!0 = !DISubprogram(name: "foo", linkageName: "foo", line: 53, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !14, scope: !1, type: !3, function: i32 ()* @foo)
!1 = !DIFile(filename: "", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 114084)", isOptimized: false, emissionKind: 0, file: !15, enums: !16, retainedTypes: !16, subprograms: !13)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 114084)", isOptimized: false, emissionKind: 0, file: !15, enums: !16, retainedTypes: !16, subprograms: !13)
!3 = !DISubroutineType(types: !4)
!4 = !{!5}
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)