!0 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "clang", isOptimized: true, emissionKind: 0, file: !1, enums: !{}, retainedTypes: !{})
!1 = !DIFile(filename: "t.c", directory: "")
!16 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
-!2 = !DISubprogram()
+!2 = distinct !DISubprogram()
!22 = !DILocalVariable(name: "x", line: 16, scope: !2, file: !1, type: !16)
!23 = !{i32 1, !"Debug Info Version", i32 3}