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Restore abc9 -keepff

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This commit is contained in:
Eddie Hung 2020-01-01 08:34:43 -08:00
parent ac808c5e2a
commit c40b1aae42
4 changed files with 43 additions and 125 deletions
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4
techlibs/xilinx/synth_xilinx.cc
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@ -108,7 +108,7 @@ struct SynthXilinxPass : public ScriptPass
log(" flatten design before synthesis\n");
log("\n");
log(" -dff\n");
log(" run 'abc9' with -dff option\n");
log(" enable sequential synthesis with 'abc9'\n");
log("\n");
log(" -retime\n");
log(" run 'abc' with -dff option\n");
@ -559,6 +559,8 @@ struct SynthXilinxPass : public ScriptPass
abc9_opts += " -lut +/xilinx/abc9_xc7_nowide.lut";
else
abc9_opts += " -lut +/xilinx/abc9_xc7.lut";
if (!dff_mode)
abc9_opts += " -keepff";
run("abc9" + abc9_opts);
run("techmap -map +/xilinx/abc9_unmap.v");
}