!llvm.dbg.cu = !{!1}
!0 = !{i32 2, !"Debug Info Version", i32 3}
-!1 = !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 0, file: !2, enums: !3, retainedTypes: !3, subprograms: !3)
+!1 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 0, file: !2, enums: !3, retainedTypes: !3, subprograms: !3)
!2 = !DIFile(filename: "a.c", directory: "")
!3 = !{}