http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57805
Bug ID: 57805 Summary: Waste work in write_roots() Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: pchang9 at cs dot wisc.edu CC: nistor1 at illinois dot edu The problem appears in revision 200588 in version 4.9. In method "write_roots()" in gcc/gengtype.c, the loop on line 4682 should break immediately after "skip_p" is set to "1". All the iterations after "skip_p" set to "1" do not perform any useful work, at best they just set "skip_p" again to "1".