Index: include/llvm/Analysis/RegionInfo.h
===================================================================
--- include/llvm/Analysis/RegionInfo.h
+++ include/llvm/Analysis/RegionInfo.h
@@ -516,10 +516,9 @@
 
   /// @brief Remove a subregion from this Region.
   ///
-  /// The subregion is not deleted, as it will probably be inserted into another
-  /// region.
-  /// @param SubRegion The SubRegion that will be removed.
-  RegionT *removeSubRegion(RegionT *SubRegion);
+  /// @param SubRegion The SubRegion that will be removed from this region's
+  /// children, and then deleted.
+  void removeSubRegion(RegionT *SubRegion);
 
   /// @brief Move all direct child nodes of this Region to another Region.
   ///
Index: include/llvm/Analysis/RegionInfoImpl.h
===================================================================
--- include/llvm/Analysis/RegionInfoImpl.h
+++ include/llvm/Analysis/RegionInfoImpl.h
@@ -398,7 +398,7 @@
 }
 
 template <class Tr>
-typename Tr::RegionT *RegionBase<Tr>::removeSubRegion(RegionT *Child) {
+void RegionBase<Tr>::removeSubRegion(RegionT *Child) {
   assert(Child->parent == this && "Child is not a child of this region!");
   Child->parent = nullptr;
   typename RegionSet::iterator I =
@@ -406,8 +406,7 @@
         return R.get() == Child;
       });
   assert(I != children.end() && "Region does not exit. Unable to remove.");
-  children.erase(children.begin() + (I - begin()));
-  return Child;
+  children.erase(I);
 }
 
 template <class Tr>