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Diffstat (limited to 'abc70930/src/map/super/super.c')
| -rw-r--r-- | abc70930/src/map/super/super.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/abc70930/src/map/super/super.c b/abc70930/src/map/super/super.c new file mode 100644 index 00000000..97420c5c --- /dev/null +++ b/abc70930/src/map/super/super.c @@ -0,0 +1,319 @@ +/**CFile**************************************************************** + + FileName [super.c] + + PackageName [MVSIS 1.3: Multi-valued logic synthesis system.] + + Synopsis [Pre-computation of supergates.] + + Author [MVSIS Group] + + Affiliation [UC Berkeley] + + Date [Ver. 1.0. Started - August 18, 2003.] + + Revision [$Id: super.c,v 1.6 2004/10/30 20:51:11 satrajit Exp $] + +***********************************************************************/ + +#include "superInt.h" +#include "mainInt.h" +#include "mio.h" + +//////////////////////////////////////////////////////////////////////// +/// DECLARATIONS /// +//////////////////////////////////////////////////////////////////////// + +static int Super_CommandSupergates ( Abc_Frame_t * pAbc, int argc, char **argv ); +static int Super_CommandSupergatesAnd( Abc_Frame_t * pAbc, int argc, char **argv ); + +//////////////////////////////////////////////////////////////////////// +/// FUNCTION DEFINITIONS /// +//////////////////////////////////////////////////////////////////////// + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Super_Init( Abc_Frame_t * pAbc ) +{ + Cmd_CommandAdd( pAbc, "SC mapping", "super", Super_CommandSupergates, 0 ); + Cmd_CommandAdd( pAbc, "SC mapping", "super2", Super_CommandSupergatesAnd, 0 ); +} + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +void Super_End() +{ +} + + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Super_CommandSupergatesAnd( Abc_Frame_t * pAbc, int argc, char **argv ) +{ + FILE * pOut, * pErr; + int nVarsMax, nLevels; + int fVerbose; + int c; + + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set the defaults + nVarsMax = 4; + nLevels = 3; + fVerbose = 0; + Extra_UtilGetoptReset(); + while ( (c = Extra_UtilGetopt(argc, argv, "ilvh")) != EOF ) + { + switch (c) + { + case 'i': + nVarsMax = atoi(argv[globalUtilOptind]); + globalUtilOptind++; + if ( nVarsMax < 0 ) + goto usage; + break; + case 'l': + nLevels = atoi(argv[globalUtilOptind]); + globalUtilOptind++; + if ( nLevels < 0 ) + goto usage; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + break; + default: + goto usage; + } + } + + Super2_Precompute( nVarsMax, nLevels, fVerbose ); + + return 0; + +usage: + fprintf( pErr, "usage: super2 [-i num] [-l num] [-vh]\n"); + fprintf( pErr, "\t precomputes the supergates composed of AND2s and INVs\n" ); + fprintf( pErr, "\t-i num : the max number of inputs to the supergate [default = %d]\n", nVarsMax ); + fprintf( pErr, "\t-l num : the max number of logic levels of gates [default = %d]\n", nLevels ); + fprintf( pErr, "\t-v : enable verbose output\n"); + fprintf( pErr, "\t-h : print the help message\n"); + return 1; /* error exit */ +} + + +/**Function************************************************************* + + Synopsis [] + + Description [] + + SideEffects [] + + SeeAlso [] + +***********************************************************************/ +int Super_CommandSupergates( Abc_Frame_t * pAbc, int argc, char **argv ) +{ + FILE * pFile; + FILE * pOut, * pErr; + Mio_Library_t * pLib; + char * FileName, * ExcludeFile; + float DelayLimit; + float AreaLimit; + bool fSkipInvs; + bool fWriteOldFormat; + int nVarsMax, nLevels, TimeLimit; + int fVerbose; + int c; + + pOut = Abc_FrameReadOut(pAbc); + pErr = Abc_FrameReadErr(pAbc); + + // set the defaults + nVarsMax = 5; + nLevels = 3; + DelayLimit = 3.5; + AreaLimit = 9; + TimeLimit = 10; + fSkipInvs = 1; + fVerbose = 0; + fWriteOldFormat = 0; + ExcludeFile = 0; + + Extra_UtilGetoptReset(); + while ( (c = Extra_UtilGetopt(argc, argv, "eiltdasovh")) != EOF ) + { + switch (c) + { + case 'e': + ExcludeFile = argv[globalUtilOptind]; + if ( ExcludeFile == 0 ) + goto usage; + globalUtilOptind++; + break; + case 'i': + nVarsMax = atoi(argv[globalUtilOptind]); + globalUtilOptind++; + if ( nVarsMax < 0 ) + goto usage; + break; + case 'l': + nLevels = atoi(argv[globalUtilOptind]); + globalUtilOptind++; + if ( nLevels < 0 ) + goto usage; + break; + case 't': + TimeLimit = atoi(argv[globalUtilOptind]); + globalUtilOptind++; + if ( TimeLimit < 0 ) + goto usage; + break; + case 'd': + DelayLimit = (float)atof(argv[globalUtilOptind]); + globalUtilOptind++; + if ( DelayLimit <= 0.0 ) + goto usage; + break; + case 'a': + AreaLimit = (float)atof(argv[globalUtilOptind]); + globalUtilOptind++; + if ( AreaLimit <= 0.0 ) + goto usage; + break; + case 's': + fSkipInvs ^= 1; + break; + case 'o': + fWriteOldFormat ^= 1; + break; + case 'v': + fVerbose ^= 1; + break; + case 'h': + goto usage; + break; + default: + goto usage; + } + } + + + if ( argc != globalUtilOptind + 1 ) + { + fprintf( pErr, "The GENLIB library file should be given on the command line.