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gatemate: Add LUT tree library script

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Co-authored-by: Claire Xenia Wolf <claire@clairexen.net>
Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2021-12-07 13:41:39 +00:00 • committed by myrtle
parent 7c756c9959
commit 38a24ec5cc
6 changed files with 591 additions and 6 deletions
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32
techlibs/gatemate/synth_gatemate.cc
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@ -67,7 +67,10 @@ struct SynthGateMatePass : public ScriptPass
log("\n");
log(" -nomx8, -nomx4\n");
log(" do not use CC_MX{8,4} multiplexer cells in output netlist.\n");
log("\n");;
log("\n");
log(" -luttree\n");
log(" use new LUT tree mapping approach (EXPERIMENTAL).\n");
log("\n");
log(" -dff\n");
log(" run 'abc' with -dff option\n");
log("\n");
@ -87,7 +90,7 @@ struct SynthGateMatePass : public ScriptPass
}
string top_opt, vlog_file, json_file;
bool noflatten, nobram, noaddf, nomult, nomx4, nomx8, dff, retime, noiopad, noclkbuf;
bool noflatten, nobram, noaddf, nomult, nomx4, nomx8, luttree, dff, retime, noiopad, noclkbuf;
void clear_flags() override
{
@ -100,6 +103,7 @@ struct SynthGateMatePass : public ScriptPass
nomult = false;
nomx4 = false;
nomx8 = false;
luttree = false;
dff = false;
retime = false;
noiopad = false;
@ -158,6 +162,10 @@ struct SynthGateMatePass : public ScriptPass
nomx8 = true;
continue;
}
if (args[argidx] == "-luttree") {
luttree = true;
continue;
}
if (args[argidx] == "-dff") {
dff = true;
continue;
@ -298,11 +306,23 @@ struct SynthGateMatePass : public ScriptPass
if (check_label("map_luts"))
{
std::string abc_args = " -dress -lut 4";
if (dff) {
abc_args += " -dff";
if (luttree || help_mode) {
std::string abc_args = " -genlib +/gatemate/lut_tree_cells.genlib";
if (dff) {
abc_args += " -dff";
}
run("abc " + abc_args, "(with -luttree)");
run("techmap -map +/gatemate/lut_tree_map.v", "(with -luttree)");
run("gatemate_foldinv", "(with -luttree)");
run("techmap -map +/gatemate/inv_map.v", "(with -luttree)");
}
if (!luttree || help_mode) {
std::string abc_args = " -dress -lut 4";
if (dff) {
abc_args += " -dff";
}
run("abc " + abc_args, "(without -luttree)");
}
run("abc " + abc_args);
run("clean");
}