-!0 = metadata !{i32 786449, metadata !8, i32 12, metadata !"clang version 3.1 (trunk 143009)", i1 true, metadata !"", i32 0, metadata !1, metadata !1, metadata !1, metadata !3, metadata !1, metadata !""} ; [ DW_TAG_compile_unit ]
-!1 = metadata !{}
-!3 = metadata !{metadata !5}
-!5 = metadata !{i32 720948, i32 0, null, metadata !"yyyy", metadata !"yyyy", metadata !"", metadata !6, i32 1, metadata !7, i32 0, i32 1, i32* @yyyy, null} ; [ DW_TAG_variable ]
-!6 = metadata !{i32 720937, metadata !8} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720932, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
-!8 = metadata !{metadata !"z.c", metadata !"/home/nicholas"}
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 143009)", isOptimized: true, emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports: !1)
+!1 = !{}
+!3 = !{!5}
+!5 = !DIGlobalVariable(name: "yyyy", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: i32* @yyyy)
+!6 = !DIFile(filename: "z.c", directory: "/home/nicholas")
+!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!8 = !DIFile(filename: "z.c", directory: "/home/nicholas")