PR middle-end/55094
	* builtins.c (expand_builtin_trap): Add REG_ARGS_SIZE note
	on the trap insn for !ACCUMULATE_OUTGOING_ARGS.
	* cfgcleanup.c (outgoing_edges_match): Don't look at debug insns
	on the first old_insns_match_p call.  For !ACCUMULATE_OUTGOING_ARGS
	fail if the last real insn doesn't have REG_ARGS_SIZE note.

	* gcc.dg/pr55094.c: New test.

From-SVN: r193649