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opt_muxtree: set iterations limit based on number of muxes

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Carlo Alberto Ferraris 2022-11-03 21:18:21 +09:00 • committed by GitHub
parent d8ea5ef6e2
commit 551d36d384
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1 changed files with 5 additions and 1 deletions
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passes/opt/opt_muxtree.cc
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@ -36,7 +36,7 @@ struct OptMuxtreeWorker
RTLIL::Module *module; RTLIL::Module *module;
SigMap assign_map; SigMap assign_map;
int removed_count; int removed_count;
int glob_abort_cnt = 100000; int glob_abort_cnt;
struct bitinfo_t { struct bitinfo_t {
bool seen_non_mux; bool seen_non_mux;
@ -147,6 +147,10 @@ struct OptMuxtreeWorker
return; return;
} }
// Limit the number of iterations based on the number of muxes.
// The multiplier (100) is arbitrary.
glob_abort_cnt = GetSize(mux2info) * 100;
// Populate mux2info[].ports[]: // Populate mux2info[].ports[]:
// .input_muxes // .input_muxes
for (int i = 0; i < GetSize(bit2info); i++) for (int i = 0; i < GetSize(bit2info); i++)