contrib/gcc/gcse.c

1726 	  && !find_reg_note (insn, REG_EH_REGION, NULL_RTX)
1736 	  && (note == NULL_RTX || ! MEM_P (XEXP (note, 0))))
1764 		   || ((tmp = next_nonnote_insn (insn)) != NULL_RTX
1784 	   && ! find_reg_note (insn, REG_EH_REGION, NULL_RTX)
1794 	   && ((note = find_reg_note (insn, REG_EQUIV, NULL_RTX)) == 0
2087 	  && implicit_sets[current_bb->index] != NULL_RTX)
2096 	    if (find_reg_note (insn, REG_LIBCALL, NULL_RTX))
2098 	    else if (table->set_p && find_reg_note (insn, REG_RETVAL, NULL_RTX))
2101 	    if (!table->set_p && find_reg_note (insn, REG_RETVAL, NULL_RTX))
2795 	note_src = NULL_RTX;
2797   else note_src = NULL_RTX;
2804   if (setcc != NULL_RTX
2817     setcc = NULL_RTX;
3095 	      && (!(note = find_reg_note (l->setting_insn, REG_EQUIV, NULL_RTX))
3202 	      rtx note = find_reg_note (insn, REG_LIBCALL, NULL_RTX);
3209 	      note = find_reg_note (insn, REG_RETVAL, NULL_RTX);
3711 	  setcc = NULL_RTX;
4015   while (NEXT_INSN (pat_end) != NULL_RTX)
4047       note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX);
4154 	    if ((insert & 1) != 0 && index_map[j]->reaching_reg != NULL_RTX)
4246       first_set = NULL_RTX;
4247       set = NULL_RTX;
4256 	      if (first_set == NULL_RTX)
4267       if (set == NULL_RTX)
5089   ptr->pattern_regs = NULL_RTX;
5090   ptr->loads        = NULL_RTX;
5091   ptr->stores       = NULL_RTX;
5092   ptr->reaching_reg = NULL_RTX;
5431       for ( ; list != NULL_RTX; list = XEXP (list, 1))
5543   return extract_mentioned_regs_helper (x, NULL_RTX);
5634    -- if the processed expression is not anticipatable, NULL_RTX is added
5676   if (find_reg_note (insn, REG_EH_REGION, NULL_RTX))
5699       if (tmp != NULL_RTX
5706 	tmp = NULL_RTX;
5838 	  LAST_AVAIL_CHECK_FAILURE(ptr) = NULL_RTX;
5840 	      && (tmp = XEXP (ANTIC_STORE_LIST (ptr), 0)) == NULL_RTX)
6020 	*fail_insn = NULL_RTX;
6189   if (expr->reaching_reg == NULL_RTX)
6358   note = find_reg_note (insn, REG_RETVAL, NULL_RTX);
6362       note = find_reg_note (pair, REG_LIBCALL, NULL_RTX);
6365   note = find_reg_note (insn, REG_LIBCALL, NULL_RTX);
6369       note = find_reg_note (pair, REG_RETVAL, NULL_RTX);
6407   if (expr->reaching_reg == NULL_RTX)