http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48214
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-21 08:30:33 UTC --- That probably means alpha machine reorg is inserting other insns in between CALL_INSN and the following NOTE_ARG_INSN_LOCATION. See r171193, r171185 and r171156 for fixes for other targets.
