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-rw-r--r--techlibs/ecp5/synth_ecp5.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/techlibs/ecp5/synth_ecp5.cc b/techlibs/ecp5/synth_ecp5.cc
index 45f101451..4b889d672 100644
--- a/techlibs/ecp5/synth_ecp5.cc
+++ b/techlibs/ecp5/synth_ecp5.cc
@@ -242,7 +242,7 @@ struct SynthEcp5Pass : public ScriptPass
else
run("techmap -map +/techmap.v -map +/ecp5/arith_map.v");
if (retime || help_mode)
- run("abc -dff -D 1", "(only if -retime)");
+ run("abc -dff", "(only if -retime)");
}
if (check_label("map_ffs"))