From 838014ee5bda6c1b99ad8d74664aa5ea19fb501b Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Wed, 8 Aug 2007 19:12:31 +0000
Subject: [PATCH] Global values also don't undead-ify pointers in our dead
 alloca's set.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40936 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/DeadStoreElimination.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/Transforms/Scalar/DeadStoreElimination.cpp b/lib/Transforms/Scalar/DeadStoreElimination.cpp
index d740b655e57..283fcbc97a1 100644
--- a/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -364,6 +364,9 @@ bool DSE::RemoveUndeadPointers(Value* killPointer,
     if (deadPointers.count(A))
       deadPointers.erase(A);
     return false;
+  } else if (isa<GlobalValue>(killPointer)) {
+    // A global can't be in the dead pointer set
+    return false;
   }
   
   bool MadeChange = false;
-- 
2.34.1