When rewriting the pointer operand to a load or store which has

[oota-llvm.git] / lib / Transforms / Scalar / SROA.cpp

diff --git a/lib/Transforms/Scalar/SROA.cpp b/lib/Transforms/Scalar/SROA.cpp
index f1cb947011cddb6be6016c1628a493ff2861af93..67246a5a1cc7ddb06d1e6c1c6337c85159db9e15 100644 (file)
--- a/lib/Transforms/Scalar/SROA.cpp
+++ b/lib/Transforms/Scalar/SROA.cpp
@@ -1992,6 +1992,9 @@ private:
     Value *NewPtr = getAdjustedAllocaPtr(IRB,
                                          LI.getPointerOperand()->getType());
     LI.setOperand(0, NewPtr);
+    if (LI.getAlignment())
+      LI.setAlignment(MinAlign(NewAI.getAlignment(),
+                               BeginOffset - NewAllocaBeginOffset));
     DEBUG(dbgs() << "          to: " << LI << "\n");
 
     deleteIfTriviallyDead(OldOp);
@@ -2043,6 +2046,9 @@ private:
     Value *NewPtr = getAdjustedAllocaPtr(IRB,
                                          SI.getPointerOperand()->getType());
     SI.setOperand(1, NewPtr);
+    if (SI.getAlignment())
+      SI.setAlignment(MinAlign(NewAI.getAlignment(),
+                               BeginOffset - NewAllocaBeginOffset));
     DEBUG(dbgs() << "          to: " << SI << "\n");
 
     deleteIfTriviallyDead(OldOp);