commit 56eca9103ecbf2293842bfd6067ac26629221eaf
author Dale Johannesen <dalej@apple.com> Thu Nov 27 00:43:21 2008 +0000
committer Dale Johannesen <dalej@apple.com> Thu Nov 27 00:43:21 2008 +0000
tree 23b19869c9ecc8f1bda680cbbe65d0d5f1c96017
parent bc7e0f5dd637ea365f0cb316cda68668f9e3e7d3

Add a missing case in visitADD.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60137 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/DAGCombiner.cpp

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 762fced..6b35126 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1010,6 +1010,9 @@
   // fold (A+(B-A)) -> B
   if (N1.getOpcode() == ISD::SUB && N0 == N1.getOperand(1))
     return N1.getOperand(0);
+  // fold ((B-A)+A) -> B
+  if (N0.getOpcode() == ISD::SUB && N1 == N0.getOperand(1))
+    return N0.getOperand(0);
 
   if (!VT.isVector() && SimplifyDemandedBits(SDValue(N, 0)))
     return SDValue(N, 0);