Let Objective-C front-end identify class extension, in dwarf output, using an attribute DW_AT_APPLE_objc_class_extension.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131238 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 0 deletions

diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 98af7a41e7..4eb4094775 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -766,6 +766,10 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
       addToContextOwner(&Buffer, Context);
     }
 
+    if (CTy.isObjcClassExtension())
+      addUInt(&Buffer, dwarf::DW_AT_APPLE_objc_class_extension,
+              dwarf::DW_FORM_flag, 1);
+
     if (Tag == dwarf::DW_TAG_class_type) 
       addTemplateParams(Buffer, CTy.getTemplateParams());
 
diff --git a/lib/Support/Dwarf.cpp b/lib/Support/Dwarf.cpp
index 74a9fda7ab..cbf8aad5f2 100644
--- a/lib/Support/Dwarf.cpp
+++ b/lib/Support/Dwarf.cpp
@@ -207,6 +207,7 @@ const char *llvm::dwarf::AttributeString(unsigned Attribute) {
   case DW_AT_APPLE_property_getter:      return "DW_AT_APPLE_property_getter";
   case DW_AT_APPLE_property_setter:      return "DW_AT_APPLE_property_setter";
   case DW_AT_APPLE_property_attribute:   return "DW_AT_APPLE_property_attribute";
+  case DW_AT_APPLE_objc_class_extension: return "DW_AT_APPLE_objc_class_extension";
   }
   return 0;
 }