin = pResCur; + } + // link the nodes in such a way that representative goes first + ppTail = &pResMin->pData; + if ( pRes != pResMin ) + { + *ppTail = pRes; + ppTail = &pRes->pData; + } + for ( pNodeTemp = Fraig_NodeReadNextE(pNodeFraigR); pNodeTemp; pNodeTemp = Fraig_NodeReadNextE(pNodeTemp) ) + { + pResCur = (Abc_Obj_t *)Fraig_NodeReadData1(pNodeTemp); + assert( pResCur ); + if ( pResMin == pResCur ) + continue; + *ppTail = pResCur; + ppTail = &pResCur->pData; + } + assert( *ppTail == NULL ); + + // update the phase of the node + pRes = Abc_ObjNotCond( pResMin, (pRes->fPhase ^ pResMin->fPhase) ); + } + Fraig_NodeSetData1( pNodeFraigR, (Fraig_Node_t *)pRes ); + return Abc_ObjNotCond( pRes, Fraig_IsComplement(pNodeFraig) ); +} + + + + +/**Function************************************************************* + + Synopsis [Interfaces the network with the FRAIG package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFraigTrust( Abc_Ntk_t * pNtk ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + + if ( !Abc_NtkIsSopLogic(pNtk) ) + { + printf( "Abc_NtkFraigTrust: Trust mode works for netlists and logic SOP networks.\n" ); + return NULL; + } + + if ( !Abc_NtkFraigTrustCheck(pNtk) ) + { + printf( "Abc_NtkFraigTrust: The network does not look like an AIG with choice nodes.\n" ); + return NULL; + } + + // perform strashing + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_STRASH, ABC_FUNC_AIG ); + Abc_NtkFraigTrustOne( pNtk, pNtkNew ); + Abc_NtkFinalize( pNtk, pNtkNew ); + + // print a warning about choice nodes + printf( "Warning: The resulting AIG contains %d choice nodes.\n", Abc_NtkGetChoiceNum( pNtkNew ) ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkFraigTrust: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Checks whether the node can be processed in the trust mode.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkFraigTrustCheck( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pNode; + int i, nFanins; + Abc_NtkForEachNode( pNtk, pNode, i ) + { + nFanins = Abc_ObjFaninNum(pNode); + if ( nFanins < 2 ) + continue; + if ( nFanins == 2 && Abc_SopIsAndType(pNode->pData) ) + continue; + if ( !Abc_SopIsOrType(pNode->pData) ) + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Interfaces the network with the FRAIG package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFraigTrustOne( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ) +{ + ProgressBar * pProgress; + Abc_Aig_t * pMan = pNtkNew->pManFunc; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode, * pNodeNew, * pObj; + int i; + + // perform strashing + vNodes = Abc_NtkDfs( pNtk, 0 ); + pProgress = Extra_ProgressBarStart( stdout, vNodes->nSize ); + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // get the node + assert( Abc_ObjIsNode(pNode) ); + // strash the node + pNodeNew = Abc_NodeFraigTrust( pMan, pNode ); + // get the old object + if ( Abc_NtkIsNetlist(pNtk) ) + pObj = Abc_ObjFanout0( pNode ); // the fanout net + else + pObj = pNode; // the node itself + // make sure the node is not yet strashed + assert( pObj->pCopy == NULL ); + // mark the old object with the new AIG node + pObj->pCopy = pNodeNew; + } + Vec_PtrFree( vNodes ); + Extra_ProgressBarStop( pProgress ); +} + +/**Function************************************************************* + + Synopsis [Transforms one node into a FRAIG in the trust mode.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFraigTrust( Abc_Aig_t * pMan, Abc_Obj_t * pNode ) +{ + Abc_Obj_t * pSum, * pFanin; + Abc_Obj_t * pConst1 = Abc_AigConst1(pMan); + void ** ppTail; + int i, nFanins, fCompl; + + assert( Abc_ObjIsNode(pNode) ); + // get the number of node's fanins + nFanins = Abc_ObjFaninNum( pNode ); + assert( nFanins == Abc_SopGetVarNum(pNode->pData) ); + // check if it is a constant + if ( nFanins == 0 ) + return Abc_ObjNotCond( pConst1, Abc_SopIsConst0(pNode->pData) ); + if ( nFanins == 1 ) + return Abc_ObjNotCond( Abc_ObjFanin0(pNode)->pCopy, Abc_SopIsInv(pNode->pData) ); + if ( nFanins == 2 && Abc_SopIsAndType(pNode->pData) ) + return Abc_AigAnd( pMan, + Abc_ObjNotCond( Abc_ObjFanin0(pNode)->pCopy, !Abc_SopGetIthCareLit(pNode->pData,0) ), + Abc_ObjNotCond( Abc_ObjFanin1(pNode)->pCopy, !Abc_SopGetIthCareLit(pNode->pData,1) ) ); + assert( Abc_SopIsOrType(pNode->pData) ); + fCompl = Abc_SopGetIthCareLit(pNode->pData,0); + // get the root of the choice node (the first fanin) + pSum = Abc_ObjFanin0(pNode)->pCopy; + // connect other fanins + ppTail = &pSum->pData; + Abc_ObjForEachFanin( pNode, pFanin, i ) + { + if ( i == 0 ) + continue; + *ppTail = pFanin->pCopy; + ppTail = &pFanin->pCopy->pData; + // set the complemented bit of this cut + if ( fCompl ^ Abc_SopGetIthCareLit(pNode->pData, i) ) + pFanin->pCopy->fPhase = 1; + } + assert( *ppTail == NULL ); + return pSum; +} + + + + +/**Function************************************************************* + + Synopsis [Interfaces the network with the FRAIG package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkFraigStore( Abc_Ntk_t * pNtk ) +{ + Abc_Frame_t * p; + Abc_Ntk_t * pStore; + int nAndsOld; + + if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) ) + { + printf( "The netlist need to be converted into a logic network before adding it to storage.\n" ); + return 0; + } + + // get the network currently stored + p = Abc_FrameGetGlobalFrame(); + pStore = Abc_FrameReadNtkStore(p); + if ( pStore == NULL ) + { + // start the stored network + pStore = Abc_NtkStrash( pNtk, 0, 0 ); + if ( pStore == NULL ) + { + printf( "Abc_NtkFraigStore: Initial strashing has failed.\n" ); + return 0; + } + // save the parameters + Abc_FrameSetNtkStore( p, pStore ); + Abc_FrameSetNtkStoreSize( p, 1 ); + nAndsOld = 0; + } + else + { + // add the new network to storage + nAndsOld = Abc_NtkNodeNum( pStore ); + if ( !Abc_NtkAppend( pStore, pNtk ) ) + { + printf( "The current network cannot be appended to the stored network.\n" ); + return 0; + } + // set the number of networks stored + Abc_FrameSetNtkStoreSize( p, Abc_FrameReadNtkStoreSize(p) + 1 ); + } + printf( "The number of AIG nodes added to storage = %5d.\n", Abc_NtkNodeNum(pStore) - nAndsOld ); + return 1; +} + +/**Function************************************************************* + + Synopsis [Interfaces the network with the FRAIG package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFraigRestore() +{ + Abc_Frame_t * p; + Fraig_Params_t Params; + Abc_Ntk_t * pStore, * pFraig; + int nWords1, nWords2, nWordsMin; + + // get the stored network + p = Abc_FrameGetGlobalFrame(); + pStore = Abc_FrameReadNtkStore(p); + Abc_FrameSetNtkStore( p, NULL ); + if ( pStore == NULL ) + { + printf( "There are no network currently in storage.\n" ); + return NULL; + } + printf( "Currently stored %d networks with %d nodes will be fraiged.\n", + Abc_FrameReadNtkStoreSize(p), Abc_NtkNodeNum(pStore) ); + + // to determine the number of simulation patterns + // use the following strategy + // at least 64 words (32 words random and 32 words dynamic) + // no more than 256M for one circuit (128M + 128M) + nWords1 = 32; + nWords2 = (1<<27) / (Abc_NtkNodeNum(pStore) + Abc_NtkCiNum(pStore)); + nWordsMin = ABC_MIN( nWords1, nWords2 ); + + // set parameters for fraiging + Fraig_ParamsSetDefault( &Params ); + Params.nPatsRand = nWordsMin * 32; // the number of words of random simulation info + Params.nPatsDyna = nWordsMin * 32; // the number of words of dynamic simulation info + Params.nBTLimit = 99; // the max number of backtracks to perform + Params.fFuncRed = 1; // performs only one level hashing + Params.fFeedBack = 1; // enables solver feedback + Params.fDist1Pats = 1; // enables distance-1 patterns + Params.fDoSparse = 1; // performs equiv tests for sparse functions + Params.fChoicing = 1; // enables recording structural choices + Params.fTryProve = 0; // tries to solve the final miter + Params.fVerbose = 0; // the verbosiness flag + +// Fraig_ManReportChoices( p ); + // transform it into FRAIG + pFraig = Abc_NtkFraig( pStore, &Params, 1 ); + if ( pFraig == NULL ) + return NULL; + Abc_NtkDelete( pStore ); + return pFraig; +} + +/**Function************************************************************* + + Synopsis [Interfaces the network with the FRAIG package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFraigStoreClean() +{ + Abc_Frame_t * p; + Abc_Ntk_t * pStore; + // get the stored network + p = Abc_FrameGetGlobalFrame(); + pStore = Abc_FrameReadNtkStore(p); + if ( pStore ) + Abc_NtkDelete( pStore ); + Abc_FrameSetNtkStore( p, NULL ); +} + +/**Function************************************************************* + + Synopsis [Checks the correctness of stored networks.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFraigStoreCheck( Abc_Ntk_t * pFraig ) +{ + Abc_Obj_t * pNode0, * pNode1; + int nPoOrig, nPoFinal, nStored; + int i, k; + // check that the PO functions are correct + nPoFinal = Abc_NtkPoNum(pFraig); + nStored = Abc_FrameReadNtkStoreSize(Abc_FrameGetGlobalFrame()); + assert( nPoFinal % nStored == 0 ); + nPoOrig = nPoFinal / nStored; + for ( i = 0; i < nPoOrig; i++ ) + { + pNode0 = Abc_ObjFanin0( Abc_NtkPo(pFraig, i) ); + for ( k = 1; k < nStored; k++ ) + { + pNode1 = Abc_ObjFanin0( Abc_NtkPo(pFraig, k*nPoOrig+i) ); + if ( pNode0 != pNode1 ) + printf( "Verification for PO #%d of network #%d has failed. The PO function is not used.\n", i+1, k+1 ); + } + } +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcFxu.c b/src/base/abci/abcFxu.c new file mode 100644 index 00000000..0c8994e1 --- /dev/null +++ b/src/base/abci/abcFxu.c @@ -0,0 +1,259 @@ +/**CFile**************************************************************** + + FileName [abcFxu.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Interface with the fast extract package.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcFxu.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "fxu.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static bool Abc_NtkFxuCheck( Abc_Ntk_t * pNtk ); +static void Abc_NtkFxuCollectInfo( Abc_Ntk_t * pNtk, Fxu_Data_t * p ); +static void Abc_NtkFxuReconstruct( Abc_Ntk_t * pNtk, Fxu_Data_t * p ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + + +/**Function************************************************************* + + Synopsis [Performs fast_extract on the current network.] + + Description [Takes the network and the maximum number of nodes to extract. + Uses the concurrent double-cube and single cube divisor extraction procedure. + Modifies the network in the end, after extracting all nodes. Note that + Ntk_NetworkSweep() may increase the performance of this procedure because + the single-literal nodes will not be created in the sparse matrix. Returns 1 + if the network has been changed.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +bool Abc_NtkFastExtract( Abc_Ntk_t * pNtk, Fxu_Data_t * p ) +{ + int fCheck = 1; + + assert( Abc_NtkIsLogic(pNtk) ); + // convert nodes to SOPs + if ( Abc_NtkIsMappedLogic(pNtk) ) + Abc_NtkUnmap(pNtk); + else if ( Abc_NtkIsBddLogic(pNtk) ) + Abc_NtkBddToSop(pNtk); + else + { // to make sure the SOPs are SCC-free +// Abc_NtkSopToBdd(pNtk); +// Abc_NtkBddToSop(pNtk); + } + // check if the network meets the requirements + if ( !Abc_NtkFxuCheck(pNtk) ) + { + printf( "Abc_NtkFastExtract: Nodes have duplicated or complemented fanins. FXU is not performed.\n" ); + return 0; + } + // sweep removes useless nodes + Abc_NtkCleanup( pNtk, 0 ); + // collect information about the covers + Abc_NtkFxuCollectInfo( pNtk, p ); + // call the fast extract procedure + if ( Fxu_FastExtract(p) > 0 ) + { + // update the network + Abc_NtkFxuReconstruct( pNtk, p ); + // make sure everything is okay + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + printf( "Abc_NtkFastExtract: The network check has failed.\n" ); + return 1; + } + else + printf( "Warning: The network has not been changed by \"fx\".\n" ); + return 0; +} + + +/**Function************************************************************* + + Synopsis [Makes sure the nodes do not have complemented and duplicated fanins.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +bool Abc_NtkFxuCheck( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pNode, * pFanin1, * pFanin2; + int n, i, k; + Abc_NtkForEachNode( pNtk, pNode, n ) + { + Abc_ObjForEachFanin( pNode, pFanin1, i ) + { + if ( Abc_ObjFaninC(pNode, i) ) + return 0; + Abc_ObjForEachFanin( pNode, pFanin2, k ) + { + if ( i == k ) + continue; + if ( pFanin1 == pFanin2 ) + return 0; + } + } + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Collect information about the network for fast_extract.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFxuCollectInfo( Abc_Ntk_t * pNtk, Fxu_Data_t * p ) +{ + Abc_Obj_t * pNode; + int i; + // add information to the manager + p->pManSop = pNtk->pManFunc; + p->vSops = Vec_PtrAlloc(0); + p->vFanins = Vec_PtrAlloc(0); + p->vSopsNew = Vec_PtrAlloc(0); + p->vFaninsNew = Vec_PtrAlloc(0); + Vec_PtrFill( p->vSops, Abc_NtkObjNumMax(pNtk), NULL ); + Vec_PtrFill( p->vFanins, Abc_NtkObjNumMax(pNtk), NULL ); + Vec_PtrFill( p->vSopsNew, Abc_NtkObjNumMax(pNtk) + p->nNodesExt, NULL ); + Vec_PtrFill( p->vFaninsNew, Abc_NtkObjNumMax(pNtk) + p->nNodesExt, NULL ); + // add SOPs and fanin array + Abc_NtkForEachNode( pNtk, pNode, i ) + { + if ( Abc_SopGetVarNum(pNode->pData) < 2 ) + continue; + if ( Abc_SopGetCubeNum(pNode->pData) < 1 ) + continue; + p->vSops->pArray[i] = pNode->pData; + p->vFanins->pArray[i] = &pNode->vFanins; + } + p->nNodesOld = Abc_NtkObjNumMax(pNtk); +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFxuFreeInfo( Fxu_Data_t * p ) +{ + int i; + // free the arrays of new fanins + if ( p->vFaninsNew ) + for ( i = 0; i < p->vFaninsNew->nSize; i++ ) + if ( p->vFaninsNew->pArray[i] ) + Vec_IntFree( p->vFaninsNew->pArray[i] ); + // free the arrays + if ( p->vSops ) Vec_PtrFree( p->vSops ); + if ( p->vSopsNew ) Vec_PtrFree( p->vSopsNew ); + if ( p->vFanins ) Vec_PtrFree( p->vFanins ); + if ( p->vFaninsNew ) Vec_PtrFree( p->vFaninsNew ); + FREE( p ); +} + +/**Function************************************************************* + + Synopsis [Recostructs the network after FX.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFxuReconstruct( Abc_Ntk_t * pNtk, Fxu_Data_t * p ) +{ + Vec_Int_t * vFanins; + Abc_Obj_t * pNode, * pFanin; + int i, k; + + assert( p->vFanins->nSize < p->vFaninsNew->nSize ); + // create the new nodes + for ( i = p->vFanins->nSize; i < p->vFanins->nSize + p->nNodesNew; i++ ) + { + // start the node + pNode = Abc_NtkCreateNode( pNtk ); + assert( i == (int)pNode->Id ); + } + // update the old nodes + for ( i = 0; i < p->vFanins->nSize; i++ ) + { + // the new array of fanins + vFanins = p->vFaninsNew->pArray[i]; + if ( vFanins == NULL ) + continue; + // remove old fanins + pNode = Abc_NtkObj( pNtk, i ); + Abc_ObjRemoveFanins( pNode ); + // add new fanins + vFanins = p->vFaninsNew->pArray[i]; + for ( k = 0; k < vFanins->nSize; k++ ) + { + pFanin = Abc_NtkObj( pNtk, vFanins->pArray[k] ); + Abc_ObjAddFanin( pNode, pFanin ); + } + pNode->pData = p->vSopsNew->pArray[i]; + assert( pNode->pData != NULL ); + } + // set up the new nodes + for ( i = p->vFanins->nSize; i < p->vFanins->nSize + p->nNodesNew; i++ ) + { + // get the new node + pNode = Abc_NtkObj( pNtk, i ); + // add the fanins + vFanins = p->vFaninsNew->pArray[i]; + for ( k = 0; k < vFanins->nSize; k++ ) + { + pFanin = Abc_NtkObj( pNtk, vFanins->pArray[k] ); + Abc_ObjAddFanin( pNode, pFanin ); + } + pNode->pData = p->vSopsNew->pArray[i]; + assert( pNode->pData != NULL ); + } +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcMap.c b/src/base/abci/abcMap.c new file mode 100644 index 00000000..45f600ed --- /dev/null +++ b/src/base/abci/abcMap.c @@ -0,0 +1,689 @@ +/**CFile**************************************************************** + + FileName [abcMap.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Interface with the SC mapping package.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcMap.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "main.h" +#include "mio.h" +#include "mapper.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static Map_Man_t * Abc_NtkToMap( Abc_Ntk_t * pNtk, double DelayTarget, int fRecovery, float * pSwitching, int fVerbose ); +static Abc_Ntk_t * Abc_NtkFromMap( Map_Man_t * pMan, Abc_Ntk_t * pNtk ); +static Abc_Obj_t * Abc_NodeFromMap_rec( Abc_Ntk_t * pNtkNew, Map_Node_t * pNodeMap, int fPhase ); +static Abc_Obj_t * Abc_NodeFromMapPhase_rec( Abc_Ntk_t * pNtkNew, Map_Node_t * pNodeMap, int fPhase ); +static Abc_Obj_t * Abc_NodeFromMapSuper_rec( Abc_Ntk_t * pNtkNew, Map_Node_t * pNodeMap, Map_Super_t * pSuper, Abc_Obj_t * pNodePis[], int nNodePis ); + +static Abc_Ntk_t * Abc_NtkFromMapSuperChoice( Map_Man_t * pMan, Abc_Ntk_t * pNtk ); +static void Abc_NodeSuperChoice( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNode ); +static void Abc_NodeFromMapCutPhase( Abc_Ntk_t * pNtkNew, Map_Cut_t * pCut, int fPhase ); +static Abc_Obj_t * Abc_NodeFromMapSuperChoice_rec( Abc_Ntk_t * pNtkNew, Map_Super_t * pSuper, Abc_Obj_t * pNodePis[], int nNodePis ); + + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Interface with the mapping package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, double DelayTarget, int fRecovery, int fSwitching, int fVerbose ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + Map_Man_t * pMan; + Vec_Int_t * vSwitching; + float * pSwitching = NULL; + int fShowSwitching = 0; + int clk; + + assert( Abc_NtkIsStrash(pNtk) ); + + // check that the library is available + if ( Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) == NULL ) + { + printf( "The current library is not available.\n" ); + return 0; + } + + // derive the supergate library + if ( Abc_FrameReadLibSuper(Abc_FrameGetGlobalFrame()) == NULL && Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) ) + { + printf( "A simple supergate library is derived from gate library \"%s\".\n", + Mio_LibraryReadName(Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame())) ); + Map_SuperLibDeriveFromGenlib( Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) ); + } + + // print a warning about choice nodes + if ( Abc_NtkGetChoiceNum( pNtk ) ) + printf( "Performing mapping with choices.\n" ); + + // compute switching activity + fShowSwitching |= fSwitching; + if ( fShowSwitching ) + { + extern Vec_Int_t * Sim_NtkComputeSwitching( Abc_Ntk_t * pNtk, int nPatterns ); + vSwitching = Sim_NtkComputeSwitching( pNtk, 4096 ); + pSwitching = (float *)vSwitching->pArray; + } + + // perform the mapping + pMan = Abc_NtkToMap( pNtk, DelayTarget, fRecovery, pSwitching, fVerbose ); + if ( pSwitching ) Vec_IntFree( vSwitching ); + if ( pMan == NULL ) + return NULL; +clk = clock(); + Map_ManSetSwitching( pMan, fSwitching ); + if ( !Map_Mapping( pMan ) ) + { + Map_ManFree( pMan ); + return NULL; + } + Map_ManPrintStatsToFile( pNtk->pSpec, Map_ManReadAreaFinal(pMan), Map_ManReadRequiredGlo(pMan), clock()-clk ); + + // reconstruct the network after mapping + pNtkNew = Abc_NtkFromMap( pMan, pNtk ); + if ( pNtkNew == NULL ) + return NULL; + Map_ManFree( pMan ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkMap: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Load the network into manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Map_Man_t * Abc_NtkToMap( Abc_Ntk_t * pNtk, double DelayTarget, int fRecovery, float * pSwitching, int fVerbose ) +{ + Map_Man_t * pMan; + ProgressBar * pProgress; + Map_Node_t * pNodeMap; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode, * pFanin, * pPrev; + int i; + + assert( Abc_NtkIsStrash(pNtk) ); + + // start the mapping manager and set its parameters + pMan = Map_ManCreate( Abc_NtkPiNum(pNtk) + Abc_NtkLatchNum(pNtk), Abc_NtkPoNum(pNtk) + Abc_NtkLatchNum(pNtk), fVerbose ); + if ( pMan == NULL ) + return NULL; + Map_ManSetAreaRecovery( pMan, fRecovery ); + Map_ManSetOutputNames( pMan, Abc_NtkCollectCioNames(pNtk, 1) ); + Map_ManSetDelayTarget( pMan, (float)DelayTarget ); + Map_ManSetInputArrivals( pMan, (Map_Time_t *)Abc_NtkGetCiArrivalTimes(pNtk) ); + + // create PIs and remember them in the old nodes + Abc_NtkCleanCopy( pNtk ); + Abc_NtkForEachCi( pNtk, pNode, i ) + { + pNodeMap = Map_ManReadInputs(pMan)[i]; + pNode->pCopy = (Abc_Obj_t *)pNodeMap; + if ( pSwitching ) + Map_NodeSetSwitching( pNodeMap, pSwitching[pNode->Id] ); + } + + // load the AIG into the mapper + vNodes = Abc_AigDfs( pNtk, 0, 0 ); + pProgress = Extra_ProgressBarStart( stdout, vNodes->nSize ); + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // consider the case of a constant + if ( Abc_NodeIsConst(pNode) ) + { + Abc_AigConst1(pNtk->pManFunc)->pCopy = (Abc_Obj_t *)Map_ManReadConst1(pMan); + continue; + } + // add the node to the mapper + pNodeMap = Map_NodeAnd( pMan, + Map_NotCond( Abc_ObjFanin0(pNode)->pCopy, Abc_ObjFaninC0(pNode) ), + Map_NotCond( Abc_ObjFanin1(pNode)->pCopy, Abc_ObjFaninC1(pNode) ) ); + assert( pNode->pCopy == NULL ); + // remember the node + pNode->pCopy = (Abc_Obj_t *)pNodeMap; + if ( pSwitching ) + Map_NodeSetSwitching( pNodeMap, pSwitching[pNode->Id] ); + // set up the choice node + if ( Abc_NodeIsAigChoice( pNode ) ) + for ( pPrev = pNode, pFanin = pNode->pData; pFanin; pPrev = pFanin, pFanin = pFanin->pData ) + { + Map_NodeSetNextE( (Map_Node_t *)pPrev->pCopy, (Map_Node_t *)pFanin->pCopy ); + Map_NodeSetRepr( (Map_Node_t *)pFanin->pCopy, (Map_Node_t *)pNode->pCopy ); + } + } + Extra_ProgressBarStop( pProgress ); + Vec_PtrFree( vNodes ); + + // set the primary outputs in the required phase + Abc_NtkForEachCo( pNtk, pNode, i ) + Map_ManReadOutputs(pMan)[i] = Map_NotCond( (Map_Node_t *)Abc_ObjFanin0(pNode)->pCopy, Abc_ObjFaninC0(pNode) ); + return pMan; +} + +/**Function************************************************************* + + Synopsis [Creates the mapped network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFromMap( Map_Man_t * pMan, Abc_Ntk_t * pNtk ) +{ + ProgressBar * pProgress; + Abc_Ntk_t * pNtkNew; + Map_Node_t * pNodeMap; + Abc_Obj_t * pNode, * pNodeNew; + int i, nDupGates; + + // create the new network + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_LOGIC, ABC_FUNC_MAP ); + // make the mapper point to the new network + Map_ManCleanData( pMan ); + Abc_NtkForEachCi( pNtk, pNode, i ) + Map_NodeSetData( Map_ManReadInputs(pMan)[i], 1, (char *)pNode->pCopy ); + // set the constant node + if ( Abc_ObjFanoutNum( Abc_AigConst1(pNtk->pManFunc) ) > 0 ) + Map_NodeSetData( Map_ManReadConst1(pMan), 1, (char *)Abc_NodeCreateConst1(pNtkNew) ); + + // assign the mapping of the required phase to the POs + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCoNum(pNtk) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + pNodeMap = Map_ManReadOutputs(pMan)[i]; + pNodeNew = Abc_NodeFromMap_rec( pNtkNew, Map_Regular(pNodeMap), !Map_IsComplement(pNodeMap) ); + assert( !Abc_ObjIsComplement(pNodeNew) ); + Abc_ObjAddFanin( pNode->pCopy, pNodeNew ); + } + Extra_ProgressBarStop( pProgress ); + // decouple the PO driver nodes to reduce the number of levels + nDupGates = Abc_NtkLogicMakeSimpleCos( pNtkNew, 1 ); +// if ( nDupGates && Map_ManReadVerbose(pMan) ) +// printf( "Duplicated %d gates to decouple the CO drivers.