[Dwarf] Add dsymutil Atom extensions. NFC

This patch extends the atom types used by the Apple accelerator tables
with two dsymutil extensions:

 - DW_ATOM_type_type_flags
 - DW_ATOM_qual_name_hash

llvm-svn: 323414

llvm/include/llvm/BinaryFormat/Dwarf.h

@@ -361,13 +361,16 @@ inline bool isUnitType(dwarf::Tag T) {
 // Constants for the DWARF v5 Accelerator Table Proposal
 enum AcceleratorTable {
   // Data layout descriptors.
-  DW_ATOM_null = 0u,       // Marker as the end of a list of atoms.
+  DW_ATOM_null = 0u,       ///  Marker as the end of a list of atoms.
   DW_ATOM_die_offset = 1u, // DIE offset in the debug_info section.
   DW_ATOM_cu_offset = 2u, // Offset of the compile unit header that contains the
                           // item in question.
   DW_ATOM_die_tag = 3u,   // A tag entry.
   DW_ATOM_type_flags = 4u, // Set of flags for a type.
 
+  DW_ATOM_type_type_flags = 5u, // Dsymutil type extension.
+  DW_ATOM_qual_name_hash = 6u,  // Dsymutil qualified hash extension.
+
   // DW_ATOM_type_flags values.
 
   // Always set for C++, only set for ObjC if this is the @implementation for a

llvm/lib/BinaryFormat/Dwarf.cpp

@@ -498,7 +498,10 @@ StringRef llvm::dwarf::AtomTypeString(unsigned AT) {
   case DW_ATOM_die_tag:
     return "DW_ATOM_die_tag";
   case DW_ATOM_type_flags:
+  case DW_ATOM_type_type_flags:
     return "DW_ATOM_type_flags";
+  case DW_ATOM_qual_name_hash:
+    return "DW_ATOM_qual_name_hash";
   }
   return StringRef();
 }