diff options
Diffstat (limited to 'techlibs')
| -rw-r--r-- | techlibs/common/synth.cc | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/techlibs/common/synth.cc b/techlibs/common/synth.cc index c3e7288db..f6853651e 100644 --- a/techlibs/common/synth.cc +++ b/techlibs/common/synth.cc @@ -58,6 +58,13 @@ struct SynthPass : public Pass { log(" -noabc\n"); log(" do not run abc (as if yosys was compiled without ABC support)\n"); log("\n"); + log(" -noalumacc\n"); + log(" do not run 'alumacc' pass. i.e. keep arithmetic operators in\n"); + log(" their direct form ($add, $sub, etc.).\n"); + log("\n"); + log(" -nordff\n"); + log(" passed to 'memory'. prohibits merging of FFs into memory read ports\n"); + log("\n"); log(" -run <from_label>[:<to_label>]\n"); log(" only run the commands between the labels (see below). an empty\n"); log(" from label is synonymous to 'begin', and empty to label is\n"); @@ -102,8 +109,9 @@ struct SynthPass : public Pass { } virtual void execute(std::vector<std::string> args, RTLIL::Design *design) { - std::string top_module, fsm_opts; + std::string top_module, fsm_opts, memory_opts; std::string run_from, run_to; + bool noalumacc = false; bool noabc = false; size_t argidx; @@ -132,6 +140,14 @@ struct SynthPass : public Pass { noabc = true; continue; } + if (args[argidx] == "-noalumacc") { + noalumacc = true; + continue; + } + if (args[argidx] == "-nordff") { + memory_opts += " -nordff"; + continue; + } break; } extra_args(args, argidx, design); @@ -159,12 +175,13 @@ struct SynthPass : public Pass { Pass::call(design, "check"); Pass::call(design, "opt"); Pass::call(design, "wreduce"); - Pass::call(design, "alumacc"); + if (!noalumacc) + Pass::call(design, "alumacc"); Pass::call(design, "share"); Pass::call(design, "opt"); Pass::call(design, "fsm" + fsm_opts); Pass::call(design, "opt -fast"); - Pass::call(design, "memory -nomap"); + Pass::call(design, "memory -nomap" + memory_opts); Pass::call(design, "opt_clean"); } |