Keep track of inherited analysis (e.g. dominator tree).

llvm-svn: 53088
diff --git a/llvm/lib/Analysis/LoopPass.cpp b/llvm/lib/Analysis/LoopPass.cpp
index 2236834..4cbafab 100644
--- a/llvm/lib/Analysis/LoopPass.cpp
+++ b/llvm/lib/Analysis/LoopPass.cpp
@@ -184,6 +184,9 @@
   LI = &getAnalysis<LoopInfo>();
   bool Changed = false;
 
+  // Collect inherited analysis from Module level pass manager.
+  populateInheritedAnalysis(TPM->activeStack);
+
   // Populate Loop Queue
   for (LoopInfo::iterator I = LI->begin(), E = LI->end(); I != E; ++I)
     addLoopIntoQueue(*I, LQ);