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| author | Eddie Hung <eddie@fpgeh.com> | 2019-12-30 12:05:52 -0800 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-12-30 13:28:29 -0800 |
| commit | c9e3b26412d6e5c5405f131b7526dec632fbb315 (patch) | |
| tree | 6d89b9168f5bec35f2c585fad2caea5d43da5c64 /techlibs/gowin/synth_gowin.cc | |
| parent | aa6d06c1b5b0083096ad547b0ad2600fcdc854f4 (diff) | |
| download | yosys-c9e3b26412d6e5c5405f131b7526dec632fbb315.tar.gz yosys-c9e3b26412d6e5c5405f131b7526dec632fbb315.tar.bz2 yosys-c9e3b26412d6e5c5405f131b7526dec632fbb315.zip | |
Disable synth_gowin -abc9 as it offers no advantages yet
Diffstat (limited to 'techlibs/gowin/synth_gowin.cc')
| -rw-r--r-- | techlibs/gowin/synth_gowin.cc | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/techlibs/gowin/synth_gowin.cc b/techlibs/gowin/synth_gowin.cc index 5acc096a3..8431473f0 100644 --- a/techlibs/gowin/synth_gowin.cc +++ b/techlibs/gowin/synth_gowin.cc @@ -62,16 +62,16 @@ struct SynthGowinPass : public ScriptPass log(" do not flatten design before synthesis\n"); log("\n"); log(" -retime\n"); - log(" run 'abc' with -dff option\n"); + log(" run 'abc' with '-dff -D 1' options\n"); log("\n"); log(" -nowidelut\n"); log(" do not use muxes to implement LUTs larger than LUT4s\n"); log("\n"); log(" -noiopads\n"); log(" do not emit IOB at top level ports\n"); - log("\n"); - log(" -abc9\n"); - log(" use new ABC9 flow (EXPERIMENTAL)\n"); + //log("\n"); + //log(" -abc9\n"); + //log(" use new ABC9 flow (EXPERIMENTAL)\n"); log("\n"); log("\n"); log("The following commands are executed by this synthesis command:\n"); @@ -144,10 +144,10 @@ struct SynthGowinPass : public ScriptPass nowidelut = true; continue; } - if (args[argidx] == "-abc9") { - abc9 = true; - continue; - } + //if (args[argidx] == "-abc9") { + // abc9 = true; + // continue; + //} if (args[argidx] == "-noiopads") { noiopads = true; continue; @@ -227,13 +227,13 @@ struct SynthGowinPass : public ScriptPass if (check_label("map_luts")) { - if (nowidelut && abc9) { + /*if (nowidelut && abc9) { run("abc9 -lut 4"); - } else if (nowidelut && !abc9) { + } else*/ if (nowidelut && !abc9) { run("abc -lut 4"); - } else if (!nowidelut && abc9) { + } else /*if (!nowidelut && abc9) { run("abc9 -lut 4:8"); - } else if (!nowidelut && !abc9) { + } else*/ if (!nowidelut && !abc9) { run("abc -lut 4:8"); } run("clean"); |