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Merge pull request #5025 from povik/fix-macc_v2-satgen

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satgen: Fix $macc_v2 x-prop
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KrystalDelusion 2025-04-22 08:55:28 +12:00 • committed by GitHub
commit 1f32f980cd
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1 changed files with 7 additions and 1 deletions
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8
kernel/satgen.cc
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@ -788,12 +788,18 @@ bool SatGen::importCell(RTLIL::Cell *cell, int timestep)
{
std::vector<int> undef_a = importUndefSigSpec(cell->getPort(ID::A), timestep);
std::vector<int> undef_b = importUndefSigSpec(cell->getPort(ID::B), timestep);
std::vector<int> undef_c;
if (cell->type == ID($macc_v2))
undef_c = importUndefSigSpec(cell->getPort(ID::C), timestep);
int undef_any_a = ez->expression(ezSAT::OpOr, undef_a);
int undef_any_b = ez->expression(ezSAT::OpOr, undef_b);
int undef_any_c = ez->expression(ezSAT::OpOr, undef_c);
int undef_any = ez->OR(undef_any_a, ez->OR(undef_any_b, undef_any_c));
std::vector<int> undef_y = importUndefSigSpec(cell->getPort(ID::Y), timestep);
ez->assume(ez->vec_eq(undef_y, std::vector<int>(GetSize(y), ez->OR(undef_any_a, undef_any_b))));
ez->assume(ez->vec_eq(undef_y, std::vector<int>(GetSize(y), undef_any)));
undefGating(y, tmp, undef_y);
}