From d7266d484a861c3fcc6763df27fc81a8e3c46fc5 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 8 May 2008 15:08:39 +0000
Subject: [PATCH] Check linkage.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50851 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/IPO/StructRetPromotion.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Transforms/IPO/StructRetPromotion.cpp b/lib/Transforms/IPO/StructRetPromotion.cpp
index 80952b7c70c..77a35b42875 100644
--- a/lib/Transforms/IPO/StructRetPromotion.cpp
+++ b/lib/Transforms/IPO/StructRetPromotion.cpp
@@ -73,7 +73,7 @@ bool SRETPromotion::runOnSCC(const std::vector<CallGraphNode *> &SCC) {
 bool SRETPromotion::PromoteReturn(CallGraphNode *CGN) {
   Function *F = CGN->getFunction();
 
-  if (!F || F->isDeclaration())
+  if (!F || F->isDeclaration() || !F->hasInternalLinkage())
     return false;
 
   // Make sure that function returns struct.