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[CodeGenPrepare] Simplify code. NFCI.

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This commit is contained in:
Benjamin Kramer 2020-09-11 11:24:08 +02:00
parent 336548370d
commit 28b9fdaf5e
1 changed files with 5 additions and 16 deletions
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21
lib/CodeGen/CodeGenPrepare.cpp
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@ -5274,22 +5274,11 @@ bool CodeGenPrepare::optimizeMemoryInst(Instruction *MemoryInst, Value *Addr,
// If we have no uses, recursively delete the value and all dead instructions
// using it.
if (Repl->use_empty()) {
// This can cause recursive deletion, which can invalidate our iterator.
// Use a WeakTrackingVH to hold onto it in case this happens.
Value *CurValue = &*CurInstIterator;
WeakTrackingVH IterHandle(CurValue);
BasicBlock *BB = CurInstIterator->getParent();
RecursivelyDeleteTriviallyDeadInstructions(
Repl, TLInfo, nullptr,
[&](Value *V) { removeAllAssertingVHReferences(V); });
if (IterHandle != CurValue) {
// If the iterator instruction was recursively deleted, start over at the
// start of the block.
CurInstIterator = BB->begin();
SunkAddrs.clear();
}
resetIteratorIfInvalidatedWhileCalling(CurInstIterator->getParent(), [&]() {
RecursivelyDeleteTriviallyDeadInstructions(
Repl, TLInfo, nullptr,
[&](Value *V) { removeAllAssertingVHReferences(V); });
});
}
++NumMemoryInsts;
return true;