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Relax volatile stores (always return)

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This commit partially reverts 2211738092
That commit caused performance regression in RPCS3
This commit is contained in:
Nekotekina 2021-12-27 01:19:26 +03:00
parent a670c459ea
commit 1c0ca194dc
1 changed files with 0 additions and 4 deletions
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4
lib/IR/Instruction.cpp
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@ -690,10 +690,6 @@ bool Instruction::isSafeToRemove() const {
} }
bool Instruction::willReturn() const { bool Instruction::willReturn() const {
// Volatile store isn't guaranteed to return; see LangRef.
if (auto *SI = dyn_cast<StoreInst>(this))
return !SI->isVolatile();
if (const auto *CB = dyn_cast<CallBase>(this)) if (const auto *CB = dyn_cast<CallBase>(this))
// FIXME: Temporarily assume that all side-effect free intrinsics will // FIXME: Temporarily assume that all side-effect free intrinsics will
// return. Remove this workaround once all intrinsics are appropriately // return. Remove this workaround once all intrinsics are appropriately