From 83546f2fe0514f5fe84349cf1d7ece623875bc7a Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Tue, 4 Jan 2011 19:10:54 +0000
Subject: When removing a value from GVN's leaders list, don't drop the Next
 pointer in a corner case.

llvm-svn: 122822
---
 llvm/lib/Transforms/Scalar/GVN.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'llvm/lib/Transforms/Scalar/GVN.cpp')

diff --git a/llvm/lib/Transforms/Scalar/GVN.cpp b/llvm/lib/Transforms/Scalar/GVN.cpp
index cf82ebc027f..c78c4c308cb 100644
--- a/llvm/lib/Transforms/Scalar/GVN.cpp
+++ b/llvm/lib/Transforms/Scalar/GVN.cpp
@@ -466,6 +466,7 @@ namespace {
           NumberTableEntry* Next = Curr->Next;
           Curr->Val = Next->Val;
           Curr->BB = Next->BB;
+          Curr->Next = Next->Next;
         }
       }
     }
@@ -1693,7 +1694,7 @@ bool GVN::processInstruction(Instruction *I,
     
     return false;
   }
-
+  
   uint32_t NextNum = VN.getNextUnusedValueNumber();
   unsigned Num = VN.lookup_or_add(I);
 
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