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[CodeGen] Avoid repeated hash lookups (NFC) #123894

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Merged
merged 1 commit into from
Jan 22, 2025
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[CodeGen] Avoid repeated hash lookups (NFC) #123894

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6 changes: 3 additions & 3 deletions llvm/lib/CodeGen/MachineBlockPlacement.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3178,11 +3178,11 @@ bool MachineBlockPlacement::maybeTailDuplicateBlock(
// Conservative default.
bool InWorkList = true;
// Remove from the Chain and Chain Map
if (BlockToChain.count(RemBB)) {
BlockChain *Chain = BlockToChain[RemBB];
if (auto It = BlockToChain.find(RemBB); It != BlockToChain.end()) {
BlockChain *Chain = It->second;
InWorkList = Chain->UnscheduledPredecessors == 0;
Chain->remove(RemBB);
BlockToChain.erase(RemBB);
BlockToChain.erase(It);
}

// Handle the unplaced block iterator
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