-!0 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "y", line: 2, arg: 0, scope: !1, file: !2, type: !6)
-!1 = !MDSubprogram(name: "foo", linkageName: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 2, file: !18, scope: !2, type: !4, function: i32 (i32)* @foo, variables: !15)
-!2 = !MDFile(filename: "f.c", directory: "/tmp")
-!3 = !MDCompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 1, file: !18, enums: !19, retainedTypes: !19, subprograms: !17, imports: null)
-!4 = !MDSubroutineType(types: !5)
+!0 = !DILocalVariable(name: "y", line: 2, arg: 1, scope: !1, file: !2, type: !6)
+!1 = !DISubprogram(name: "foo", linkageName: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 2, file: !18, scope: !2, type: !4, function: i32 (i32)* @foo, variables: !15)
+!2 = !DIFile(filename: "f.c", directory: "/tmp")
+!3 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 1, file: !18, enums: !19, retainedTypes: !19, subprograms: !17, imports: null)
+!4 = !DISubroutineType(types: !5)