From 9da52dce892ff57f40aab29acf909f9b2fba7906 Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Thu, 19 Jun 2008 17:53:26 +0000
Subject: [PATCH] Be sure to remove values from the value numbering table after
 we delete them. This fixes a failure on povray.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52499 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/GVN.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index c9eb2474328..f8522694286 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1234,6 +1234,7 @@ bool GVN::performPRE(Function& F) {
               UUI->second = Phi;
       
       BI->replaceAllUsesWith(Phi);
+      VN.erase(BI);
       
       Instruction* erase = BI;
       BI++;