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| author | Jannis Harder <me@jix.one> | 2022-04-01 21:03:20 +0200 |
|---|---|---|
| committer | Jannis Harder <me@jix.one> | 2022-04-01 21:03:20 +0200 |
| commit | ca5b910296c05c95f3bc7f2d1d2b7db19d6328e2 (patch) | |
| tree | 9cf51a65ac4706c2ece7d86a290aea4946b8bbde /passes/opt/opt.cc | |
| parent | 2ec4af56e6ec83fe320cd7af958020ea56e1d9ab (diff) | |
| download | yosys-ca5b910296c05c95f3bc7f2d1d2b7db19d6328e2.tar.gz yosys-ca5b910296c05c95f3bc7f2d1d2b7db19d6328e2.tar.bz2 yosys-ca5b910296c05c95f3bc7f2d1d2b7db19d6328e2.zip | |
opt_merge: Add `-keepdc` option required for formal verification
The `-keepdc` option prevents merging flipflops with dont-care bits in
their initial value, as, in general, this is not a valid transform for
formal verification.
The keepdc option of `opt` is passed along to `opt_merge` now.
Diffstat (limited to 'passes/opt/opt.cc')
| -rw-r--r-- | passes/opt/opt.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/passes/opt/opt.cc b/passes/opt/opt.cc index c3e418c07..dc88563c2 100644 --- a/passes/opt/opt.cc +++ b/passes/opt/opt.cc @@ -114,6 +114,7 @@ struct OptPass : public Pass { if (args[argidx] == "-keepdc") { opt_expr_args += " -keepdc"; opt_dff_args += " -keepdc"; + opt_merge_args += " -keepdc"; continue; } if (args[argidx] == "-nodffe") { |