https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70594
--- Comment #28 from Jakub Jelinek <jakub at gcc dot gnu.org> --- For the #c0 difference with the #c20 instrumentation there is: /tmp/uids:"yynewstate" label_decl 101636 0 3 /tmp/uids:"yyabortlab" label_decl 101638 0 3 /tmp/uids:"yyacceptlab" label_decl 101639 0 3 /tmp/uids:"yyacceptlab" label_decl 139896 0 2 /tmp/uids:"yyabortlab" label_decl 139897 0 2 /tmp/uids:"yynewstate" label_decl 139898 0 2 /tmp/uids_:"yynewstate" label_decl 101633 0 3 /tmp/uids_:"yyabortlab" label_decl 101635 0 3 /tmp/uids_:"yyacceptlab" label_decl 101636 0 3 /tmp/uids_:"yynewstate" label_decl 139354 0 2 /tmp/uids_:"yyacceptlab" label_decl 139357 0 2 /tmp/uids_:"yyabortlab" label_decl 139358 0 2 which means that it is all about LABEL_DECLs, which are first created using build_decl in the same order, just with tiny differences in DECL_UID, but then the are copy_node copied in different order. So guess the question is why they are copied in the different order.
