Introduce DominanceFrontierAnalysis to the new PassManager to compute DominanceFrontier. NFC

Differential Revision: http://reviews.llvm.org/D17570

llvm-svn: 261903
diff --git a/llvm/lib/CodeGen/MachineRegionInfo.cpp b/llvm/lib/CodeGen/MachineRegionInfo.cpp
index 0f7ebb3..fc32183 100644
--- a/llvm/lib/CodeGen/MachineRegionInfo.cpp
+++ b/llvm/lib/CodeGen/MachineRegionInfo.cpp
@@ -105,7 +105,7 @@
   AU.setPreservesAll();
   AU.addRequiredTransitive<DominatorTreeWrapperPass>();
   AU.addRequired<PostDominatorTreeWrapperPass>();
-  AU.addRequired<DominanceFrontier>();
+  AU.addRequired<DominanceFrontierWrapperPass>();
 }
 
 void MachineRegionInfoPass::print(raw_ostream &OS, const Module *) const {