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Always set alignment of vectorized LD/ST in SLP-Vectorizer. <rdar://problem/16812145>

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207983 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Yi Jiang
2014-05-05 17:59:14 +00:00
parent b85d6905b5
commit 606660f1f3
2 changed files with 31 additions and 0 deletions
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4
lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -1622,6 +1622,8 @@ Value *BoUpSLP::vectorizeTree(TreeEntry *E) {
VecTy->getPointerTo(AS));
unsigned Alignment = LI->getAlignment();
LI = Builder.CreateLoad(VecPtr);
if (!Alignment)
Alignment = DL->getABITypeAlignment(LI->getPointerOperand()->getType());
LI->setAlignment(Alignment);
E->VectorizedValue = LI;
return propagateMetadata(LI, E->Scalars);
@ -1641,6 +1643,8 @@ Value *BoUpSLP::vectorizeTree(TreeEntry *E) {
Value *VecPtr = Builder.CreateBitCast(SI->getPointerOperand(),
VecTy->getPointerTo(AS));
StoreInst *S = Builder.CreateStore(VecValue, VecPtr);
if (!Alignment)
Alignment = DL->getABITypeAlignment(SI->getPointerOperand()->getType());
S->setAlignment(Alignment);
E->VectorizedValue = S;
return propagateMetadata(S, E->Scalars);