!0 = !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !20, scope: !1, type: !3, function: i32 (i32)* @foo)
!1 = !DIFile(filename: "b.c", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 0, file: !20, enums: !8, retainedTypes: !8)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 0, file: !20, enums: !8, retainedTypes: !8)
!3 = !DISubroutineType(types: !4)
!4 = !{!5}
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)