http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50693
--- Comment #23 from Alexandre Oliva <aoliva at gcc dot gnu.org> 2011-10-25 04:48:24 UTC --- Yup. We don't even need a new debug stmt type, methinks. Say, emit the debug stmt with the LABEL_DECL, decay that to a debug stmt in cfgexpand, and turn that into a NOTE_INSN_DELETED_LABEL during var-tracking initial scanning, to minimize code motion impact.
