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[Analysis] Avoid repeated hash lookups (NFC) #140691

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May 20, 2025
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[Analysis] Avoid repeated hash lookups (NFC) #140691

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11 changes: 5 additions & 6 deletions llvm/lib/Analysis/IRSimilarityIdentifier.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1306,12 +1306,11 @@ static void findCandidateStructures(
CandIt != CandEndIt; CandIt++) {

// Determine if it has an assigned structural group already.
CandToGroupIt = CandToGroup.find(&*CandIt);
if (CandToGroupIt == CandToGroup.end()) {
// If not, we assign it one, and add it to our mapping.
std::tie(CandToGroupIt, Inserted) =
CandToGroup.insert(std::make_pair(&*CandIt, CurrentGroupNum++));
}
// If not, we assign it one, and add it to our mapping.
std::tie(CandToGroupIt, Inserted) =
CandToGroup.try_emplace(&*CandIt, CurrentGroupNum);
if (Inserted)
++CurrentGroupNum;

// Get the structural group number from the iterator.
OuterGroupNum = CandToGroupIt->second;
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