From c3983653493a97d0da49cea6829348380c4717b8 Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Mon, 14 Dec 2009 16:57:08 +0000
Subject: LSR itself doesn't need DominatorTree.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91282 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/LoopStrengthReduce.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index b114f2e..3c8deac 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -26,7 +26,6 @@
 #include "llvm/IntrinsicInst.h"
 #include "llvm/Type.h"
 #include "llvm/DerivedTypes.h"
-#include "llvm/Analysis/Dominators.h"
 #include "llvm/Analysis/IVUsers.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/LoopPass.h"
@@ -86,7 +85,6 @@ namespace {
   class LoopStrengthReduce : public LoopPass {
     IVUsers *IU;
     LoopInfo *LI;
-    DominatorTree *DT;
     ScalarEvolution *SE;
     bool Changed;
 
@@ -118,12 +116,11 @@ namespace {
       // many analyses if they are around.
       AU.addPreservedID(LoopSimplifyID);
       AU.addPreserved<LoopInfo>();
-      AU.addPreserved<DominanceFrontier>();
-      AU.addPreserved<DominatorTree>();
+      AU.addPreserved("domfrontier");
+      AU.addPreserved("domtree");
 
       AU.addRequiredID(LoopSimplifyID);
       AU.addRequired<LoopInfo>();
-      AU.addRequired<DominatorTree>();
       AU.addRequired<ScalarEvolution>();
       AU.addPreserved<ScalarEvolution>();
       AU.addRequired<IVUsers>();
@@ -2724,7 +2721,6 @@ bool LoopStrengthReduce::OptimizeLoopCountIV(Loop *L) {
 bool LoopStrengthReduce::runOnLoop(Loop *L, LPPassManager &LPM) {
   IU = &getAnalysis<IVUsers>();
   LI = &getAnalysis<LoopInfo>();
-  DT = &getAnalysis<DominatorTree>();
   SE = &getAnalysis<ScalarEvolution>();
   Changed = false;
 
-- 
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