declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
; !0 should conform to the format of DIVariable.
-!0 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "a", arg: 0, scope: !DISubprogram())
+!0 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "a", arg: 1, scope: !DISubprogram())