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Emprically (even if I don't fully understand it) this passes picorv32 tb

This commit is contained in:
Eddie Hung 2019-06-26 17:33:26 -07:00
parent d7d5ea6e0c
commit dd4667ef2b
1 changed files with 11 additions and 12 deletions
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15
passes/techmap/muxcover.cc
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@ -459,25 +459,24 @@ struct MuxcoverWorker
mux.cost += prepare_decode_mux(U1, U2, V1, bit); mux.cost += prepare_decode_mux(U1, U2, V1, bit);
if (U1 != State::Sx && U2 != State::Sx) {
mux.cost += prepare_decode_mux(T1, T2, U1, bit); mux.cost += prepare_decode_mux(T1, T2, U1, bit);
mux.cost += prepare_decode_mux(T3, T4, U2, bit); mux.cost += prepare_decode_mux(T3, T4, U2, bit);
if (U1 != U2 && U1 != State::Sx && U2 != State::Sx) {
mux.cost += prepare_decode_mux(T1, T3, V1, bit); mux.cost += prepare_decode_mux(T1, T3, V1, bit);
}
if (T1 != T2 && T1 != State::Sx && T2 != State::Sx) {
mux.cost += prepare_decode_mux(S1, S2, T1, bit); mux.cost += prepare_decode_mux(S1, S2, T1, bit);
mux.cost += prepare_decode_mux(S3, S4, T2, bit); mux.cost += prepare_decode_mux(S3, S4, T2, bit);
if (T1 != T2 && T1 != State::Sx && T2 != State::Sx)
mux.cost += prepare_decode_mux(S1, S3, U1, bit); mux.cost += prepare_decode_mux(S1, S3, U1, bit);
}
if (T3 != T4 && T3 != State::Sx && T4 != State::Sx) {
mux.cost += prepare_decode_mux(S5, S6, T3, bit); mux.cost += prepare_decode_mux(S5, S6, T3, bit);
mux.cost += prepare_decode_mux(S7, S8, T4, bit); mux.cost += prepare_decode_mux(S7, S8, T4, bit);
if (T3 != T4 && T3 != State::Sx && T4 != State::Sx)
mux.cost += prepare_decode_mux(S5, S7, U2, bit); mux.cost += prepare_decode_mux(S5, S7, U2, bit);
}
if (T1 != T2 && T1 != State::Sx && T2 != State::Sx && if (T1 != T3 && T1 != State::Sx && T3 != State::Sx)
T3 != T4 && T3 != State::Sx && T4 != State::Sx)
mux.cost += prepare_decode_mux(S1, S5, V1, bit); mux.cost += prepare_decode_mux(S1, S5, V1, bit);
}
mux.selects.push_back(S1); mux.selects.push_back(S1);
mux.selects.push_back(T1); mux.selects.push_back(T1);