contrib/gcc/ifcvt.c

381   basic_block else_bb = ce_info->else_bb;	/* ELSE or NULL */
401       if (else_bb || ! ce_info->and_and_p)
429   if (else_bb)
432       else_start = first_active_insn (else_bb);
433       else_end = last_active_insn (else_bb, TRUE);
434       n_insns += ce_info->num_else_insns = count_bb_insns (else_bb);
540   then_mod_ok = (else_bb == NULL_BLOCK);
552   if (else_bb && else_end
2070       if (ce_info->else_bb || !ce_info->and_and_p)
2179   basic_block else_bb = ce_info->else_bb;	/* ELSE or NULL */
2220   if (else_bb)
2222       insn_b = first_active_insn (else_bb);
2224 	  || insn_b != last_active_insn (else_bb, FALSE)
2290   if_info.b_unconditional = else_bb == 0;
2304       if (insn_b && else_bb)
2308 	  if (else_bb && insn_b == BB_END (else_bb))
2309 	    BB_END (else_bb) = PREV_INSN (insn_b);
2380   if (insn_b && else_bb)
2481   basic_block else_bb = ce_info->else_bb;
2511       || (else_bb && !check_cond_move_block (else_bb, else_vals, cond)))
2582   if (else_bb)
2584       FOR_BB_INSNS (else_bb, insn)
2623       loc_insn = first_active_insn (else_bb);
2631   if (else_bb)
2633       FOR_BB_INSNS (else_bb, insn)
2687   basic_block else_bb = ce_info->else_bb;	/* ELSE or NULL */
2729   if (else_bb)
2731       merge_blocks (combo_bb, else_bb);
2842   ce_info.else_bb = else_edge->dest;
2951   basic_block else_bb = ce_info->else_bb;
2972       if ((n_insns = block_jumps_and_fallthru_p (bb, else_bb)) >= 0)
2975 	  target_bb = else_bb;
3029   FOR_EACH_EDGE (cur_edge, ei, else_bb->preds)
3050       if (single_pred_p (else_bb))
3064 	  join_bb = else_bb;
3065 	  else_bb = NULL_BLOCK;
3073   else if (single_succ (then_bb) == else_bb)
3075       join_bb = else_bb;
3076       else_bb = NULL_BLOCK;
3082   else if (single_succ_p (else_bb)
3083 	   && single_succ (then_bb) == single_succ (else_bb)
3084 	   && single_pred_p (else_bb)
3085 	   && ! (single_succ_edge (else_bb)->flags & EDGE_COMPLEX)
3086 	   && ! (flow2_completed && tablejump_p (BB_END (else_bb), NULL, NULL)))
3087     join_bb = single_succ (else_bb);
3100 	       (else_bb) ? "-ELSE" : "",
3107       if (else_bb)
3109 		 else_bb->index,
3110 		 BB_HEAD (else_bb) ? (int)INSN_UID (BB_HEAD (else_bb)) : -1);
3138   if (else_bb && (next = next->next_bb) != else_bb)
3142       if (else_bb)
3149   ce_info->else_bb = else_bb;
3162   basic_block else_bb = else_edge->dest;
3171     trap_bb = then_bb, other_bb = else_bb;
3172   else if ((trap = block_has_only_trap (else_bb)) != NULL)
3173     trap_bb = else_bb, other_bb = then_bb;
3233       new_ce_info.else_bb = NULL;
3360   basic_block else_bb = else_edge->dest, new_bb;
3377       || (BB_END (else_bb)
3378 	  && find_reg_note (BB_END (else_bb), REG_CROSSING_JUMP,
3409   if (! dead_or_predicable (test_bb, then_bb, else_bb,
3417 	      else_bb->il.rtl->global_live_at_start,
3422      followed by else_bb, i.e. deleting then_bb allows test_bb to fall
3423      thru to else_bb.  */
3425   if (then_bb->next_bb == else_bb
3427       && else_bb != EXIT_BLOCK_PTR)
3429       redirect_edge_succ (FALLTHRU_EDGE (test_bb), else_bb);
3434                                              else_bb);
3465   basic_block else_bb = else_edge->dest;
3483       || (BB_END (else_bb)
3484 	  && find_reg_note (BB_END (else_bb), REG_CROSSING_JUMP,
3489   if (!single_succ_p (else_bb))
3492     else_succ = single_succ_edge (else_bb);
3499   if (!single_pred_p (else_bb))
3521 	     test_bb->index, else_bb->index);
3524   if (! cheap_bb_rtx_cost_p (else_bb, COSTS_N_INSNS (BRANCH_COST)))
3528   if (! dead_or_predicable (test_bb, else_bb, then_bb, else_succ->dest, 0))
3536 	      else_bb->il.rtl->global_live_at_end);
3538   delete_basic_block (else_bb);