Reapply: Add slp vectorization to LTO passes. The bug it exposed has …

…been fixed by r207983. <radar://16641956> llvm-svn: 208013
llvm · May 5, 2014 · 79eb0aa · 79eb0aa
1 parent 80f12c2
commit 79eb0aa
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp b/llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -341,6 +341,9 @@ void PassManagerBuilder::populateLTOPassManager(PassManagerBase &PM,
   PM.add(createLoopDeletionPass());
   PM.add(createLoopVectorizePass(true, true));
 
+  // More scalar chains could be vectorized due to more alias information
+  PM.add(createSLPVectorizerPass()); // Vectorize parallel scalar chains.
+
   // Cleanup and simplify the code after the scalar optimizations.
   PM.add(createInstructionCombiningPass());