Fix alignment on alloca's for parameters using ABIArgInfo::Expand.
llvm-svn: 143658
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 6e3b70c..92ac5ae 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -1058,10 +1058,11 @@
// If this structure was expanded into multiple arguments then
// we need to create a temporary and reconstruct it from the
// arguments.
- llvm::Value *Temp = CreateMemTemp(Ty, Arg->getName() + ".addr");
- llvm::Function::arg_iterator End =
- ExpandTypeFromArgs(Ty, MakeAddrLValue(Temp, Ty), AI);
- EmitParmDecl(*Arg, Temp, ArgNo);
+ llvm::AllocaInst *Alloca = CreateMemTemp(Ty);
+ Alloca->setAlignment(getContext().getDeclAlign(Arg).getQuantity());
+ LValue LV = MakeAddrLValue(Alloca, Ty, Alloca->getAlignment());
+ llvm::Function::arg_iterator End = ExpandTypeFromArgs(Ty, LV, AI);
+ EmitParmDecl(*Arg, Alloca, ArgNo);
// Name the arguments used in expansion and increment AI.
unsigned Index = 0;