From 79cfddf646c3d235df095f2ffdfd4d9603475192 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 13 May 2007 21:28:07 +0000
Subject: [PATCH] Fix Transforms/GlobalOpt/2007-05-13-Crash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37020 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/IPO/GlobalOpt.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp
index f5d2baa426a..56f6390ea4b 100644
--- a/lib/Transforms/IPO/GlobalOpt.cpp
+++ b/lib/Transforms/IPO/GlobalOpt.cpp
@@ -623,7 +623,10 @@ static bool OptimizeAwayTrappingUsesOfLoads(GlobalVariable *GV, Constant *LV) {
       Loads.push_back(LI);
       Changed |= OptimizeAwayTrappingUsesOfValue(LI, LV);
     } else {
-      assert(isa<StoreInst>(*GUI) && "Only expect load and stores!");
+      // If we get here we could have stores, loads, or phi nodes whose values
+      // are loaded.
+      assert((isa<StoreInst>(*GUI) || isa<PHINode>(*GUI)) &&
+             "Only expect load and stores!");
     }
 
   if (Changed) {