From 61797e329101dbbe1230a9b094f8cf71a770bf33 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Thu, 11 Jun 2009 17:54:56 +0000
Subject: Fix 4366: store to null in non-default addr space should not be
 turned into unreachable.

llvm-svn: 73195
---
 llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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

diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
index 6d2ff0e3e53..03a7317138a 100644
--- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -11824,7 +11824,8 @@ Instruction *InstCombiner::visitStoreInst(StoreInst &SI) {
   if (SI.isVolatile()) return 0;  // Don't hack volatile stores.
 
   // store X, null    -> turns into 'unreachable' in SimplifyCFG
-  if (isa<ConstantPointerNull>(Ptr)) {
+  if (isa<ConstantPointerNull>(Ptr) &&
+      cast<PointerType>(Ptr->getType())->getAddressSpace() == 0) {
     if (!isa<UndefValue>(Val)) {
       SI.setOperand(0, UndefValue::get(Val->getType()));
       if (Instruction *U = dyn_cast<Instruction>(Val))
-- 
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