\n", nDupGates ); + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Constructs the nodes corrresponding to one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFromMap_rec( Abc_Ntk_t * pNtkNew, Map_Node_t * pNodeMap, int fPhase ) +{ + Abc_Obj_t * pNodeNew, * pNodeInv; + + // check if the phase is already implemented + pNodeNew = (Abc_Obj_t *)Map_NodeReadData( pNodeMap, fPhase ); + if ( pNodeNew ) + return pNodeNew; + + // implement the node if the best cut is assigned + if ( Map_NodeReadCutBest(pNodeMap, fPhase) != NULL ) + return Abc_NodeFromMapPhase_rec( pNtkNew, pNodeMap, fPhase ); + + // if the cut is not assigned, implement the node + assert( Map_NodeReadCutBest(pNodeMap, !fPhase) != NULL || Map_NodeIsConst(pNodeMap) ); + pNodeNew = Abc_NodeFromMapPhase_rec( pNtkNew, pNodeMap, !fPhase ); + + // add the inverter + pNodeInv = Abc_NtkCreateNode( pNtkNew ); + Abc_ObjAddFanin( pNodeInv, pNodeNew ); + pNodeInv->pData = Mio_LibraryReadInv(Map_ManReadGenLib(Map_NodeReadMan(pNodeMap))); + + // set the inverter + Map_NodeSetData( pNodeMap, fPhase, (char *)pNodeInv ); + return pNodeInv; +} + +/**Function************************************************************* + + Synopsis [Constructs the nodes corrresponding to one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFromMapPhase_rec( Abc_Ntk_t * pNtkNew, Map_Node_t * pNodeMap, int fPhase ) +{ + Abc_Obj_t * pNodePIs[10]; + Abc_Obj_t * pNodeNew; + Map_Node_t ** ppLeaves; + Map_Cut_t * pCutBest; + Map_Super_t * pSuperBest; + unsigned uPhaseBest; + int i, fInvPin, nLeaves; + + // make sure the node can be implemented in this phase + assert( Map_NodeReadCutBest(pNodeMap, fPhase) != NULL || Map_NodeIsConst(pNodeMap) ); + // check if the phase is already implemented + pNodeNew = (Abc_Obj_t *)Map_NodeReadData( pNodeMap, fPhase ); + if ( pNodeNew ) + return pNodeNew; + + // get the information about the best cut + pCutBest = Map_NodeReadCutBest( pNodeMap, fPhase ); + pSuperBest = Map_CutReadSuperBest( pCutBest, fPhase ); + uPhaseBest = Map_CutReadPhaseBest( pCutBest, fPhase ); + nLeaves = Map_CutReadLeavesNum( pCutBest ); + ppLeaves = Map_CutReadLeaves( pCutBest ); + + // collect the PI nodes + for ( i = 0; i < nLeaves; i++ ) + { + fInvPin = ((uPhaseBest & (1 << i)) > 0); + pNodePIs[i] = Abc_NodeFromMap_rec( pNtkNew, ppLeaves[i], !fInvPin ); + assert( pNodePIs[i] != NULL ); + } + + // implement the supergate + pNodeNew = Abc_NodeFromMapSuper_rec( pNtkNew, pNodeMap, pSuperBest, pNodePIs, nLeaves ); + Map_NodeSetData( pNodeMap, fPhase, (char *)pNodeNew ); + return pNodeNew; +} + +/**Function************************************************************* + + Synopsis [Constructs the nodes corrresponding to one supergate.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFromMapSuper_rec( Abc_Ntk_t * pNtkNew, Map_Node_t * pNodeMap, Map_Super_t * pSuper, Abc_Obj_t * pNodePis[], int nNodePis ) +{ + Mio_Gate_t * pRoot; + Map_Super_t ** ppFanins; + Abc_Obj_t * pNodeNew, * pNodeFanin; + int nFanins, Number, i; + + // get the parameters of the supergate + pRoot = Map_SuperReadRoot(pSuper); + if ( pRoot == NULL ) + { + Number = Map_SuperReadNum(pSuper); + if ( Number < nNodePis ) + { + return pNodePis[Number]; + } + else + { +// assert( 0 ); + /* It might happen that a super gate with 5 inputs is constructed that + * actually depends only on the first four variables; i.e the fifth is a + * don't care -- in that case we connect constant node for the fifth + * (since the cut only has 4 variables). An interesting question is what + * if the first variable (and not the fifth one is the redundant one; + * can that happen?) */ + return Abc_NodeCreateConst0(pNtkNew); + } + } + + // get information about the fanins of the supergate + nFanins = Map_SuperReadFaninNum( pSuper ); + ppFanins = Map_SuperReadFanins( pSuper ); + // create a new node with these fanins + pNodeNew = Abc_NtkCreateNode( pNtkNew ); + for ( i = 0; i < nFanins; i++ ) + { + pNodeFanin = Abc_NodeFromMapSuper_rec( pNtkNew, pNodeMap, ppFanins[i], pNodePis, nNodePis ); + Abc_ObjAddFanin( pNodeNew, pNodeFanin ); + } + pNodeNew->pData = pRoot; + return pNodeNew; +} + + +/**Function************************************************************* + + Synopsis [Unmaps the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkUnmap( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pNode; + char * pSop; + int i; + + assert( Abc_NtkIsMappedLogic(pNtk) ); + // update the functionality manager + assert( pNtk->pManFunc == Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) ); + pNtk->pManFunc = Extra_MmFlexStart(); + pNtk->ntkFunc = ABC_FUNC_SOP; + // update the nodes + Abc_NtkForEachNode( pNtk, pNode, i ) + { + pSop = Mio_GateReadSop(pNode->pData); + assert( Abc_SopGetVarNum(pSop) == Abc_ObjFaninNum(pNode) ); + pNode->pData = Abc_SopRegister( pNtk->pManFunc, pSop ); + } + return 1; +} + + + + +/**Function************************************************************* + + Synopsis [Interface with the mapping package.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkSuperChoice( Abc_Ntk_t * pNtk ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + + Map_Man_t * pMan; + + assert( Abc_NtkIsStrash(pNtk) ); + + // check that the library is available + if ( Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) == NULL ) + { + printf( "The current library is not available.\n" ); + return 0; + } + + // derive the supergate library + if ( Abc_FrameReadLibSuper(Abc_FrameGetGlobalFrame()) == NULL && Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) ) + { + printf( "A simple supergate library is derived from gate library \"%s\".\n", + Mio_LibraryReadName(Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame())) ); + Map_SuperLibDeriveFromGenlib( Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame()) ); + } + + // print a warning about choice nodes + if ( Abc_NtkGetChoiceNum( pNtk ) ) + printf( "Performing mapping with choices.\n" ); + + // perform the mapping + pMan = Abc_NtkToMap( pNtk, -1, 1, NULL, 0 ); + if ( pMan == NULL ) + return NULL; + if ( !Map_Mapping( pMan ) ) + { + Map_ManFree( pMan ); + return NULL; + } + + // reconstruct the network after mapping + pNtkNew = Abc_NtkFromMapSuperChoice( pMan, pNtk ); + if ( pNtkNew == NULL ) + return NULL; + Map_ManFree( pMan ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkMap: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + + +/**Function************************************************************* + + Synopsis [Creates the mapped network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFromMapSuperChoice( Map_Man_t * pMan, Abc_Ntk_t * pNtk ) +{ + ProgressBar * pProgress; + Abc_Ntk_t * pNtkNew, * pNtkNew2; + Abc_Obj_t * pNode; + int i; + + // save the pointer to the mapped nodes + Abc_NtkForEachCi( pNtk, pNode, i ) + pNode->pNext = pNode->pCopy; + Abc_NtkForEachPo( pNtk, pNode, i ) + pNode->pNext = pNode->pCopy; + Abc_NtkForEachNode( pNtk, pNode, i ) + pNode->pNext = pNode->pCopy; + + // duplicate the network + pNtkNew2 = Abc_NtkDup( pNtk ); + pNtkNew = Abc_NtkRenode( pNtkNew2, 0, 20, 0, 0, 1 ); + Abc_NtkBddToSop( pNtkNew ); + + // set the old network to point to the new network + Abc_NtkForEachCi( pNtk, pNode, i ) + pNode->pCopy = pNode->pCopy->pCopy; + Abc_NtkForEachPo( pNtk, pNode, i ) + pNode->pCopy = pNode->pCopy->pCopy; + Abc_NtkForEachNode( pNtk, pNode, i ) + pNode->pCopy = pNode->pCopy->pCopy; + Abc_NtkDelete( pNtkNew2 ); + + // set the pointers from the mapper to the new nodes + Abc_NtkForEachCi( pNtk, pNode, i ) + { + Map_NodeSetData( Map_ManReadInputs(pMan)[i], 0, (char *)Abc_NodeCreateInv(pNtkNew,pNode->pCopy) ); + Map_NodeSetData( Map_ManReadInputs(pMan)[i], 1, (char *)pNode->pCopy ); + } + Abc_NtkForEachNode( pNtk, pNode, i ) + { + if ( Abc_NodeIsConst(pNode) ) + continue; + Map_NodeSetData( (Map_Node_t *)pNode->pNext, 0, (char *)Abc_NodeCreateInv(pNtkNew,pNode->pCopy) ); + Map_NodeSetData( (Map_Node_t *)pNode->pNext, 1, (char *)pNode->pCopy ); + } + + // assign the mapping of the required phase to the POs + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkObjNumMax(pNtk) ); + Abc_NtkForEachNode( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + if ( Abc_NodeIsConst(pNode) ) + continue; + Abc_NodeSuperChoice( pNtkNew, pNode ); + } + Extra_ProgressBarStop( pProgress ); + return pNtkNew; +} + + +/**Function************************************************************* + + Synopsis [Creates the mapped network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeSuperChoice( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNode ) +{ + Map_Node_t * pMapNode = (Map_Node_t *)pNode->pNext; + Map_Cut_t * pCuts, * pTemp; + + pCuts = Map_NodeReadCuts(pMapNode); + for ( pTemp = Map_CutReadNext(pCuts); pTemp; pTemp = Map_CutReadNext(pTemp) ) + { + Abc_NodeFromMapCutPhase( pNtkNew, pTemp, 0 ); + Abc_NodeFromMapCutPhase( pNtkNew, pTemp, 1 ); + } +} + + +/**Function************************************************************* + + Synopsis [Constructs the nodes corrresponding to one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeFromMapCutPhase( Abc_Ntk_t * pNtkNew, Map_Cut_t * pCut, int fPhase ) +{ + Abc_Obj_t * pNodePIs[10]; + Map_Node_t ** ppLeaves; + Map_Super_t * pSuperBest; + unsigned uPhaseBest; + int i, fInvPin, nLeaves; + + pSuperBest = Map_CutReadSuperBest( pCut, fPhase ); + if ( pSuperBest == NULL ) + return; + + // get the information about the best cut + uPhaseBest = Map_CutReadPhaseBest( pCut, fPhase ); + nLeaves = Map_CutReadLeavesNum( pCut ); + ppLeaves = Map_CutReadLeaves( pCut ); + + // collect the PI nodes + for ( i = 0; i < nLeaves; i++ ) + { + fInvPin = ((uPhaseBest & (1 << i)) > 0); + pNodePIs[i] = (Abc_Obj_t *)Map_NodeReadData( ppLeaves[i], !fInvPin ); + assert( pNodePIs[i] != NULL ); + } + + // implement the supergate + Abc_NodeFromMapSuperChoice_rec( pNtkNew, pSuperBest, pNodePIs, nLeaves ); +} + + +/**Function************************************************************* + + Synopsis [Constructs the nodes corrresponding to one supergate.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeFromMapSuperChoice_rec( Abc_Ntk_t * pNtkNew, Map_Super_t * pSuper, Abc_Obj_t * pNodePis[], int nNodePis ) +{ + Mio_Gate_t * pRoot; + Map_Super_t ** ppFanins; + Abc_Obj_t * pNodeNew, * pNodeFanin; + int nFanins, Number, i; + + // get the parameters of the supergate + pRoot = Map_SuperReadRoot(pSuper); + if ( pRoot == NULL ) + { + Number = Map_SuperReadNum(pSuper); + if ( Number < nNodePis ) + { + return pNodePis[Number]; + } + else + { +// assert( 0 ); + /* It might happen that a super gate with 5 inputs is constructed that + * actually depends only on the first four variables; i.e the fifth is a + * don't care -- in that case we connect constant node for the fifth + * (since the cut only has 4 variables). An interesting question is what + * if the first variable (and not the fifth one is the redundant one; + * can that happen?) */ + return Abc_NodeCreateConst0(pNtkNew); + } + } + + // get information about the fanins of the supergate + nFanins = Map_SuperReadFaninNum( pSuper ); + ppFanins = Map_SuperReadFanins( pSuper ); + // create a new node with these fanins + pNodeNew = Abc_NtkCreateNode( pNtkNew ); + for ( i = 0; i < nFanins; i++ ) + { + pNodeFanin = Abc_NodeFromMapSuperChoice_rec( pNtkNew, ppFanins[i], pNodePis, nNodePis ); + Abc_ObjAddFanin( pNodeNew, pNodeFanin ); + } + pNodeNew->pData = Abc_SopRegister( pNtkNew->pManFunc, Mio_GateReadSop(pRoot) ); + return pNodeNew; +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcMiter.c b/src/base/abci/abcMiter.c new file mode 100644 index 00000000..0d75ba1f --- /dev/null +++ b/src/base/abci/abcMiter.c @@ -0,0 +1,600 @@ +/**CFile**************************************************************** + + FileName [abcMiter.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Procedures to derive the miter of two circuits.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcMiter.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static Abc_Ntk_t * Abc_NtkMiterInt( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb ); +static void Abc_NtkMiterPrepare( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, Abc_Ntk_t * pNtkMiter, int fComb ); +static void Abc_NtkMiterAddOne( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkMiter ); +static void Abc_NtkMiterAddCone( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkMiter, Abc_Obj_t * pNode ); +static void Abc_NtkMiterFinalize( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, Abc_Ntk_t * pNtkMiter, int fComb ); +static void Abc_NtkAddFrame( Abc_Ntk_t * pNetNew, Abc_Ntk_t * pNet, int iFrame, Vec_Ptr_t * vNodes ); + + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Derives the miter of two networks.] + + Description [Preprocesses the networks to make sure that they are strashed.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkMiter( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb ) +{ + Abc_Ntk_t * pTemp = NULL; + int fRemove1, fRemove2; + // check that the networks have the same PIs/POs/latches + if ( !Abc_NtkCompareSignals( pNtk1, pNtk2, fComb ) ) + return NULL; + // make sure the circuits are strashed + fRemove1 = (!Abc_NtkIsStrash(pNtk1)) && (pNtk1 = Abc_NtkStrash(pNtk1, 0, 0)); + fRemove2 = (!Abc_NtkIsStrash(pNtk2)) && (pNtk2 = Abc_NtkStrash(pNtk2, 0, 0)); + if ( pNtk1 && pNtk2 ) + pTemp = Abc_NtkMiterInt( pNtk1, pNtk2, fComb ); + if ( fRemove1 ) Abc_NtkDelete( pNtk1 ); + if ( fRemove2 ) Abc_NtkDelete( pNtk2 ); + return pTemp; +} + +/**Function************************************************************* + + Synopsis [Derives the miter of two sequential networks.] + + Description [Assumes that the networks are strashed.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkMiterInt( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fComb ) +{ + int fCheck = 1; + char Buffer[100]; + Abc_Ntk_t * pNtkMiter; + + assert( Abc_NtkIsStrash(pNtk1) ); + assert( Abc_NtkIsStrash(pNtk2) ); + + // start the new network + pNtkMiter = Abc_NtkAlloc( ABC_TYPE_STRASH, ABC_FUNC_AIG ); + sprintf( Buffer, "%s_%s_miter", pNtk1->pName, pNtk2->pName ); + pNtkMiter->pName = util_strsav(Buffer); + + // perform strashing + Abc_NtkMiterPrepare( pNtk1, pNtk2, pNtkMiter, fComb ); + Abc_NtkMiterAddOne( pNtk1, pNtkMiter ); + Abc_NtkMiterAddOne( pNtk2, pNtkMiter ); + Abc_NtkMiterFinalize( pNtk1, pNtk2, pNtkMiter, fComb ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkMiter ) ) + { + printf( "Abc_NtkMiter: The network check has failed.\n" ); + Abc_NtkDelete( pNtkMiter ); + return NULL; + } + return pNtkMiter; +} + +/**Function************************************************************* + + Synopsis [Prepares the network for mitering.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkMiterPrepare( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, Abc_Ntk_t * pNtkMiter, int fComb ) +{ + Abc_Obj_t * pObj, * pObjNew; + int i; + // clean the copy field in all objects +// Abc_NtkCleanCopy( pNtk1 ); +// Abc_NtkCleanCopy( pNtk2 ); + if ( fComb ) + { + // create new PIs and remember them in the old PIs + Abc_NtkForEachCi( pNtk1, pObj, i ) + { + pObjNew = Abc_NtkCreatePi( pNtkMiter ); + // remember this PI in the old PIs + pObj->pCopy = pObjNew; + pObj = Abc_NtkCi(pNtk2, i); + pObj->pCopy = pObjNew; + // add name + Abc_NtkLogicStoreName( pObjNew, Abc_ObjName(pObj) ); + } + // create the only PO + pObjNew = Abc_NtkCreatePo( pNtkMiter ); + // add the PO name + Abc_NtkLogicStoreName( pObjNew, "miter" ); + } + else + { + // create new PIs and remember them in the old PIs + Abc_NtkForEachPi( pNtk1, pObj, i ) + { + pObjNew = Abc_NtkCreatePi( pNtkMiter ); + // remember this PI in the old PIs + pObj->pCopy = pObjNew; + pObj = Abc_NtkPi(pNtk2, i); + pObj->pCopy = pObjNew; + // add name + Abc_NtkLogicStoreName( pObjNew, Abc_ObjName(pObj) ); + } + // create the only PO + pObjNew = Abc_NtkCreatePo( pNtkMiter ); + // add the PO name + Abc_NtkLogicStoreName( pObjNew, "miter" ); + // create the latches + Abc_NtkForEachLatch( pNtk1, pObj, i ) + { + pObjNew = Abc_NtkDupObj( pNtkMiter, pObj ); + Vec_PtrPush( pNtkMiter->vCis, pObjNew ); + Vec_PtrPush( pNtkMiter->vCos, pObjNew ); + // add name + Abc_NtkLogicStoreNamePlus( pObjNew, Abc_ObjName(pObj), "_1" ); + } + Abc_NtkForEachLatch( pNtk2, pObj, i ) + { + pObjNew = Abc_NtkDupObj( pNtkMiter, pObj ); + Vec_PtrPush( pNtkMiter->vCis, pObjNew ); + Vec_PtrPush( pNtkMiter->vCos, pObjNew ); + // add name + Abc_NtkLogicStoreNamePlus( pObjNew, Abc_ObjName(pObj), "_2" ); + } + } +} + +/**Function************************************************************* + + Synopsis [Performs mitering for one network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkMiterAddOne( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkMiter ) +{ + ProgressBar * pProgress; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode, * pConst1, * pConst1New; + int i; + // get the constant nodes + pConst1 = Abc_AigConst1( pNtk->pManFunc ); + pConst1New = Abc_AigConst1( pNtkMiter->pManFunc ); + // perform strashing + vNodes = Abc_NtkDfs( pNtk, 0 ); + pProgress = Extra_ProgressBarStart( stdout, vNodes->nSize ); + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + if ( pNode == pConst1 ) + pNode->pCopy = pConst1New; + else + pNode->pCopy = Abc_AigAnd( pNtkMiter->pManFunc, Abc_ObjChild0Copy(pNode), Abc_ObjChild1Copy(pNode) ); + } + Vec_PtrFree( vNodes ); + Extra_ProgressBarStop( pProgress ); +} + +/**Function************************************************************* + + Synopsis [Performs mitering for one network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkMiterAddCone( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkMiter, Abc_Obj_t * pRoot ) +{ + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode, * pNodeNew, * pConst1, * pConst1New; + int i; + // get the constant nodes + pConst1 = Abc_AigConst1( pNtk->pManFunc ); + pConst1New = Abc_AigConst1( pNtkMiter->pManFunc ); + // perform strashing + vNodes = Abc_NtkDfsNodes( pNtk, &pRoot, 1 ); + for ( i = 0; i < vNodes->nSize; i++ ) + { + pNode = vNodes->pArray[i]; + if ( pNode == pConst1 ) + pNodeNew = pConst1New; + else + pNodeNew = Abc_AigAnd( pNtkMiter->pManFunc, Abc_ObjChild0Copy(pNode), Abc_ObjChild1Copy(pNode) ); + pNode->pCopy = pNodeNew; + } + Vec_PtrFree( vNodes ); +} + + +/**Function************************************************************* + + Synopsis [Finalizes the miter by adding the output part.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkMiterFinalize( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, Abc_Ntk_t * pNtkMiter, int fComb ) +{ + Vec_Ptr_t * vPairs; + Abc_Obj_t * pMiter, * pNode; + int i; + // collect the PO pairs from both networks + vPairs = Vec_PtrAlloc( 100 ); + if ( fComb ) + { + // collect the CO nodes for the miter + Abc_NtkForEachCo( pNtk1, pNode, i ) + { + Vec_PtrPush( vPairs, Abc_ObjChild0Copy(pNode) ); + pNode = Abc_NtkCo( pNtk2, i ); + Vec_PtrPush( vPairs, Abc_ObjChild0Copy(pNode) ); + } + } + else + { + // collect the PO nodes for the miter + Abc_NtkForEachPo( pNtk1, pNode, i ) + { + Vec_PtrPush( vPairs, Abc_ObjChild0Copy(pNode) ); + pNode = Abc_NtkPo( pNtk2, i ); + Vec_PtrPush( vPairs, Abc_ObjChild0Copy(pNode) ); + } + // connect new latches + Abc_NtkForEachLatch( pNtk1, pNode, i ) + Abc_ObjAddFanin( pNode->pCopy, Abc_ObjChild0Copy(pNode) ); + Abc_NtkForEachLatch( pNtk2, pNode, i ) + Abc_ObjAddFanin( pNode->pCopy, Abc_ObjChild0Copy(pNode) ); + } + // add the miter + pMiter = Abc_AigMiter( pNtkMiter->pManFunc, vPairs ); + Abc_ObjAddFanin( Abc_NtkPo(pNtkMiter,0), pMiter ); + Vec_PtrFree( vPairs ); +} + + + + +/**Function************************************************************* + + Synopsis [Derives the miter of two cofactors of one output.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkMiterForCofactors( Abc_Ntk_t * pNtk, int Out, int In1, int In2 ) +{ + int fCheck = 1; + char Buffer[100]; + Abc_Ntk_t * pNtkMiter; + Abc_Obj_t * pRoot, * pOutput1, * pOutput2, * pMiter; + + assert( Abc_NtkIsStrash(pNtk) ); + assert( Out < Abc_NtkCoNum(pNtk) ); + assert( In1 < Abc_NtkCiNum(pNtk) ); + assert( In2 < Abc_NtkCiNum(pNtk) ); + + // start the new network + pNtkMiter = Abc_NtkAlloc( ABC_TYPE_STRASH, ABC_FUNC_AIG ); + sprintf( Buffer, "%s_miter", Abc_ObjName(Abc_NtkCo(pNtk, Out)) ); + pNtkMiter->pName = util_strsav(Buffer); + + // get the root output + pRoot = Abc_NtkCo( pNtk, Out ); + + // perform strashing + Abc_NtkMiterPrepare( pNtk, pNtk, pNtkMiter, 1 ); + // set the first cofactor + Abc_NtkCi(pNtk, In1)->pCopy = Abc_ObjNot( Abc_AigConst1(pNtkMiter->pManFunc) ); + if ( In2 >= 0 ) + Abc_NtkCi(pNtk, In2)->pCopy = Abc_AigConst1( pNtkMiter->pManFunc ); + // add the first cofactor + Abc_NtkMiterAddCone( pNtk, pNtkMiter, pRoot ); + + // save the output + pOutput1 = Abc_ObjFanin0(pRoot)->pCopy; + + // set the second cofactor + Abc_NtkCi(pNtk, In1)->pCopy = Abc_AigConst1( pNtkMiter->pManFunc ); + if ( In2 >= 0 ) + Abc_NtkCi(pNtk, In2)->pCopy = Abc_ObjNot( Abc_AigConst1(pNtkMiter->pManFunc) ); + // add the second cofactor + Abc_NtkMiterAddCone( pNtk, pNtkMiter, pRoot ); + + // save the output + pOutput2 = Abc_ObjFanin0(pRoot)->pCopy; + + // create the miter of the two outputs + pMiter = Abc_AigXor( pNtkMiter->pManFunc, pOutput1, pOutput2 ); + Abc_ObjAddFanin( Abc_NtkPo(pNtkMiter,0), pMiter ); + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkMiter ) ) + { + printf( "Abc_NtkMiter: The network check has failed.\n" ); + Abc_NtkDelete( pNtkMiter ); + return NULL; + } + return pNtkMiter; +} + + + + + +/**Function************************************************************* + + Synopsis [Checks the status of the miter.] + + Description [Return 1 if the miter is sat for at least one output. + Return 0 if the miter is unsat for all its outputs. Returns -1 if the + miter is undecided for some outputs.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkMiterIsConstant( Abc_Ntk_t * pMiter ) +{ + Abc_Obj_t * pNodePo, * pChild; + int i; + assert( Abc_NtkIsStrash(pMiter) ); + Abc_NtkForEachPo( pMiter, pNodePo, i ) + { + pChild = Abc_ObjChild0( Abc_NtkPo(pMiter,i) ); + if ( Abc_ObjIsNode(Abc_ObjRegular(pChild)) && Abc_NodeIsConst(pChild) ) + { + assert( Abc_ObjRegular(pChild) == Abc_AigConst1(pMiter->pManFunc) ); + if ( !Abc_ObjIsComplement(pChild) ) + { + // if the miter is constant 1, return immediately + printf( "MITER IS CONSTANT 1!\n" ); + return 1; + } + } + // if the miter is undecided (or satisfiable), return immediately + else + return -1; + } + // return 0, meaning all outputs are constant zero + return 0; +} + +/**Function************************************************************* + + Synopsis [Reports the status of the miter.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkMiterReport( Abc_Ntk_t * pMiter ) +{ + Abc_Obj_t * pChild, * pNode; + int i; + if ( Abc_NtkPoNum(pMiter) == 1 ) + { + pChild = Abc_ObjChild0( Abc_NtkPo(pMiter,0) ); + if ( Abc_ObjIsNode(Abc_ObjRegular(pChild)) && Abc_NodeIsConst(pChild) ) + { + if ( Abc_ObjIsComplement(pChild) ) + printf( "Unsatisfiable.\n" ); + else + printf( "Satisfiable. (Constant 1).\n" ); + } + else + printf( "Satisfiable.\n" ); + } + else + { + Abc_NtkForEachPo( pMiter, pNode, i ) + { + pChild = Abc_ObjChild0( Abc_NtkPo(pMiter,i) ); + printf( "Output #%2d : ", i ); + if ( Abc_ObjIsNode(Abc_ObjRegular(pChild)) && Abc_NodeIsConst(pChild) ) + { + if ( Abc_ObjIsComplement(pChild) ) + printf( "Unsatisfiable.\n" ); + else + printf( "Satisfiable. (Constant 1).\n" ); + } + else + printf( "Satisfiable.\n" ); + } + } +} + + +/**Function************************************************************* + + Synopsis [Derives the timeframes of the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkFrames( Abc_Ntk_t * pNtk, int nFrames, int fInitial ) +{ + int fCheck = 1; + char Buffer[100]; + ProgressBar * pProgress; + Abc_Ntk_t * pNtkFrames; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pLatch, * pLatchNew; + int i, Counter; + assert( nFrames > 0 ); + assert( Abc_NtkIsStrash(pNtk) ); + // start the new network + pNtkFrames = Abc_NtkAlloc( ABC_TYPE_STRASH, ABC_FUNC_AIG ); + sprintf( Buffer, "%s_%d_frames", pNtk->pName, nFrames ); + pNtkFrames->pName = util_strsav(Buffer); + // create new latches (or their initial values) and remember them in the new latches + if ( !fInitial ) + { + Abc_NtkForEachLatch( pNtk, pLatch, i ) + Abc_NtkDupObj( pNtkFrames, pLatch ); + } + else + { + Counter = 0; + Abc_NtkForEachLatch( pNtk, pLatch, i ) + { + if ( Abc_LatchIsInitDc(pLatch) ) // don't-care initial value - create a new PI + { + pLatch->pCopy = Abc_NtkCreatePi(pNtkFrames); + Abc_NtkLogicStoreName( pLatch->pCopy, Abc_ObjName(pLatch) ); + Counter++; + } + else + pLatch->pCopy = Abc_ObjNotCond( Abc_AigConst1(pNtkFrames->pManFunc), Abc_LatchIsInit0(pLatch) ); + } + if ( Counter ) + printf( "Warning: %d uninitialized latches are replaced by free variables.\n", Counter ); + } + + // create the timeframes + vNodes = Abc_NtkDfs( pNtk, 0 ); + pProgress = Extra_ProgressBarStart( stdout, nFrames ); + for ( i = 0; i < nFrames; i++ ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + Abc_NtkAddFrame( pNtkFrames, pNtk, i, vNodes ); + } + Extra_ProgressBarStop( pProgress ); + Vec_PtrFree( vNodes ); + + // connect the new latches to the outputs of the last frame + if ( !fInitial ) + { + Abc_NtkForEachLatch( pNtk, pLatch, i ) + { + pLatchNew = Abc_NtkLatch(pNtkFrames, i); + Abc_ObjAddFanin( pLatchNew, Abc_ObjFanin0(pLatch)->pCopy ); + Vec_PtrPush( pNtkFrames->vCis, pLatchNew ); + Vec_PtrPush( pNtkFrames->vCos, pLatchNew ); + Abc_NtkLogicStoreName( pLatchNew, Abc_ObjName(pLatch) ); + } + } + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkFrames ) ) + { + printf( "Abc_NtkFrames: The network check has failed.