config/rs6000/rs6000.c

17146 is_costly_group (rtx *group_insns, rtx next_insn)
17161 	  if (next == next_insn)
17163 	      cost = insn_cost (insn, link, next_insn);
17164 	      if (rs6000_is_costly_dependence (insn, next_insn, link, cost, 0))
17188 		 rtx next_insn, bool *group_end, int can_issue_more,
17197   if (next_insn == NULL_RTX)
17203   force = is_costly_group (group_insns, next_insn);
17217 	 sufficient to insert 'can_issue_more - 1' nops if next_insn is not
17218 	 a branch. If next_insn is a branch, we insert 'can_issue_more' nops;
17221       if (can_issue_more && !is_branch_slot_insn (next_insn))
17227 	  emit_insn_before (nop, next_insn);
17258 	  emit_insn_before (nop, next_insn);
17278       /* Is next_insn going to start a new group?  */
17281 	   || (can_issue_more == 1 && !is_branch_slot_insn (next_insn))
17282 	   || (can_issue_more <= 2 && is_cracked_insn (next_insn))
17284 	       insn_terminates_group_p (next_insn, previous_group)));
17328   rtx insn, next_insn;
17357       next_insn = get_next_active_insn (insn, tail);
17358       if (next_insn == NULL_RTX)
17361       /* Is next_insn going to start a new group?  */
17364 	   || (can_issue_more == 1 && !is_branch_slot_insn (next_insn))
17365 	   || (can_issue_more <= 2 && is_cracked_insn (next_insn))
17367 	       insn_terminates_group_p (next_insn, previous_group)));
17370 					next_insn, &group_end, can_issue_more,
17383       if (GET_MODE (next_insn) == TImode && can_issue_more)
17384 	PUT_MODE (next_insn, VOIDmode);
17385       else if (!can_issue_more && GET_MODE (next_insn) != TImode)
17386 	PUT_MODE (next_insn, TImode);
17388       insn = next_insn;
17405   rtx insn, next_insn;
17417   next_insn = get_next_active_insn (insn, tail);
17424       group_end = (next_insn == NULL_RTX || GET_MODE (next_insn) == TImode);
17426       if (next_insn == NULL_RTX)
17432 	     (between insn and next_indn), and neither insn nor next_insn will
17438 	      && !insn_terminates_group_p (next_insn, previous_group))
17440 	      if (!is_branch_slot_insn (next_insn))
17446 		  emit_insn_before (nop, next_insn);
17455       insn = next_insn;
17456       next_insn = get_next_active_insn (insn, tail);