From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 15 Jan 2008 03:14:05 +0000 (+0000)
Subject: ByVal stack slot alignment should be at least as large as pointer ABI alignment.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c67e6e8e8203be62da647832842edd7d90c4c585;p=oota-llvm.git

ByVal stack slot alignment should be at least as large as pointer ABI alignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45995 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
index b8bc484e3bc..522ad7399e2 100644
--- a/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
+++ b/lib/CodeGen/SelectionDAG/CallingConvLower.cpp
@@ -15,6 +15,7 @@
 #include "llvm/CodeGen/CallingConvLower.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"
 #include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
 using namespace llvm;
 
@@ -31,11 +32,12 @@ CCState::CCState(unsigned CC, bool isVarArg, const TargetMachine &tm,
 void CCState::HandleStruct(unsigned ValNo, MVT::ValueType ValVT,
                            MVT::ValueType LocVT, CCValAssign::LocInfo LocInfo,
                            unsigned ArgFlags) {
+  unsigned MinAlign = TM.getTargetData()->getPointerABIAlignment();
   unsigned Align  = 1 << ((ArgFlags & ISD::ParamFlags::ByValAlign) >>
                           ISD::ParamFlags::ByValAlignOffs);
   unsigned Size   = (ArgFlags & ISD::ParamFlags::ByValSize) >>
       ISD::ParamFlags::ByValSizeOffs;
-  unsigned Offset = AllocateStack(Size, Align);
+  unsigned Offset = AllocateStack(Size, std::max(MinAlign, Align));
 
   addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
 }