\n" ); + Abc_NtkDelete( pNtkFrames ); + return NULL; + } + return pNtkFrames; +} + +/**Function************************************************************* + + Synopsis [Adds one time frame to the new network.] + + Description [Assumes that the latches of the old network point + to the outputs of the previous frame of the new network (pLatch->pCopy). + In the end, updates the latches of the old network to point to the + outputs of the current frame of the new network.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkAddFrame( Abc_Ntk_t * pNtkFrames, Abc_Ntk_t * pNtk, int iFrame, Vec_Ptr_t * vNodes ) +{ + char Buffer[10]; + Abc_Obj_t * pNode, * pNodeNew, * pLatch; + Abc_Obj_t * pConst1, * pConst1New; + int i; + // get the constant nodes + pConst1 = Abc_AigConst1( pNtk->pManFunc ); + pConst1New = Abc_AigConst1( pNtkFrames->pManFunc ); + // create the prefix to be added to the node names + sprintf( Buffer, "_%02d", iFrame ); + // add the new PI nodes + Abc_NtkForEachPi( pNtk, pNode, i ) + { + pNodeNew = Abc_NtkDupObj( pNtkFrames, pNode ); + Abc_NtkLogicStoreNamePlus( pNodeNew, Abc_ObjName(pNode), Buffer ); + } + // add the internal nodes + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + if ( pNode == pConst1 ) + pNodeNew = pConst1New; + else + pNodeNew = Abc_AigAnd( pNtkFrames->pManFunc, Abc_ObjChild0Copy(pNode), Abc_ObjChild1Copy(pNode) ); + pNode->pCopy = pNodeNew; + } + // add the new POs + Abc_NtkForEachPo( pNtk, pNode, i ) + { + pNodeNew = Abc_NtkDupObj( pNtkFrames, pNode ); + Abc_ObjAddFanin( pNodeNew, Abc_ObjChild0Copy(pNode) ); + Abc_NtkLogicStoreNamePlus( pNodeNew, Abc_ObjName(pNode), Buffer ); + } + // transfer the implementation of the latch drivers to the latches + Abc_NtkForEachLatch( pNtk, pLatch, i ) + pLatch->pCopy = Abc_ObjChild0Copy(pLatch); +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcNtbdd.c b/src/base/abci/abcNtbdd.c new file mode 100644 index 00000000..61c1a110 --- /dev/null +++ b/src/base/abci/abcNtbdd.c @@ -0,0 +1,402 @@ +/**CFile**************************************************************** + + FileName [abcNtbdd.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Procedures to translate between the BDD and the network.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcNtbdd.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static void Abc_NtkBddToMuxesPerform( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ); +static Abc_Obj_t * Abc_NodeBddToMuxes( Abc_Obj_t * pNodeOld, Abc_Ntk_t * pNtkNew, Abc_Obj_t * pConst1 ); +static Abc_Obj_t * Abc_NodeBddToMuxes_rec( DdManager * dd, DdNode * bFunc, Abc_Ntk_t * pNtkNew, st_table * tBdd2Node ); +static DdNode * Abc_NodeGlobalBdds_rec( DdManager * dd, Abc_Obj_t * pNode ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Constructs the network isomorphic to the given BDD.] + + Description [Assumes that the BDD depends on the variables whose indexes + correspond to the names in the array (pNamesPi). Otherwise, returns NULL. + The resulting network comes with one node, whose functionality is + equal to the given BDD. To decompose this BDD into the network of + multiplexers use Abc_NtkBddToMuxes(). To decompose this BDD into + an And-Inverter Graph, use Abc_NtkStrash().] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkDeriveFromBdd( DdManager * dd, DdNode * bFunc, char * pNamePo, Vec_Ptr_t * vNamesPi ) +{ + Abc_Ntk_t * pNtk; + Vec_Ptr_t * vNamesPiFake = NULL; + Abc_Obj_t * pNode, * pNodePi, * pNodePo; + DdNode * bSupp, * bTemp; + char * pName; + int i; + + // supply fake names if real names are not given + if ( pNamePo == NULL ) + pNamePo = "F"; + if ( vNamesPi == NULL ) + { + vNamesPiFake = Abc_NodeGetFakeNames( dd->size ); + vNamesPi = vNamesPiFake; + } + + // make sure BDD depends on the variables whose index + // does not exceed the size of the array with PI names + bSupp = Cudd_Support( dd, bFunc ); Cudd_Ref( bSupp ); + for ( bTemp = bSupp; bTemp != Cudd_ReadOne(dd); bTemp = cuddT(bTemp) ) + if ( (int)Cudd_NodeReadIndex(bTemp) >= Vec_PtrSize(vNamesPi) ) + break; + Cudd_RecursiveDeref( dd, bSupp ); + if ( bTemp != Cudd_ReadOne(dd) ) + return NULL; + + // start the network + pNtk = Abc_NtkAlloc( ABC_TYPE_LOGIC, ABC_FUNC_BDD ); + pNtk->pName = util_strsav(pNamePo); + // make sure the new manager has enough inputs + Cudd_bddIthVar( pNtk->pManFunc, Vec_PtrSize(vNamesPi) ); + // add the PIs corresponding to the names + Vec_PtrForEachEntry( vNamesPi, pName, i ) + Abc_NtkLogicStoreName( Abc_NtkCreatePi(pNtk), pName ); + // create the node + pNode = Abc_NtkCreateNode( pNtk ); + pNode->pData = Cudd_bddTransfer( dd, pNtk->pManFunc, bFunc ); Cudd_Ref(pNode->pData); + Abc_NtkForEachPi( pNtk, pNodePi, i ) + Abc_ObjAddFanin( pNode, pNodePi ); + // create the only PO + pNodePo = Abc_NtkCreatePo( pNtk ); + Abc_ObjAddFanin( pNodePo, pNode ); + Abc_NtkLogicStoreName( pNodePo, pNamePo ); + // make the network minimum base + Abc_NtkMinimumBase( pNtk ); + if ( vNamesPiFake ) + Abc_NodeFreeNames( vNamesPiFake ); + if ( !Abc_NtkCheck( pNtk ) ) + fprintf( stdout, "Abc_NtkDeriveFromBdd(): Network check has failed.\n" ); + return pNtk; +} + + + +/**Function************************************************************* + + Synopsis [Creates the network isomorphic to the union of local BDDs of the nodes.] + + Description [The nodes of the local BDDs are converted into the network nodes + with logic functions equal to the MUX.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkBddToMuxes( Abc_Ntk_t * pNtk ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + assert( Abc_NtkIsBddLogic(pNtk) ); + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_LOGIC, ABC_FUNC_SOP ); + Abc_NtkBddToMuxesPerform( pNtk, pNtkNew ); + Abc_NtkFinalize( pNtk, pNtkNew ); + // make sure everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkBddToMuxes: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Converts the network to MUXes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkBddToMuxesPerform( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ) +{ + ProgressBar * pProgress; + DdManager * dd = pNtk->pManFunc; + Abc_Obj_t * pNode, * pNodeNew, * pConst1; + Vec_Ptr_t * vNodes; + int i; + // create the constant one node + pConst1 = Abc_NodeCreateConst1( pNtkNew ); + // perform conversion in the topological order + vNodes = Abc_NtkDfs( pNtk, 0 ); + pProgress = Extra_ProgressBarStart( stdout, vNodes->nSize ); + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // convert one node + assert( Abc_ObjIsNode(pNode) ); + pNodeNew = Abc_NodeBddToMuxes( pNode, pNtkNew, pConst1 ); + // mark the old node with the new one + assert( pNode->pCopy == NULL ); + pNode->pCopy = pNodeNew; + } + Vec_PtrFree( vNodes ); + Extra_ProgressBarStop( pProgress ); +} + +/**Function************************************************************* + + Synopsis [Converts the node to MUXes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeBddToMuxes( Abc_Obj_t * pNodeOld, Abc_Ntk_t * pNtkNew, Abc_Obj_t * pConst1 ) +{ + DdManager * dd = pNodeOld->pNtk->pManFunc; + DdNode * bFunc = pNodeOld->pData; + Abc_Obj_t * pFaninOld, * pNodeNew; + st_table * tBdd2Node; + int i; + // create the table mapping BDD nodes into the ABC nodes + tBdd2Node = st_init_table( st_ptrcmp, st_ptrhash ); + // add the constant and the elementary vars + st_insert( tBdd2Node, (char *)b1, (char *)pConst1 ); + Abc_ObjForEachFanin( pNodeOld, pFaninOld, i ) + st_insert( tBdd2Node, (char *)Cudd_bddIthVar(dd, i), (char *)pFaninOld->pCopy ); + // create the new nodes recursively + pNodeNew = Abc_NodeBddToMuxes_rec( dd, Cudd_Regular(bFunc), pNtkNew, tBdd2Node ); + st_free_table( tBdd2Node ); + if ( Cudd_IsComplement(bFunc) ) + pNodeNew = Abc_NodeCreateInv( pNtkNew, pNodeNew ); + return pNodeNew; +} + +/**Function************************************************************* + + Synopsis [Converts the node to MUXes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeBddToMuxes_rec( DdManager * dd, DdNode * bFunc, Abc_Ntk_t * pNtkNew, st_table * tBdd2Node ) +{ + Abc_Obj_t * pNodeNew, * pNodeNew0, * pNodeNew1, * pNodeNewC; + assert( !Cudd_IsComplement(bFunc) ); + if ( st_lookup( tBdd2Node, (char *)bFunc, (char **)&pNodeNew ) ) + return pNodeNew; + // solve for the children nodes + pNodeNew0 = Abc_NodeBddToMuxes_rec( dd, Cudd_Regular(cuddE(bFunc)), pNtkNew, tBdd2Node ); + if ( Cudd_IsComplement(cuddE(bFunc)) ) + pNodeNew0 = Abc_NodeCreateInv( pNtkNew, pNodeNew0 ); + pNodeNew1 = Abc_NodeBddToMuxes_rec( dd, cuddT(bFunc), pNtkNew, tBdd2Node ); + if ( !st_lookup( tBdd2Node, (char *)Cudd_bddIthVar(dd, bFunc->index), (char **)&pNodeNewC ) ) + assert( 0 ); + // create the MUX node + pNodeNew = Abc_NodeCreateMux( pNtkNew, pNodeNewC, pNodeNew1, pNodeNew0 ); + st_insert( tBdd2Node, (char *)bFunc, (char *)pNodeNew ); + return pNodeNew; +} + + +/**Function************************************************************* + + Synopsis [Derives global BDDs for the COs of the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdManager * Abc_NtkGlobalBdds( Abc_Ntk_t * pNtk, int fLatchOnly ) +{ + int fReorder = 1; + ProgressBar * pProgress; + Vec_Ptr_t * vFuncsGlob; + Abc_Obj_t * pNode; + DdNode * bFunc; + DdManager * dd; + int i; + + // start the manager + assert( pNtk->pManGlob == NULL ); + dd = Cudd_Init( Abc_NtkCiNum(pNtk), 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 ); + if ( fReorder ) + Cudd_AutodynEnable( dd, CUDD_REORDER_SYMM_SIFT ); + + // set the elementary variables + Abc_NtkCleanCopy( pNtk ); + Abc_NtkForEachCi( pNtk, pNode, i ) + pNode->pCopy = (Abc_Obj_t *)dd->vars[i]; + // assign the constant node BDD + pNode = Abc_AigConst1( pNtk->pManFunc ); + pNode->pCopy = (Abc_Obj_t *)dd->one; Cudd_Ref( dd->one ); + + // collect the global functions of the COs + vFuncsGlob = Vec_PtrAlloc( 100 ); + if ( fLatchOnly ) + { + // construct the BDDs + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkLatchNum(pNtk) ); + Abc_NtkForEachLatch( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + bFunc = Abc_NodeGlobalBdds_rec( dd, Abc_ObjFanin0(pNode) ); + if ( bFunc == NULL ) + { + printf( "Constructing global BDDs timed out.\n" ); + Extra_ProgressBarStop( pProgress ); + Cudd_Quit( dd ); + return NULL; + } + bFunc = Cudd_NotCond( bFunc, Abc_ObjFaninC0(pNode) ); Cudd_Ref( bFunc ); + Vec_PtrPush( vFuncsGlob, bFunc ); + } + Extra_ProgressBarStop( pProgress ); + } + else + { + // construct the BDDs + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCoNum(pNtk) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + bFunc = Abc_NodeGlobalBdds_rec( dd, Abc_ObjFanin0(pNode) ); + if ( bFunc == NULL ) + { + printf( "Constructing global BDDs timed out.\n" ); + Extra_ProgressBarStop( pProgress ); + Cudd_Quit( dd ); + return NULL; + } + bFunc = Cudd_NotCond( bFunc, Abc_ObjFaninC0(pNode) ); Cudd_Ref( bFunc ); + Vec_PtrPush( vFuncsGlob, bFunc ); + } + Extra_ProgressBarStop( pProgress ); + } + + // derefence the intermediate BDDs + Abc_NtkForEachNode( pNtk, pNode, i ) + if ( pNode->pCopy ) + { + Cudd_RecursiveDeref( dd, (DdNode *)pNode->pCopy ); + pNode->pCopy = NULL; + } + // reorder one more time + if ( fReorder ) + { + Cudd_ReduceHeap( dd, CUDD_REORDER_SYMM_SIFT, 1 ); + Cudd_AutodynDisable( dd ); + } + pNtk->pManGlob = dd; + pNtk->vFuncsGlob = vFuncsGlob; + return dd; +} + +/**Function************************************************************* + + Synopsis [Derives the global BDD for one AIG node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NodeGlobalBdds_rec( DdManager * dd, Abc_Obj_t * pNode ) +{ + DdNode * bFunc, * bFunc0, * bFunc1; + assert( !Abc_ObjIsComplement(pNode) ); + if ( Cudd_ReadKeys(dd) > 500000 ) + return NULL; + // if the result is available return + if ( pNode->pCopy ) + return (DdNode *)pNode->pCopy; + // compute the result for both branches + bFunc0 = Abc_NodeGlobalBdds_rec( dd, Abc_ObjFanin(pNode,0) ); + if ( bFunc0 == NULL ) + return NULL; + Cudd_Ref( bFunc0 ); + bFunc1 = Abc_NodeGlobalBdds_rec( dd, Abc_ObjFanin(pNode,1) ); + if ( bFunc1 == NULL ) + return NULL; + Cudd_Ref( bFunc1 ); + bFunc0 = Cudd_NotCond( bFunc0, Abc_ObjFaninC0(pNode) ); + bFunc1 = Cudd_NotCond( bFunc1, Abc_ObjFaninC1(pNode) ); + // get the final result + bFunc = Cudd_bddAnd( dd, bFunc0, bFunc1 ); Cudd_Ref( bFunc ); + Cudd_RecursiveDeref( dd, bFunc0 ); + Cudd_RecursiveDeref( dd, bFunc1 ); + // set the result + assert( pNode->pCopy == NULL ); + pNode->pCopy = (Abc_Obj_t *)bFunc; + return bFunc; +} + +/**Function************************************************************* + + Synopsis [Dereferences global BDDs of the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFreeGlobalBdds( Abc_Ntk_t * pNtk ) +{ + DdNode * bFunc; + int i; + assert( pNtk->pManGlob ); + assert( pNtk->vFuncsGlob ); + Vec_PtrForEachEntry( pNtk->vFuncsGlob, bFunc, i ) + Cudd_RecursiveDeref( pNtk->pManGlob, bFunc ); + Vec_PtrFree( pNtk->vFuncsGlob ); + pNtk->vFuncsGlob = NULL; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcPrint.c b/src/base/abci/abcPrint.c new file mode 100644 index 00000000..41b9288e --- /dev/null +++ b/src/base/abci/abcPrint.c @@ -0,0 +1,505 @@ +/**CFile**************************************************************** + + FileName [abcPrint.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Printing statistics.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcPrint.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "dec.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Print the vital stats of the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkPrintStats( FILE * pFile, Abc_Ntk_t * pNtk, int fFactored ) +{ + int Num; + + fprintf( pFile, "%-13s:", pNtk->pName ); + fprintf( pFile, " i/o = %4d/%4d", Abc_NtkPiNum(pNtk), Abc_NtkPoNum(pNtk) ); + + if ( !Abc_NtkIsSeq(pNtk) ) + fprintf( pFile, " lat = %4d", Abc_NtkLatchNum(pNtk) ); + else + fprintf( pFile, " lat = %4d", Abc_NtkSeqLatchNum(pNtk) ); + + if ( Abc_NtkIsNetlist(pNtk) ) + { + fprintf( pFile, " net = %5d", Abc_NtkNetNum(pNtk) ); + fprintf( pFile, " nd = %5d", Abc_NtkNodeNum(pNtk) ); + } + else if ( Abc_NtkIsStrash(pNtk) ) + { + fprintf( pFile, " and = %5d", Abc_NtkNodeNum(pNtk) ); + if ( Num = Abc_NtkGetChoiceNum(pNtk) ) + fprintf( pFile, " (choice = %d)", Num ); + if ( Num = Abc_NtkGetExorNum(pNtk) ) + fprintf( pFile, " (exor = %d)", Num ); + } + else if ( Abc_NtkIsSeq(pNtk) ) + fprintf( pFile, " and = %5d", Abc_NtkNodeNum(pNtk) ); + else + fprintf( pFile, " nd = %5d", Abc_NtkNodeNum(pNtk) ); + + if ( Abc_NtkHasSop(pNtk) ) + { + fprintf( pFile, " cube = %5d", Abc_NtkGetCubeNum(pNtk) ); +// fprintf( pFile, " lit(sop) = %5d", Abc_NtkGetLitNum(pNtk) ); + if ( fFactored ) + fprintf( pFile, " lit(fac) = %5d", Abc_NtkGetLitFactNum(pNtk) ); + } + else if ( Abc_NtkHasBdd(pNtk) ) + fprintf( pFile, " bdd = %5d", Abc_NtkGetBddNodeNum(pNtk) ); + else if ( Abc_NtkHasMapping(pNtk) ) + { + fprintf( pFile, " area = %5.2f", Abc_NtkGetMappedArea(pNtk) ); + fprintf( pFile, " delay = %5.2f", Abc_NtkDelayTrace(pNtk) ); + } + else if ( !Abc_NtkHasAig(pNtk) ) + { + assert( 0 ); + } + + if ( Abc_NtkIsStrash(pNtk) ) + fprintf( pFile, " lev = %3d", Abc_AigGetLevelNum(pNtk) ); + else if ( !Abc_NtkIsSeq(pNtk) ) + fprintf( pFile, " lev = %3d", Abc_NtkGetLevelNum(pNtk) ); + + fprintf( pFile, "\n" ); +} + +/**Function************************************************************* + + Synopsis [Prints PIs/POs and LIs/LOs.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkPrintIo( FILE * pFile, Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pObj; + int i; + + fprintf( pFile, "Primary inputs (%d): ", Abc_NtkPiNum(pNtk) ); + Abc_NtkForEachPi( pNtk, pObj, i ) + fprintf( pFile, " %s", Abc_ObjName(pObj) ); + fprintf( pFile, "\n" ); + + fprintf( pFile, "Primary outputs (%d):", Abc_NtkPoNum(pNtk) ); + Abc_NtkForEachPo( pNtk, pObj, i ) + fprintf( pFile, " %s", Abc_ObjName(pObj) ); + fprintf( pFile, "\n" ); + + fprintf( pFile, "Latches (%d): ", Abc_NtkLatchNum(pNtk) ); + Abc_NtkForEachLatch( pNtk, pObj, i ) + fprintf( pFile, " %s", Abc_ObjName(pObj) ); + fprintf( pFile, "\n" ); +} + +/**Function************************************************************* + + Synopsis [Prints statistics about latches.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkPrintLatch( FILE * pFile, Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pLatch, * pFanin; + int i, Counter0, Counter1, Counter2; + int Init0, Init1, Init2; + + if ( Abc_NtkLatchNum(pNtk) == 0 ) + { + fprintf( pFile, "The network is combinational.\n" ); + return; + } + + assert( !Abc_NtkIsNetlist(pNtk) ); + + Init0 = Init1 = Init2 = 0; + Counter0 = Counter1 = Counter2 = 0; + + Abc_NtkForEachLatch( pNtk, pLatch, i ) + { + if ( Abc_LatchIsInit0(pLatch) ) + Init0++; + else if ( Abc_LatchIsInit1(pLatch) ) + Init1++; + else if ( Abc_LatchIsInitDc(pLatch) ) + Init2++; + else + assert( 0 ); + + pFanin = Abc_ObjFanin0(pLatch); + if ( !Abc_ObjIsNode(pFanin) || !Abc_NodeIsConst(pFanin) ) + continue; + + // the latch input is a constant node + Counter0++; + if ( Abc_LatchIsInitDc(pLatch) ) + { + Counter1++; + continue; + } + // count the number of cases when the constant is equal to the initial value + if ( Abc_NtkIsStrash(pNtk) ) + { + if ( Abc_LatchIsInit1(pLatch) == !Abc_ObjFaninC0(pLatch) ) + Counter2++; + } + else + { + if ( Abc_LatchIsInit1(pLatch) == Abc_NodeIsConst1(pLatch) ) + Counter2++; + } + } +// fprintf( pFile, "%-15s: ", pNtk->pName ); +// fprintf( pFile, "L = %5d: 0 = %4d. 1 = %3d. DC = %4d. ", Abc_NtkLatchNum(pNtk), Init0, Init1, Init2 ); +// fprintf( pFile, "Con = %3d. DC = %3d. Mat = %3d. ", Counter0, Counter1, Counter2 ); +// fprintf( pFile, "SFeed = %2d.\n", Abc_NtkCountSelfFeedLatches(pNtk) ); + fprintf( pFile, "%-15s: ", pNtk->pName ); + fprintf( pFile, "Lat = %5d: 0 = %4d. 1 = %3d. DC = %4d. \n", Abc_NtkLatchNum(pNtk), Init0, Init1, Init2 ); + fprintf( pFile, "Con = %3d. DC = %3d. Mat = %3d. ", Counter0, Counter1, Counter2 ); + fprintf( pFile, "SFeed = %2d.\n", Abc_NtkCountSelfFeedLatches(pNtk) ); +} + +/**Function************************************************************* + + Synopsis [Prints the distribution of fanins/fanouts in the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkPrintFanio( FILE * pFile, Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pNode; + int i, k, nFanins, nFanouts; + Vec_Int_t * vFanins, * vFanouts; + int nOldSize, nNewSize; + + vFanins = Vec_IntAlloc( 0 ); + vFanouts = Vec_IntAlloc( 0 ); + Vec_IntFill( vFanins, 100, 0 ); + Vec_IntFill( vFanouts, 100, 0 ); + Abc_NtkForEachNode( pNtk, pNode, i ) + { + nFanins = Abc_ObjFaninNum(pNode); + if ( Abc_NtkIsNetlist(pNtk) ) + nFanouts = Abc_ObjFanoutNum( Abc_ObjFanout0(pNode) ); + else + nFanouts = Abc_ObjFanoutNum(pNode); + if ( nFanins > vFanins->nSize || nFanouts > vFanouts->nSize ) + { + nOldSize = vFanins->nSize; + nNewSize = ABC_MAX(nFanins, nFanouts) + 10; + Vec_IntGrow( vFanins, nNewSize ); + Vec_IntGrow( vFanouts, nNewSize ); + for ( k = nOldSize; k < nNewSize; k++ ) + { + Vec_IntPush( vFanins, 0 ); + Vec_IntPush( vFanouts, 0 ); + } + } + vFanins->pArray[nFanins]++; + vFanouts->pArray[nFanouts]++; + } + fprintf( pFile, "The distribution of fanins and fanouts in the network:\n" ); + fprintf( pFile, " Number Nodes with fanin Nodes with fanout\n" ); + for ( k = 0; k < vFanins->nSize; k++ ) + { + if ( vFanins->pArray[k] == 0 && vFanouts->pArray[k] == 0 ) + continue; + fprintf( pFile, "%5d : ", k ); + if ( vFanins->pArray[k] == 0 ) + fprintf( pFile, " " ); + else + fprintf( pFile, "%12d ", vFanins->pArray[k] ); + fprintf( pFile, " " ); + if ( vFanouts->pArray[k] == 0 ) + fprintf( pFile, " " ); + else + fprintf( pFile, "%12d ", vFanouts->pArray[k] ); + fprintf( pFile, "\n" ); + } + Vec_IntFree( vFanins ); + Vec_IntFree( vFanouts ); +} + +/**Function************************************************************* + + Synopsis [Prints the fanins/fanouts of a node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodePrintFanio( FILE * pFile, Abc_Obj_t * pNode ) +{ + Abc_Obj_t * pNode2; + int i; + if ( Abc_ObjIsPo(pNode) ) + pNode = Abc_ObjFanin0(pNode); + + fprintf( pFile, "Node %s", Abc_ObjName(pNode) ); + fprintf( pFile, "\n" ); + + fprintf( pFile, "Fanins (%d): ", Abc_ObjFaninNum(pNode) ); + Abc_ObjForEachFanin( pNode, pNode2, i ) + fprintf( pFile, " %s", Abc_ObjName(pNode2) ); + fprintf( pFile, "\n" ); + + fprintf( pFile, "Fanouts (%d): ", Abc_ObjFaninNum(pNode) ); + Abc_ObjForEachFanout( pNode, pNode2, i ) + fprintf( pFile, " %s", Abc_ObjName(pNode2) ); + fprintf( pFile, "\n" ); +} + +/**Function************************************************************* + + Synopsis [Prints the factored form of one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkPrintFactor( FILE * pFile, Abc_Ntk_t * pNtk, int fUseRealNames ) +{ + Abc_Obj_t * pNode; + int i; + assert( Abc_NtkIsSopLogic(pNtk) ); + Abc_NtkForEachNode( pNtk, pNode, i ) + Abc_NodePrintFactor( pFile, pNode, fUseRealNames ); +} + +/**Function************************************************************* + + Synopsis [Prints the factored form of one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodePrintFactor( FILE * pFile, Abc_Obj_t * pNode, int fUseRealNames ) +{ + Dec_Graph_t * pGraph; + Vec_Ptr_t * vNamesIn; + if ( Abc_ObjIsCo(pNode) ) + pNode = Abc_ObjFanin0(pNode); + if ( Abc_ObjIsPi(pNode) ) + { + fprintf( pFile, "Skipping the PI node.\n" ); + return; + } + if ( Abc_ObjIsLatch(pNode) ) + { + fprintf( pFile, "Skipping the latch.\n" ); + return; + } + assert( Abc_ObjIsNode(pNode) ); + pGraph = Dec_Factor( pNode->pData ); + if ( fUseRealNames ) + { + vNamesIn = Abc_NodeGetFaninNames(pNode); + Dec_GraphPrint( stdout, pGraph, (char **)vNamesIn->pArray, Abc_ObjName(pNode) ); + Abc_NodeFreeNames( vNamesIn ); + } + else + Dec_GraphPrint( stdout, pGraph, (char **)NULL, Abc_ObjName(pNode) ); + Dec_GraphFree( pGraph ); +} + + +/**Function************************************************************* + + Synopsis [Prints the level stats of the PO node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkPrintLevel( FILE * pFile, Abc_Ntk_t * pNtk, int fProfile ) +{ + Abc_Obj_t * pNode; + int i, Length; + + // print the delay profile + if ( fProfile && Abc_NtkHasMapping(pNtk) ) + { + int nIntervals = 12; + float DelayMax, DelayCur, DelayDelta; + int * pLevelCounts; + int DelayInt, nOutsSum, nOutsTotal; + + // get the max delay and delta + DelayMax = Abc_NtkDelayTrace( pNtk ); + DelayDelta = DelayMax/nIntervals; + // collect outputs by delay + pLevelCounts = ALLOC( int, nIntervals ); + memset( pLevelCounts, 0, sizeof(int) * nIntervals ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + DelayCur = Abc_NodeReadArrival( Abc_ObjFanin0(pNode) )->Worst; + DelayInt = (int)(DelayCur / DelayDelta); + if ( DelayInt >= nIntervals ) + DelayInt = nIntervals - 1; + pLevelCounts[DelayInt]++; + } + + nOutsSum = 0; + nOutsTotal = Abc_NtkCoNum(pNtk); + for ( i = 0; i < nIntervals; i++ ) + { + nOutsSum += pLevelCounts[i]; + printf( "[%8.2f - %8.2f] : COs = %4d. %5.1f %%\n", + DelayDelta * i, DelayDelta * (i+1), pLevelCounts[i], 100.0 * nOutsSum/nOutsTotal ); + } + free( pLevelCounts ); + return; + } + else if ( fProfile ) + { + int LevelMax, * pLevelCounts; + int nOutsSum, nOutsTotal; + + if ( !Abc_NtkIsStrash(pNtk) ) + Abc_NtkGetLevelNum(pNtk); + + LevelMax = 0; + Abc_NtkForEachCo( pNtk, pNode, i ) + if ( LevelMax < (int)Abc_ObjFanin0(pNode)->Level ) + LevelMax = Abc_ObjFanin0(pNode)->Level; + pLevelCounts = ALLOC( int, LevelMax + 1 ); + memset( pLevelCounts, 0, sizeof(int) * (LevelMax + 1) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + pLevelCounts[Abc_ObjFanin0(pNode)->Level]++; + + nOutsSum = 0; + nOutsTotal = Abc_NtkCoNum(pNtk); + for ( i = 0; i <= LevelMax; i++ ) + if ( pLevelCounts[i] ) + { + nOutsSum += pLevelCounts[i]; + printf( "Level = %4d. COs = %4d. %5.1f %%\n", i, pLevelCounts[i], 100.0 * nOutsSum/nOutsTotal ); + } + free( pLevelCounts ); + return; + } + assert( Abc_NtkIsStrash(pNtk) ); + + // find the longest name + Length = 0; + Abc_NtkForEachCo( pNtk, pNode, i ) + if ( Length < (int)strlen(Abc_ObjName(pNode)) ) + Length = strlen(Abc_ObjName(pNode)); + if ( Length < 5 ) + Length = 5; + // print stats for each output + Abc_NtkForEachCo( pNtk, pNode, i ) + { + fprintf( pFile, "CO %4d : %*s ", i, Length, Abc_ObjName(pNode) ); + Abc_NodePrintLevel( pFile, pNode ); + } +} + +/**Function************************************************************* + + Synopsis [Prints the factored form of one node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodePrintLevel( FILE * pFile, Abc_Obj_t * pNode ) +{ + Abc_Obj_t * pDriver; + Vec_Ptr_t * vNodes; + + pDriver = Abc_ObjIsCo(pNode)? Abc_ObjFanin0(pNode) : pNode; + if ( Abc_ObjIsPi(pDriver) ) + { + fprintf( pFile, "Primary input.