From 86c25fd5560dd9df92ccfd37ffa2dba1a007eeae Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 14 May 2002 16:44:07 +0000
Subject: [PATCH] Fix bug:
 test/Regression/Transforms/InstCombine/2002-05-14-SubFailure.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2627 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/InstructionCombining.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index 0812fca6e97..b6727d5f9e0 100644
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -187,7 +187,7 @@ Instruction *InstCombiner::visitSub(BinaryOperator *I) {
   // not used by anyone else...
   //
   if (BinaryOperator *Op1I = dyn_cast<BinaryOperator>(Op1))
-    if (Op1I->use_size() == 1) {
+    if (Op1I->use_size() == 1 && Op1I->getOpcode() == Instruction::Sub) {
       // Swap the two operands of the subexpr...
       Value *IIOp0 = Op1I->getOperand(0), *IIOp1 = Op1I->getOperand(1);
       Op1I->setOperand(0, IIOp1);