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synth: Introduce -inject for amending techmap

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This commit is contained in:
Martin Povišer 2024-02-22 17:23:28 +01:00
parent d77b792156
commit ba07cba6ce
1 changed files with 21 additions and 2 deletions
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23
techlibs/common/synth.cc
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@ -88,6 +88,10 @@ struct SynthPass : public ScriptPass {
log(" read/write collision\" (same result as setting the no_rw_check\n");
log(" attribute on all memories).\n");
log("\n");
log(" -inject filename\n");
log(" inject rules from the given file to complement the default\n");
log(" mapping library in the `techmap` step. this option can be\n");
log(" repeated.\n");
log("\n");
log("The following commands are executed by this synthesis command:\n");
help_script();
@ -96,8 +100,8 @@ struct SynthPass : public ScriptPass {
string top_module, fsm_opts, memory_opts, abc;
bool autotop, flatten, noalumacc, nofsm, noabc, noshare, flowmap, booth;
int lut;
std::vector<std::string> techmap_inject;
void clear_flags() override
{
@ -115,6 +119,7 @@ struct SynthPass : public ScriptPass {
flowmap = false;
booth = false;
abc = "abc";
techmap_inject.clear();
}
void execute(std::vector<std::string> args, RTLIL::Design *design) override
@ -192,6 +197,10 @@ struct SynthPass : public ScriptPass {
memory_opts += " -no-rw-check";
continue;
}
if (args[argidx] == "-inject" && argidx + 1 < args.size()) {
techmap_inject.push_back(args[++argidx]);
continue;
}
break;
}
extra_args(args, argidx, design);
@ -261,7 +270,17 @@ struct SynthPass : public ScriptPass {
run("opt -fast -full");
run("memory_map");
run("opt -full");
run("techmap");
if (help_mode) {
run("techmap", " (unless -inject)");
run("techmap -map +/techmap.v -map <inject>", " (if -inject)");
} else {
std::string techmap_opts;
if (!techmap_inject.empty())
techmap_opts += " -map +/techmap.v";
for (auto fn : techmap_inject)
techmap_opts += stringf(" -map %s", fn.c_str());
run("techmap" + techmap_opts);
}
if (help_mode) {
run("techmap -map +/gate2lut.v", "(if -noabc and -lut)");
run("clean; opt_lut", " (if -noabc and -lut)");