From 7e366d2845da6d4974fededb0d034300b638fa66 Mon Sep 17 00:00:00 2001
From: Bob Wilson <bob.wilson@apple.com>
Date: Fri, 29 Mar 2013 23:28:55 +0000
Subject: [PATCH] Run the ObjCARCContract pass for LTO.
 <rdar://problem/13538084>

llvm-svn: 178385
---
 tools/lto/LTOCodeGenerator.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index cf7ffe28009..e7c83f94f53 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -44,6 +44,7 @@
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Transforms/IPO.h"
 #include "llvm/Transforms/IPO/PassManagerBuilder.h"
+#include "llvm/Transforms/ObjCARC.h"
 using namespace llvm;
 
 static cl::opt<bool>
@@ -397,6 +398,10 @@ bool LTOCodeGenerator::generateObjectFile(raw_ostream &out,
 
   formatted_raw_ostream Out(out);
 
+  // If the bitcode files contain ARC code and were compiled with optimization,
+  // the ObjCARCContractPass must be run, so do it unconditionally here.
+  codeGenPasses.add(createObjCARCContractPass());
+
   if (_target->addPassesToEmitFile(codeGenPasses, Out,
                                    TargetMachine::CGFT_ObjectFile)) {
     errMsg = "target file type not supported";