Reverting r138695 to see if it fixes clang self host.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138701 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/RegionPass.cpp b/lib/Analysis/RegionPass.cpp
index 3a3529b..80eda79 100644
--- a/lib/Analysis/RegionPass.cpp
+++ b/lib/Analysis/RegionPass.cpp
@@ -27,8 +27,8 @@
 
 char RGPassManager::ID = 0;
 
-RGPassManager::RGPassManager()
-  : FunctionPass(ID), PMDataManager() {
+RGPassManager::RGPassManager(int Depth)
+  : FunctionPass(ID), PMDataManager(Depth) {
   skipThisRegion = false;
   redoThisRegion = false;
   RI = NULL;
@@ -250,7 +250,7 @@
     PMDataManager *PMD = PMS.top();
 
     // [1] Create new Region Pass Manager
-    RGPM = new RGPassManager();
+    RGPM = new RGPassManager(PMD->getDepth() + 1);
     RGPM->populateInheritedAnalysis(PMS);
 
     // [2] Set up new manager's top level manager