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

llvm-svn: 131238

2 files changed, 14 insertions, 9 deletions

diff --git a/llvm/include/llvm/Analysis/DebugInfo.h b/llvm/include/llvm/Analysis/DebugInfo.h
index c6cc8f7665e..a01b5a3a86b 100644
--- a/llvm/include/llvm/Analysis/DebugInfo.h
+++ b/llvm/include/llvm/Analysis/DebugInfo.h
@@ -49,15 +49,16 @@ namespace llvm {
   class DIDescriptor {
   public:
     enum {
-      FlagPrivate          = 1 << 0,
-      FlagProtected        = 1 << 1,
-      FlagFwdDecl          = 1 << 2,
-      FlagAppleBlock       = 1 << 3,
-      FlagBlockByrefStruct = 1 << 4,
-      FlagVirtual          = 1 << 5,
-      FlagArtificial       = 1 << 6,
-      FlagExplicit         = 1 << 7,
-      FlagPrototyped       = 1 << 8
+      FlagPrivate            = 1 << 0,
+      FlagProtected          = 1 << 1,
+      FlagFwdDecl            = 1 << 2,
+      FlagAppleBlock         = 1 << 3,
+      FlagBlockByrefStruct   = 1 << 4,
+      FlagVirtual            = 1 << 5,
+      FlagArtificial         = 1 << 6,
+      FlagExplicit           = 1 << 7,
+      FlagPrototyped         = 1 << 8,
+      FlagObjcClassExtension = 1 << 9
     };
   protected:
     const MDNode *DbgNode;
@@ -271,6 +272,9 @@ namespace llvm {
     bool isArtificial() const {
       return (getFlags() & FlagArtificial) != 0;
     }
+    bool isObjcClassExtension() const {
+      return (getFlags() & FlagObjcClassExtension) != 0;
+    }
     bool isValid() const {
       return DbgNode && (isBasicType() || isDerivedType() || isCompositeType());
     }
diff --git a/llvm/include/llvm/Support/Dwarf.h b/llvm/include/llvm/Support/Dwarf.h
index f6d680b8b9d..7fecf6f5f0f 100644
--- a/llvm/include/llvm/Support/Dwarf.h
+++ b/llvm/include/llvm/Support/Dwarf.h
@@ -235,6 +235,7 @@ enum dwarf_constants {
   DW_AT_APPLE_property_getter = 0x3fe9,
   DW_AT_APPLE_property_setter = 0x3fea,
   DW_AT_APPLE_property_attribute = 0x3feb,
+  DW_AT_APPLE_objc_class_extension = 0x3fec,
 
   // Attribute form encodings
   DW_FORM_addr = 0x01,