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Add FIXME about need for -mux4

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This commit is contained in:
Eddie Hung 2019-06-21 11:15:23 -07:00
parent c6b4653ebe
commit f433a52374
2 changed files with 4 additions and 2 deletions
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2
techlibs/xilinx/synth_xilinx.cc
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@ -275,6 +275,8 @@ struct SynthXilinxPass : public ScriptPass
run("dff2dffe");
if (!nomux || help_mode) {
run("simplemap t:$mux", " (skip if -nomux)");
// FIXME: Must specify mux4, even if we don't need it,
// otherwise it will use mux8 as mux4
run("muxcover -mux4=150 -mux8=200 -mux16=250 -dmux=0", "(skip if -nomux)");
}
run("opt -full");