[llvm] [ScalarizeMaskedMemIntrin] Use pointer alignment from pointer of masked.compressstore/expandload. (PR #83519)

[Craig Topper via llvm-commits]

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@@ -659,7 +660,7 @@ static void scalarizeMaskedExpandLoad(const DataLayout &DL, CallInst *CI,
       } else {
         Value *NewPtr =
             Builder.CreateConstInBoundsGEP1_32(EltTy, Ptr, MemIndex);
-        InsertElt = Builder.CreateAlignedLoad(EltTy, NewPtr, Align(1),
+        InsertElt = Builder.CreateAlignedLoad(EltTy, NewPtr, Alignment,
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topperc wrote:

We need to use `commonAlignment(Alignment, EltTy->getSizeInBits() / 8)`

https://github.com/llvm/llvm-project/pull/83519