From ae53c932b9f3b6046781aeceadc7559bc477f5d4 Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Tue, 23 Dec 2008 00:49:51 +0000
Subject: [PATCH] Don't forget to remove phi nodes from the value numbering
 table after we collapse them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61358 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/GVN.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp
index cd2dcf53d40..e5eef8f99e8 100644
--- a/lib/Transforms/Scalar/GVN.cpp
+++ b/lib/Transforms/Scalar/GVN.cpp
@@ -1313,6 +1313,8 @@ bool GVN::processInstruction(Instruction *I,
       p->replaceAllUsesWith(constVal);
       if (isa<PointerType>(constVal->getType()))
         MD->invalidateCachedPointerInfo(constVal);
+      VN.erase(p);
+      
       toErase.push_back(p);
     } else {
       localAvail[I->getParent()]->table.insert(std::make_pair(num, I));