From 4da1606aac3a4aa8cfde4a22d7b993c9954f0365 Mon Sep 17 00:00:00 2001
From: Manman Ren <mren@apple.com>
Date: Wed, 13 Mar 2013 18:33:41 +0000
Subject: [PATCH] No functionality change. Use unreachable in getCompileUnit.

llvm-svn: 176962
---
 lib/CodeGen/AsmPrinter/DIE.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/CodeGen/AsmPrinter/DIE.cpp b/lib/CodeGen/AsmPrinter/DIE.cpp
index 68d6b6aef7b..bbb04325819 100644
--- a/lib/CodeGen/AsmPrinter/DIE.cpp
+++ b/lib/CodeGen/AsmPrinter/DIE.cpp
@@ -120,7 +120,7 @@ DIE *DIE::getCompileUnit() const{
       return p;
     p = p->getParent();
   }
-  return NULL;
+  llvm_unreachable("We should not have orphaned DIEs.");
 }
 
 #ifndef NDEBUG