From: Hal Finkel <hfinkel@anl.gov>
Date: Sun, 17 Nov 2013 16:02:50 +0000 (+0000)
Subject: Add a loop rerolling flag to the PassManagerBuilder
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c8dc96be28fd1a3d6ddebbb48b8d55b61e4bd89b;p=oota-llvm.git

Add a loop rerolling flag to the PassManagerBuilder

This adds a boolean member variable to the PassManagerBuilder to control loop
rerolling (just like we have for unrolling and the various vectorization
options). This is necessary for control by the frontend. Loop rerolling remains
disabled by default at all optimization levels.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194966 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Transforms/IPO/PassManagerBuilder.h b/include/llvm/Transforms/IPO/PassManagerBuilder.h
index 3648a3dd6b0..27887749e96 100644
--- a/include/llvm/Transforms/IPO/PassManagerBuilder.h
+++ b/include/llvm/Transforms/IPO/PassManagerBuilder.h
@@ -112,6 +112,7 @@ public:
   bool SLPVectorize;
   bool LoopVectorize;
   bool LateVectorize;
+  bool RerollLoops;
 
 private:
   /// ExtensionList - This is list of all of the extensions that are registered.
diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp
index 5399e6865a7..24c5018d542 100644
--- a/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -69,6 +69,7 @@ PassManagerBuilder::PassManagerBuilder() {
     SLPVectorize = RunSLPVectorization;
     LoopVectorize = RunLoopVectorization;
     LateVectorize = LateVectorization;
+    RerollLoops = RunLoopRerolling;
 }
 
 PassManagerBuilder::~PassManagerBuilder() {
@@ -220,7 +221,7 @@ void PassManagerBuilder::populateModulePassManager(PassManagerBase &MPM) {
 
   addExtensionsToPM(EP_ScalarOptimizerLate, MPM);
 
-  if (RunLoopRerolling)
+  if (RerollLoops)
     MPM.add(createLoopRerollPass());
   if (SLPVectorize)
     MPM.add(createSLPVectorizerPass());   // Vectorize parallel scalar chains.