\n" ); + return; + } + if ( Abc_ObjIsLatch(pDriver) ) + { + fprintf( pFile, "Latch.\n" ); + return; + } + if ( Abc_NodeIsConst(pDriver) ) + { + fprintf( pFile, "Constant %d.\n", !Abc_ObjFaninC0(pNode) ); + return; + } + // print the level + fprintf( pFile, "Level = %3d. ", pDriver->Level ); + // print the size of MFFC + fprintf( pFile, "Mffc = %5d. ", Abc_NodeMffcSize(pDriver) ); + // print the size of the shole cone + vNodes = Abc_NtkDfsNodes( pNode->pNtk, &pDriver, 1 ); + fprintf( pFile, "Cone = %5d. ", Vec_PtrSize(vNodes) ); + Vec_PtrFree( vNodes ); + fprintf( pFile, "\n" ); +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcReconv.c b/src/base/abci/abcReconv.c new file mode 100644 index 00000000..766c14f3 --- /dev/null +++ b/src/base/abci/abcReconv.c @@ -0,0 +1,742 @@ +/**CFile**************************************************************** + + FileName [abcRes.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Reconvergence=driven cut computation.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcRes.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +struct Abc_ManCut_t_ +{ + // user specified parameters + int nNodeSizeMax; // the limit on the size of the supernode + int nConeSizeMax; // the limit on the size of the containing cone + int nNodeFanStop; // the limit on the size of the supernode + int nConeFanStop; // the limit on the size of the containing cone + // internal parameters + Vec_Ptr_t * vNodeLeaves; // fanins of the collapsed node (the cut) + Vec_Ptr_t * vConeLeaves; // fanins of the containing cone + Vec_Ptr_t * vVisited; // the visited nodes + Vec_Vec_t * vLevels; // the data structure to compute TFO nodes + Vec_Ptr_t * vNodesTfo; // the nodes in the TFO of the cut +}; + +static int Abc_NodeBuildCutLevelOne_int( Vec_Ptr_t * vVisited, Vec_Ptr_t * vLeaves, int nSizeLimit, int nFaninLimit ); +static int Abc_NodeBuildCutLevelTwo_int( Vec_Ptr_t * vVisited, Vec_Ptr_t * vLeaves, int nFaninLimit ); +static void Abc_NodeConeMarkCollect_rec( Abc_Obj_t * pNode, Vec_Ptr_t * vVisited ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Unmarks the TFI cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline void Abc_NodesMark( Vec_Ptr_t * vVisited ) +{ + Abc_Obj_t * pNode; + int i; + Vec_PtrForEachEntry( vVisited, pNode, i ) + pNode->fMarkA = 1; +} + +/**Function************************************************************* + + Synopsis [Unmarks the TFI cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline void Abc_NodesUnmark( Vec_Ptr_t * vVisited ) +{ + Abc_Obj_t * pNode; + int i; + Vec_PtrForEachEntry( vVisited, pNode, i ) + pNode->fMarkA = 0; +} + +/**Function************************************************************* + + Synopsis [Unmarks the TFI cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline void Abc_NodesUnmarkB( Vec_Ptr_t * vVisited ) +{ + Abc_Obj_t * pNode; + int i; + Vec_PtrForEachEntry( vVisited, pNode, i ) + pNode->fMarkB = 0; +} + +/**Function************************************************************* + + Synopsis [Evaluate the cost of removing the node from the set of leaves.] + + Description [Returns the number of new leaves that will be brought in. + Returns large number if the node cannot be removed from the set of leaves.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline int Abc_NodeGetLeafCostOne( Abc_Obj_t * pNode, int nFaninLimit ) +{ + int Cost; + // make sure the node is in the construction zone + assert( pNode->fMarkB == 1 ); + // cannot expand over the PI node + if ( Abc_ObjIsCi(pNode) ) + return 999; + // get the cost of the cone + Cost = (!Abc_ObjFanin0(pNode)->fMarkB) + (!Abc_ObjFanin1(pNode)->fMarkB); + // always accept if the number of leaves does not increase + if ( Cost < 2 ) + return Cost; + // skip nodes with many fanouts + if ( Abc_ObjFanoutNum(pNode) > nFaninLimit ) + return 999; + // return the number of nodes that will be on the leaves if this node is removed + return Cost; +} + +/**Function************************************************************* + + Synopsis [Evaluate the cost of removing the node from the set of leaves.] + + Description [Returns the number of new leaves that will be brought in. + Returns large number if the node cannot be removed from the set of leaves.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +static inline int Abc_NodeGetLeafCostTwo( Abc_Obj_t * pNode, int nFaninLimit, + Abc_Obj_t ** ppLeafToAdd, Abc_Obj_t ** pNodeToMark1, Abc_Obj_t ** pNodeToMark2 ) +{ + Abc_Obj_t * pFanin0, * pFanin1, * pTemp; + Abc_Obj_t * pGrand, * pGrandToAdd; + // make sure the node is in the construction zone + assert( pNode->fMarkB == 1 ); + // cannot expand over the PI node + if ( Abc_ObjIsCi(pNode) ) + return 999; + // skip nodes with many fanouts +// if ( Abc_ObjFanoutNum(pNode) > nFaninLimit ) +// return 999; + // get the children + pFanin0 = Abc_ObjFanin0(pNode); + pFanin1 = Abc_ObjFanin1(pNode); + assert( !pFanin0->fMarkB && !pFanin1->fMarkB ); + // count the number of unique grandchildren that will be included + // return infinite cost if this number if more than 1 + if ( Abc_ObjIsCi(pFanin0) && Abc_ObjIsCi(pFanin1) ) + return 999; + // consider the special case when a non-CI fanin can be dropped + if ( !Abc_ObjIsCi(pFanin0) && Abc_ObjFanin0(pFanin0)->fMarkB && Abc_ObjFanin1(pFanin0)->fMarkB ) + { + *ppLeafToAdd = pFanin1; + *pNodeToMark1 = pFanin0; + *pNodeToMark2 = NULL; + return 1; + } + if ( !Abc_ObjIsCi(pFanin1) && Abc_ObjFanin0(pFanin1)->fMarkB && Abc_ObjFanin1(pFanin1)->fMarkB ) + { + *ppLeafToAdd = pFanin0; + *pNodeToMark1 = pFanin1; + *pNodeToMark2 = NULL; + return 1; + } + + // make the first node CI if any + if ( Abc_ObjIsCi(pFanin1) ) + pTemp = pFanin0, pFanin0 = pFanin1, pFanin1 = pTemp; + // consider the first node + pGrandToAdd = NULL; + if ( Abc_ObjIsCi(pFanin0) ) + { + *pNodeToMark1 = NULL; + pGrandToAdd = pFanin0; + } + else + { + *pNodeToMark1 = pFanin0; + pGrand = Abc_ObjFanin0(pFanin0); + if ( !pGrand->fMarkB ) + { + if ( pGrandToAdd && pGrandToAdd != pGrand ) + return 999; + pGrandToAdd = pGrand; + } + pGrand = Abc_ObjFanin1(pFanin0); + if ( !pGrand->fMarkB ) + { + if ( pGrandToAdd && pGrandToAdd != pGrand ) + return 999; + pGrandToAdd = pGrand; + } + } + // consider the second node + *pNodeToMark2 = pFanin1; + pGrand = Abc_ObjFanin0(pFanin1); + if ( !pGrand->fMarkB ) + { + if ( pGrandToAdd && pGrandToAdd != pGrand ) + return 999; + pGrandToAdd = pGrand; + } + pGrand = Abc_ObjFanin1(pFanin1); + if ( !pGrand->fMarkB ) + { + if ( pGrandToAdd && pGrandToAdd != pGrand ) + return 999; + pGrandToAdd = pGrand; + } + assert( pGrandToAdd != NULL ); + *ppLeafToAdd = pGrandToAdd; + return 1; +} + + +/**Function************************************************************* + + Synopsis [Finds a fanin-limited, reconvergence-driven cut for the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Abc_NodeFindCut( Abc_ManCut_t * p, Abc_Obj_t * pRoot, bool fContain ) +{ + Abc_Obj_t * pNode; + int i; + + assert( !Abc_ObjIsComplement(pRoot) ); + assert( Abc_ObjIsNode(pRoot) ); + + // start the visited nodes and mark them + Vec_PtrClear( p->vVisited ); + Vec_PtrPush( p->vVisited, pRoot ); + Vec_PtrPush( p->vVisited, Abc_ObjFanin0(pRoot) ); + Vec_PtrPush( p->vVisited, Abc_ObjFanin1(pRoot) ); + pRoot->fMarkB = 1; + Abc_ObjFanin0(pRoot)->fMarkB = 1; + Abc_ObjFanin1(pRoot)->fMarkB = 1; + + // start the cut + Vec_PtrClear( p->vNodeLeaves ); + Vec_PtrPush( p->vNodeLeaves, Abc_ObjFanin0(pRoot) ); + Vec_PtrPush( p->vNodeLeaves, Abc_ObjFanin1(pRoot) ); + + // compute the cut + while ( Abc_NodeBuildCutLevelOne_int( p->vVisited, p->vNodeLeaves, p->nNodeSizeMax, p->nNodeFanStop ) ); + assert( Vec_PtrSize(p->vNodeLeaves) <= p->nNodeSizeMax ); + + // return if containing cut is not requested + if ( !fContain ) + { + // unmark both fMarkA and fMarkB in tbe TFI + Abc_NodesUnmarkB( p->vVisited ); + return p->vNodeLeaves; + } + +//printf( "\n\n\n" ); + // compute the containing cut + assert( p->nNodeSizeMax < p->nConeSizeMax ); + // copy the current boundary + Vec_PtrClear( p->vConeLeaves ); + Vec_PtrForEachEntry( p->vNodeLeaves, pNode, i ) + Vec_PtrPush( p->vConeLeaves, pNode ); + // compute the containing cut + while ( Abc_NodeBuildCutLevelOne_int( p->vVisited, p->vConeLeaves, p->nConeSizeMax, p->nConeFanStop ) ); + assert( Vec_PtrSize(p->vConeLeaves) <= p->nConeSizeMax ); + // unmark TFI using fMarkA and fMarkB + Abc_NodesUnmarkB( p->vVisited ); + return p->vNodeLeaves; +} + +/**Function************************************************************* + + Synopsis [Builds reconvergence-driven cut by changing one leaf at a time.] + + Description [This procedure looks at the current leaves and tries to change + one leaf at a time in such a way that the cut grows as little as possible. + In evaluating the fanins, this procedure looks only at their immediate + predecessors (this is why it is called a one-level construction procedure).] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeBuildCutLevelOne_int( Vec_Ptr_t * vVisited, Vec_Ptr_t * vLeaves, int nSizeLimit, int nFaninLimit ) +{ + Abc_Obj_t * pNode, * pFaninBest, * pNext; + int CostBest, CostCur, i; + // find the best fanin + CostBest = 100; + pFaninBest = NULL; +//printf( "Evaluating fanins of the cut:\n" ); + Vec_PtrForEachEntry( vLeaves, pNode, i ) + { + CostCur = Abc_NodeGetLeafCostOne( pNode, nFaninLimit ); +//printf( " Fanin %s has cost %d.\n", Abc_ObjName(pNode), CostCur ); + if ( CostBest > CostCur ) + { + CostBest = CostCur; + pFaninBest = pNode; + } + if ( CostBest == 0 ) + break; + } + if ( pFaninBest == NULL ) + return 0; +// return Abc_NodeBuildCutLevelTwo_int( vVisited, vLeaves, nFaninLimit ); + + assert( CostBest < 3 ); + if ( vLeaves->nSize - 1 + CostBest > nSizeLimit ) + return 0; +// return Abc_NodeBuildCutLevelTwo_int( vVisited, vLeaves, nFaninLimit ); + + assert( Abc_ObjIsNode(pFaninBest) ); + // remove the node from the array + Vec_PtrRemove( vLeaves, pFaninBest ); +//printf( "Removing fanin %s.\n", Abc_ObjName(pFaninBest) ); + + // add the left child to the fanins + pNext = Abc_ObjFanin0(pFaninBest); + if ( !pNext->fMarkB ) + { +//printf( "Adding fanin %s.\n", Abc_ObjName(pNext) ); + pNext->fMarkB = 1; + Vec_PtrPush( vLeaves, pNext ); + Vec_PtrPush( vVisited, pNext ); + } + // add the right child to the fanins + pNext = Abc_ObjFanin1(pFaninBest); + if ( !pNext->fMarkB ) + { +//printf( "Adding fanin %s.\n", Abc_ObjName(pNext) ); + pNext->fMarkB = 1; + Vec_PtrPush( vLeaves, pNext ); + Vec_PtrPush( vVisited, pNext ); + } + assert( vLeaves->nSize <= nSizeLimit ); + // keep doing this + return 1; +} + +/**Function************************************************************* + + Synopsis [Builds reconvergence-driven cut by changing one leaf at a time.] + + Description [This procedure looks at the current leaves and tries to change + one leaf at a time in such a way that the cut grows as little as possible. + In evaluating the fanins, this procedure looks across two levels of fanins + (this is why it is called a two-level construction procedure).] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeBuildCutLevelTwo_int( Vec_Ptr_t * vVisited, Vec_Ptr_t * vLeaves, int nFaninLimit ) +{ + Abc_Obj_t * pNode, * pLeafToAdd, * pNodeToMark1, * pNodeToMark2; + int CostCur, i; + // find the best fanin + Vec_PtrForEachEntry( vLeaves, pNode, i ) + { + CostCur = Abc_NodeGetLeafCostTwo( pNode, nFaninLimit, &pLeafToAdd, &pNodeToMark1, &pNodeToMark2 ); + if ( CostCur < 2 ) + break; + } + if ( CostCur > 2 ) + return 0; + // remove the node from the array + Vec_PtrRemove( vLeaves, pNode ); + // add the node to the leaves + if ( pLeafToAdd ) + { + assert( !pLeafToAdd->fMarkB ); + pLeafToAdd->fMarkB = 1; + Vec_PtrPush( vLeaves, pLeafToAdd ); + Vec_PtrPush( vVisited, pLeafToAdd ); + } + // mark the other nodes + if ( pNodeToMark1 ) + { + assert( !pNodeToMark1->fMarkB ); + pNodeToMark1->fMarkB = 1; + Vec_PtrPush( vVisited, pNodeToMark1 ); + } + if ( pNodeToMark2 ) + { + assert( !pNodeToMark2->fMarkB ); + pNodeToMark2->fMarkB = 1; + Vec_PtrPush( vVisited, pNodeToMark2 ); + } + // keep doing this + return 1; +} + + +/**Function************************************************************* + + Synopsis [Get the nodes contained in the cut.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeConeCollect( Abc_Obj_t ** ppRoots, int nRoots, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vVisited, int fIncludeFanins ) +{ + Abc_Obj_t * pTemp; + int i; + // mark the fanins of the cone + Abc_NodesMark( vLeaves ); + // collect the nodes in the DFS order + Vec_PtrClear( vVisited ); + // add the fanins + if ( fIncludeFanins ) + Vec_PtrForEachEntry( vLeaves, pTemp, i ) + Vec_PtrPush( vVisited, pTemp ); + // add other nodes + for ( i = 0; i < nRoots; i++ ) + Abc_NodeConeMarkCollect_rec( ppRoots[i], vVisited ); + // unmark both sets + Abc_NodesUnmark( vLeaves ); + Abc_NodesUnmark( vVisited ); +} + +/**Function************************************************************* + + Synopsis [Marks the TFI cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeConeMarkCollect_rec( Abc_Obj_t * pNode, Vec_Ptr_t * vVisited ) +{ + if ( pNode->fMarkA == 1 ) + return; + // visit transitive fanin + if ( Abc_ObjIsNode(pNode) ) + { + Abc_NodeConeMarkCollect_rec( Abc_ObjFanin0(pNode), vVisited ); + Abc_NodeConeMarkCollect_rec( Abc_ObjFanin1(pNode), vVisited ); + } + assert( pNode->fMarkA == 0 ); + pNode->fMarkA = 1; + Vec_PtrPush( vVisited, pNode ); +} + +/**Function************************************************************* + + Synopsis [Returns BDD representing the logic function of the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NodeConeBdd( DdManager * dd, DdNode ** pbVars, Abc_Obj_t * pNode, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vVisited ) +{ + DdNode * bFunc0, * bFunc1, * bFunc; + int i; + // get the nodes in the cut without fanins in the DFS order + Abc_NodeConeCollect( &pNode, 1, vLeaves, vVisited, 0 ); + // set the elementary BDDs + Vec_PtrForEachEntry( vLeaves, pNode, i ) + pNode->pCopy = (Abc_Obj_t *)pbVars[i]; + // compute the BDDs for the collected nodes + Vec_PtrForEachEntry( vVisited, pNode, i ) + { + bFunc0 = Cudd_NotCond( Abc_ObjFanin0(pNode)->pCopy, Abc_ObjFaninC0(pNode) ); + bFunc1 = Cudd_NotCond( Abc_ObjFanin1(pNode)->pCopy, Abc_ObjFaninC1(pNode) ); + bFunc = Cudd_bddAnd( dd, bFunc0, bFunc1 ); Cudd_Ref( bFunc ); + pNode->pCopy = (Abc_Obj_t *)bFunc; + } + Cudd_Ref( bFunc ); + // dereference the intermediate ones + Vec_PtrForEachEntry( vVisited, pNode, i ) + Cudd_RecursiveDeref( dd, (DdNode *)pNode->pCopy ); + Cudd_Deref( bFunc ); + return bFunc; +} + +/**Function************************************************************* + + Synopsis [Returns BDD representing the transition relation of the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NodeConeDcs( DdManager * dd, DdNode ** pbVarsX, DdNode ** pbVarsY, Vec_Ptr_t * vLeaves, Vec_Ptr_t * vRoots, Vec_Ptr_t * vVisited ) +{ + DdNode * bFunc0, * bFunc1, * bFunc, * bTrans, * bTemp, * bCube, * bResult; + Abc_Obj_t * pNode; + int i; + // get the nodes in the cut without fanins in the DFS order + Abc_NodeConeCollect( (Abc_Obj_t **)vRoots->pArray, vRoots->nSize, vLeaves, vVisited, 0 ); + // set the elementary BDDs + Vec_PtrForEachEntry( vLeaves, pNode, i ) + pNode->pCopy = (Abc_Obj_t *)pbVarsX[i]; + // compute the BDDs for the collected nodes + Vec_PtrForEachEntry( vVisited, pNode, i ) + { + bFunc0 = Cudd_NotCond( Abc_ObjFanin0(pNode)->pCopy, Abc_ObjFaninC0(pNode) ); + bFunc1 = Cudd_NotCond( Abc_ObjFanin1(pNode)->pCopy, Abc_ObjFaninC1(pNode) ); + bFunc = Cudd_bddAnd( dd, bFunc0, bFunc1 ); Cudd_Ref( bFunc ); + pNode->pCopy = (Abc_Obj_t *)bFunc; + } + // compute the transition relation of the cone + bTrans = b1; Cudd_Ref( bTrans ); + Vec_PtrForEachEntry( vRoots, pNode, i ) + { + bFunc = Cudd_bddXnor( dd, (DdNode *)pNode->pCopy, pbVarsY[i] ); Cudd_Ref( bFunc ); + bTrans = Cudd_bddAnd( dd, bTemp = bTrans, bFunc ); Cudd_Ref( bTrans ); + Cudd_RecursiveDeref( dd, bTemp ); + Cudd_RecursiveDeref( dd, bFunc ); + } + // dereference the intermediate ones + Vec_PtrForEachEntry( vVisited, pNode, i ) + Cudd_RecursiveDeref( dd, (DdNode *)pNode->pCopy ); + // compute don't-cares + bCube = Extra_bddComputeRangeCube( dd, vRoots->nSize, vRoots->nSize + vLeaves->nSize ); Cudd_Ref( bCube ); + bResult = Cudd_bddExistAbstract( dd, bTrans, bCube ); Cudd_Ref( bResult ); + bResult = Cudd_Not( bResult ); + Cudd_RecursiveDeref( dd, bCube ); + Cudd_RecursiveDeref( dd, bTrans ); + Cudd_Deref( bResult ); + return bResult; +} + +/**Function************************************************************* + + Synopsis [Starts the resynthesis manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_ManCut_t * Abc_NtkManCutStart( int nNodeSizeMax, int nConeSizeMax, int nNodeFanStop, int nConeFanStop ) +{ + Abc_ManCut_t * p; + p = ALLOC( Abc_ManCut_t, 1 ); + memset( p, 0, sizeof(Abc_ManCut_t) ); + p->vNodeLeaves = Vec_PtrAlloc( 100 ); + p->vConeLeaves = Vec_PtrAlloc( 100 ); + p->vVisited = Vec_PtrAlloc( 100 ); + p->vLevels = Vec_VecAlloc( 100 ); + p->vNodesTfo = Vec_PtrAlloc( 100 ); + p->nNodeSizeMax = nNodeSizeMax; + p->nConeSizeMax = nConeSizeMax; + p->nNodeFanStop = nNodeFanStop; + p->nConeFanStop = nConeFanStop; + return p; +} + +/**Function************************************************************* + + Synopsis [Stops the resynthesis manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkManCutStop( Abc_ManCut_t * p ) +{ + Vec_PtrFree( p->vNodeLeaves ); + Vec_PtrFree( p->vConeLeaves ); + Vec_PtrFree( p->vVisited ); + Vec_VecFree( p->vLevels ); + Vec_PtrFree( p->vNodesTfo ); + free( p ); +} + +/**Function************************************************************* + + Synopsis [Returns the leaves of the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Abc_NtkManCutReadCutLarge( Abc_ManCut_t * p ) +{ + return p->vConeLeaves; +} + +/**Function************************************************************* + + Synopsis [Returns the leaves of the cone.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Abc_NtkManCutReadVisited( Abc_ManCut_t * p ) +{ + return p->vVisited; +} + + + +/**Function************************************************************* + + Synopsis [Collects the TFO of the cut in the topological order.] + + Description [TFO of the cut is defined as a set of nodes, for which the cut + is a cut, that is, every path from the collected nodes to the CIs goes through + a node in the cut. The nodes are collected if their level does not exceed + the given number (LevelMax). The nodes are returned in the topological order. + If the root node is given, its MFFC is marked, so that the collected nodes + do not contain any nodes in the MFFC.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Vec_Ptr_t * Abc_NodeCollectTfoCands( Abc_ManCut_t * p, Abc_Obj_t * pRoot, Vec_Ptr_t * vLeaves, int LevelMax ) +{ + Abc_Ntk_t * pNtk = pRoot->pNtk; + Vec_Ptr_t * vVec; + Abc_Obj_t * pNode, * pFanout; + int i, k, v, LevelMin; + assert( Abc_NtkIsStrash(pNtk) ); + + // assuming that the structure is clean + Vec_VecForEachLevel( p->vLevels, vVec, i ) + assert( vVec->nSize == 0 ); + + // put fanins into the structure while labeling them + Abc_NtkIncrementTravId( pNtk ); + LevelMin = -1; + Vec_PtrForEachEntry( vLeaves, pNode, i ) + { + if ( pNode->Level > (unsigned)LevelMax ) + continue; + Abc_NodeSetTravIdCurrent( pNode ); + Vec_VecPush( p->vLevels, pNode->Level, pNode ); + if ( LevelMin < (int)pNode->Level ) + LevelMin = pNode->Level; + } + assert( LevelMin >= 0 ); + + // mark MFFC + if ( pRoot ) + Abc_NodeMffcLabel( pRoot ); + + // go through the levels up + Vec_PtrClear( p->vNodesTfo ); + Vec_VecForEachEntryStart( p->vLevels, pNode, i, k, LevelMin ) + { + if ( i > LevelMax ) + break; + // if the node is not marked, it is not a fanin + if ( !Abc_NodeIsTravIdCurrent(pNode) ) + { + // check if it belongs to the TFO + if ( !Abc_NodeIsTravIdCurrent(Abc_ObjFanin0(pNode)) || + !Abc_NodeIsTravIdCurrent(Abc_ObjFanin1(pNode)) ) + continue; + // save the node in the TFO and label it + Vec_PtrPush( p->vNodesTfo, pNode ); + Abc_NodeSetTravIdCurrent( pNode ); + } + // go through the fanouts and add them to the structure if they meet the conditions + Abc_ObjForEachFanout( pNode, pFanout, v ) + { + // skip if fanout is a CO or its level exceeds + if ( Abc_ObjIsCo(pFanout) || pFanout->Level > (unsigned)LevelMax ) + continue; + // skip if it is already added or if it is in MFFC + if ( Abc_NodeIsTravIdCurrent(pFanout) ) + continue; + // add it to the structure but do not mark it (until tested later) + Vec_VecPushUnique( p->vLevels, pFanout->Level, pFanout ); + } + } + + // clear the levelized structure + Vec_VecForEachLevelStart( p->vLevels, vVec, i, LevelMin ) + { + if ( i > LevelMax ) + break; + Vec_PtrClear( vVec ); + } + return p->vNodesTfo; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcRefactor.c b/src/base/abci/abcRefactor.c new file mode 100644 index 00000000..791d2d53 --- /dev/null +++ b/src/base/abci/abcRefactor.c @@ -0,0 +1,354 @@ +/**CFile**************************************************************** + + FileName [abcResRef.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Resynthesis based on refactoring.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcResRef.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "dec.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +typedef struct Abc_ManRef_t_ Abc_ManRef_t; +struct Abc_ManRef_t_ +{ + // user specified parameters + int nNodeSizeMax; // the limit on the size of the supernode + int nConeSizeMax; // the limit on the size of the containing cone + int fVerbose; // the verbosity flag + // internal data structures + DdManager * dd; // the BDD manager + Vec_Str_t * vCube; // temporary + Vec_Int_t * vForm; // temporary + Vec_Ptr_t * vVisited; // temporary + Vec_Ptr_t * vLeaves; // temporary + // node statistics + int nLastGain; + int nNodesConsidered; + int nNodesRefactored; + int nNodesGained; + // runtime statistics + int timeCut; + int timeBdd; + int timeDcs; + int timeSop; + int timeFact; + int timeEval; + int timeRes; + int timeNtk; + int timeTotal; +}; + +static void Abc_NtkManRefPrintStats( Abc_ManRef_t * p ); +static Abc_ManRef_t * Abc_NtkManRefStart( int nNodeSizeMax, int nConeSizeMax, bool fUseDcs, bool fVerbose ); +static void Abc_NtkManRefStop( Abc_ManRef_t * p ); +static Dec_Graph_t * Abc_NodeRefactor( Abc_ManRef_t * p, Abc_Obj_t * pNode, Vec_Ptr_t * vFanins, bool fUseZeros, bool fUseDcs, bool fVerbose ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Performs incremental resynthesis of the AIG.] + + Description [Starting from each node, computes a reconvergence-driven cut, + derives BDD of the cut function, constructs ISOP, factors the ISOP, + and replaces the current implementation of the MFFC of the node by the + new factored form, if the number of AIG nodes is reduced and the total + number of levels of the AIG network is not increated. Returns the + number of AIG nodes saved.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkRefactor( Abc_Ntk_t * pNtk, int nNodeSizeMax, int nConeSizeMax, bool fUseZeros, bool fUseDcs, bool fVerbose ) +{ + int fCheck = 1; + ProgressBar * pProgress; + Abc_ManRef_t * pManRef; + Abc_ManCut_t * pManCut; + Dec_Graph_t * pFForm; + Vec_Ptr_t * vFanins; + Abc_Obj_t * pNode; + int clk, clkStart = clock(); + int i, nNodes; + + assert( Abc_NtkIsStrash(pNtk) ); + // cleanup the AIG + Abc_AigCleanup(pNtk->pManFunc); + // start the managers + pManCut = Abc_NtkManCutStart( nNodeSizeMax, nConeSizeMax, 2, 1000 ); + pManRef = Abc_NtkManRefStart( nNodeSizeMax, nConeSizeMax, fUseDcs, fVerbose ); + pManRef->vLeaves = Abc_NtkManCutReadCutLarge( pManCut ); + Abc_NtkStartReverseLevels( pNtk ); + + // resynthesize each node once + nNodes = Abc_NtkObjNumMax(pNtk); + pProgress = Extra_ProgressBarStart( stdout, nNodes ); + Abc_NtkForEachNode( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // skip the constant node + if ( Abc_NodeIsConst(pNode) ) + continue; + // stop if all nodes have been tried once + if ( i >= nNodes ) + break; + // compute a reconvergence-driven cut +clk = clock(); + vFanins = Abc_NodeFindCut( pManCut, pNode, fUseDcs ); +pManRef->timeCut += clock() - clk; + // evaluate this cut +clk = clock(); + pFForm = Abc_NodeRefactor( pManRef, pNode, vFanins, fUseZeros, fUseDcs, fVerbose ); +pManRef->timeRes += clock() - clk; + if ( pFForm == NULL ) + continue; + // acceptable replacement found, update the graph +clk = clock(); + Dec_GraphUpdateNetwork( pNode, pFForm, pManRef->nLastGain ); +pManRef->timeNtk += clock() - clk; + Dec_GraphFree( pFForm ); + } + Extra_ProgressBarStop( pProgress ); +pManRef->timeTotal = clock() - clkStart; + + // print statistics of the manager + if ( fVerbose ) + Abc_NtkManRefPrintStats( pManRef ); + // delete the managers + Abc_NtkManCutStop( pManCut ); + Abc_NtkManRefStop( pManRef ); + Abc_NtkStopReverseLevels( pNtk ); + // check + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + { + printf( "Abc_NtkRefactor: The network check has failed.