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dfflibmap: fix formal $dffsr tests with sat, prove "no s&r" assumption only needed when appropriate

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This commit is contained in:
Emil J. Tywoniak 2026-03-03 01:19:22 +01:00
parent 22916aaab1
commit 5b4603c54f
4 changed files with 121 additions and 38 deletions
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37
tests/techmap/dfflibmap_proc_formal.ys
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@ -52,48 +52,49 @@ dfflibmap -liberty dfflibmap_dffsr_s.lib top
clk2fflogic
flatten
opt_clean -purge
equiv_make top top_unmapped equiv
equiv_induct equiv
equiv_status -assert equiv
miter -equiv -make_assert -flatten top_unmapped top miter
# Prove that this is equivalent
sat -verify -prove-asserts -set-init-undef -show-public -seq 3 miter
##################################################################
delete top equiv
delete top miter
copy top_unmapped top
dfflibmap -liberty dfflibmap_dffsr_r.lib top
clk2fflogic
flatten
opt_clean -purge
equiv_make top top_unmapped equiv
equiv_induct equiv
equiv_status -assert equiv
miter -equiv -make_assert -flatten top_unmapped top miter
# Prove that this is equivalent
sat -verify -prove-asserts -set-init-undef -show-public -seq 3 miter
##################################################################
delete top equiv
delete top miter
copy top_unmapped top
dfflibmap -liberty dfflibmap_dffsr_mixedpol.lib top
async2sync
flatten
opt_clean -purge
equiv_make top top_unmapped equiv
equiv_induct equiv
equiv_status -assert equiv
miter -equiv -make_assert -flatten top_unmapped top miter
# Prove that this is equivalent
sat -verify -prove-asserts -set-init-undef -show-public -seq 3 miter
##################################################################
delete top equiv
delete top miter
copy top_unmapped top
dfflibmap -liberty dfflibmap_dffsr_not_next.lib top
async2sync
flatten
opt_clean -purge
equiv_make top top_unmapped equiv
equiv_induct equiv
equiv_status -assert equiv
miter -equiv -make_assert -flatten top_unmapped top miter
# Prove that this is equivalent
sat -verify -prove-asserts -set-init-undef -show-public -seq 3 miter