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coolrunner2: Use extract_counter to optimize counters

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This tends to make much more efficient pterm usage compared to just
throwing the problem at ABC
This commit is contained in:
R. Ou 2020-02-17 03:07:16 -08:00
parent fec7dc5c9e
commit 13d0ff4a5f
3 changed files with 165 additions and 0 deletions
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3
techlibs/coolrunner2/synth_coolrunner2.cc
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@ -143,6 +143,9 @@ struct SynthCoolrunner2Pass : public ScriptPass
if (check_label("fine"))
{
run("extract_counter -dir up -allow_arst no");
run("techmap -map +/coolrunner2/cells_counter_map.v");
run("clean");
run("opt -fast -full");
run("techmap -map +/techmap.v -map +/coolrunner2/cells_latch.v");
run("opt -fast");