\n" ); + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Resynthesizes the node using refactoring.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Dec_Graph_t * Abc_NodeRefactor( Abc_ManRef_t * p, Abc_Obj_t * pNode, Vec_Ptr_t * vFanins, bool fUseZeros, bool fUseDcs, bool fVerbose ) +{ + int fVeryVerbose = 0; + Abc_Obj_t * pFanin; + Dec_Graph_t * pFForm; + DdNode * bNodeFunc; + int nNodesSaved, nNodesAdded, i, clk; + char * pSop; + + p->nNodesConsidered++; + + // get the function of the cut +clk = clock(); + bNodeFunc = Abc_NodeConeBdd( p->dd, p->dd->vars, pNode, vFanins, p->vVisited ); Cudd_Ref( bNodeFunc ); +p->timeBdd += clock() - clk; + + // if don't-care are used, transform the function into ISOP + if ( fUseDcs ) + { + DdNode * bNodeDc, * bNodeOn, * bNodeOnDc; + int nMints, nMintsDc; +clk = clock(); + // get the don't-cares + bNodeDc = Abc_NodeConeDcs( p->dd, p->dd->vars + vFanins->nSize, p->dd->vars, p->vLeaves, vFanins, p->vVisited ); Cudd_Ref( bNodeDc ); + nMints = (1 << vFanins->nSize); + nMintsDc = (int)Cudd_CountMinterm( p->dd, bNodeDc, vFanins->nSize ); +// printf( "Percentage of minterms = %5.2f.\n", 100.0 * nMintsDc / nMints ); + // get the ISF + bNodeOn = Cudd_bddAnd( p->dd, bNodeFunc, Cudd_Not(bNodeDc) ); Cudd_Ref( bNodeOn ); + bNodeOnDc = Cudd_bddOr ( p->dd, bNodeFunc, bNodeDc ); Cudd_Ref( bNodeOnDc ); + Cudd_RecursiveDeref( p->dd, bNodeFunc ); + Cudd_RecursiveDeref( p->dd, bNodeDc ); + // get the ISOP + bNodeFunc = Cudd_bddIsop( p->dd, bNodeOn, bNodeOnDc ); Cudd_Ref( bNodeFunc ); + Cudd_RecursiveDeref( p->dd, bNodeOn ); + Cudd_RecursiveDeref( p->dd, bNodeOnDc ); +p->timeDcs += clock() - clk; + } + + // always accept the case of constant node + if ( Cudd_IsConstant(bNodeFunc) ) + { + p->nLastGain = Abc_NodeMffcSize( pNode ); + p->nNodesGained += p->nLastGain; + p->nNodesRefactored++; + Cudd_RecursiveDeref( p->dd, bNodeFunc ); + if ( Cudd_IsComplement(bNodeFunc) ) + return Dec_GraphCreateConst0(); + return Dec_GraphCreateConst1(); + } + + // get the SOP of the cut +clk = clock(); + pSop = Abc_ConvertBddToSop( NULL, p->dd, bNodeFunc, bNodeFunc, vFanins->nSize, p->vCube, -1 ); +p->timeSop += clock() - clk; + + // get the factored form +clk = clock(); + pFForm = Dec_Factor( pSop ); + free( pSop ); +p->timeFact += clock() - clk; + + // mark the fanin boundary + // (can mark only essential fanins, belonging to bNodeFunc!) + Vec_PtrForEachEntry( vFanins, pFanin, i ) + pFanin->vFanouts.nSize++; + // label MFFC with current traversal ID + Abc_NtkIncrementTravId( pNode->pNtk ); + nNodesSaved = Abc_NodeMffcLabel( pNode ); + // unmark the fanin boundary and set the fanins as leaves in the form + Vec_PtrForEachEntry( vFanins, pFanin, i ) + { + pFanin->vFanouts.nSize--; + Dec_GraphNode(pFForm, i)->pFunc = pFanin; + } + + // detect how many new nodes will be added (while taking into account reused nodes) +clk = clock(); + nNodesAdded = Dec_GraphToNetworkCount( pNode, pFForm, nNodesSaved, Abc_NodeReadRequiredLevel(pNode) ); +p->timeEval += clock() - clk; + // quit if there is no improvement + if ( nNodesAdded == -1 || nNodesAdded == nNodesSaved && !fUseZeros ) + { + Cudd_RecursiveDeref( p->dd, bNodeFunc ); + Dec_GraphFree( pFForm ); + return NULL; + } + + // compute the total gain in the number of nodes + p->nLastGain = nNodesSaved - nNodesAdded; + p->nNodesGained += p->nLastGain; + p->nNodesRefactored++; + + // report the progress + if ( fVeryVerbose ) + { + printf( "Node %6s : ", Abc_ObjName(pNode) ); + printf( "Cone = %2d. ", vFanins->nSize ); + printf( "BDD = %2d. ", Cudd_DagSize(bNodeFunc) ); + printf( "FF = %2d. ", 1 + Dec_GraphNodeNum(pFForm) ); + printf( "MFFC = %2d. ", nNodesSaved ); + printf( "Add = %2d. ", nNodesAdded ); + printf( "GAIN = %2d. ", p->nLastGain ); + printf( "\n" ); + } + Cudd_RecursiveDeref( p->dd, bNodeFunc ); + return pFForm; +} + + +/**Function************************************************************* + + Synopsis [Starts the resynthesis manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_ManRef_t * Abc_NtkManRefStart( int nNodeSizeMax, int nConeSizeMax, bool fUseDcs, bool fVerbose ) +{ + Abc_ManRef_t * p; + p = ALLOC( Abc_ManRef_t, 1 ); + memset( p, 0, sizeof(Abc_ManRef_t) ); + p->vCube = Vec_StrAlloc( 100 ); + p->vVisited = Vec_PtrAlloc( 100 ); + p->nNodeSizeMax = nNodeSizeMax; + p->nConeSizeMax = nConeSizeMax; + p->fVerbose = fVerbose; + // start the BDD manager + if ( fUseDcs ) + p->dd = Cudd_Init( p->nNodeSizeMax + p->nConeSizeMax, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 ); + else + p->dd = Cudd_Init( p->nNodeSizeMax, 0, CUDD_UNIQUE_SLOTS, CUDD_CACHE_SLOTS, 0 ); + Cudd_zddVarsFromBddVars( p->dd, 2 ); + return p; +} + +/**Function************************************************************* + + Synopsis [Stops the resynthesis manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkManRefStop( Abc_ManRef_t * p ) +{ + Extra_StopManager( p->dd ); + Vec_PtrFree( p->vVisited ); + Vec_StrFree( p->vCube ); + free( p ); +} + +/**Function************************************************************* + + Synopsis [Stops the resynthesis manager.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkManRefPrintStats( Abc_ManRef_t * p ) +{ + printf( "Refactoring statistics:\n" ); + printf( "Nodes considered = %8d.\n", p->nNodesConsidered ); + printf( "Nodes refactored = %8d.\n", p->nNodesRefactored ); + printf( "Calculated gain = %8d.\n", p->nNodesGained ); + PRT( "Cuts ", p->timeCut ); + PRT( "Resynthesis", p->timeRes ); + PRT( " BDD ", p->timeBdd ); + PRT( " DCs ", p->timeDcs ); + PRT( " SOP ", p->timeSop ); + PRT( " FF ", p->timeFact ); + PRT( " Eval ", p->timeEval ); + PRT( "AIG update ", p->timeNtk ); + PRT( "TOTAL ", p->timeTotal ); +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcRenode.c b/src/base/abci/abcRenode.c new file mode 100644 index 00000000..c77c0d70 --- /dev/null +++ b/src/base/abci/abcRenode.c @@ -0,0 +1,609 @@ +/**CFile**************************************************************** + + FileName [abcRenode.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Procedures which transform an AIG into the network of nodes.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcRenode.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static void Abc_NtkRenodeInt( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ); +static Abc_Obj_t * Abc_NtkRenode_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNodeOld ); + +static DdNode * Abc_NtkRenodeDeriveBdd_rec( DdManager * dd, Abc_Obj_t * pNodeOld, Vec_Ptr_t * vFanins ); + +static void Abc_NtkRenodeSetBounds( Abc_Ntk_t * pNtk, int nThresh, int nFaninMax ); +static void Abc_NtkRenodeSetBoundsCnf( Abc_Ntk_t * pNtk ); +static void Abc_NtkRenodeSetBoundsMulti( Abc_Ntk_t * pNtk, int nThresh ); +static void Abc_NtkRenodeSetBoundsSimple( Abc_Ntk_t * pNtk ); +static void Abc_NtkRenodeCone( Abc_Obj_t * pNode, Vec_Ptr_t * vCone ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Transforms the AIG into nodes.] + + Description [Threhold is the max number of nodes duplicated at a node.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkRenode( Abc_Ntk_t * pNtk, int nThresh, int nFaninMax, int fCnf, int fMulti, int fSimple ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkNew; + + assert( Abc_NtkIsStrash(pNtk) ); + assert( nThresh >= 0 ); + assert( nFaninMax > 1 ); + + // print a warning about choice nodes + if ( Abc_NtkGetChoiceNum( pNtk ) ) + printf( "Warning: The choice nodes in the AIG are removed by renoding.\n" ); + + // define the boundary + if ( fCnf ) + Abc_NtkRenodeSetBoundsCnf( pNtk ); + else if ( fMulti ) + Abc_NtkRenodeSetBoundsMulti( pNtk, nThresh ); + else if ( fSimple ) + Abc_NtkRenodeSetBoundsSimple( pNtk ); + else + Abc_NtkRenodeSetBounds( pNtk, nThresh, nFaninMax ); + + // perform renoding for this boundary + pNtkNew = Abc_NtkStartFrom( pNtk, ABC_TYPE_LOGIC, ABC_FUNC_BDD ); + Abc_NtkRenodeInt( pNtk, pNtkNew ); + Abc_NtkFinalize( pNtk, pNtkNew ); + + // make the network minimum base + Abc_NtkMinimumBase( pNtkNew ); + + // fix the problem with complemented and duplicated CO edges + Abc_NtkLogicMakeSimpleCos( pNtkNew, 0 ); + + // report the number of CNF objects + if ( fCnf ) + { +// int nClauses = Abc_NtkGetClauseNum(pNtkNew) + 2*Abc_NtkPoNum(pNtkNew) + 2*Abc_NtkLatchNum(pNtkNew); +// printf( "CNF variables = %d. CNF clauses = %d.\n", Abc_NtkNodeNum(pNtkNew), nClauses ); + } +//printf( "Maximum fanin = %d.\n", Abc_NtkGetFaninMax(pNtkNew) ); + + // make sure everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkNew ) ) + { + printf( "Abc_NtkRenode: The network check has failed.\n" ); + Abc_NtkDelete( pNtkNew ); + return NULL; + } + return pNtkNew; +} + +/**Function************************************************************* + + Synopsis [Transforms the AIG into nodes.] + + Description [Threhold is the max number of nodes duplicated at a node.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkRenodeInt( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew ) +{ + ProgressBar * pProgress; + Abc_Obj_t * pNode, * pConst1, * pNodeNew; + int i; + + // set the constant node + pConst1 = Abc_AigConst1(pNtk->pManFunc); + if ( Abc_ObjFanoutNum(pConst1) > 0 ) + { + pNodeNew = Abc_NtkCreateNode( pNtkNew ); + pNodeNew->pData = Cudd_ReadOne( pNtkNew->pManFunc ); Cudd_Ref( pNodeNew->pData ); + pConst1->pCopy = pNodeNew; + } + + // perform renoding for POs + pProgress = Extra_ProgressBarStart( stdout, Abc_NtkCoNum(pNtk) ); + Abc_NtkForEachCo( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + if ( Abc_ObjIsCi(Abc_ObjFanin0(pNode)) ) + continue; + Abc_NtkRenode_rec( pNtkNew, Abc_ObjFanin0(pNode) ); + } + Extra_ProgressBarStop( pProgress ); + + // clean the boundaries and data field in the old network + Abc_NtkForEachObj( pNtk, pNode, i ) + { + pNode->fMarkA = 0; + pNode->pData = NULL; + } +} + +/**Function************************************************************* + + Synopsis [Find the best multi-input node rooted at the given node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NtkRenode_rec( Abc_Ntk_t * pNtkNew, Abc_Obj_t * pNodeOld ) +{ + Vec_Ptr_t * vCone; + Abc_Obj_t * pNodeNew; + int i; + + assert( !Abc_ObjIsComplement(pNodeOld) ); + // return if the result if known + if ( pNodeOld->pCopy ) + return pNodeOld->pCopy; + assert( Abc_ObjIsNode(pNodeOld) ); + assert( !Abc_NodeIsConst(pNodeOld) ); + assert( pNodeOld->fMarkA ); + + // collect the renoding cone + vCone = Vec_PtrAlloc( 10 ); + Abc_NtkRenodeCone( pNodeOld, vCone ); + + // create a new node + pNodeNew = Abc_NtkCreateNode( pNtkNew ); + for ( i = 0; i < vCone->nSize; i++ ) + Abc_ObjAddFanin( pNodeNew, Abc_NtkRenode_rec(pNtkNew, vCone->pArray[i]) ); + + // derive the function of this node + pNodeNew->pData = Abc_NtkRenodeDeriveBdd( pNtkNew->pManFunc, pNodeOld, vCone ); + Cudd_Ref( pNodeNew->pData ); + Vec_PtrFree( vCone ); + + // remember the node + pNodeOld->pCopy = pNodeNew; + return pNodeOld->pCopy; +} + + +/**Function************************************************************* + + Synopsis [Derives the local BDD of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NtkRenodeDeriveBdd( DdManager * dd, Abc_Obj_t * pNodeOld, Vec_Ptr_t * vFaninsOld ) +{ + Abc_Obj_t * pFaninOld; + DdNode * bFunc; + int i; + assert( !Abc_NodeIsConst(pNodeOld) ); + assert( Abc_ObjIsNode(pNodeOld) ); + // set the elementary BDD variables for the input nodes + for ( i = 0; i < vFaninsOld->nSize; i++ ) + { + pFaninOld = vFaninsOld->pArray[i]; + pFaninOld->pData = Cudd_bddIthVar( dd, i ); Cudd_Ref( pFaninOld->pData ); + pFaninOld->fMarkC = 1; + } + // call the recursive BDD computation + bFunc = Abc_NtkRenodeDeriveBdd_rec( dd, pNodeOld, vFaninsOld ); Cudd_Ref( bFunc ); + // dereference the intermediate nodes + for ( i = 0; i < vFaninsOld->nSize; i++ ) + { + pFaninOld = vFaninsOld->pArray[i]; + Cudd_RecursiveDeref( dd, pFaninOld->pData ); + pFaninOld->fMarkC = 0; + } + Cudd_Deref( bFunc ); + return bFunc; +} + +/**Function************************************************************* + + Synopsis [Derives the local BDD of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NtkRenodeDeriveBdd_rec( DdManager * dd, Abc_Obj_t * pNode, Vec_Ptr_t * vFanins ) +{ + DdNode * bFunc, * bFunc0, * bFunc1; + assert( !Abc_ObjIsComplement(pNode) ); + // if the result is available return + if ( pNode->fMarkC ) + { + assert( pNode->pData ); // network has a cycle + return pNode->pData; + } + // mark the node as visited + pNode->fMarkC = 1; + Vec_PtrPush( vFanins, pNode ); + // compute the result for both branches + bFunc0 = Abc_NtkRenodeDeriveBdd_rec( dd, Abc_ObjFanin(pNode,0), vFanins ); Cudd_Ref( bFunc0 ); + bFunc1 = Abc_NtkRenodeDeriveBdd_rec( dd, Abc_ObjFanin(pNode,1), vFanins ); Cudd_Ref( bFunc1 ); + bFunc0 = Cudd_NotCond( bFunc0, Abc_ObjFaninC0(pNode) ); + bFunc1 = Cudd_NotCond( bFunc1, Abc_ObjFaninC1(pNode) ); + // get the final result + bFunc = Cudd_bddAnd( dd, bFunc0, bFunc1 ); Cudd_Ref( bFunc ); + Cudd_RecursiveDeref( dd, bFunc0 ); + Cudd_RecursiveDeref( dd, bFunc1 ); + // set the result + pNode->pData = bFunc; + assert( pNode->pData ); + return bFunc; +} + + + +/**Function************************************************************* + + Synopsis [Limits the cones to be no more than the given size.] + + Description [Returns 1 if the last cone was limited. Returns 0 if no changes.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkRenodeLimit_rec( Abc_Obj_t * pNode, Vec_Ptr_t * vCone, int nFaninMax, int fCanStop, int fFirst ) +{ + int nNodes0, nNodes1; + assert( !Abc_ObjIsComplement(pNode) ); + // check if the node should be added to the fanins + if ( !fFirst && (pNode->fMarkA || !Abc_ObjIsNode(pNode)) ) + { + Vec_PtrPushUnique( vCone, pNode ); + return 0; + } + // if we cannot stop in this branch, collect all nodes + if ( !fCanStop ) + { + Abc_NtkRenodeLimit_rec( Abc_ObjFanin(pNode,0), vCone, nFaninMax, 0, 0 ); + Abc_NtkRenodeLimit_rec( Abc_ObjFanin(pNode,1), vCone, nFaninMax, 0, 0 ); + return 0; + } + // if we can stop, try the left branch first, and return if we stopped + assert( vCone->nSize == 0 ); + if ( Abc_NtkRenodeLimit_rec( Abc_ObjFanin(pNode,0), vCone, nFaninMax, 1, 0 ) ) + return 1; + // save the number of nodes in the left branch and call for the right branch + nNodes0 = vCone->nSize; + assert( nNodes0 <= nFaninMax ); + Abc_NtkRenodeLimit_rec( Abc_ObjFanin(pNode,1), vCone, nFaninMax, 0, 0 ); + // check the number of nodes + if ( vCone->nSize <= nFaninMax ) + return 0; + // the number of nodes exceeds the limit + + // get the number of nodes in the right branch + vCone->nSize = 0; + Abc_NtkRenodeLimit_rec( Abc_ObjFanin(pNode,1), vCone, nFaninMax, 0, 0 ); + // if this number exceeds the limit, solve the problem for this branch + if ( vCone->nSize > nFaninMax ) + { + int RetValue; + vCone->nSize = 0; + RetValue = Abc_NtkRenodeLimit_rec( Abc_ObjFanin(pNode,1), vCone, nFaninMax, 1, 0 ); + assert( RetValue == 1 ); + return 1; + } + + nNodes1 = vCone->nSize; + assert( nNodes1 <= nFaninMax ); + if ( nNodes0 >= nNodes1 ) + { // the left branch is larger - cut it + assert( Abc_ObjFanin(pNode,0)->fMarkA == 0 ); + Abc_ObjFanin(pNode,0)->fMarkA = 1; + } + else + { // the right branch is larger - cut it + assert( Abc_ObjFanin(pNode,1)->fMarkA == 0 ); + Abc_ObjFanin(pNode,1)->fMarkA = 1; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Limits the cones to be no more than the given size.] + + Description [Returns 1 if the last cone was limited. Returns 0 if no changes.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkRenodeLimit( Abc_Obj_t * pNode, Vec_Ptr_t * vCone, int nFaninMax ) +{ + vCone->nSize = 0; + return Abc_NtkRenodeLimit_rec( pNode, vCone, nFaninMax, 1, 1 ); +} + +/**Function************************************************************* + + Synopsis [Sets the expansion boundary for multi-input nodes.] + + Description [The boundary includes the set of PIs and all nodes such that + when expanding over the node we duplicate no more than nThresh nodes.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkRenodeSetBounds( Abc_Ntk_t * pNtk, int nThresh, int nFaninMax ) +{ + Vec_Ptr_t * vCone = pNtk->vPtrTemp; + Abc_Obj_t * pNode; + int i, nFanouts, nConeSize; + + // make sure the mark is not set + Abc_NtkForEachObj( pNtk, pNode, i ) + assert( pNode->fMarkA == 0 ); + + // mark the nodes where expansion stops using pNode->fMarkA + Abc_NtkForEachNode( pNtk, pNode, i ) + { + // skip PI/PO nodes + if ( Abc_NodeIsConst(pNode) ) + continue; + // mark the nodes with multiple fanouts + nFanouts = Abc_ObjFanoutNum(pNode); + nConeSize = Abc_NodeMffcSize(pNode); + if ( (nFanouts - 1) * nConeSize > nThresh ) + pNode->fMarkA = 1; + } + + // mark the PO drivers + Abc_NtkForEachCo( pNtk, pNode, i ) + Abc_ObjFanin0(pNode)->fMarkA = 1; + + // make sure the fanin limit is met + Abc_NtkForEachNode( pNtk, pNode, i ) + { + // skip PI/PO nodes + if ( Abc_NodeIsConst(pNode) ) + continue; + if ( pNode->fMarkA == 0 ) + continue; + // continue cutting branches ntil it meets the fanin limit + while ( Abc_NtkRenodeLimit(pNode, vCone, nFaninMax) ); + assert( vCone->nSize <= nFaninMax ); + } +/* + // make sure the fanin limit is met + Abc_NtkForEachNode( pNtk, pNode, i ) + { + // skip PI/PO nodes + if ( Abc_NodeIsConst(pNode) ) + continue; + if ( pNode->fMarkA == 0 ) + continue; + Abc_NtkRenodeCone( pNode, vCone ); + assert( vCone->nSize <= nFaninMax ); + } +*/ +} + +/**Function************************************************************* + + Synopsis [Sets the expansion boundary for conversion into CNF.] + + Description [The boundary includes the set of PIs, the roots of MUXes, + the nodes with multiple fanouts and the nodes with complemented outputs.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkRenodeSetBoundsCnf( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pNode; + int i, nMuxes; + + // make sure the mark is not set + Abc_NtkForEachObj( pNtk, pNode, i ) + assert( pNode->fMarkA == 0 ); + + // mark the nodes where expansion stops using pNode->fMarkA + Abc_NtkForEachNode( pNtk, pNode, i ) + { + // skip PI/PO nodes + if ( Abc_NodeIsConst(pNode) ) + continue; + // mark the nodes with multiple fanouts + if ( Abc_ObjFanoutNum(pNode) > 1 ) + pNode->fMarkA = 1; + // mark the nodes that are roots of MUXes + if ( Abc_NodeIsMuxType( pNode ) ) + { + pNode->fMarkA = 1; + Abc_ObjFanin0( Abc_ObjFanin0(pNode) )->fMarkA = 1; + Abc_ObjFanin0( Abc_ObjFanin1(pNode) )->fMarkA = 1; + Abc_ObjFanin1( Abc_ObjFanin0(pNode) )->fMarkA = 1; + Abc_ObjFanin1( Abc_ObjFanin1(pNode) )->fMarkA = 1; + } + else // mark the complemented edges + { + if ( Abc_ObjFaninC0(pNode) ) + Abc_ObjFanin0(pNode)->fMarkA = 1; + if ( Abc_ObjFaninC1(pNode) ) + Abc_ObjFanin1(pNode)->fMarkA = 1; + } + } + + // mark the PO drivers + Abc_NtkForEachCo( pNtk, pNode, i ) + Abc_ObjFanin0(pNode)->fMarkA = 1; + + // count the number of MUXes + nMuxes = 0; + Abc_NtkForEachNode( pNtk, pNode, i ) + { + // skip PI/PO nodes + if ( Abc_NodeIsConst(pNode) ) + continue; + if ( Abc_NodeIsMuxType(pNode) && + Abc_ObjFanin0(pNode)->fMarkA == 0 && + Abc_ObjFanin1(pNode)->fMarkA == 0 ) + nMuxes++; + } + printf( "The number of MUXes detected = %d (%5.2f %% of logic).\n", nMuxes, 300.0*nMuxes/Abc_NtkNodeNum(pNtk) ); +} + +/**Function************************************************************* + + Synopsis [Sets the expansion boundary for conversion into multi-input AND graph.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkRenodeSetBoundsMulti( Abc_Ntk_t * pNtk, int nThresh ) +{ + Abc_Obj_t * pNode; + int i, nFanouts, nConeSize; + + // make sure the mark is not set + Abc_NtkForEachObj( pNtk, pNode, i ) + assert( pNode->fMarkA == 0 ); + + // mark the nodes where expansion stops using pNode->fMarkA + Abc_NtkForEachNode( pNtk, pNode, i ) + { + // skip PI/PO nodes + if ( Abc_NodeIsConst(pNode) ) + continue; + // mark the nodes with multiple fanouts +// if ( Abc_ObjFanoutNum(pNode) > 1 ) +// pNode->fMarkA = 1; + // mark the nodes with multiple fanouts + nFanouts = Abc_ObjFanoutNum(pNode); + nConeSize = Abc_NodeMffcSizeStop(pNode); + if ( (nFanouts - 1) * nConeSize > nThresh ) + pNode->fMarkA = 1; + // mark the children if they are pointed by the complemented edges + if ( Abc_ObjFaninC0(pNode) ) + Abc_ObjFanin0(pNode)->fMarkA = 1; + if ( Abc_ObjFaninC1(pNode) ) + Abc_ObjFanin1(pNode)->fMarkA = 1; + } + + // mark the PO drivers + Abc_NtkForEachCo( pNtk, pNode, i ) + Abc_ObjFanin0(pNode)->fMarkA = 1; +} + +/**Function************************************************************* + + Synopsis [Sets a simple boundary.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkRenodeSetBoundsSimple( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pNode; + int i; + // make sure the mark is not set + Abc_NtkForEachObj( pNtk, pNode, i ) + assert( pNode->fMarkA == 0 ); + // mark the nodes where expansion stops using pNode->fMarkA + Abc_NtkForEachNode( pNtk, pNode, i ) + pNode->fMarkA = 1; +} + +/**Function************************************************************* + + Synopsis [Collects the fanins of a large node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkRenodeCone_rec( Abc_Obj_t * pNode, Vec_Ptr_t * vCone ) +{ + assert( !Abc_ObjIsComplement(pNode) ); + if ( pNode->fMarkA || !Abc_ObjIsNode(pNode) ) + { + Vec_PtrPushUnique( vCone, pNode ); + return; + } + Abc_NtkRenodeCone_rec( Abc_ObjFanin(pNode,0), vCone ); + Abc_NtkRenodeCone_rec( Abc_ObjFanin(pNode,1), vCone ); +} + +/**Function************************************************************* + + Synopsis [Collects the fanins of a large node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkRenodeCone( Abc_Obj_t * pNode, Vec_Ptr_t * vCone ) +{ + assert( !Abc_ObjIsComplement(pNode) ); + assert( Abc_ObjIsNode(pNode) ); + vCone->nSize = 0; + Abc_NtkRenodeCone_rec( Abc_ObjFanin(pNode,0), vCone ); + Abc_NtkRenodeCone_rec( Abc_ObjFanin(pNode,1), vCone ); +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcRewrite.c b/src/base/abci/abcRewrite.c new file mode 100644 index 00000000..75fe1627 --- /dev/null +++ b/src/base/abci/abcRewrite.c @@ -0,0 +1,184 @@ +/**CFile**************************************************************** + + FileName [abcRes.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Technology-independent resynthesis of the AIG.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcRes.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "rwr.h" +#include "dec.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static Cut_Man_t * Abc_NtkStartCutManForRewrite( Abc_Ntk_t * pNtk, int fDrop ); +static void Abc_NodePrintCuts( Abc_Obj_t * pNode ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Performs incremental rewriting of the AIG.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkRewrite( Abc_Ntk_t * pNtk, int fUseZeros, int fVerbose ) +{ + int fCheck = 1; + int fDrop = 0; + ProgressBar * pProgress; + Cut_Man_t * pManCut; + Rwr_Man_t * pManRwr; + Abc_Obj_t * pNode; + int i, nNodes, nGain; + int clk, clkStart = clock(); + + assert( Abc_NtkIsStrash(pNtk) ); + // cleanup the AIG + Abc_AigCleanup(pNtk->pManFunc); + // start the rewriting manager + pManRwr = Rwr_ManStart( 0 ); + if ( pManRwr == NULL ) + return 0; + Abc_NtkStartReverseLevels( pNtk ); + // start the cut manager +clk = clock(); + pManCut = Abc_NtkStartCutManForRewrite( pNtk, fDrop ); +Rwr_ManAddTimeCuts( pManRwr, clock() - clk ); + pNtk->pManCut = pManCut; + + // resynthesize each node once + nNodes = Abc_NtkObjNumMax(pNtk); + pProgress = Extra_ProgressBarStart( stdout, nNodes ); + Abc_NtkForEachNode( pNtk, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // stop if all nodes have been tried once + if ( i >= nNodes ) + break; + // skip the constant node + if ( Abc_NodeIsConst(pNode) ) + continue; + // for each cut, try to resynthesize it + nGain = Rwr_NodeRewrite( pManRwr, pManCut, pNode, fUseZeros ); + if ( nGain > 0 || nGain == 0 && fUseZeros ) + { + Dec_Graph_t * pGraph = Rwr_ManReadDecs(pManRwr); + int fCompl = Rwr_ManReadCompl(pManRwr); + // complement the FF if needed + if ( fCompl ) Dec_GraphComplement( pGraph ); + Dec_GraphUpdateNetwork( pNode, pGraph, nGain ); + if ( fCompl ) Dec_GraphComplement( pGraph ); + } + } + Extra_ProgressBarStop( pProgress ); +Rwr_ManAddTimeTotal( pManRwr, clock() - clkStart ); + // print stats + if ( fVerbose ) + Rwr_ManPrintStats( pManRwr ); + // delete the managers + Rwr_ManStop( pManRwr ); + Cut_ManStop( pManCut ); + pNtk->pManCut = NULL; + Abc_NtkStopReverseLevels( pNtk ); + // check + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + { + printf( "Abc_NtkRewrite: The network check has failed.