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[Analysis] Avoid repeated hash lookups (NFC) #123446

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merged 2 commits into from
Jan 18, 2025
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[Analysis] Avoid repeated hash lookups (NFC) #123446

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[Analysis] Avoid repeated hash lookups (NFC)
kazutakahirata Jan 17, 2025
b0fa3b2
Update llvm/lib/Analysis/InlineCost.cpp
kazutakahirata Jan 18, 2025
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6 changes: 4 additions & 2 deletions llvm/lib/Analysis/InlineCost.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2698,8 +2698,10 @@ void CallAnalyzer::findDeadBlocks(BasicBlock *CurrBB, BasicBlock *NextBB) {
auto IsEdgeDead = [&](BasicBlock *Pred, BasicBlock *Succ) {
// A CFG edge is dead if the predecessor is dead or the predecessor has a
// known successor which is not the one under exam.
return (DeadBlocks.count(Pred) ||
(KnownSuccessors[Pred] && KnownSuccessors[Pred] != Succ));
if (DeadBlocks.count(Pred))
return true;
BasicBlock *KnownSucc = KnownSuccessors[Pred];
return KnownSucc && KnownSucc != Succ;
};

auto IsNewlyDead = [&](BasicBlock *BB) {
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