Calculate alignment for local variables.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51826 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDecl.cpp b/lib/CodeGen/CGDecl.cpp
index 4541fc4..8723a66 100644
--- a/lib/CodeGen/CGDecl.cpp
+++ b/lib/CodeGen/CGDecl.cpp
@@ -129,8 +129,12 @@
if (!Target.useGlobalsForAutomaticVariables()) {
// A normal fixed sized variable becomes an alloca in the entry block.
const llvm::Type *LTy = ConvertType(Ty);
- // TODO: Alignment
- DeclPtr = CreateTempAlloca(LTy, D.getName());
+ llvm::AllocaInst * Alloc = CreateTempAlloca(LTy, D.getName());
+ unsigned align = getContext().getTypeAlign(Ty);
+ if (const AlignedAttr* AA = D.getAttr<AlignedAttr>())
+ align = std::max(align, AA->getAlignment());
+ Alloc->setAlignment(align >> 3);
+ DeclPtr = Alloc;
} else {
// Targets that don't support recursion emit locals as globals.
const char *Class =