\n" ); + return 0; + } + return 1; +} + + +/**Function************************************************************* + + Synopsis [Starts the cut manager for rewriting.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Cut_Man_t * Abc_NtkStartCutManForRewrite( Abc_Ntk_t * pNtk, int fDrop ) +{ + static Cut_Params_t Params, * pParams = &Params; + Cut_Man_t * pManCut; + Abc_Obj_t * pObj; + int i; + // start the cut manager + memset( pParams, 0, sizeof(Cut_Params_t) ); + pParams->nVarsMax = 4; // the max cut size ("k" of the k-feasible cuts) + pParams->nKeepMax = 250; // the max number of cuts kept at a node + pParams->fTruth = 1; // compute truth tables + pParams->fHash = 1; // hash cuts to detect unique + pParams->fFilter = 0; // filter dominated cuts + pParams->fSeq = 0; // compute sequential cuts + pParams->fDrop = fDrop; // drop cuts on the fly + pParams->fVerbose = 0; // the verbosiness flag + pParams->nIdsMax = Abc_NtkObjNumMax( pNtk ); + pManCut = Cut_ManStart( pParams ); + if ( pParams->fDrop ) + Cut_ManSetFanoutCounts( pManCut, Abc_NtkFanoutCounts(pNtk) ); + // set cuts for PIs + Abc_NtkForEachCi( pNtk, pObj, i ) + if ( Abc_ObjFanoutNum(pObj) > 0 ) + Cut_NodeSetTriv( pManCut, pObj->Id ); + return pManCut; +} + +/**Function************************************************************* + + Synopsis [Prints the cuts at the nodes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodePrintCuts( Abc_Obj_t * pNode ) +{ + Cut_Cut_t * pCut; + unsigned uTruth; + printf( "\nNode %s\n", Abc_ObjName(pNode) ); + for ( pCut = (Cut_Cut_t *)pNode->pCopy; pCut; pCut = pCut->pNext ) + { + uTruth = pCut->uTruth; + Extra_PrintBinary( stdout, &uTruth, 16 ); + printf( " " ); + Cut_CutPrint( pCut ); + printf( "\n" ); + } +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcSat.c b/src/base/abci/abcSat.c new file mode 100644 index 00000000..4fb059e5 --- /dev/null +++ b/src/base/abci/abcSat.c @@ -0,0 +1,252 @@ +/**CFile**************************************************************** + + FileName [abcSat.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Procedures to solve the miter using the internal SAT solver.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcSat.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static void Abc_NodeAddClauses( solver * pSat, char * pSop0, char * pSop1, Abc_Obj_t * pNode, Vec_Int_t * vVars ); +static void Abc_NodeAddClausesTop( solver * pSat, Abc_Obj_t * pNode, Vec_Int_t * vVars ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Attempts to solve the miter using an internal SAT solver.] + + Description [Returns 1 if the miter is SAT.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +bool Abc_NtkMiterSat( Abc_Ntk_t * pNtk, int fVerbose ) +{ + solver * pSat; + lbool status; + int clk; + + assert( Abc_NtkIsBddLogic(pNtk) ); + assert( Abc_NtkLatchNum(pNtk) == 0 ); + + if ( Abc_NtkPoNum(pNtk) > 1 ) + fprintf( stdout, "Warning: The miter has more than 1 output. SAT will try to prove all of them.\n" ); + + // load clauses into the solver + clk = clock(); + pSat = Abc_NtkMiterSatCreate( pNtk ); +// printf( "Created SAT problem with %d variable and %d clauses. ", +// solver_nvars(pSat), solver_nclauses(pSat) ); +// PRT( "Time", clock() - clk ); + + // simplify the problem + clk = clock(); + status = solver_simplify(pSat); +// printf( "Simplified the problem to %d variables and %d clauses. ", +// solver_nvars(pSat), solver_nclauses(pSat) ); +// PRT( "Time", clock() - clk ); + if ( status == l_False ) + { + solver_delete( pSat ); + printf( "The problem is UNSAT after simplification.\n" ); + return 0; + } + + // solve the miter + clk = clock(); + if ( fVerbose ) + pSat->verbosity = 1; + status = solver_solve( pSat, NULL, NULL ); +// if ( fVerbose ) +// { + printf( "The problem is %5s. ", (status == l_True)? "SAT" : "UNSAT" ); + PRT( "SAT solver time", clock() - clk ); +// } + // free the solver + solver_delete( pSat ); + return status == l_True; +} + +/**Function************************************************************* + + Synopsis [Sets up the SAT solver.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +solver * Abc_NtkMiterSatCreate( Abc_Ntk_t * pNtk ) +{ + solver * pSat; + Extra_MmFlex_t * pMmFlex; + Abc_Obj_t * pNode; + Vec_Str_t * vCube; + Vec_Int_t * vVars; + char * pSop0, * pSop1; + int i; + + assert( Abc_NtkIsBddLogic(pNtk) ); + + // start the data structures + pSat = solver_new(); + pMmFlex = Extra_MmFlexStart(); + vCube = Vec_StrAlloc( 100 ); + vVars = Vec_IntAlloc( 100 ); + + // add clauses for each internal nodes + Abc_NtkForEachNode( pNtk, pNode, i ) + { + // derive SOPs for both phases of the node + Abc_NodeBddToCnf( pNode, pMmFlex, vCube, &pSop0, &pSop1 ); + // add the clauses to the solver + Abc_NodeAddClauses( pSat, pSop0, pSop1, pNode, vVars ); + } + // add clauses for each PO + Abc_NtkForEachPo( pNtk, pNode, i ) + Abc_NodeAddClausesTop( pSat, pNode, vVars ); + + // delete + Vec_StrFree( vCube ); + Vec_IntFree( vVars ); + Extra_MmFlexStop( pMmFlex, 0 ); + return pSat; +} + +/**Function************************************************************* + + Synopsis [Adds clauses for the internal node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeAddClauses( solver * pSat, char * pSop0, char * pSop1, Abc_Obj_t * pNode, Vec_Int_t * vVars ) +{ + Abc_Obj_t * pFanin; + int i, c, nFanins; + char * pCube; + + nFanins = Abc_ObjFaninNum( pNode ); + assert( nFanins == Abc_SopGetVarNum( pSop0 ) ); + + // add clauses for the negative phase + for ( c = 0; ; c++ ) + { + // get the cube + pCube = pSop0 + c * (nFanins + 3); + if ( *pCube == 0 ) + break; + // add the clause + vVars->nSize = 0; + Abc_ObjForEachFanin( pNode, pFanin, i ) + { + if ( pCube[i] == '0' ) + Vec_IntPush( vVars, toLit(pFanin->Id) ); + else if ( pCube[i] == '1' ) + Vec_IntPush( vVars, neg(toLit(pFanin->Id)) ); + } + Vec_IntPush( vVars, neg(toLit(pNode->Id)) ); + solver_addclause( pSat, vVars->pArray, vVars->pArray + vVars->nSize ); + } + + // add clauses for the positive phase + for ( c = 0; ; c++ ) + { + // get the cube + pCube = pSop1 + c * (nFanins + 3); + if ( *pCube == 0 ) + break; + // add the clause + vVars->nSize = 0; + Abc_ObjForEachFanin( pNode, pFanin, i ) + { + if ( pCube[i] == '0' ) + Vec_IntPush( vVars, toLit(pFanin->Id) ); + else if ( pCube[i] == '1' ) + Vec_IntPush( vVars, neg(toLit(pFanin->Id)) ); + } + Vec_IntPush( vVars, toLit(pNode->Id) ); + solver_addclause( pSat, vVars->pArray, vVars->pArray + vVars->nSize ); + } +} + +/**Function************************************************************* + + Synopsis [Adds clauses for the PO node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeAddClausesTop( solver * pSat, Abc_Obj_t * pNode, Vec_Int_t * vVars ) +{ + Abc_Obj_t * pFanin; + + pFanin = Abc_ObjFanin0(pNode); + if ( Abc_ObjFaninC0(pNode) ) + { + vVars->nSize = 0; + Vec_IntPush( vVars, toLit(pFanin->Id) ); + Vec_IntPush( vVars, toLit(pNode->Id) ); + solver_addclause( pSat, vVars->pArray, vVars->pArray + vVars->nSize ); + + vVars->nSize = 0; + Vec_IntPush( vVars, neg(toLit(pFanin->Id)) ); + Vec_IntPush( vVars, neg(toLit(pNode->Id)) ); + solver_addclause( pSat, vVars->pArray, vVars->pArray + vVars->nSize ); + } + else + { + vVars->nSize = 0; + Vec_IntPush( vVars, neg(toLit(pFanin->Id)) ); + Vec_IntPush( vVars, toLit(pNode->Id) ); + solver_addclause( pSat, vVars->pArray, vVars->pArray + vVars->nSize ); + + vVars->nSize = 0; + Vec_IntPush( vVars, toLit(pFanin->Id) ); + Vec_IntPush( vVars, neg(toLit(pNode->Id)) ); + solver_addclause( pSat, vVars->pArray, vVars->pArray + vVars->nSize ); + } + + vVars->nSize = 0; + Vec_IntPush( vVars, toLit(pNode->Id) ); + solver_addclause( pSat, vVars->pArray, vVars->pArray + vVars->nSize ); +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcStrash.c b/src/base/abci/abcStrash.c new file mode 100644 index 00000000..935f1300 --- /dev/null +++ b/src/base/abci/abcStrash.c @@ -0,0 +1,287 @@ +/**CFile**************************************************************** + + FileName [aigStrash.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Strashing of the current network.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: aigStrash.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "extra.h" +#include "dec.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +// static functions +static void Abc_NtkStrashPerform( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkAig, bool fAllNodes ); +static Abc_Obj_t * Abc_NodeStrashSop( Abc_Aig_t * pMan, Abc_Obj_t * pNode, char * pSop ); +static Abc_Obj_t * Abc_NodeStrashFactor( Abc_Aig_t * pMan, Abc_Obj_t * pNode, char * pSop ); + +extern char * Mio_GateReadSop( void * pGate ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Creates the strashed AIG network.] + + Description [Converts the logic network or the AIG into a + structurally hashed AIG.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkStrash( Abc_Ntk_t * pNtk, bool fAllNodes, bool fCleanup ) +{ + int fCheck = 1; + Abc_Ntk_t * pNtkAig; + int nNodes; + + assert( !Abc_NtkIsNetlist(pNtk) ); + if ( Abc_NtkIsBddLogic(pNtk) ) + Abc_NtkBddToSop(pNtk); + // print warning about choice nodes + if ( Abc_NtkGetChoiceNum( pNtk ) ) + printf( "Warning: The choice nodes in the initial AIG are removed by strashing.\n" ); + // perform strashing + pNtkAig = Abc_NtkStartFrom( pNtk, ABC_TYPE_STRASH, ABC_FUNC_AIG ); + Abc_NtkStrashPerform( pNtk, pNtkAig, fAllNodes ); + Abc_NtkFinalize( pNtk, pNtkAig ); + // print warning about self-feed latches + if ( Abc_NtkCountSelfFeedLatches(pNtkAig) ) + printf( "The network has %d self-feeding latches.\n", Abc_NtkCountSelfFeedLatches(pNtkAig) ); + if ( fCleanup && (nNodes = Abc_AigCleanup(pNtkAig->pManFunc)) ) + printf( "Cleanup has removed %d nodes.\n", nNodes ); + // duplicate EXDC + if ( pNtk->pExdc ) + pNtkAig->pExdc = Abc_NtkStrash( pNtk->pExdc, 0, 1 ); + // make sure everything is okay + if ( fCheck && !Abc_NtkCheck( pNtkAig ) ) + { + printf( "Abc_NtkStrash: The network check has failed.\n" ); + Abc_NtkDelete( pNtkAig ); + return NULL; + } + return pNtkAig; +} + +/**Function************************************************************* + + Synopsis [Appends the second network to the first.] + + Description [Modifies the first network by adding the logic of the second. + Performs structural hashing while appending the networks. Does not add + the COs of the second. Does not change the second network. Returns 0 + if the appending failed, 1 otherise.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkAppend( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2 ) +{ + int fCheck = 1; + Abc_Obj_t * pObj; + int i; + // the first network should be an AIG + assert( Abc_NtkIsStrash(pNtk1) ); + assert( Abc_NtkIsLogic(pNtk2) || Abc_NtkIsStrash(pNtk2) ); + if ( Abc_NtkIsBddLogic(pNtk2) ) + Abc_NtkBddToSop(pNtk2); + // check that the networks have the same PIs + // reorder PIs of pNtk2 according to pNtk1 + if ( !Abc_NtkCompareSignals( pNtk1, pNtk2, 1 ) ) + return 0; + // perform strashing + Abc_NtkCleanCopy( pNtk2 ); + Abc_NtkForEachCi( pNtk2, pObj, i ) + pObj->pCopy = Abc_NtkCi(pNtk1, i); + // add pNtk2 to pNtk1 while strashing + Abc_NtkStrashPerform( pNtk2, pNtk1, 1 ); + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtk1 ) ) + { + printf( "Abc_NtkAppend: The network check has failed.\n" ); + return 0; + } + return 1; +} + + +/**Function************************************************************* + + Synopsis [Prepares the network for strashing.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkStrashPerform( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtkNew, bool fAllNodes ) +{ + ProgressBar * pProgress; + Abc_Aig_t * pMan = pNtkNew->pManFunc; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode, * pNodeNew, * pObj; + int i; + + // perform strashing + vNodes = Abc_NtkDfs( pNtk, fAllNodes ); + pProgress = Extra_ProgressBarStart( stdout, vNodes->nSize ); + Vec_PtrForEachEntry( vNodes, pNode, i ) + { + Extra_ProgressBarUpdate( pProgress, i, NULL ); + // get the node + assert( Abc_ObjIsNode(pNode) ); + // strash the node + pNodeNew = Abc_NodeStrash( pMan, pNode ); + // get the old object + pObj = Abc_ObjFanout0Ntk( pNode ); + // make sure the node is not yet strashed + assert( pObj->pCopy == NULL ); + // mark the old object with the new AIG node + pObj->pCopy = pNodeNew; + } + Vec_PtrFree( vNodes ); + Extra_ProgressBarStop( pProgress ); +} + +/**Function************************************************************* + + Synopsis [Strashes one logic node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeStrash( Abc_Aig_t * pMan, Abc_Obj_t * pNode ) +{ + int fUseFactor = 1; + char * pSop; + + assert( Abc_ObjIsNode(pNode) ); + + // consider the case when the graph is an AIG + if ( Abc_NtkIsStrash(pNode->pNtk) ) + { + if ( Abc_NodeIsConst(pNode) ) + return Abc_AigConst1(pMan); + return Abc_AigAnd( pMan, Abc_ObjChild0Copy(pNode), Abc_ObjChild1Copy(pNode) ); + } + + // get the SOP of the node + if ( Abc_NtkHasMapping(pNode->pNtk) ) + pSop = Mio_GateReadSop(pNode->pData); + else + pSop = pNode->pData; + + // consider the constant node + if ( Abc_NodeIsConst(pNode) ) + return Abc_ObjNotCond( Abc_AigConst1(pMan), Abc_SopIsConst0(pSop) ); + + // decide when to use factoring + if ( fUseFactor && Abc_ObjFaninNum(pNode) > 2 && Abc_SopGetCubeNum(pSop) > 1 ) + return Abc_NodeStrashFactor( pMan, pNode, pSop ); + return Abc_NodeStrashSop( pMan, pNode, pSop ); +} + +/**Function************************************************************* + + Synopsis [Strashes one logic node using its SOP.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeStrashSop( Abc_Aig_t * pMan, Abc_Obj_t * pNode, char * pSop ) +{ + Abc_Obj_t * pFanin, * pAnd, * pSum; + Abc_Obj_t * pConst1 = Abc_AigConst1(pMan); + char * pCube; + int i, nFanins; + + // get the number of node's fanins + nFanins = Abc_ObjFaninNum( pNode ); + assert( nFanins == Abc_SopGetVarNum(pSop) ); + // go through the cubes of the node's SOP + pSum = Abc_ObjNot(pConst1); + Abc_SopForEachCube( pSop, nFanins, pCube ) + { + // create the AND of literals + pAnd = pConst1; + Abc_ObjForEachFanin( pNode, pFanin, i ) // pFanin can be a net + { + if ( pCube[i] == '1' ) + pAnd = Abc_AigAnd( pMan, pAnd, pFanin->pCopy ); + else if ( pCube[i] == '0' ) + pAnd = Abc_AigAnd( pMan, pAnd, Abc_ObjNot(pFanin->pCopy) ); + } + // add to the sum of cubes + pSum = Abc_AigOr( pMan, pSum, pAnd ); + } + // decide whether to complement the result + if ( Abc_SopIsComplement(pSop) ) + pSum = Abc_ObjNot(pSum); + return pSum; +} + +/**Function************************************************************* + + Synopsis [Strashes one logic node using its SOP.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Obj_t * Abc_NodeStrashFactor( Abc_Aig_t * pMan, Abc_Obj_t * pRoot, char * pSop ) +{ + Dec_Graph_t * pFForm; + Dec_Node_t * pNode; + Abc_Obj_t * pAnd; + int i; + // perform factoring + pFForm = Dec_Factor( pSop ); + // collect the fanins + Dec_GraphForEachLeaf( pFForm, pNode, i ) + pNode->pFunc = Abc_ObjFanin(pRoot,i)->pCopy; + // perform strashing + pAnd = Dec_GraphToNetwork( pMan, pFForm ); + Dec_GraphFree( pFForm ); + return pAnd; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcSweep.c b/src/base/abci/abcSweep.c new file mode 100644 index 00000000..ca9bd34e --- /dev/null +++ b/src/base/abci/abcSweep.c @@ -0,0 +1,607 @@ +/**CFile**************************************************************** + + FileName [abcDsd.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Technology dependent sweep.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcDsd.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "fraig.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +extern Fraig_Man_t * Abc_NtkToFraig( Abc_Ntk_t * pNtk, Fraig_Params_t * pParams, int fAllNodes ); + +static stmm_table * Abc_NtkFraigEquiv( Fraig_Man_t * p, Abc_Ntk_t * pNtk, int fUseInv, bool fVerbose ); +static void Abc_NtkFraigTransform( Abc_Ntk_t * pNtk, stmm_table * tEquiv, int fUseInv, bool fVerbose ); +static void Abc_NtkFraigMergeClassMapped( Abc_Ntk_t * pNtk, Abc_Obj_t * pChain, int fVerbose, int fUseInv ); +static void Abc_NtkFraigMergeClass( Abc_Ntk_t * pNtk, Abc_Obj_t * pChain, int fVerbose, int fUseInv ); +static int Abc_NodeDroppingCost( Abc_Obj_t * pNode ); + +static void Abc_NodeSweep( Abc_Obj_t * pNode, int fVerbose ); +static void Abc_NodeConstantInput( Abc_Obj_t * pNode, Abc_Obj_t * pFanin, bool fConst0 ); +static void Abc_NodeComplementInput( Abc_Obj_t * pNode, Abc_Obj_t * pFanin ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Sweping functionally equivalence nodes.] + + Description [Removes gates with equivalent functionality. Works for + both technology-independent and mapped networks. If the flag is set, + allows adding inverters at the gate outputs.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +bool Abc_NtkFraigSweep( Abc_Ntk_t * pNtk, int fUseInv, int fVerbose ) +{ + int fCheck = 1; + Fraig_Params_t Params; + Abc_Ntk_t * pNtkAig; + Fraig_Man_t * pMan; + stmm_table * tEquiv; + + assert( !Abc_NtkIsStrash(pNtk) ); + + // derive the AIG + pNtkAig = Abc_NtkStrash( pNtk, 0, 1 ); + // perform fraiging of the AIG + Fraig_ParamsSetDefault( &Params ); + pMan = Abc_NtkToFraig( pNtkAig, &Params, 0 ); + // collect the classes of equivalent nets + tEquiv = Abc_NtkFraigEquiv( pMan, pNtk, fUseInv, fVerbose ); + + // transform the network into the equivalent one + Abc_NtkFraigTransform( pNtk, tEquiv, fUseInv, fVerbose ); + stmm_free_table( tEquiv ); + + // free the manager + Fraig_ManFree( pMan ); + Abc_NtkDelete( pNtkAig ); + + // cleanup the dangling nodes + Abc_NtkCleanup( pNtk, fVerbose ); + // check + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + { + printf( "Abc_NtkFraigSweep: The network check has failed.\n" ); + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Collects equivalence classses of node in the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +stmm_table * Abc_NtkFraigEquiv( Fraig_Man_t * p, Abc_Ntk_t * pNtk, int fUseInv, bool fVerbose ) +{ + Abc_Obj_t * pList, * pNode, * pNodeAig; + Fraig_Node_t * gNode; + Abc_Obj_t ** ppSlot; + stmm_table * tStrash2Net; + stmm_table * tResult; + stmm_generator * gen; + int c, Counter; + + // create mapping of strashed nodes into the corresponding network nodes + tStrash2Net = stmm_init_table(stmm_ptrcmp,stmm_ptrhash); + Abc_NtkForEachNode( pNtk, pNode, c ) + { + // get the strashed node + pNodeAig = pNode->pCopy; + // skip the dangling nodes + if ( pNodeAig == NULL ) + continue; + // skip the constant input nodes + if ( Abc_ObjFaninNum(pNode) == 0 ) + continue; + // skip the nodes that fanout into POs + if ( Abc_NodeHasUniqueCoFanout(pNode) ) + continue; + // get the FRAIG node + gNode = Fraig_NotCond( Abc_ObjRegular(pNodeAig)->pCopy, Abc_ObjIsComplement(pNodeAig) ); + if ( !stmm_find_or_add( tStrash2Net, (char *)Fraig_Regular(gNode), (char ***)&ppSlot ) ) + *ppSlot = NULL; + // add the node to the list + pNode->pNext = *ppSlot; + *ppSlot = pNode; + // mark the node if it is complemented + pNode->fPhase = Fraig_IsComplement(gNode); + } + + // print the classes + c = 0; + Counter = 0; + tResult = stmm_init_table(stmm_ptrcmp,stmm_ptrhash); + stmm_foreach_item( tStrash2Net, gen, (char **)&gNode, (char **)&pList ) + { + // skip the trival classes + if ( pList == NULL || pList->pNext == NULL ) + continue; + // add the non-trival class + stmm_insert( tResult, (char *)pList, NULL ); + // count nodes in the non-trival classes + for ( pNode = pList; pNode; pNode = pNode->pNext ) + Counter++; +/* + if ( fVerbose ) + { + printf( "Class %2d : {", c ); + for ( pNode = pList; pNode; pNode = pNode->pNext ) + { + pNode->pCopy = NULL; + printf( " %s", Abc_ObjName(pNode) ); + if ( pNode->fPhase ) printf( "(*)" ); + } + printf( " }\n" ); + c++; + } +*/ + } + if ( fVerbose ) + { + printf( "Sweeping stats for network \"%s\":\n", pNtk->pName ); + printf( "Internal nodes = %d. Different functions (up to compl) = %d.\n", Abc_NtkNodeNum(pNtk), stmm_count(tStrash2Net) ); + printf( "Non-trivial classes = %d. Nodes in non-trivial classes = %d.\n", stmm_count(tResult), Counter ); + } + stmm_free_table( tStrash2Net ); + return tResult; +} + + +/**Function************************************************************* + + Synopsis [Transforms the network using the equivalence relation on nodes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFraigTransform( Abc_Ntk_t * pNtk, stmm_table * tEquiv, int fUseInv, bool fVerbose ) +{ + stmm_generator * gen; + Abc_Obj_t * pList; + if ( stmm_count(tEquiv) == 0 ) + return; + // assign levels to the nodes of the network + Abc_NtkGetLevelNum( pNtk ); + // merge nodes in the classes + if ( Abc_NtkHasMapping( pNtk ) ) + { + Abc_NtkDelayTrace( pNtk ); + stmm_foreach_item( tEquiv, gen, (char **)&pList, NULL ) + Abc_NtkFraigMergeClassMapped( pNtk, pList, fUseInv, fVerbose ); + } + else + { + stmm_foreach_item( tEquiv, gen, (char **)&pList, NULL ) + Abc_NtkFraigMergeClass( pNtk, pList, fUseInv, fVerbose ); + } +} + + +/**Function************************************************************* + + Synopsis [Transforms the list of one-phase equivalent nodes.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFraigMergeClassMapped( Abc_Ntk_t * pNtk, Abc_Obj_t * pChain, int fUseInv, int fVerbose ) +{ + Abc_Obj_t * pListDir, * pListInv; + Abc_Obj_t * pNodeMin, * pNode, * pNext; + float Arrival1, Arrival2; + + assert( pChain ); + assert( pChain->pNext ); + + // divide the nodes into two parts: + // those that need the invertor and those that don't need + pListDir = pListInv = NULL; + for ( pNode = pChain, pNext = pChain->pNext; + pNode; + pNode = pNext, pNext = pNode? pNode->pNext : NULL ) + { + // check to which class the node belongs + if ( pNode->fPhase == 1 ) + { + pNode->pNext = pListDir; + pListDir = pNode; + } + else + { + pNode->pNext = pListInv; + pListInv = pNode; + } + } + + // find the node with the smallest number of logic levels + pNodeMin = pListDir; + for ( pNode = pListDir; pNode; pNode = pNode->pNext ) + { + Arrival1 = Abc_NodeReadArrival(pNodeMin)->Worst; + Arrival2 = Abc_NodeReadArrival(pNode )->Worst; + assert( Abc_ObjIsCi(pNodeMin) || Arrival1 > 0 ); + assert( Abc_ObjIsCi(pNode) || Arrival2 > 0 ); + if ( Arrival1 > Arrival2 || + Arrival1 == Arrival2 && pNodeMin->Level > pNode->Level || + Arrival1 == Arrival2 && pNodeMin->Level == pNode->Level && + Abc_NodeDroppingCost(pNodeMin) < Abc_NodeDroppingCost(pNode) ) + pNodeMin = pNode; + } + + // move the fanouts of the direct nodes + for ( pNode = pListDir; pNode; pNode = pNode->pNext ) + if ( pNode != pNodeMin ) + Abc_ObjTransferFanout( pNode, pNodeMin ); + + // find the node with the smallest number of logic levels + pNodeMin = pListInv; + for ( pNode = pListInv; pNode; pNode = pNode->pNext ) + { + Arrival1 = Abc_NodeReadArrival(pNodeMin)->Worst; + Arrival2 = Abc_NodeReadArrival(pNode )->Worst; + assert( Abc_ObjIsCi(pNodeMin) || Arrival1 > 0 ); + assert( Abc_ObjIsCi(pNode) || Arrival2 > 0 ); + if ( Arrival1 > Arrival2 || + Arrival1 == Arrival2 && pNodeMin->Level > pNode->Level || + Arrival1 == Arrival2 && pNodeMin->Level == pNode->Level && + Abc_NodeDroppingCost(pNodeMin) < Abc_NodeDroppingCost(pNode) ) + pNodeMin = pNode; + } + + // move the fanouts of the direct nodes + for ( pNode = pListInv; pNode; pNode = pNode->pNext ) + if ( pNode != pNodeMin ) + Abc_ObjTransferFanout( pNode, pNodeMin ); +} + +/**Function************************************************************* + + Synopsis [Process one equivalence class of nodes.] + + Description [This function does not remove the nodes. It only switches + around the connections.