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-rw-r--r--techlibs/gowin/synth_gowin.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/techlibs/gowin/synth_gowin.cc b/techlibs/gowin/synth_gowin.cc
index f7a5006bc..4d32f62d4 100644
--- a/techlibs/gowin/synth_gowin.cc
+++ b/techlibs/gowin/synth_gowin.cc
@@ -196,6 +196,7 @@ struct SynthGowinPass : public ScriptPass
run("opt_clean");
if (!nodffe)
run("dff2dffe -direct-match $_DFF_* -direct-match $__DFFS_*");
+ run("muxcover -mux4");
run("techmap -map +/gowin/cells_map.v");
run("opt_expr -mux_undef");
run("simplemap");