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[BPI] Use BasicBlock::isEHPad() to check exception handling block. #95771

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Merged
merged 3 commits into from
Jun 24, 2024
Merged

[BPI] Use BasicBlock::isEHPad() to check exception handling block. #95771

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[BPI] Use BasicBlock::isEHPad() to check exception handling block.
Enna1 Jun 14, 2024
7a75779
Merge branch 'main' into users/Enna1/BPI-use-isEHPad
Enna1 Jun 17, 2024
e8f1a57
Merge branch 'main' into users/Enna1/BPI-use-isEHPad
Enna1 Jun 19, 2024
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9 changes: 3 additions & 6 deletions llvm/lib/Analysis/BranchProbabilityInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -787,12 +787,9 @@ BranchProbabilityInfo::getInitialEstimatedBlockWeight(const BasicBlock *BB) {
? static_cast<uint32_t>(BlockExecWeight::NORETURN)
: static_cast<uint32_t>(BlockExecWeight::UNREACHABLE);

// Check if the block is 'unwind' handler of some invoke instruction.
for (const auto *Pred : predecessors(BB))
if (Pred)
if (const auto *II = dyn_cast<InvokeInst>(Pred->getTerminator()))
if (II->getUnwindDest() == BB)
return static_cast<uint32_t>(BlockExecWeight::UNWIND);
// Check if the block is an exception handling block.
if (BB->isEHPad())
return static_cast<uint32_t>(BlockExecWeight::UNWIND);

// Check if the block contains 'cold' call.
for (const auto &I : *BB)
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