[llvm] r207516 - [BUG] Fix -Wunused-variable warning in Release mode. Thnx to Kostya Serebryany for pointing.

[Zinovy Nis]

Author: zinovy.nis
Date: Tue Apr 29 04:45:08 2014
New Revision: 207516

URL: http://llvm.org/viewvc/llvm-project?rev=207516&view=rev
Log:
[BUG] Fix -Wunused-variable warning in Release mode. Thnx to Kostya Serebryany for pointing.

Modified:
    llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp

Modified: llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp?rev=207516&r1=207515&r2=207516&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp (original)
+++ llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp Tue Apr 29 04:45:08 2014
@@ -5096,9 +5096,11 @@ LoopVectorizationCostModel::selectVector
   }
 
   float Cost = expectedCost(1);
+#ifndef NDEBUG
   const float ScalarCost = Cost;
+#endif /* NDEBUG */
   unsigned Width = 1;
-  DEBUG(dbgs() << "LV: Scalar loop costs: " << (int)Cost << ".\n");
+  DEBUG(dbgs() << "LV: Scalar loop costs: " << (int)ScalarCost << ".\n");
 
   // Ignore scalar width, because the user explicitly wants vectorization.
   if (ForceVectorization && VF > 1) {
@@ -5122,7 +5124,6 @@ LoopVectorizationCostModel::selectVector
   DEBUG(if (ForceVectorization && Width > 1 && Cost >= ScalarCost) dbgs()
         << "LV: Vectorization seems to be not beneficial, "
         << "but was forced by a user.\n");
-  (void)ScalarCost;
   DEBUG(dbgs() << "LV: Selecting VF: "<< Width << ".\n");
   Factor.Width = Width;
   Factor.Cost = Width * Cost;