* cgen-trace.c (first_insn_p): New static local.

	* cgen-trace.c (first_insn_p): New static local.
	(trace_insn_init): Set it.
	(trace_insn_fini): Use TRACE_PREFIX.
	(trace_insn): Rewrite to use trace_prefix.
	* sim-trace.c (trace_prefix): Don't print filename arg if NULL.
	Adjust width accordingly.

	* sim-profile.h (PROFILE_DATA): New member profile_any_p.
	(PROFILE_ANY_P,PROFILE_INSN_P,PROFILE_MEMORY): New macros.
	(PROFILE_SCACHE_P,PROFILE_PC_P,PROFILE_CORE_P): New macros.
	(PROFILE_COUNT_INSN,PROFILE_COUNT_READ,PROFILE_COUNT_WRITE): Simplify.
	(PROFILE_COUNT_CORE): Simplify.
	* sim-profile.c (profile_option_handler): Compute profile_any_p.