Introduce analysis pass to compute PostDominators in the new pass manager. NFC

Differential Revision: http://reviews.llvm.org/D17537

llvm-svn: 261882
diff --git a/llvm/lib/Analysis/Analysis.cpp b/llvm/lib/Analysis/Analysis.cpp
index 8117419..9c53ded 100644
--- a/llvm/lib/Analysis/Analysis.cpp
+++ b/llvm/lib/Analysis/Analysis.cpp
@@ -60,7 +60,7 @@
   initializeMemoryDependenceAnalysisPass(Registry);
   initializeModuleDebugInfoPrinterPass(Registry);
   initializeObjCARCAAWrapperPassPass(Registry);
-  initializePostDominatorTreePass(Registry);
+  initializePostDominatorTreeWrapperPassPass(Registry);
   initializeRegionInfoPassPass(Registry);
   initializeRegionViewerPass(Registry);
   initializeRegionPrinterPass(Registry);