contrib/gcc/sched-deps.c

236    type of dependence that this link represents.  DS, if nonzero,
372           rtx link = *linkp;
376           if (XEXP (link, 0) == elem)
383                   ds_t new_status = ds | DEP_STATUS (link);
388 			  || !(DEP_STATUS (link) & SPECULATIVE))
393 			      && (DEP_STATUS (link) & SPECULATIVE))
409 			  new_status = ds_merge (DEP_STATUS (link), ds);
416               /* Clear corresponding cache entry because type of the link
421 		  enum reg_note kind = REG_NOTE_KIND (link);
439 		  && DEP_STATUS (link) != ds)
441 		  DEP_STATUS (link) = ds;
449               if ((int) dep_type < (int) REG_NOTE_KIND (link))
451                   PUT_REG_NOTE_KIND (link, dep_type);
462                       if (REG_NOTE_KIND (link) == REG_DEP_TRUE)
465                       else if (REG_NOTE_KIND (link) == REG_DEP_OUTPUT)
468                       else if (REG_NOTE_KIND (link) == REG_DEP_ANTI)
502      (or update) a link.  */
515 /* This function creates a link between INSN and ELEM under any
516    conditions.  DS describes speculative status of the link.  */
638   rtx link, prev_nonnote;
640   for (link = LOG_LINKS (insn); link ; link = XEXP (link, 1))
647 	  if (XEXP (link, 0) == i)
650       if (! sched_insns_conditions_mutex_p (i, XEXP (link, 0)))
651 	add_dependence (i, XEXP (link, 0), REG_NOTE_KIND (link));
683   rtx link;
685   link = alloc_INSN_LIST (insn, *insn_list);
686   *insn_list = link;
693   link = alloc_EXPR_LIST (VOIDmode, canon_rtx (mem), *mem_list);
694   *mem_list = link;
1129   rtx link;
1177       for (link = CALL_INSN_FUNCTION_USAGE (insn); link; link = XEXP (link, 1))
1179 	  if (GET_CODE (XEXP (link, 0)) == CLOBBER)
1180 	    sched_analyze_1 (deps, XEXP (link, 0), insn);
1182 	    sched_analyze_2 (deps, XEXP (link, 0), insn);
1487       rtx link, end_seq, r0, set;
1607 	  && (link = find_reg_note (insn, REG_LIBCALL, NULL_RTX)) != 0
1608 	  && (end_seq = XEXP (link, 0)) != 0
1618 	deps->libcall_block_tail_insn = XEXP (link, 0);
1641 add_forw_dep (rtx to, rtx link)
1645   from = XEXP (link, 0);
1670     new_link = alloc_DEPS_LIST (to, INSN_DEPEND (from), DEP_STATUS (link));
1672   PUT_REG_NOTE_KIND (new_link, REG_NOTE_KIND (link));
1691       rtx link;
1698           rtx new = 0, link, next;
1700           for (link = LOG_LINKS (insn); link; link = next)
1702               next = XEXP (link, 1);
1703               adjust_add_sorted_back_dep (insn, link, &new);
1709       for (link = LOG_LINKS (insn); link; link = XEXP (link, 1))
1710         add_forw_dep (insn, link);
1895 adjust_add_sorted_back_dep (rtx insn, rtx link, rtx *linkp)
1899   /* If the insn cannot move speculatively, but the link is speculative,
1902       && (DEP_STATUS (link) & SPECULATIVE))
1904       DEP_STATUS (link) &= ~SPECULATIVE;
1908 			  INSN_LUID (XEXP (link, 0)));
1913   if (DEP_STATUS (link) & SPECULATIVE)
1917   XEXP (link, 1) = *linkp;
1918   *linkp = link;
1927   rtx link;
1931   link = *linkp;
1934   adjust_add_sorted_back_dep (insn, link, &LOG_LINKS (insn));
1935   add_forw_dep (insn, link);
2157   /* HARD_DEP can not appear in dep_status of a link.  */