Extend out the block descriptor structure for debug information with
the copy/dispose helpers as appropriate.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84817 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index 82e5033..c02959f 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -1591,6 +1591,9 @@
     Context->ObjCClassRedefinitionType = GetType(ObjCClassRedef);
   if (unsigned String = SpecialTypes[pch::SPECIAL_TYPE_BLOCK_DESCRIPTOR])
     Context->setBlockDescriptorType(GetType(String));
+  if (unsigned String
+      = SpecialTypes[pch::SPECIAL_TYPE_BLOCK_EXTENDED_DESCRIPTOR])
+    Context->setBlockDescriptorExtendedType(GetType(String));
 }
 
 /// \brief Retrieve the name of the original source file name