[llvm] r187595 - Only enable SLP-vectorization on O3 builds.

[Nadav Rotem]

Author: nadav
Date: Thu Aug  1 13:28:15 2013
New Revision: 187595

URL: http://llvm.org/viewvc/llvm-project?rev=187595&view=rev
Log:
Only enable SLP-vectorization on O3 builds.

Modified:
    llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp

Modified: llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp?rev=187595&r1=187594&r2=187595&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp Thu Aug  1 13:28:15 2013
@@ -217,7 +217,7 @@ void PassManagerBuilder::populateModuleP
   addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
 
   if (!LateVectorize) {
-    if (SLPVectorize)
+    if (SLPVectorize && OptLevel > 2)
       MPM.add(createSLPVectorizerPass());   // Vectorize parallel scalar chains.
 
     if (BBVectorize) {