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read_verilog: add -relativeshare for synthesis reproducibility testing

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This commit is contained in:
Emil J. Tywoniak 2025-09-03 01:57:17 +02:00
parent 6c4d00ca7a
commit f8630d0777
5 changed files with 51 additions and 11 deletions
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30
techlibs/common/synth.cc
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@ -98,13 +98,17 @@ struct SynthPass : public ScriptPass {
log(" mapping library in the `techmap` step. this option can be\n");
log(" repeated.\n");
log("\n");
log(" -relativeshare\n");
log(" use paths relative to share directory for source locations\n");
log(" where possible (experimental).\n");
log("\n");
log("The following commands are executed by this synthesis command:\n");
help_script();
log("\n");
}
string top_module, fsm_opts, memory_opts, abc;
bool autotop, flatten, noalumacc, nofsm, noabc, noshare, flowmap, booth, hieropt;
bool autotop, flatten, noalumacc, nofsm, noabc, noshare, flowmap, booth, hieropt, relative_share;
int lut;
std::vector<std::string> techmap_maps;
@ -124,6 +128,7 @@ struct SynthPass : public ScriptPass {
flowmap = false;
booth = false;
hieropt = false;
relative_share = false;
abc = "abc";
techmap_maps.clear();
}
@ -211,6 +216,11 @@ struct SynthPass : public ScriptPass {
hieropt = true;
continue;
}
if (args[argidx] == "-relativeshare") {
relative_share = true;
log_experimental("synth -relativeshare");
continue;
}
break;
}
extra_args(args, argidx, design);
@ -239,6 +249,10 @@ struct SynthPass : public ScriptPass {
else
hieropt_flag = hieropt ? " -hier" : "";
std::string techmap_cmd = "techmap";
if (relative_share)
techmap_cmd += " -relativeshare";
if (check_label("begin")) {
if (help_mode) {
run("hierarchy -check [-top <top> | -auto-top]");
@ -268,9 +282,9 @@ struct SynthPass : public ScriptPass {
run("peepopt");
run("opt_clean");
if (help_mode)
run("techmap -map +/cmp2lut.v -map +/cmp2lcu.v", " (if -lut)");
run(techmap_cmd + " -map +/cmp2lut.v -map +/cmp2lcu.v", " (if -lut)");
else if (lut)
run(stringf("techmap -map +/cmp2lut.v -map +/cmp2lcu.v -D LUT_WIDTH=%d", lut));
run(stringf("%s -map +/cmp2lut.v -map +/cmp2lcu.v -D LUT_WIDTH=%d", techmap_cmd, lut));
if (booth || help_mode)
run("booth", " (if -booth)");
if (!noalumacc)
@ -287,22 +301,22 @@ struct SynthPass : public ScriptPass {
run("memory_map");
run("opt -full");
if (help_mode) {
run("techmap", " (unless -extra-map)");
run("techmap -map +/techmap.v -map <inject>", " (if -extra-map)");
run(techmap_cmd, " (unless -extra-map)");
run(techmap_cmd + " -map +/techmap.v -map <inject>", " (if -extra-map)");
} else {
std::string techmap_opts;
if (!techmap_maps.empty())
techmap_opts += " -map +/techmap.v";
for (auto fn : techmap_maps)
techmap_opts += stringf(" -map %s", fn.c_str());
run("techmap" + techmap_opts);
run(techmap_cmd + techmap_opts);
}
if (help_mode) {
run("techmap -map +/gate2lut.v", "(if -noabc and -lut)");
run(techmap_cmd + " -map +/gate2lut.v", "(if -noabc and -lut)");
run("clean; opt_lut", " (if -noabc and -lut)");
run("flowmap -maxlut K", " (if -flowmap and -lut)");
} else if (noabc && lut) {
run(stringf("techmap -map +/gate2lut.v -D LUT_WIDTH=%d", lut));
run(stringf("%s -map +/gate2lut.v -D LUT_WIDTH=%d", techmap_cmd, lut));
run("clean; opt_lut");
} else if (flowmap) {
run(stringf("flowmap -maxlut %d", lut));