From 836a93bdb3bbf6b2b63a72c04ae307b7ed4e578a Mon Sep 17 00:00:00 2001
From: Manman Ren <mren@apple.com>
Date: Wed, 28 Nov 2012 22:29:41 +0000
Subject: [PATCH] ABI: comments from Eli on r168820.

rdar://12723368

llvm-svn: 168821
---
 clang/lib/CodeGen/CGCall.cpp          | 2 ++
 clang/test/CodeGen/x86_64-arguments.c | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index ab933c52b42d..54ccb86a030d 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -695,6 +695,7 @@ static llvm::Value *CreateCoercedLoad(llvm::Value *SrcPtr,
   llvm::Type *I8PtrTy = CGF.Builder.getInt8PtrTy();
   llvm::Value *Casted = CGF.Builder.CreateBitCast(Tmp, I8PtrTy);
   llvm::Value *SrcCasted = CGF.Builder.CreateBitCast(SrcPtr, I8PtrTy);
+  // FIXME: Use better alignment.
   CGF.Builder.CreateMemCpy(Casted, SrcCasted,
       llvm::ConstantInt::get(CGF.IntPtrTy, SrcSize),
       1, false);
@@ -782,6 +783,7 @@ static void CreateCoercedStore(llvm::Value *Src,
     llvm::Type *I8PtrTy = CGF.Builder.getInt8PtrTy();
     llvm::Value *Casted = CGF.Builder.CreateBitCast(Tmp, I8PtrTy);
     llvm::Value *DstCasted = CGF.Builder.CreateBitCast(DstPtr, I8PtrTy);
+    // FIXME: Use better alignment.
     CGF.Builder.CreateMemCpy(DstCasted, Casted,
         llvm::ConstantInt::get(CGF.IntPtrTy, DstSize),
         1, false);
diff --git a/clang/test/CodeGen/x86_64-arguments.c b/clang/test/CodeGen/x86_64-arguments.c
index b39fa1d34910..d416045d8874 100644
--- a/clang/test/CodeGen/x86_64-arguments.c
+++ b/clang/test/CodeGen/x86_64-arguments.c
@@ -370,7 +370,7 @@ typedef union T1 { T2 field0; T4 field1; } T1;
 extern T1 T1_retval;
 T1 test48(void) {
 // CHECK: @test48
-// CHECK-NOT: load %struct.T4* %{{.*}}
-// CHECK-NOT: store %struct.T4 %{{.*}}, %struct.T4* %{{.*}}
+// CHECK: memcpy
+// CHECK: memcpy
   return T1_retval;
 }