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[IRSim] Avoid repeated hash lookups (NFC) #108483

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Merged
merged 1 commit into from
Sep 13, 2024
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[IRSim] Avoid repeated hash lookups (NFC) #108483

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12 changes: 2 additions & 10 deletions llvm/lib/Analysis/IRSimilarityIdentifier.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1420,16 +1420,8 @@ void IRSimilarityIdentifier::findCandidates(
// IRSimilarityCandidates that include that instruction.
for (IRSimilarityCandidate &IRCand : SimilarityCandidates->back()) {
for (unsigned Idx = IRCand.getStartIdx(), Edx = IRCand.getEndIdx();
Idx <= Edx; ++Idx) {
DenseMap<unsigned, DenseSet<IRSimilarityCandidate *>>::iterator
IdIt;
IdIt = IndexToIncludedCand.find(Idx);
bool Inserted = false;
if (IdIt == IndexToIncludedCand.end())
std::tie(IdIt, Inserted) = IndexToIncludedCand.insert(
std::make_pair(Idx, DenseSet<IRSimilarityCandidate *>()));
IdIt->second.insert(&IRCand);
}
Idx <= Edx; ++Idx)
IndexToIncludedCand[Idx].insert(&IRCand);
// Add mapping of candidate to the overall similarity group number.
CandToGroup.insert(
std::make_pair(&IRCand, SimilarityCandidates->size() - 1));
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