\n" ); + goto usage; + } + + if ( nVarsMax < 2 || nVarsMax > 6 ) + { + fprintf( pErr, "The max number of variables (%d) should be more than 1 and less than 7.\n", nVarsMax ); + goto usage; + } + + // get the input file name + FileName = argv[globalUtilOptind]; + if ( (pFile = Io_FileOpen( FileName, "open_path", "r", 0 )) == NULL ) +// if ( (pFile = fopen( FileName, "r" )) == NULL ) + { + fprintf( pErr, "Cannot open input file \"%s\". ", FileName ); + if (( FileName = Extra_FileGetSimilarName( FileName, ".genlib", ".lib", ".gen", ".g", NULL ) )) + fprintf( pErr, "Did you mean \"%s\"?", FileName ); + fprintf( pErr, "\n" ); + return 1; + } + fclose( pFile ); + + // set the new network + pLib = Mio_LibraryRead( pAbc, FileName, ExcludeFile, fVerbose ); + if ( pLib == NULL ) + { + fprintf( pErr, "Reading library has failed.\n" ); + goto usage; + } + + // compute the gates + Super_Precompute( pLib, nVarsMax, nLevels, DelayLimit, AreaLimit, TimeLimit, fSkipInvs, fWriteOldFormat, fVerbose ); + + // delete the library + Mio_LibraryDelete( pLib ); + return 0; + +usage: + fprintf( pErr, "usage: super [-i num] [-l num] [-d float] [-a float] [-t num] [-sovh] <genlib_file>\n"); + fprintf( pErr, "\t precomputes the supergates for the given GENLIB library\n" ); + fprintf( pErr, "\t-i num : the max number of supergate inputs [default = %d]\n", nVarsMax ); + fprintf( pErr, "\t-l num : the max number of levels of gates [default = %d]\n", nLevels ); + fprintf( pErr, "\t-d float : the max delay of the supergates [default = %.2f]\n", DelayLimit ); + fprintf( pErr, "\t-a float : the max area of the supergates [default = %.2f]\n", AreaLimit ); + fprintf( pErr, "\t-t num : the approximate runtime limit in seconds [default = %d]\n", TimeLimit ); + fprintf( pErr, "\t-s : toggle the use of inverters at the inputs [default = %s]\n", (fSkipInvs? "no": "yes") ); + fprintf( pErr, "\t-o : toggle dumping the supergate library in old format [default = %s]\n", (fWriteOldFormat? "yes": "no") ); + fprintf( pErr, "\t-e file : file contains list of genlib gates to exclude\n" ); + fprintf( pErr, "\t-v : enable verbose output [default = %s]\n", (fVerbose? "yes" : "no") ); + fprintf( pErr, "\t-h : print the help message\n"); + fprintf( pErr, "\n"); + fprintf( pErr, "\tHere is a piece of advice on precomputing supergate libraries:\n"); + fprintf( pErr, "\t\n"); + fprintf( pErr, "\tStart with the number of inputs equal to 5 (-i 5), the number of \n"); + fprintf( pErr, "\tlevels equal to 3 (-l 3), the delay equal to 2-3 delays of inverter, \n"); + fprintf( pErr, "\tthe area equal to 3-4 areas of two input NAND, and runtime limit equal \n"); + fprintf( pErr, "\tto 10 seconds (-t 10). Run precomputation and learn from the result.\n"); + fprintf( pErr, "\tDetermine what parameter is most constraining and try to increase \n"); + fprintf( pErr, "\tthe value of that parameter. The goal is to have a well-balanced\n"); + fprintf( pErr, "\tset of constraints and the resulting supergate library containing\n"); + fprintf( pErr, "\tapproximately 100K-200K supergates. Typically, it is better to increase\n"); + fprintf( pErr, "\tdelay limit rather than area limit, because having large-area supergates\n"); + fprintf( pErr, "\tmay result in a considerable increase in area.\n"); + fprintf( pErr, "\t\n"); + fprintf( pErr, "\tNote that a good supergate library for experiments typically can be \n"); + fprintf( pErr, "\tprecomputed in 30 sec. Increasing the runtime limit makes sense when\n"); + fprintf( pErr, "\tother parameters are well-balanced and it is needed to enumerate more\n"); + fprintf( pErr, "\tchoices to have a good result. In the end, to compute the final library\n"); + fprintf( pErr, "\tthe runtime can be set to 300 sec to ensure the ultimate quality.\n"); + fprintf( pErr, "\tIn some cases, the runtime has to be reduced if the supergate library\n"); + fprintf( pErr, "\tcontains too many supergates (> 500K).\n"); + fprintf( pErr, "\t\n"); + fprintf( pErr, "\tWhen precomputing libraries of 6 inputs (-i 6), start with even more \n"); + fprintf( pErr, "\trestricted parameters and gradually increase them until the goal is met.\n"); + fprintf( pErr, "\t\n"); + return 1; /* error exit */ +} + +//////////////////////////////////////////////////////////////////////// +/// END OF FILE /// +//////////////////////////////////////////////////////////////////////// + + |