ecp5: Pass -nomfs to abc9

Fixes #1459

Signed-off-by: David Shah <dave@ds0.me>

diff --git a/techlibs/ecp5/synth_ecp5.cc b/techlibs/ecp5/synth_ecp5.cc
index a79dee31f553012189433acdea70779edc2b8089..800a8ce221736e6b0a3b2f97a675377426db5323 100644 (file)
--- a/techlibs/ecp5/synth_ecp5.cc
+++ b/techlibs/ecp5/synth_ecp5.cc
@@ -314,9 +314,9 @@ struct SynthEcp5Pass : public ScriptPass
                        if (abc9) {
                                run("read_verilog -icells -lib +/ecp5/abc9_model.v");
                                if (nowidelut)
-                                       run("abc9 -lut +/ecp5/abc9_5g_nowide.lut -box +/ecp5/abc9_5g.box -W 200");
+                                       run("abc9 -lut +/ecp5/abc9_5g_nowide.lut -box +/ecp5/abc9_5g.box -W 200 -nomfs");
                                else
-                                       run("abc9 -lut +/ecp5/abc9_5g.lut -box +/ecp5/abc9_5g.box -W 200");
+                                       run("abc9 -lut +/ecp5/abc9_5g.lut -box +/ecp5/abc9_5g.box -W 200 -nomfs");
                                run("techmap -map +/ecp5/abc9_unmap.v");
                        } else {
                                if (nowidelut)