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-rw-r--r--techlibs/xilinx/synth_xilinx.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index ede2bda10..db3f5b7e4 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -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");