[llvm] r288671 - Use range based for loop. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Mon Dec  5 08:25:04 2016
New Revision: 288671

URL: http://llvm.org/viewvc/llvm-project?rev=288671&view=rev
Log:
Use range based for loop. NFCI.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=288671&r1=288670&r2=288671&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Mon Dec  5 08:25:04 2016
@@ -27396,13 +27396,10 @@ static SDValue combineShuffleOfConcatUnd
   // index, but elements from the second source no longer need to skip an undef.
   SmallVector<int, 8> Mask;
   int NumElts = VT.getVectorNumElements();
-  for (int i = 0; i < NumElts; ++i) {
-    int Elt = cast<ShuffleVectorSDNode>(N)->getMaskElt(i);
-    if (Elt < NumElts)
-      Mask.push_back(Elt);
-    else
-      Mask.push_back(Elt - NumElts / 2);
-  }
+
+  ShuffleVectorSDNode *SVOp = cast<ShuffleVectorSDNode>(N);
+  for (int Elt : SVOp->getMask())
+    Mask.push_back(Elt < NumElts ? Elt : (Elt - NumElts / 2));
 
   SDLoc DL(N);
   SDValue Concat = DAG.getNode(ISD::CONCAT_VECTORS, DL, VT, N0.getOperand(0),