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-rw-r--r--llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp b/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
index 427028066026..b35ab57e0d87 100644
--- a/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
+++ b/llvm/lib/Transforms/Utils/PromoteMemoryToRegister.cpp
@@ -70,7 +70,8 @@ bool llvm::isAllocaPromotable(const AllocaInst *AI) {
if (LI->isVolatile())
return false;
} else if (const StoreInst *SI = dyn_cast<StoreInst>(U)) {
- if (SI->getOperand(0) == AI)
+ if (SI->getValueOperand() == AI ||
+ SI->getValueOperand()->getType() != AI->getAllocatedType())
return false; // Don't allow a store OF the AI, only INTO the AI.
// Note that atomic stores can be transformed; atomic semantics do
// not have any meaning for a local alloca.