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-rw-r--r--llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp25
1 files changed, 4 insertions, 21 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
index fbbdfaa04dd..01fc1528681 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
@@ -1339,10 +1339,10 @@ static bool equivalentAddressValues(Value *A, Value *B) {
/// Converts store (bitcast (load (bitcast (select ...)))) to
/// store (load (select ...)), where select is minmax:
/// select ((cmp load V1, load V2), V1, V2).
-static bool removeBitcastsFromLoadStoreOnMinMax(InstCombiner &IC,
- StoreInst &SI) {
+bool removeBitcastsFromLoadStoreOnMinMax(InstCombiner &IC, StoreInst &SI) {
// bitcast?
- if (!match(SI.getPointerOperand(), m_BitCast(m_Value())))
+ Value *StoreAddr;
+ if (!match(SI.getPointerOperand(), m_BitCast(m_Value(StoreAddr))))
return false;
// load? integer?
Value *LoadAddr;
@@ -1354,26 +1354,9 @@ static bool removeBitcastsFromLoadStoreOnMinMax(InstCombiner &IC,
if (!isMinMaxWithLoads(LoadAddr))
return false;
- if (!all_of(LI->users(), [LI, LoadAddr](User *U) {
- auto *SI = dyn_cast<StoreInst>(U);
- return SI && SI->getPointerOperand() != LI &&
- peekThroughBitcast(SI->getPointerOperand()) != LoadAddr &&
- !SI->getPointerOperand()->isSwiftError();
- }))
- return false;
-
- IC.Builder.SetInsertPoint(LI);
LoadInst *NewLI = combineLoadToNewType(
IC, *LI, LoadAddr->getType()->getPointerElementType());
- // Replace all the stores with stores of the newly loaded value.
- for (auto *UI : LI->users()) {
- auto *USI = cast<StoreInst>(UI);
- IC.Builder.SetInsertPoint(USI);
- combineStoreToNewValue(IC, *USI, NewLI);
- if (USI != &SI)
- IC.eraseInstFromFunction(*cast<Instruction>(UI));
- }
- IC.Worklist.Remove(LI);
+ combineStoreToNewValue(IC, SI, NewLI);
return true;
}
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