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkFraigMergeClass( Abc_Ntk_t * pNtk, Abc_Obj_t * pChain, int fUseInv, int fVerbose ) +{ + Abc_Obj_t * pListDir, * pListInv; + Abc_Obj_t * pNodeMin, * pNodeMinInv; + Abc_Obj_t * pNode, * pNext; + + assert( pChain ); + assert( pChain->pNext ); + + // find the node with the smallest number of logic levels + pNodeMin = pChain; + for ( pNode = pChain->pNext; pNode; pNode = pNode->pNext ) + if ( pNodeMin->Level > pNode->Level || + ( pNodeMin->Level == pNode->Level && + Abc_NodeDroppingCost(pNodeMin) < Abc_NodeDroppingCost(pNode) ) ) + pNodeMin = pNode; + + // divide the nodes into two parts: + // those that need the invertor and those that don't need + pListDir = pListInv = NULL; + for ( pNode = pChain, pNext = pChain->pNext; + pNode; + pNode = pNext, pNext = pNode? pNode->pNext : NULL ) + { + if ( pNode == pNodeMin ) + continue; + // check to which class the node belongs + if ( pNodeMin->fPhase == pNode->fPhase ) + { + pNode->pNext = pListDir; + pListDir = pNode; + } + else + { + pNode->pNext = pListInv; + pListInv = pNode; + } + } + + // move the fanouts of the direct nodes + for ( pNode = pListDir; pNode; pNode = pNode->pNext ) + Abc_ObjTransferFanout( pNode, pNodeMin ); + + // skip if there are no inverted nodes + if ( pListInv == NULL ) + return; + + // add the invertor + pNodeMinInv = Abc_NodeCreateInv( pNtk, pNodeMin ); + + // move the fanouts of the inverted nodes + for ( pNode = pListInv; pNode; pNode = pNode->pNext ) + Abc_ObjTransferFanout( pNode, pNodeMinInv ); +} + + +/**Function************************************************************* + + Synopsis [Returns the number of literals saved if this node becomes useless.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeDroppingCost( Abc_Obj_t * pNode ) +{ + return 1; +} + + + + + +/**Function************************************************************* + + Synopsis [Removes dangling nodes.] + + Description [Returns the number of nodes removed.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkCleanup( Abc_Ntk_t * pNtk, int fVerbose ) +{ + int fCheck = 1; + Vec_Ptr_t * vNodes; + Abc_Obj_t * pNode; + int i, Counter; + // mark the nodes reachable from the POs + vNodes = Abc_NtkDfs( pNtk, 0 ); + for ( i = 0; i < vNodes->nSize; i++ ) + { + pNode = vNodes->pArray[i]; + pNode->fMarkA = 1; + } + Vec_PtrFree( vNodes ); + // if it is an AIG, also mark the constant 1 node + if ( Abc_NtkIsStrash(pNtk) ) + Abc_AigConst1(pNtk->pManFunc)->fMarkA = 1; + // remove the non-marked nodes + Counter = 0; + Abc_NtkForEachNode( pNtk, pNode, i ) + if ( pNode->fMarkA == 0 ) + { + Abc_NtkDeleteObj( pNode ); + Counter++; + } + // unmark the remaining nodes + Abc_NtkForEachNode( pNtk, pNode, i ) + pNode->fMarkA = 0; + if ( fVerbose ) + printf( "Cleanup removed %d dangling nodes.\n", Counter ); + // check + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + { + printf( "Abc_NtkCleanup: The network check has failed.\n" ); + return -1; + } + return Counter; +} + + + + +/**Function************************************************************* + + Synopsis [Tranditional sweep of the network.] + + Description [Propagates constant and single-input node, removes dangling nodes.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkSweep( Abc_Ntk_t * pNtk, int fVerbose ) +{ + int fCheck = 1; + Abc_Obj_t * pNode; + int i, fConvert, nSwept, nSweptNew; + assert( Abc_NtkIsSopLogic(pNtk) || Abc_NtkIsBddLogic(pNtk) ); + // convert to the BDD representation + fConvert = 0; + if ( Abc_NtkIsSopLogic(pNtk) ) + Abc_NtkSopToBdd(pNtk), fConvert = 1; + // perform cleanup to get rid of dangling nodes + nSwept = Abc_NtkCleanup( pNtk, 0 ); + // make the network minimum base + Abc_NtkRemoveDupFanins(pNtk); + Abc_NtkMinimumBase(pNtk); + do + { + // sweep constants and single-input nodes + Abc_NtkForEachNode( pNtk, pNode, i ) + if ( Abc_ObjFaninNum(pNode) < 2 ) + Abc_NodeSweep( pNode, fVerbose ); + // make the network minimum base + Abc_NtkRemoveDupFanins(pNtk); + Abc_NtkMinimumBase(pNtk); + // perform final clean up (in case new danglies are created) + nSweptNew = Abc_NtkCleanup( pNtk, 0 ); + nSwept += nSweptNew; + } + while ( nSweptNew ); + // conver back to BDD + if ( fConvert ) + Abc_NtkBddToSop(pNtk); + // report + if ( fVerbose ) + printf( "Sweep removed %d nodes.\n", nSwept ); + // check + if ( fCheck && !Abc_NtkCheck( pNtk ) ) + { + printf( "Abc_NtkSweep: The network check has failed.\n" ); + return -1; + } + return nSwept; +} + +/**Function************************************************************* + + Synopsis [Tranditional sweep of the network.] + + Description [Propagates constant and single-input node, removes dangling nodes.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeSweep( Abc_Obj_t * pNode, int fVerbose ) +{ + Vec_Ptr_t * vFanout = pNode->pNtk->vPtrTemp; + Abc_Obj_t * pFanout, * pDriver; + int i; + assert( Abc_ObjFaninNum(pNode) < 2 ); + assert( Abc_ObjFanoutNum(pNode) > 0 ); + // iterate through the fanouts + Abc_NodeCollectFanouts( pNode, vFanout ); + Vec_PtrForEachEntry( vFanout, pFanout, i ) + { + if ( Abc_ObjIsCo(pFanout) ) + { + if ( Abc_ObjFaninNum(pNode) == 1 ) + { + pDriver = Abc_ObjFanin0(pNode); + if ( Abc_ObjIsCi(pDriver) || Abc_ObjFanoutNum(pDriver) > 1 || Abc_ObjFanoutNum(pNode) > 1 ) + continue; + // the driver is a node and its only fanout is this node + if ( Abc_NodeIsInv(pNode) ) + pDriver->pData = Cudd_Not(pDriver->pData); + // replace the fanin of the fanout + Abc_ObjPatchFanin( pFanout, pNode, pDriver ); + } + continue; + } + // the fanout is a regular node + if ( Abc_ObjFaninNum(pNode) == 0 ) + Abc_NodeConstantInput( pFanout, pNode, Abc_NodeIsConst0(pNode) ); + else + { + assert( Abc_ObjFaninNum(pNode) == 1 ); + pDriver = Abc_ObjFanin0(pNode); + if ( Abc_NodeIsInv(pNode) ) + Abc_NodeComplementInput( pFanout, pNode ); + Abc_ObjPatchFanin( pFanout, pNode, pDriver ); + } + } +} + +/**Function************************************************************* + + Synopsis [Replaces the local function by its cofactor.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeConstantInput( Abc_Obj_t * pNode, Abc_Obj_t * pFanin, bool fConst0 ) +{ + DdManager * dd = pNode->pNtk->pManFunc; + DdNode * bVar, * bTemp; + int iFanin; + assert( Abc_NtkIsBddLogic(pNode->pNtk) ); + if ( (iFanin = Vec_FanFindEntry( &pNode->vFanins, pFanin->Id )) == -1 ) + { + printf( "Node %s should be among", Abc_ObjName(pFanin) ); + printf( " the fanins of node %s...\n", Abc_ObjName(pNode) ); + return; + } + bVar = Cudd_NotCond( Cudd_bddIthVar(dd, iFanin), fConst0 ); + pNode->pData = Cudd_Cofactor( dd, bTemp = pNode->pData, bVar ); Cudd_Ref( pNode->pData ); + Cudd_RecursiveDeref( dd, bTemp ); +} + +/**Function************************************************************* + + Synopsis [Changes the polarity of one fanin.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeComplementInput( Abc_Obj_t * pNode, Abc_Obj_t * pFanin ) +{ + DdManager * dd = pNode->pNtk->pManFunc; + DdNode * bVar, * bCof0, * bCof1; + int iFanin; + assert( Abc_NtkIsBddLogic(pNode->pNtk) ); + if ( (iFanin = Vec_FanFindEntry( &pNode->vFanins, pFanin->Id )) == -1 ) + { + printf( "Node %s should be among", Abc_ObjName(pFanin) ); + printf( " the fanins of node %s...\n", Abc_ObjName(pNode) ); + return; + } + bVar = Cudd_bddIthVar( dd, iFanin ); + bCof0 = Cudd_Cofactor( dd, pNode->pData, Cudd_Not(bVar) ); Cudd_Ref( bCof0 ); + bCof1 = Cudd_Cofactor( dd, pNode->pData, bVar ); Cudd_Ref( bCof1 ); + Cudd_RecursiveDeref( dd, pNode->pData ); + pNode->pData = Cudd_bddIte( dd, bVar, bCof0, bCof1 ); Cudd_Ref( pNode->pData ); + Cudd_RecursiveDeref( dd, bCof0 ); + Cudd_RecursiveDeref( dd, bCof1 ); +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcSymm.c b/src/base/abci/abcSymm.c new file mode 100644 index 00000000..f9229639 --- /dev/null +++ b/src/base/abci/abcSymm.c @@ -0,0 +1,221 @@ +/**CFile**************************************************************** + + FileName [abcSymm.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Computation of two-variable symmetries.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcSymm.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static void Abc_NtkSymmetriesUsingBdds( Abc_Ntk_t * pNtk, int fNaive, int fVerbose ); +static void Abc_NtkSymmetriesUsingSandS( Abc_Ntk_t * pNtk, int fVerbose ); +static void Ntk_NetworkSymmsBdd( DdManager * dd, Abc_Ntk_t * pNtk, int fNaive, int fVerbose ); +static void Ntk_NetworkSymmsPrint( Abc_Ntk_t * pNtk, Extra_SymmInfo_t * pSymms ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [The top level procedure to compute symmetries.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkSymmetries( Abc_Ntk_t * pNtk, int fUseBdds, int fNaive, int fVerbose ) +{ + if ( fUseBdds || fNaive ) + Abc_NtkSymmetriesUsingBdds( pNtk, fNaive, fVerbose ); + else + Abc_NtkSymmetriesUsingSandS( pNtk, fVerbose ); +} + +/**Function************************************************************* + + Synopsis [Symmetry computation using simulation and SAT.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkSymmetriesUsingSandS( Abc_Ntk_t * pNtk, int fVerbose ) +{ + extern int Sim_ComputeTwoVarSymms( Abc_Ntk_t * pNtk ); + int nSymms = Sim_ComputeTwoVarSymms( pNtk ); + printf( "The total number of symmetries is %d.\n", nSymms ); +} + +/**Function************************************************************* + + Synopsis [Symmetry computation using BDDs (both naive and smart).] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkSymmetriesUsingBdds( Abc_Ntk_t * pNtk, int fNaive, int fVerbose ) +{ + DdManager * dd; + int clk, clkBdd, clkSym; + + // compute the global functions +clk = clock(); + dd = Abc_NtkGlobalBdds( pNtk, 0 ); + Cudd_AutodynDisable( dd ); + Cudd_zddVarsFromBddVars( dd, 2 ); +clkBdd = clock() - clk; + // create the collapsed network +clk = clock(); + Ntk_NetworkSymmsBdd( dd, pNtk, fNaive, fVerbose ); +clkSym = clock() - clk; + // undo the global functions + Abc_NtkFreeGlobalBdds( pNtk ); + Extra_StopManager( dd ); + pNtk->pManGlob = NULL; + +PRT( "Constructing BDDs", clkBdd ); +PRT( "Computing symms ", clkSym ); +PRT( "TOTAL ", clkBdd + clkSym ); +} + +/**Function************************************************************* + + Synopsis [Symmetry computation using BDDs (both naive and smart).] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Ntk_NetworkSymmsBdd( DdManager * dd, Abc_Ntk_t * pNtk, int fNaive, int fVerbose ) +{ + Extra_SymmInfo_t * pSymms; + Abc_Obj_t * pNode; + DdNode * bFunc; + int nSymms = 0; + int i; + + // compute symmetry info for each PO + Abc_NtkForEachCo( pNtk, pNode, i ) + { + bFunc = pNtk->vFuncsGlob->pArray[i]; + if ( Cudd_IsConstant(bFunc) ) + continue; + if ( fNaive ) + pSymms = Extra_SymmPairsComputeNaive( dd, bFunc ); + else + pSymms = Extra_SymmPairsCompute( dd, bFunc ); + nSymms += pSymms->nSymms; + if ( fVerbose ) + { + printf( "Output %6s (%d): ", Abc_ObjName(pNode), pSymms->nSymms ); + Ntk_NetworkSymmsPrint( pNtk, pSymms ); + } +//Extra_SymmPairsPrint( pSymms ); + Extra_SymmPairsDissolve( pSymms ); + } + printf( "The total number of symmetries is %d.\n", nSymms ); +} + +/**Function************************************************************* + + Synopsis [Printing symmetry groups from the symmetry data structure.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Ntk_NetworkSymmsPrint( Abc_Ntk_t * pNtk, Extra_SymmInfo_t * pSymms ) +{ + char ** pInputNames; + int * pVarTaken; + int i, k, nVars, nSize, fStart; + + // get variable names + nVars = Abc_NtkCiNum(pNtk); + pInputNames = Abc_NtkCollectCioNames( pNtk, 0 ); + + // alloc the array of marks + pVarTaken = ALLOC( int, nVars ); + memset( pVarTaken, 0, sizeof(int) * nVars ); + + // print the groups + fStart = 1; + nSize = pSymms->nVars; + for ( i = 0; i < nSize; i++ ) + { + // skip the variable already considered + if ( pVarTaken[i] ) + continue; + // find all the vars symmetric with this one + for ( k = 0; k < nSize; k++ ) + { + if ( k == i ) + continue; + if ( pSymms->pSymms[i][k] == 0 ) + continue; + // vars i and k are symmetric + assert( pVarTaken[k] == 0 ); + // there is a new symmetry pair + if ( fStart == 1 ) + { // start a new symmetry class + fStart = 0; + printf( " { %s", pInputNames[ pSymms->pVars[i] ] ); + // mark the var as taken + pVarTaken[i] = 1; + } + printf( " %s", pInputNames[ pSymms->pVars[k] ] ); + // mark the var as taken + pVarTaken[k] = 1; + } + if ( fStart == 0 ) + { + printf( " }" ); + fStart = 1; + } + } + printf( "\n" ); + + free( pInputNames ); + free( pVarTaken ); +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcTiming.c b/src/base/abci/abcTiming.c new file mode 100644 index 00000000..b8524bd5 --- /dev/null +++ b/src/base/abci/abcTiming.c @@ -0,0 +1,755 @@ +/**CFile**************************************************************** + + FileName [abcTiming.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Computation of timing info for mapped circuits.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcTiming.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "main.h" +#include "mio.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +struct Abc_ManTime_t_ +{ + Abc_Time_t tArrDef; + Abc_Time_t tReqDef; + Vec_Ptr_t * vArrs; + Vec_Ptr_t * vReqs; +}; + +// static functions +static Abc_ManTime_t * Abc_ManTimeStart(); +static void Abc_ManTimeExpand( Abc_ManTime_t * p, int nSize, int fProgressive ); +static void Abc_NtkTimePrepare( Abc_Ntk_t * pNtk ); + +static void Abc_NodeDelayTraceArrival( Abc_Obj_t * pNode ); + +// accessing the arrival and required times of a node +static inline Abc_Time_t * Abc_NodeArrival( Abc_Obj_t * pNode ) { return pNode->pNtk->pManTime->vArrs->pArray[pNode->Id]; } +static inline Abc_Time_t * Abc_NodeRequired( Abc_Obj_t * pNode ) { return pNode->pNtk->pManTime->vReqs->pArray[pNode->Id]; } + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Reads the arrival time of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Time_t * Abc_NodeReadArrival( Abc_Obj_t * pNode ) +{ + assert( pNode->pNtk->pManTime ); + return Abc_NodeArrival(pNode); +} + +/**Function************************************************************* + + Synopsis [Reads the arrival time of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Time_t * Abc_NodeReadRequired( Abc_Obj_t * pNode ) +{ + assert( pNode->pNtk->pManTime ); + return Abc_NodeRequired(pNode); +} + +/**Function************************************************************* + + Synopsis [Reads the arrival time of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Time_t * Abc_NtkReadDefaultArrival( Abc_Ntk_t * pNtk ) +{ + assert( pNtk->pManTime ); + return &pNtk->pManTime->tArrDef; +} + +/**Function************************************************************* + + Synopsis [Reads the arrival time of the node.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Time_t * Abc_NtkReadDefaultRequired( Abc_Ntk_t * pNtk ) +{ + assert( pNtk->pManTime ); + return &pNtk->pManTime->tReqDef; +} + +/**Function************************************************************* + + Synopsis [Sets the default arrival time for the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkTimeSetDefaultArrival( Abc_Ntk_t * pNtk, float Rise, float Fall ) +{ + if ( Rise == 0.0 && Fall == 0.0 ) + return; + if ( pNtk->pManTime == NULL ) + pNtk->pManTime = Abc_ManTimeStart(); + pNtk->pManTime->tArrDef.Rise = Rise; + pNtk->pManTime->tArrDef.Fall = Fall; + pNtk->pManTime->tArrDef.Worst = ABC_MAX( Rise, Fall ); +} + +/**Function************************************************************* + + Synopsis [Sets the default arrival time for the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkTimeSetDefaultRequired( Abc_Ntk_t * pNtk, float Rise, float Fall ) +{ + if ( Rise == 0.0 && Fall == 0.0 ) + return; + if ( pNtk->pManTime == NULL ) + pNtk->pManTime = Abc_ManTimeStart(); + pNtk->pManTime->tReqDef.Rise = Rise; + pNtk->pManTime->tReqDef.Rise = Fall; + pNtk->pManTime->tReqDef.Worst = ABC_MAX( Rise, Fall ); +} + +/**Function************************************************************* + + Synopsis [Sets the arrival time for an object.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkTimeSetArrival( Abc_Ntk_t * pNtk, int ObjId, float Rise, float Fall ) +{ + Vec_Ptr_t * vTimes; + Abc_Time_t * pTime; + if ( pNtk->pManTime == NULL ) + pNtk->pManTime = Abc_ManTimeStart(); + if ( pNtk->pManTime->tArrDef.Rise == Rise && pNtk->pManTime->tArrDef.Fall == Fall ) + return; + Abc_ManTimeExpand( pNtk->pManTime, ObjId + 1, 1 ); + // set the arrival time + vTimes = pNtk->pManTime->vArrs; + pTime = vTimes->pArray[ObjId]; + pTime->Rise = Rise; + pTime->Fall = Rise; + pTime->Worst = ABC_MAX( Rise, Fall ); +} + +/**Function************************************************************* + + Synopsis [Sets the arrival time for an object.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkTimeSetRequired( Abc_Ntk_t * pNtk, int ObjId, float Rise, float Fall ) +{ + Vec_Ptr_t * vTimes; + Abc_Time_t * pTime; + if ( pNtk->pManTime == NULL ) + pNtk->pManTime = Abc_ManTimeStart(); + if ( pNtk->pManTime->tReqDef.Rise == Rise && pNtk->pManTime->tReqDef.Fall == Fall ) + return; + Abc_ManTimeExpand( pNtk->pManTime, ObjId + 1, 1 ); + // set the required time + vTimes = pNtk->pManTime->vReqs; + pTime = vTimes->pArray[ObjId]; + pTime->Rise = Rise; + pTime->Fall = Rise; + pTime->Worst = ABC_MAX( Rise, Fall ); +} + +/**Function************************************************************* + + Synopsis [Finalizes the timing manager after setting arr/req times.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkTimeInitialize( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pObj; + Abc_Time_t ** ppTimes, * pTime; + int i; + if ( pNtk->pManTime == NULL ) + return; + Abc_ManTimeExpand( pNtk->pManTime, Abc_NtkObjNumMax(pNtk), 0 ); + // set the default timing + ppTimes = (Abc_Time_t **)pNtk->pManTime->vArrs->pArray; + Abc_NtkForEachPi( pNtk, pObj, i ) + { + pTime = ppTimes[pObj->Id]; + if ( pTime->Worst != -ABC_INFINITY ) + continue; + *pTime = pNtk->pManTime->tArrDef; + } + // set the default timing + ppTimes = (Abc_Time_t **)pNtk->pManTime->vReqs->pArray; + Abc_NtkForEachPo( pNtk, pObj, i ) + { + pTime = ppTimes[pObj->Id]; + if ( pTime->Worst != -ABC_INFINITY ) + continue; + *pTime = pNtk->pManTime->tReqDef; + } + // set the 0 arrival times for latches and constant nodes + ppTimes = (Abc_Time_t **)pNtk->pManTime->vArrs->pArray; + Abc_NtkForEachLatch( pNtk, pObj, i ) + { + pTime = ppTimes[pObj->Id]; + pTime->Fall = pTime->Rise = pTime->Worst = 0.0; + } +} + +/**Function************************************************************* + + Synopsis [Prepares the timing manager for delay trace.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkTimePrepare( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pObj; + Abc_Time_t ** ppTimes, * pTime; + int i; + // if there is no timing manager, allocate and initialize + if ( pNtk->pManTime == NULL ) + { + pNtk->pManTime = Abc_ManTimeStart(); + Abc_NtkTimeInitialize( pNtk ); + return; + } + // if timing manager is given, expand it if necessary + Abc_ManTimeExpand( pNtk->pManTime, Abc_NtkObjNumMax(pNtk), 0 ); + // clean arrivals except for PIs + ppTimes = (Abc_Time_t **)pNtk->pManTime->vArrs->pArray; + Abc_NtkForEachNode( pNtk, pObj, i ) + { + pTime = ppTimes[pObj->Id]; + pTime->Fall = pTime->Rise = pTime->Worst = -ABC_INFINITY; + } + Abc_NtkForEachPo( pNtk, pObj, i ) + { + pTime = ppTimes[pObj->Id]; + pTime->Fall = pTime->Rise = pTime->Worst = -ABC_INFINITY; + } + // clean required except for POs +} + + + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_ManTime_t * Abc_ManTimeStart() +{ + Abc_ManTime_t * p; + p = ALLOC( Abc_ManTime_t, 1 ); + memset( p, 0, sizeof(Abc_ManTime_t) ); + p->vArrs = Vec_PtrAlloc( 0 ); + p->vReqs = Vec_PtrAlloc( 0 ); + return p; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_ManTimeStop( Abc_ManTime_t * p ) +{ + if ( p->vArrs->nSize > 0 ) + { + free( p->vArrs->pArray[0] ); + Vec_PtrFree( p->vArrs ); + } + if ( p->vReqs->nSize > 0 ) + { + free( p->vReqs->pArray[0] ); + Vec_PtrFree( p->vReqs ); + } + free( p ); +} + +/**Function************************************************************* + + Synopsis [Duplicates the timing manager with the PI/PO timing info.] + + Description [The PIs/POs of the new network should be allocated.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_ManTimeDup( Abc_Ntk_t * pNtkOld, Abc_Ntk_t * pNtkNew ) +{ + Abc_Obj_t * pObj; + Abc_Time_t ** ppTimesOld, ** ppTimesNew; + int i; + if ( pNtkOld->pManTime == NULL ) + return; + assert( Abc_NtkPiNum(pNtkOld) == Abc_NtkPiNum(pNtkNew) ); + assert( Abc_NtkPoNum(pNtkOld) == Abc_NtkPoNum(pNtkNew) ); + assert( Abc_NtkLatchNum(pNtkOld) == Abc_NtkLatchNum(pNtkNew) ); + // create the new timing manager + pNtkNew->pManTime = Abc_ManTimeStart(); + Abc_ManTimeExpand( pNtkNew->pManTime, Abc_NtkObjNumMax(pNtkNew), 0 ); + // set the default timing + pNtkNew->pManTime->tArrDef = pNtkOld->pManTime->tArrDef; + pNtkNew->pManTime->tReqDef = pNtkOld->pManTime->tReqDef; + // set the CI timing + ppTimesOld = (Abc_Time_t **)pNtkOld->pManTime->vArrs->pArray; + ppTimesNew = (Abc_Time_t **)pNtkNew->pManTime->vArrs->pArray; + Abc_NtkForEachCi( pNtkOld, pObj, i ) + *ppTimesNew[ Abc_NtkCi(pNtkNew,i)->Id ] = *ppTimesOld[ pObj->Id ]; + // set the CO timing + ppTimesOld = (Abc_Time_t **)pNtkOld->pManTime->vReqs->pArray; + ppTimesNew = (Abc_Time_t **)pNtkNew->pManTime->vReqs->pArray; + Abc_NtkForEachCo( pNtkOld, pObj, i ) + *ppTimesNew[ Abc_NtkCo(pNtkNew,i)->Id ] = *ppTimesOld[ pObj->Id ]; +} + +/**Function************************************************************* + + Synopsis [Expends the storage for timing information.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_ManTimeExpand( Abc_ManTime_t * p, int nSize, int fProgressive ) +{ + Vec_Ptr_t * vTimes; + Abc_Time_t * ppTimes, * ppTimesOld, * pTime; + int nSizeOld, nSizeNew, i; + + nSizeOld = p->vArrs->nSize; + if ( nSizeOld >= nSize ) + return; + nSizeNew = fProgressive? 2 * nSize : nSize; + if ( nSizeNew < 100 ) + nSizeNew = 100; + + vTimes = p->vArrs; + Vec_PtrGrow( vTimes, nSizeNew ); + vTimes->nSize = nSizeNew; + ppTimesOld = ( nSizeOld == 0 )? NULL : vTimes->pArray[0]; + ppTimes = REALLOC( Abc_Time_t, ppTimesOld, nSizeNew ); + for ( i = 0; i < nSizeNew; i++ ) + vTimes->pArray[i] = ppTimes + i; + for ( i = nSizeOld; i < nSizeNew; i++ ) + { + pTime = vTimes->pArray[i]; + pTime->Rise = -ABC_INFINITY; + pTime->Fall = -ABC_INFINITY; + pTime->Worst = -ABC_INFINITY; + } + + vTimes = p->vReqs; + Vec_PtrGrow( vTimes, nSizeNew ); + vTimes->nSize = nSizeNew; + ppTimesOld = ( nSizeOld == 0 )? NULL : vTimes->pArray[0]; + ppTimes = REALLOC( Abc_Time_t, ppTimesOld, nSizeNew ); + for ( i = 0; i < nSizeNew; i++ ) + vTimes->pArray[i] = ppTimes + i; + for ( i = nSizeOld; i < nSizeNew; i++ ) + { + pTime = vTimes->pArray[i]; + pTime->Rise = -ABC_INFINITY; + pTime->Fall = -ABC_INFINITY; + pTime->Worst = -ABC_INFINITY; + } +} + + + + + + +/**Function************************************************************* + + Synopsis [Sets the CI node levels according to the arrival info.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkSetNodeLevelsArrival( Abc_Ntk_t * pNtkOld ) +{ + Abc_Obj_t * pNodeOld, * pNodeNew; + float tAndDelay; + int i; + if ( pNtkOld->pManTime == NULL ) + return; + if ( Mio_LibraryReadNand2(Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame())) == NULL ) + return; + tAndDelay = Mio_LibraryReadDelayNand2Max(Abc_FrameReadLibGen(Abc_FrameGetGlobalFrame())); + Abc_NtkForEachPi( pNtkOld, pNodeOld, i ) + { + pNodeNew = pNodeOld->pCopy; + pNodeNew->Level = (int)(Abc_NodeArrival(pNodeOld)->Worst / tAndDelay); + } +} + +/**Function************************************************************* + + Synopsis [Sets the CI node levels according to the arrival info.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Time_t * Abc_NtkGetCiArrivalTimes( Abc_Ntk_t * pNtk ) +{ + Abc_Time_t * p; + Abc_Obj_t * pNode; + int i; + p = ALLOC( Abc_Time_t, Abc_NtkCiNum(pNtk) ); + memset( p, 0, sizeof(Abc_Time_t) * Abc_NtkCiNum(pNtk) ); + if ( pNtk->pManTime == NULL ) + return p; + // set the PI arrival times + Abc_NtkForEachPi( pNtk, pNode, i ) + p[i] = *Abc_NodeArrival(pNode); + return p; +} + + +/**Function************************************************************* + + Synopsis [Sets the CI node levels according to the arrival info.