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synth_gowin: ABC9 support

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This adds ABC9 support for synth_gowin; drastically improving
synthesis quality.
This commit is contained in:
Dan Ravensloft 2020-04-01 01:07:30 +01:00 • committed by Marcelina Kościelnicka
parent 0d4c2f0a65
commit 7f45cab27a
3 changed files with 345 additions and 35 deletions
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6
tests/arch/gowin/init.ys
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@ -30,7 +30,6 @@ select -assert-count 1 t:DFFRE
select -assert-count 1 t:DFFS
select -assert-count 1 t:DFFSE
delete
design -load read
# these should synth to a flop with reset
@ -68,6 +67,11 @@ select -assert-count 2 t:DFFS
select -assert-count 2 t:DFFSE
select -assert-count 12 t:LUT2
# Remove all whiteboxes so we don't inadvertently
# count init attributes inside them
# Should be superseded by https://github.com/YosysHQ/yosys/pull/1949
delete A:whitebox=1
# check the expected leftover init values
# this would happen if your reset value is not the initial value
# which would be weird