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authorJannis Harder <me@jix.one>2022-07-21 14:22:15 +0200
committerJannis Harder <me@jix.one>2022-08-16 13:37:30 +0200
commitc0063288d699f4f3edf5e0ff6ee1bd5cfa9ac884 (patch)
tree56dede2b6f394bdd4cf662ae8f8a9c1f67e8f54f /kernel/satgen.cc
parentc26b2bf543a226e65a3fb07040bb278d668accf2 (diff)
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Add the $anyinit cell and the formalff pass
These can be used to protect undefined flip-flop initialization values from optimizations that are not sound for formal verification and can help mapping all solver-provided values in witness traces for flows that use different backends simultaneously.
Diffstat (limited to 'kernel/satgen.cc')
-rw-r--r--kernel/satgen.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/satgen.cc b/kernel/satgen.cc
index 9c40ec66d..05eeca76e 100644
--- a/kernel/satgen.cc
+++ b/kernel/satgen.cc
@@ -1176,7 +1176,7 @@ bool SatGen::importCell(RTLIL::Cell *cell, int timestep)
return true;
}
- if (timestep > 0 && RTLIL::builtin_ff_cell_types().count(cell->type))
+ if (timestep > 0 && (RTLIL::builtin_ff_cell_types().count(cell->type) || cell->type == ID($anyinit)))
{
FfData ff(nullptr, cell);