From ff247d2ed41dac50d99c5ff534b12f33bb57310a Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Mon, 10 Mar 2008 07:59:01 +0000
Subject: [PATCH] Doh

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48140 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 1b00855a671..3a8c46815c8 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1102,12 +1102,13 @@ SDOperand DAGCombiner::visitSUB(SDNode *N) {
   }
   
   // fold (sub x, x) -> 0
-  if (N0 == N1)
+  if (N0 == N1) {
     if (ISD::isBuildVectorAllZeros(N0.Val))
       // Zero vectors might be normalized to a particular vector type to ensure
       // they are CSE'd. Return it as it is.
       return N0;
     return DAG.getConstant(0, N->getValueType(0));
+  }
   // fold (sub c1, c2) -> c1-c2
   if (N0C && N1C)
     return DAG.getNode(ISD::SUB, VT, N0, N1);
-- 
2.11.0