config/rs6000/rs6000.c

17145 is_costly_group (rtx *group_insns, rtx next_insn)
17160 	  if (next == next_insn)
17162 	      cost = insn_cost (insn, link, next_insn);
17163 	      if (rs6000_is_costly_dependence (insn, next_insn, link, cost, 0))
17187 		 rtx next_insn, bool *group_end, int can_issue_more,
17196   if (next_insn == NULL_RTX)
17202   force = is_costly_group (group_insns, next_insn);
17216 	 sufficient to insert 'can_issue_more - 1' nops if next_insn is not
17217 	 a branch. If next_insn is a branch, we insert 'can_issue_more' nops;
17220       if (can_issue_more && !is_branch_slot_insn (next_insn))
17226 	  emit_insn_before (nop, next_insn);
17257 	  emit_insn_before (nop, next_insn);
17277       /* Is next_insn going to start a new group?  */
17280 	   || (can_issue_more == 1 && !is_branch_slot_insn (next_insn))
17281 	   || (can_issue_more <= 2 && is_cracked_insn (next_insn))
17283 	       insn_terminates_group_p (next_insn, previous_group)));
17327   rtx insn, next_insn;
17356       next_insn = get_next_active_insn (insn, tail);
17357       if (next_insn == NULL_RTX)
17360       /* Is next_insn going to start a new group?  */
17363 	   || (can_issue_more == 1 && !is_branch_slot_insn (next_insn))
17364 	   || (can_issue_more <= 2 && is_cracked_insn (next_insn))
17366 	       insn_terminates_group_p (next_insn, previous_group)));
17369 					next_insn, &group_end, can_issue_more,
17382       if (GET_MODE (next_insn) == TImode && can_issue_more)
17383 	PUT_MODE (next_insn, VOIDmode);
17384       else if (!can_issue_more && GET_MODE (next_insn) != TImode)
17385 	PUT_MODE (next_insn, TImode);
17387       insn = next_insn;
17404   rtx insn, next_insn;
17416   next_insn = get_next_active_insn (insn, tail);
17423       group_end = (next_insn == NULL_RTX || GET_MODE (next_insn) == TImode);
17425       if (next_insn == NULL_RTX)
17431 	     (between insn and next_indn), and neither insn nor next_insn will
17437 	      && !insn_terminates_group_p (next_insn, previous_group))
17439 	      if (!is_branch_slot_insn (next_insn))
17445 		  emit_insn_before (nop, next_insn);
17454       insn = next_insn;
17455       next_insn = get_next_active_insn (insn, tail);