From: Yi Jiang <yjiang@apple.com>
Date: Mon, 5 May 2014 23:14:46 +0000 (+0000)
Subject: Reapply: Add slp vectorization to LTO passes. The bug it exposed has been fixed by... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e3b906eb39e808b19755a6ea87a160343bd2abbd;p=oota-llvm.git

Reapply: Add slp vectorization to LTO passes. The bug it exposed has been fixed by r207983. <radar://16641956>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208013 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp
index 01ab31deca4..10c51ab553a 100644
--- a/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/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());