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| author | Enna1 <xumingjie.enna1@bytedance.com> | 2024-06-24 09:45:04 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-24 09:45:04 +0800 |
| commit | 8f49dab19e861baeb0d87452e652ed97d3883d1a (patch) | |
| tree | 078afe04e7883768f9e9f6092354038bca8bd382 /llvm/lib/Analysis/BranchProbabilityInfo.cpp | |
| parent | 905c58f5aa33f1cd6370913bcadcd2e7dd8abbd0 (diff) | |
| download | llvm-8f49dab19e861baeb0d87452e652ed97d3883d1a.zip llvm-8f49dab19e861baeb0d87452e652ed97d3883d1a.tar.gz llvm-8f49dab19e861baeb0d87452e652ed97d3883d1a.tar.bz2 | |
[BPI] Use BasicBlock::isEHPad() to check exception handling block. (#95771)
There is no need to iterate all predecessors of current block, check if
current block is the invoke unwind destination of any predecessor. We
can directly call `BasicBlock::isEHPad()` to check if current block is
an exception handling block.
Diffstat (limited to 'llvm/lib/Analysis/BranchProbabilityInfo.cpp')
| -rw-r--r-- | llvm/lib/Analysis/BranchProbabilityInfo.cpp | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/llvm/lib/Analysis/BranchProbabilityInfo.cpp b/llvm/lib/Analysis/BranchProbabilityInfo.cpp index 50dcd5f..3e9c609 100644 --- a/llvm/lib/Analysis/BranchProbabilityInfo.cpp +++ b/llvm/lib/Analysis/BranchProbabilityInfo.cpp @@ -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) |