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +float * Abc_NtkGetCiArrivalFloats( Abc_Ntk_t * pNtk ) +{ + float * p; + Abc_Obj_t * pNode; + int i; + p = ALLOC( float, Abc_NtkCiNum(pNtk) ); + memset( p, 0, sizeof(float) * Abc_NtkCiNum(pNtk) ); + if ( pNtk->pManTime == NULL ) + return p; + // set the PI arrival times + Abc_NtkForEachPi( pNtk, pNode, i ) + p[i] = Abc_NodeArrival(pNode)->Worst; + return p; +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +float Abc_NtkDelayTrace( Abc_Ntk_t * pNtk ) +{ + Abc_Obj_t * pNode, * pDriver; + Vec_Ptr_t * vNodes; + Abc_Time_t * pTime; + float tArrivalMax; + int i; + + assert( Abc_NtkIsMappedLogic(pNtk) ); + + Abc_NtkTimePrepare( pNtk ); + vNodes = Abc_NtkDfs( pNtk, 1 ); + for ( i = 0; i < vNodes->nSize; i++ ) + Abc_NodeDelayTraceArrival( vNodes->pArray[i] ); + Vec_PtrFree( vNodes ); + + // get the latest arrival times + tArrivalMax = -ABC_INFINITY; + Abc_NtkForEachCo( pNtk, pNode, i ) + { + pDriver = Abc_ObjFanin0(pNode); + pTime = Abc_NodeArrival(pDriver); + if ( tArrivalMax < pTime->Worst ) + tArrivalMax = pTime->Worst; + } + return tArrivalMax; +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeDelayTraceArrival( Abc_Obj_t * pNode ) +{ + Abc_Obj_t * pFanin; + Abc_Time_t * pTimeIn, * pTimeOut; + float tDelayBlockRise, tDelayBlockFall; + Mio_PinPhase_t PinPhase; + Mio_Pin_t * pPin; + int i; + + // start the arrival time of the node + pTimeOut = Abc_NodeArrival(pNode); + pTimeOut->Rise = pTimeOut->Fall = 0; + // go through the pins of the gate + pPin = Mio_GateReadPins(pNode->pData); + Abc_ObjForEachFanin( pNode, pFanin, i ) + { + pTimeIn = Abc_NodeArrival(pFanin); + assert( pTimeIn->Worst != -ABC_INFINITY ); + // get the interesting parameters of this pin + PinPhase = Mio_PinReadPhase(pPin); + tDelayBlockRise = (float)Mio_PinReadDelayBlockRise( pPin ); + tDelayBlockFall = (float)Mio_PinReadDelayBlockFall( pPin ); + // compute the arrival times of the positive phase + if ( PinPhase != MIO_PHASE_INV ) // NONINV phase is present + { + if ( pTimeOut->Rise < pTimeIn->Rise + tDelayBlockRise ) + pTimeOut->Rise = pTimeIn->Rise + tDelayBlockRise; + if ( pTimeOut->Fall < pTimeIn->Fall + tDelayBlockFall ) + pTimeOut->Fall = pTimeIn->Fall + tDelayBlockFall; + } + if ( PinPhase != MIO_PHASE_NONINV ) // INV phase is present + { + if ( pTimeOut->Rise < pTimeIn->Fall + tDelayBlockRise ) + pTimeOut->Rise = pTimeIn->Fall + tDelayBlockRise; + if ( pTimeOut->Fall < pTimeIn->Rise + tDelayBlockFall ) + pTimeOut->Fall = pTimeIn->Rise + tDelayBlockFall; + } + pPin = Mio_PinReadNext(pPin); + } + pTimeOut->Worst = ABC_MAX( pTimeOut->Rise, pTimeOut->Fall ); +} + + + + +/**Function************************************************************* + + Synopsis [Prepares the AIG for the comptuation of required levels.] + + Description [This procedure should be called before the required times + are used. It starts internal data structures, which records the level + from the COs of the AIG nodes in reverse topologogical order.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkStartReverseLevels( Abc_Ntk_t * pNtk ) +{ + Vec_Ptr_t * vNodes; + Abc_Obj_t * pObj, * pFanout; + int i, k, nLevelsCur; + assert( Abc_NtkIsStrash(pNtk) ); + // remember the maximum number of direct levels + pNtk->LevelMax = Abc_AigGetLevelNum(pNtk); + // start the reverse levels + pNtk->vLevelsR = Vec_IntAlloc( 0 ); + Vec_IntFill( pNtk->vLevelsR, Abc_NtkObjNumMax(pNtk), 0 ); + // compute levels in reverse topological order + vNodes = Abc_NtkDfsReverse( pNtk ); + Vec_PtrForEachEntry( vNodes, pObj, i ) + { + nLevelsCur = 0; + Abc_ObjForEachFanout( pObj, pFanout, k ) + if ( nLevelsCur < Vec_IntEntry(pNtk->vLevelsR, pFanout->Id) ) + nLevelsCur = Vec_IntEntry(pNtk->vLevelsR, pFanout->Id); + Vec_IntWriteEntry( pNtk->vLevelsR, pObj->Id, nLevelsCur + 1 ); + } + Vec_PtrFree( vNodes ); +} + +/**Function************************************************************* + + Synopsis [Cleans the data structures used to compute required levels.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkStopReverseLevels( Abc_Ntk_t * pNtk ) +{ + assert( pNtk->vLevelsR ); + Vec_IntFree( pNtk->vLevelsR ); + pNtk->vLevelsR = NULL; + pNtk->LevelMax = 0; + +} + +/**Function************************************************************* + + Synopsis [Sets the reverse level of the node.] + + Description [The reverse level is the level of the node in reverse + topological order, starting from the COs.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NodeSetReverseLevel( Abc_Obj_t * pObj, int LevelR ) +{ + Abc_Ntk_t * pNtk = pObj->pNtk; + assert( Abc_NtkIsStrash(pNtk) ); + assert( pNtk->vLevelsR ); + Vec_IntFillExtra( pNtk->vLevelsR, pObj->Id + 1, 0 ); + Vec_IntWriteEntry( pNtk->vLevelsR, pObj->Id, LevelR ); +} + +/**Function************************************************************* + + Synopsis [Returns the reverse level of the node.] + + Description [The reverse level is the level of the node in reverse + topological order, starting from the COs.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeReadReverseLevel( Abc_Obj_t * pObj ) +{ + Abc_Ntk_t * pNtk = pObj->pNtk; + assert( Abc_NtkIsStrash(pNtk) ); + assert( pNtk->vLevelsR ); + Vec_IntFillExtra( pNtk->vLevelsR, pObj->Id + 1, 0 ); + return Vec_IntEntry(pNtk->vLevelsR, pObj->Id); +} + +/**Function************************************************************* + + Synopsis [Returns required level of the node.] + + Description [Converts the reverse levels of the node into its required + level as follows: ReqLevel(Node) = MaxLevels(Ntk) + 1 - LevelR(Node).] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NodeReadRequiredLevel( Abc_Obj_t * pObj ) +{ + Abc_Ntk_t * pNtk = pObj->pNtk; + assert( Abc_NtkIsStrash(pNtk) ); + assert( pNtk->vLevelsR ); + return pNtk->LevelMax + 1 - Vec_IntEntry(pNtk->vLevelsR, pObj->Id); +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcUnreach.c b/src/base/abci/abcUnreach.c new file mode 100644 index 00000000..0fe3ec63 --- /dev/null +++ b/src/base/abci/abcUnreach.c @@ -0,0 +1,336 @@ +/**CFile**************************************************************** + + FileName [abcUnreach.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Computes unreachable states for small benchmarks.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcUnreach.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static DdNode * Abc_NtkTransitionRelation( DdManager * dd, Abc_Ntk_t * pNtk, int fVerbose ); +static DdNode * Abc_NtkInitStateAndVarMap( DdManager * dd, Abc_Ntk_t * pNtk, int fVerbose ); +static DdNode * Abc_NtkComputeUnreachable( DdManager * dd, Abc_Ntk_t * pNtk, DdNode * bRelation, DdNode * bInitial, bool fVerbose ); +static Abc_Ntk_t * Abc_NtkConstructExdc ( DdManager * dd, Abc_Ntk_t * pNtk, DdNode * bUnreach ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Extracts sequential DCs of the network.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Abc_NtkExtractSequentialDcs( Abc_Ntk_t * pNtk, bool fVerbose ) +{ + int fCheck = 1; + int fReorder = 1; + DdManager * dd; + DdNode * bRelation, * bInitial, * bUnreach; + + // remove EXDC network if present + if ( pNtk->pExdc ) + { + Abc_NtkDelete( pNtk->pExdc ); + pNtk->pExdc = NULL; + } + + // compute the global BDDs of the latches + dd = Abc_NtkGlobalBdds( pNtk, 1 ); + if ( dd == NULL ) + return 0; + if ( fVerbose ) + printf( "The shared BDD size is %d nodes.\n", Cudd_ReadKeys(dd) - Cudd_ReadDead(dd) ); + + // create the transition relation (dereferenced global BDDs) + bRelation = Abc_NtkTransitionRelation( dd, pNtk, fVerbose ); Cudd_Ref( bRelation ); + // create the initial state and the variable map + bInitial = Abc_NtkInitStateAndVarMap( dd, pNtk, fVerbose ); Cudd_Ref( bInitial ); + // compute the unreachable states + bUnreach = Abc_NtkComputeUnreachable( dd, pNtk, bRelation, bInitial, fVerbose ); Cudd_Ref( bUnreach ); + Cudd_RecursiveDeref( dd, bRelation ); + Cudd_RecursiveDeref( dd, bInitial ); + + // reorder and disable reordering + if ( fReorder ) + { + if ( fVerbose ) + fprintf( stdout, "BDD nodes in the unreachable states before reordering %d.\n", Cudd_DagSize(bUnreach) ); + Cudd_ReduceHeap( dd, CUDD_REORDER_SYMM_SIFT, 1 ); + Cudd_AutodynDisable( dd ); + if ( fVerbose ) + fprintf( stdout, "BDD nodes in the unreachable states after reordering %d.\n", Cudd_DagSize(bUnreach) ); + } + + // allocate ZDD variables + Cudd_zddVarsFromBddVars( dd, 2 ); + // create the EXDC network representing the unreachable states + pNtk->pExdc = Abc_NtkConstructExdc( dd, pNtk, bUnreach ); + Cudd_RecursiveDeref( dd, bUnreach ); + Extra_StopManager( dd ); + pNtk->pManGlob = NULL; + + // make sure that everything is okay + if ( fCheck && !Abc_NtkCheck( pNtk->pExdc ) ) + { + printf( "Abc_NtkExtractSequentialDcs: The network check has failed.\n" ); + Abc_NtkDelete( pNtk->pExdc ); + return 0; + } + return 1; +} + +/**Function************************************************************* + + Synopsis [Computes the transition relation of the network.] + + Description [Assumes that the global BDDs are computed.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NtkTransitionRelation( DdManager * dd, Abc_Ntk_t * pNtk, int fVerbose ) +{ + DdNode * bRel, * bTemp, * bProd, * bVar, * bInputs; + Abc_Obj_t * pNode; + int fReorder = 1; + int i; + + // extand the BDD manager to represent NS variables + assert( dd->size == Abc_NtkCiNum(pNtk) ); + Cudd_bddIthVar( dd, Abc_NtkCiNum(pNtk) + Abc_NtkLatchNum(pNtk) - 1 ); + + // enable reordering + if ( fReorder ) + Cudd_AutodynEnable( dd, CUDD_REORDER_SYMM_SIFT ); + else + Cudd_AutodynDisable( dd ); + + // compute the transition relation + bRel = b1; Cudd_Ref( bRel ); + Abc_NtkForEachLatch( pNtk, pNode, i ) + { + bVar = Cudd_bddIthVar( dd, Abc_NtkCiNum(pNtk) + i ); + bProd = Cudd_bddXnor( dd, bVar, pNtk->vFuncsGlob->pArray[i] ); Cudd_Ref( bProd ); + bRel = Cudd_bddAnd( dd, bTemp = bRel, bProd ); Cudd_Ref( bRel ); + Cudd_RecursiveDeref( dd, bTemp ); + Cudd_RecursiveDeref( dd, bProd ); + } + // free the global BDDs + Abc_NtkFreeGlobalBdds( pNtk ); + + // quantify the PI variables + bInputs = Extra_bddComputeRangeCube( dd, 0, Abc_NtkPiNum(pNtk) ); Cudd_Ref( bInputs ); + bRel = Cudd_bddExistAbstract( dd, bTemp = bRel, bInputs ); Cudd_Ref( bRel ); + Cudd_RecursiveDeref( dd, bTemp ); + Cudd_RecursiveDeref( dd, bInputs ); + + // reorder and disable reordering + if ( fReorder ) + { + if ( fVerbose ) + fprintf( stdout, "BDD nodes in the transition relation before reordering %d.\n", Cudd_DagSize(bRel) ); + Cudd_ReduceHeap( dd, CUDD_REORDER_SYMM_SIFT, 100 ); + Cudd_AutodynDisable( dd ); + if ( fVerbose ) + fprintf( stdout, "BDD nodes in the transition relation after reordering %d.\n", Cudd_DagSize(bRel) ); + } + Cudd_Deref( bRel ); + return bRel; +} + +/**Function************************************************************* + + Synopsis [Computes the initial state and sets up the variable map.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NtkInitStateAndVarMap( DdManager * dd, Abc_Ntk_t * pNtk, int fVerbose ) +{ + DdNode ** pbVarsX, ** pbVarsY; + DdNode * bTemp, * bProd, * bVar; + Abc_Obj_t * pLatch; + int i; + + // set the variable mapping for Cudd_bddVarMap() + pbVarsX = ALLOC( DdNode *, dd->size ); + pbVarsY = ALLOC( DdNode *, dd->size ); + bProd = b1; Cudd_Ref( bProd ); + Abc_NtkForEachLatch( pNtk, pLatch, i ) + { + pbVarsX[i] = dd->vars[ Abc_NtkPiNum(pNtk) + i ]; + pbVarsY[i] = dd->vars[ Abc_NtkCiNum(pNtk) + i ]; + // get the initial value of the latch + bVar = Cudd_NotCond( pbVarsX[i], !Abc_LatchIsInit1(pLatch) ); + bProd = Cudd_bddAnd( dd, bTemp = bProd, bVar ); Cudd_Ref( bProd ); + Cudd_RecursiveDeref( dd, bTemp ); + } + Cudd_SetVarMap( dd, pbVarsX, pbVarsY, Abc_NtkLatchNum(pNtk) ); + FREE( pbVarsX ); + FREE( pbVarsY ); + + Cudd_Deref( bProd ); + return bProd; +} + +/**Function************************************************************* + + Synopsis [Computes the set of unreachable states.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +DdNode * Abc_NtkComputeUnreachable( DdManager * dd, Abc_Ntk_t * pNtk, DdNode * bTrans, DdNode * bInitial, bool fVerbose ) +{ + DdNode * bRelation, * bReached, * bCubeCs; + DdNode * bCurrent, * bNext, * bTemp; + int nIters; + + // perform reachability analisys + bCurrent = bInitial; Cudd_Ref( bCurrent ); + bReached = bInitial; Cudd_Ref( bReached ); + bRelation = bTrans; Cudd_Ref( bRelation ); + bCubeCs = Extra_bddComputeRangeCube( dd, Abc_NtkPiNum(pNtk), Abc_NtkCiNum(pNtk) ); Cudd_Ref( bCubeCs ); + for ( nIters = 1; ; nIters++ ) + { + // compute the next states + bNext = Cudd_bddAndAbstract( dd, bRelation, bCurrent, bCubeCs ); Cudd_Ref( bNext ); + Cudd_RecursiveDeref( dd, bCurrent ); + // remap these states into the current state vars + bNext = Cudd_bddVarMap( dd, bTemp = bNext ); Cudd_Ref( bNext ); + Cudd_RecursiveDeref( dd, bTemp ); + // check if there are any new states + if ( Cudd_bddLeq( dd, bNext, bReached ) ) + break; + // get the new states + bCurrent = Cudd_bddAnd( dd, bNext, Cudd_Not(bReached) ); Cudd_Ref( bCurrent ); + // minimize the new states with the reached states +// bCurrent = Cudd_bddConstrain( dd, bTemp = bCurrent, Cudd_Not(bReached) ); Cudd_Ref( bCurrent ); +// Cudd_RecursiveDeref( dd, bTemp ); + // add to the reached states + bReached = Cudd_bddOr( dd, bTemp = bReached, bNext ); Cudd_Ref( bReached ); + Cudd_RecursiveDeref( dd, bTemp ); + Cudd_RecursiveDeref( dd, bNext ); + // minimize the transition relation +// bRelation = Cudd_bddConstrain( dd, bTemp = bRelation, Cudd_Not(bReached) ); Cudd_Ref( bRelation ); +// Cudd_RecursiveDeref( dd, bTemp ); + } + Cudd_RecursiveDeref( dd, bRelation ); + Cudd_RecursiveDeref( dd, bCubeCs ); + Cudd_RecursiveDeref( dd, bNext ); + // report the stats + if ( fVerbose ) + { + fprintf( stdout, "Reachability analysis completed in %d iterations.\n", nIters ); + fprintf( stdout, "The number of minterms in the reachable state set = %d.\n", + (int)Cudd_CountMinterm(dd, bReached, Abc_NtkLatchNum(pNtk) ) ); + } +//PRB( dd, bReached ); + Cudd_Deref( bReached ); + return Cudd_Not( bReached ); +} + +/**Function************************************************************* + + Synopsis [Creates the EXDC network.] + + Description [The set of unreachable states depends on CS variables.] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +Abc_Ntk_t * Abc_NtkConstructExdc( DdManager * dd, Abc_Ntk_t * pNtk, DdNode * bUnreach ) +{ + Abc_Ntk_t * pNtkNew; + Abc_Obj_t * pNode, * pNodeNew; + int * pPermute; + int i; + + // start the new network + pNtkNew = Abc_NtkAlloc( ABC_TYPE_LOGIC, ABC_FUNC_BDD ); + // create PIs corresponding to LOs + Abc_NtkForEachLatch( pNtk, pNode, i ) + pNode->pCopy = Abc_NtkCreatePi(pNtkNew); + + // create a new node + pNodeNew = Abc_NtkCreateNode(pNtkNew); + // add the fanins corresponding to latch outputs + Abc_NtkForEachLatch( pNtk, pNode, i ) + Abc_ObjAddFanin( pNodeNew, pNode->pCopy ); + + // create the logic function + pPermute = ALLOC( int, dd->size ); + for ( i = 0; i < dd->size; i++ ) + pPermute[i] = -1; + Abc_NtkForEachLatch( pNtk, pNode, i ) + pPermute[Abc_NtkPiNum(pNtk) + i] = i; + // remap the functions + pNodeNew->pData = Extra_TransferPermute( dd, pNtkNew->pManFunc, bUnreach, pPermute ); Cudd_Ref( pNodeNew->pData ); + free( pPermute ); + Abc_NodeMinimumBase( pNodeNew ); + + // make the new node drive all the COs + Abc_NtkForEachCo( pNtk, pNode, i ) + Abc_ObjAddFanin( Abc_NtkCreatePo(pNtkNew), pNodeNew ); + + // store the PI names of the EXDC network + Abc_NtkForEachLatch( pNtk, pNode, i ) + Abc_NtkLogicStoreName( Abc_NtkPi(pNtkNew,i), Abc_ObjName(pNode) ); + // store the PO names of the EXDC network + Abc_NtkForEachPo( pNtk, pNode, i ) + Abc_NtkLogicStoreName( Abc_NtkPo(pNtkNew,i), Abc_ObjName(pNode) ); + Abc_NtkForEachLatch( pNtk, pNode, i ) + Abc_NtkLogicStoreName( Abc_NtkCo(pNtkNew,Abc_NtkPoNum(pNtk) + i), Abc_ObjNameSuffix(pNode, "_in") ); + + // make the network minimum base + Abc_NtkMinimumBase( pNtkNew ); + + // fix the problem with complemented and duplicated CO edges + Abc_NtkLogicMakeSimpleCos( pNtkNew, 0 ); + + // transform the network to the SOP representation + Abc_NtkBddToSop( pNtkNew ); + return pNtkNew; +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abcVerify.c b/src/base/abci/abcVerify.c new file mode 100644 index 00000000..55d6cf7d --- /dev/null +++ b/src/base/abci/abcVerify.c @@ -0,0 +1,311 @@ +/**CFile**************************************************************** + + FileName [abcVerify.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [Combinational and sequential verification for two networks.] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abcVerify.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" +#include "fraig.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [Verifies combinational equivalence by brute-force SAT.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkCecSat( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2 ) +{ + Abc_Ntk_t * pMiter; + Abc_Ntk_t * pCnf; + int RetValue; + + // get the miter of the two networks + pMiter = Abc_NtkMiter( pNtk1, pNtk2, 1 ); + if ( pMiter == NULL ) + { + printf( "Miter computation has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pMiter ); + if ( RetValue == 1 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are NOT EQUIVALENT after structural hashing.\n" ); + return; + } + if ( RetValue == 0 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are equivalent after structural hashing.\n" ); + return; + } + + // convert the miter into a CNF + pCnf = Abc_NtkRenode( pMiter, 0, 100, 1, 0, 0 ); + Abc_NtkDelete( pMiter ); + if ( pCnf == NULL ) + { + printf( "Renoding for CNF has failed.\n" ); + return; + } + + // solve the CNF using the SAT solver + if ( Abc_NtkMiterSat( pCnf, 0 ) ) + printf( "Networks are NOT EQUIVALENT after SAT.\n" ); + else + printf( "Networks are equivalent after SAT.\n" ); + Abc_NtkDelete( pCnf ); +} + + +/**Function************************************************************* + + Synopsis [Verifies sequential equivalence by fraiging followed by SAT.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkCecFraig( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int fVerbose ) +{ + Fraig_Params_t Params; + Abc_Ntk_t * pMiter; + Abc_Ntk_t * pFraig; + int RetValue; + + // get the miter of the two networks + pMiter = Abc_NtkMiter( pNtk1, pNtk2, 1 ); + if ( pMiter == NULL ) + { + printf( "Miter computation has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pMiter ); + if ( RetValue == 1 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are NOT EQUIVALENT after structural hashing.\n" ); + return; + } + if ( RetValue == 0 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are equivalent after structural hashing.\n" ); + return; + } + + // convert the miter into a FRAIG + Fraig_ParamsSetDefault( &Params ); + Params.fVerbose = fVerbose; + pFraig = Abc_NtkFraig( pMiter, &Params, 0 ); + Abc_NtkDelete( pMiter ); + if ( pFraig == NULL ) + { + printf( "Fraiging has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pFraig ); + Abc_NtkDelete( pFraig ); + if ( RetValue == 0 ) + { + printf( "Networks are equivalent after fraiging.\n" ); + return; + } + printf( "Networks are NOT EQUIVALENT after fraiging.\n" ); +} + +/**Function************************************************************* + + Synopsis [Verifies sequential equivalence by brute-force SAT.] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkSecSat( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nFrames ) +{ + Abc_Ntk_t * pMiter; + Abc_Ntk_t * pFrames; + Abc_Ntk_t * pCnf; + int RetValue; + + // get the miter of the two networks + pMiter = Abc_NtkMiter( pNtk1, pNtk2, 0 ); + if ( pMiter == NULL ) + { + printf( "Miter computation has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pMiter ); + if ( RetValue == 1 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are NOT EQUIVALENT after structural hashing.\n" ); + return; + } + if ( RetValue == 0 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are equivalent after structural hashing.\n" ); + return; + } + + // create the timeframes + pFrames = Abc_NtkFrames( pMiter, nFrames, 1 ); + Abc_NtkDelete( pMiter ); + if ( pFrames == NULL ) + { + printf( "Frames computation has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pFrames ); + if ( RetValue == 1 ) + { + Abc_NtkDelete( pFrames ); + printf( "Networks are NOT EQUIVALENT after framing.\n" ); + return; + } + if ( RetValue == 0 ) + { + Abc_NtkDelete( pFrames ); + printf( "Networks are equivalent after framing.\n" ); + return; + } + + // convert the miter into a CNF + pCnf = Abc_NtkRenode( pFrames, 0, 100, 1, 0, 0 ); + Abc_NtkDelete( pFrames ); + if ( pCnf == NULL ) + { + printf( "Renoding for CNF has failed.\n" ); + return; + } + + // solve the CNF using the SAT solver + if ( Abc_NtkMiterSat( pCnf, 0 ) ) + printf( "Networks are NOT EQUIVALENT after SAT.\n" ); + else + printf( "Networks are equivalent after SAT.\n" ); + Abc_NtkDelete( pCnf ); +} + +/**Function************************************************************* + + Synopsis [Verifies combinational equivalence by fraiging followed by SAT] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Abc_NtkSecFraig( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nFrames ) +{ + Fraig_Params_t Params; + Abc_Ntk_t * pMiter; + Abc_Ntk_t * pFraig; + Abc_Ntk_t * pFrames; + int RetValue; + + // get the miter of the two networks + pMiter = Abc_NtkMiter( pNtk1, pNtk2, 0 ); + if ( pMiter == NULL ) + { + printf( "Miter computation has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pMiter ); + if ( RetValue == 1 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are NOT EQUIVALENT after structural hashing.\n" ); + return; + } + if ( RetValue == 0 ) + { + Abc_NtkDelete( pMiter ); + printf( "Networks are equivalent after structural hashing.\n" ); + return; + } + + // create the timeframes + pFrames = Abc_NtkFrames( pMiter, nFrames, 1 ); + Abc_NtkDelete( pMiter ); + if ( pFrames == NULL ) + { + printf( "Frames computation has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pFrames ); + if ( RetValue == 1 ) + { + Abc_NtkDelete( pFrames ); + printf( "Networks are NOT EQUIVALENT after framing.\n" ); + return; + } + if ( RetValue == 0 ) + { + Abc_NtkDelete( pFrames ); + printf( "Networks are equivalent after framing.\n" ); + return; + } + + // convert the miter into a FRAIG + Fraig_ParamsSetDefault( &Params ); + pFraig = Abc_NtkFraig( pFrames, &Params, 0 ); + Abc_NtkDelete( pFrames ); + if ( pFraig == NULL ) + { + printf( "Fraiging has failed.\n" ); + return; + } + RetValue = Abc_NtkMiterIsConstant( pFraig ); + Abc_NtkDelete( pFraig ); + if ( RetValue == 0 ) + { + printf( "Networks are equivalent after fraiging.\n" ); + return; + } + printf( "Networks are NOT EQUIVALENT after fraiging.\n" ); +} + + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/abc_.c b/src/base/abci/abc_.c new file mode 100644 index 00000000..bef3836f --- /dev/null +++ b/src/base/abci/abc_.c @@ -0,0 +1,47 @@ +/**CFile**************************************************************** + + FileName [abc_.c] + + SystemName [ABC: Logic synthesis and verification system.] + + PackageName [Network and node package.] + + Synopsis [] + + Author [Alan Mishchenko] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - June 20, 2005.] + + Revision [$Id: abc_.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $] + +***********************************************************************/ + +#include "abc.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + diff --git a/src/base/abci/module.make b/src/base/abci/module.make new file mode 100644 index 00000000..d7c0add2 --- /dev/null +++ b/src/base/abci/module.make @@ -0,0 +1,24 @@ +SRC += src/base/abci/abc.c \ + src/base/abci/abcAttach.c \ + src/base/abci/abcBalance.c \ + src/base/abci/abcCollapse.c \ + src/base/abci/abcCut.c \ + src/base/abci/abcDsd.c \ + src/base/abci/abcFpga.c \ + src/base/abci/abcFraig.c \ + src/base/abci/abcFxu.c \ + src/base/abci/abcMap.c \ + src/base/abci/abcMiter.c \ + src/base/abci/abcNtbdd.c \ + src/base/abci/abcPrint.c \ + src/base/abci/abcReconv.c \ + src/base/abci/abcRefactor.c \ + src/base/abci/abcRenode.c \ + src/base/abci/abcRewrite.c \ + src/base/abci/abcSat.c \ + src/base/abci/abcStrash.c \ + src/base/abci/abcSweep.c \ + src/base/abci/abcSymm.c \ + src/base/abci/abcTiming.c \ + src/base/abci/abcUnreach.c \ + src/base/abci/abcVerify.c |