SLPVectorizer: Make it a function pass and add code for hoisting the …

…vector-gather sequence out of loops. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179562 91177308-0d34-0410-b5e6-96231b3b80d8
CIB · Apr 15, 2013 · e9a4411 · e9a4411
1 parent c9363ef
commit e9a4411
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Showing 5 changed files with 315 additions and 163 deletions.
diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -213,10 +213,8 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) {
 
   addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
 
-  if (SLPVectorize) {
-    MPM.add(createSLPVectorizerPass());
-    MPM.add(createEarlyCSEPass());
-  }
+  if (SLPVectorize)
+    MPM.add(createSLPVectorizerPass());     // Vectorize parallel scalar chains.
 
   if (BBVectorize) {
     MPM.add(createBBVectorizePass());