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abc9_ops: add -prep_bypass for auto bypass boxes; refactor

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Eliminate need for abc9_{,un}map.v in xilinx
-prep_dff_{hier,unmap} -> -prep_hier
This commit is contained in:
Eddie Hung 2020-04-21 12:22:39 -07:00
parent bb840cca9c
commit 7cd3f4a79b
11 changed files with 714 additions and 988 deletions
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2
techlibs/ice40/synth_ice40.cc
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@ -362,7 +362,7 @@ struct SynthIce40Pass : public ScriptPass
run("simplemap t:$dff");
}
if ((abc9 && dff) || help_mode)
run("zinit -all", "(-abc9 and -dff only)");
run("zinit -all t:$_DFF_?_ t:$_DFFE_??_ t:$__DFFS*", "(only if -abc9 and -dff");
run("techmap -map +/ice40/ff_map.v");
run("opt_expr -mux_undef");
run("simplemap");