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| author | Clifford Wolf <clifford@clifford.at> | 2017-02-05 22:43:33 +0100 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2017-02-05 22:43:33 +0100 |
| commit | aab58045a867a6a7d2998d329a9f20924ab7b8a1 (patch) | |
| tree | 63eb2ea422d36e41d2d3c5d88a65e5208835c698 /kernel/satgen.h | |
| parent | 19303f63925eef95138c76cddc4e5ef0673b3a47 (diff) | |
| download | yosys-aab58045a867a6a7d2998d329a9f20924ab7b8a1.tar.gz yosys-aab58045a867a6a7d2998d329a9f20924ab7b8a1.tar.bz2 yosys-aab58045a867a6a7d2998d329a9f20924ab7b8a1.zip | |
Fix undef propagation bug in $pmux SAT model
Diffstat (limited to 'kernel/satgen.h')
| -rw-r--r-- | kernel/satgen.h | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/kernel/satgen.h b/kernel/satgen.h index 690f8e337..25a22fd8a 100644 --- a/kernel/satgen.h +++ b/kernel/satgen.h @@ -507,11 +507,7 @@ struct SatGen std::vector<int> undef_s = importUndefSigSpec(cell->getPort("\\S"), timestep); std::vector<int> undef_y = importUndefSigSpec(cell->getPort("\\Y"), timestep); - int maybe_one_hot = ez->CONST_FALSE; - int maybe_many_hot = ez->CONST_FALSE; - - int sure_one_hot = ez->CONST_FALSE; - int sure_many_hot = ez->CONST_FALSE; + int maybe_a = ez->CONST_TRUE; std::vector<int> bits_set = std::vector<int>(undef_y.size(), ez->CONST_FALSE); std::vector<int> bits_clr = std::vector<int>(undef_y.size(), ez->CONST_FALSE); @@ -524,18 +520,12 @@ struct SatGen int maybe_s = ez->OR(s.at(i), undef_s.at(i)); int sure_s = ez->AND(s.at(i), ez->NOT(undef_s.at(i))); - maybe_one_hot = ez->OR(maybe_one_hot, maybe_s); - maybe_many_hot = ez->OR(maybe_many_hot, ez->AND(maybe_one_hot, maybe_s)); - - sure_one_hot = ez->OR(sure_one_hot, sure_s); - sure_many_hot = ez->OR(sure_many_hot, ez->AND(sure_one_hot, sure_s)); + maybe_a = ez->AND(maybe_a, ez->NOT(sure_s)); - bits_set = ez->vec_ite(maybe_s, ez->vec_or(bits_set, ez->vec_or(bits_set, ez->vec_or(part_of_b, part_of_undef_b))), bits_set); - bits_clr = ez->vec_ite(maybe_s, ez->vec_or(bits_clr, ez->vec_or(bits_clr, ez->vec_or(ez->vec_not(part_of_b), part_of_undef_b))), bits_clr); + bits_set = ez->vec_ite(maybe_s, ez->vec_or(bits_set, ez->vec_or(part_of_b, part_of_undef_b)), bits_set); + bits_clr = ez->vec_ite(maybe_s, ez->vec_or(bits_clr, ez->vec_or(ez->vec_not(part_of_b), part_of_undef_b)), bits_clr); } - int maybe_a = ez->NOT(maybe_one_hot); - bits_set = ez->vec_ite(maybe_a, ez->vec_or(bits_set, ez->vec_or(bits_set, ez->vec_or(a, undef_a))), bits_set); bits_clr = ez->vec_ite(maybe_a, ez->vec_or(bits_clr, ez->vec_or(bits_clr, ez->vec_or(ez->vec_not(a), undef_a))), bits_clr); |