[Alignment][NFC] Remove StoreInst::setAlignment(unsigned)

Summary:
This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet, bollu, jdoerfert

Subscribers: hiraditya, asbirlea, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D68268

llvm-svn: 373595

1 files changed, 6 insertions, 6 deletions

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
index eb01b4b7d7d..4c5e1cc4376 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
@@ -1356,15 +1356,15 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) {
     return eraseInstFromFunction(SI);
 
   // Attempt to improve the alignment.
-  unsigned KnownAlign = getOrEnforceKnownAlignment(
-      Ptr, DL.getPrefTypeAlignment(Val->getType()), DL, &SI, &AC, &DT);
-  unsigned StoreAlign = SI.getAlignment();
-  unsigned EffectiveStoreAlign =
-      StoreAlign != 0 ? StoreAlign : DL.getABITypeAlignment(Val->getType());
+  const Align KnownAlign = Align(getOrEnforceKnownAlignment(
+      Ptr, DL.getPrefTypeAlignment(Val->getType()), DL, &SI, &AC, &DT));
+  const MaybeAlign StoreAlign = MaybeAlign(SI.getAlignment());
+  const Align EffectiveStoreAlign =
+      StoreAlign ? *StoreAlign : Align(DL.getABITypeAlignment(Val->getType()));
 
   if (KnownAlign > EffectiveStoreAlign)
     SI.setAlignment(KnownAlign);
-  else if (StoreAlign == 0)
+  else if (!StoreAlign)
     SI.setAlignment(EffectiveStoreAlign);
 
   // Try to canonicalize the stored type.