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-rw-r--r--passes/opt/opt_muxtree.cc33
1 files changed, 16 insertions, 17 deletions
diff --git a/passes/opt/opt_muxtree.cc b/passes/opt/opt_muxtree.cc
index 8ef54cdda..100b1b495 100644
--- a/passes/opt/opt_muxtree.cc
+++ b/passes/opt/opt_muxtree.cc
@@ -372,29 +372,28 @@ struct OptMuxtreeWorker
int port_idx = 0, port_off = 0;
vector<int> bits = sig2bits(sig, false);
for (int i = 0; i < GetSize(bits); i++) {
- if (bits[i] < 0)
- continue;
- if (knowledge.known_inactive.at(bits[i])) {
- sig[i] = State::S0;
- did_something = true;
- } else
- if (knowledge.known_active.at(bits[i])) {
- sig[i] = State::S1;
- did_something = true;
- }
- if (width) {
- if (ctrl_bits.count(bits[i])) {
- sig[i] = ctrl_bits.at(bits[i]) == port_idx ? State::S1 : State::S0;
+ if (bits[i] >= 0) {
+ if (knowledge.known_inactive.at(bits[i])) {
+ sig[i] = State::S0;
+ did_something = true;
+ } else
+ if (knowledge.known_active.at(bits[i])) {
+ sig[i] = State::S1;
did_something = true;
}
- if (++port_off == width)
- port_idx++, port_off=0;
- } else {
if (ctrl_bits.count(bits[i])) {
- sig[i] = State::S0;
+ if (width) {
+ sig[i] = ctrl_bits.at(bits[i]) == port_idx ? State::S1 : State::S0;
+ } else {
+ sig[i] = State::S0;
+ }
did_something = true;
}
}
+ if (width) {
+ if (++port_off == width)
+ port_idx++, port_off=0;
+ }
}
if (did_something) {