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Simplified $fa undef model

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This commit is contained in:
Clifford Wolf 2014-09-08 16:59:39 +02:00
parent 6dc07eb1f2
commit fcb46138ce
3 changed files with 6 additions and 15 deletions
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15
kernel/satgen.h
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@ -991,20 +991,7 @@ struct SatGen
std::vector<int> undef_x = importUndefSigSpec(cell->getPort("\\X"), timestep);
ez->assume(ez->vec_eq(undef_y, ez->vec_or(ez->vec_or(undef_a, undef_b), undef_c)));
std::vector<int> undef_t1 = ez->vec_or(undef_a, undef_b);
std::vector<int> a0 = ez->vec_and(ez->vec_not(a), ez->vec_not(undef_a));
std::vector<int> b0 = ez->vec_and(ez->vec_not(b), ez->vec_not(undef_b));
std::vector<int> undef_t2 = ez->vec_and(ez->vec_or(undef_a, undef_b), ez->vec_not(ez->vec_or(a0, b0)));
std::vector<int> c0 = ez->vec_and(ez->vec_not(c), ez->vec_not(undef_c));
std::vector<int> t10 = ez->vec_and(ez->vec_not(t1), ez->vec_not(undef_t1));
std::vector<int> undef_t3 = ez->vec_and(ez->vec_or(undef_c, undef_t1), ez->vec_not(ez->vec_or(c0, t10)));
std::vector<int> t21 = ez->vec_and(t2, ez->vec_not(undef_t2));
std::vector<int> t31 = ez->vec_and(t3, ez->vec_not(undef_t3));
ez->assume(ez->vec_eq(undef_x, ez->vec_and(ez->vec_or(undef_t2, undef_t3), ez->vec_not(ez->vec_or(t21, t31)))));
ez->assume(ez->vec_eq(undef_x, undef_y));
undefGating(y, yy, undef_y);
undefGating(x, xx, undef_x);