!0 = !DISubprogram(name: "foo", line: 19510, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 19510, file: !26, scope: !1, type: !3, function: i32 (i32, i64, i8*, i32)* @foo)
!1 = !DIFile(filename: "/tmp/f.c", directory: "/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 124753)", isOptimized: true, emissionKind: 0, file: !27, enums: !28, retainedTypes: !28, subprograms: !24, imports: null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 124753)", isOptimized: true, emissionKind: 0, file: !27, enums: !28, retainedTypes: !28, subprograms: !24, imports: null)
!3 = !DISubroutineType(types: !4)
!4 = !{!5}
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)