From e3ad4834ae9d911e4a75a90517d0dd7da3f74758 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Mon, 9 Apr 2012 05:55:33 +0000
Subject: Optimize code slightly. No functionality change.

llvm-svn: 154307
---
 llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

(limited to 'llvm/lib/CodeGen/SelectionDAG')

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 036f0392a03..a910e34579e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -7723,12 +7723,13 @@ SDValue DAGCombiner::visitVECTOR_SHUFFLE(SDNode *N) {
     SmallVector<int, 8> NewMask;
     for (unsigned i = 0; i != NumElts; ++i) {
       int Idx = SVN->getMaskElt(i);
-      if (Idx < 0)
-        NewMask.push_back(Idx);
-      else if (Idx < (int)NumElts)
-        NewMask.push_back(Idx + NumElts);
-      else
-        NewMask.push_back(Idx - NumElts);
+      if (Idx >= 0) {
+        if (Idx < (int)NumElts)
+          Idx += NumElts;
+        else
+          Idx -= NumElts;
+      }
+      NewMask.push_back(Idx);
     }
     return DAG.getVectorShuffle(VT, N->getDebugLoc(), N1, DAG.getUNDEF(VT),
                                 &NewMask[0]);
-- 
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