[PM] Port of the DepndenceAnalysis to the new PM.

Ported DA to the new PM by splitting the former DependenceAnalysis Pass
into a DependenceInfo result type and DependenceAnalysisWrapperPass type
and adding a new PM-style DependenceAnalysis analysis pass returning the
DependenceInfo.

Patch by Philip Pfaffe, most of the review by Justin.

Differential Revision: http://reviews.llvm.org/D18834

llvm-svn: 269370
diff --git a/llvm/lib/Transforms/Utils/LoopSimplify.cpp b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
index f17b26c..63d4a04 100644
--- a/llvm/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
@@ -748,7 +748,7 @@
       AU.addPreserved<GlobalsAAWrapperPass>();
       AU.addPreserved<ScalarEvolutionWrapperPass>();
       AU.addPreserved<SCEVAAWrapperPass>();
-      AU.addPreserved<DependenceAnalysis>();
+      AU.addPreserved<DependenceAnalysisWrapperPass>();
       AU.addPreservedID(BreakCriticalEdgesID);  // No critical edges added.
     }