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ice40: Use dfflegalize.

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This commit is contained in:
Marcelina Kościelnicka 2020-07-03 00:21:24 +02:00
parent 01772dec8c
commit 1fc8c3a0d1
4 changed files with 24 additions and 208 deletions
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9
techlibs/ice40/synth_ice40.cc
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@ -358,15 +358,14 @@ struct SynthIce40Pass : public ScriptPass
run("dff2dffe -direct-match $_DFF_*");
if (min_ce_use >= 0) {
run("opt_merge");
run(stringf("dff2dffe -unmap-mince %d", min_ce_use));
run("simplemap t:$dff");
}
if ((abc9 && dff) || help_mode)
run("zinit -all w:* t:$_DFF_?_ t:$_DFFE_??_ t:$_SDFF*", "(only if -abc9 and -dff");
if (nodffe)
run(stringf("dfflegalize -cell $_DFF_?_ 0 -cell $_DFF_?P?_ 0 -cell $_SDFF_?P?_ 0 -cell $_DLATCH_?_ x"));
else
run(stringf("dfflegalize -cell $_DFF_?_ 0 -cell $_DFFE_?P_ 0 -cell $_DFF_?P?_ 0 -cell $_DFFE_?P?P_ 0 -cell $_SDFF_?P?_ 0 -cell $_SDFFCE_?P?P_ 0 -cell $_DLATCH_?_ x -mince %d", min_ce_use));
run("techmap -map +/ice40/ff_map.v");
run("opt_expr -mux_undef");
run("simplemap");
run("ice40_ffinit");
run("ice40_ffssr");
run("ice40_opt -full");
}