commit 4b206bdfd0839fe61fda3e0b6955a80646a93977
author Craig Topper <craig.topper@gmail.com> Mon Apr 09 05:55:33 2012 +0000
committer Craig Topper <craig.topper@gmail.com> Mon Apr 09 05:55:33 2012 +0000
tree f254db10cd8a384e3cb81c9f50000cfeeb32e459
parent 3029a0c56a1e4249746ff6b54d825e88fee6cddf

Optimize code slightly. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154307 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 036f039..a910e34 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -7723,12 +7723,13 @@
     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]);