[Alignment][NFC] Convert AllocaInst to MaybeAlign

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

Reviewed By: courbet

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69301

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/SjLjEHPrepare.cpp b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
index db520d4e640..3f94a6af229 100644
--- a/llvm/lib/CodeGen/SjLjEHPrepare.cpp
+++ b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
@@ -175,9 +175,9 @@ Value *SjLjEHPrepare::setupFunctionContext(Function &F,
   // that needs to be restored on all exits from the function. This is an alloca
   // because the value needs to be added to the global context list.
   auto &DL = F.getParent()->getDataLayout();
-  unsigned Align = DL.getPrefTypeAlignment(FunctionContextTy);
-  FuncCtx = new AllocaInst(FunctionContextTy, DL.getAllocaAddrSpace(),
-                           nullptr, Align, "fn_context", &EntryBB->front());
+  const Align Alignment(DL.getPrefTypeAlignment(FunctionContextTy));
+  FuncCtx = new AllocaInst(FunctionContextTy, DL.getAllocaAddrSpace(), nullptr,
+                           Alignment, "fn_context", &EntryBB->front());
 
   // Fill in the function context structure.
   for (LandingPadInst *LPI : LPads) {