basic-block.h (single_succ_p, [...]): New inline functions.

	* basic-block.h (single_succ_p, single_pred_p, single_succ_edge,
	single_pred_edge, single_succ, single_pred): New inline functions.
	* bb-reorder.c (rotate_loop, find_traces_1_round,
	add_labels_and_missing_jumps, fix_up_fall_thru_edges,
	duplicate_computed_gotos): Use the single_succ/pred functions.
	* cfganal.c (forwarder_block_p): Ditto.
	* cfgbuild.c (compute_outgoing_frequencies): Ditto.
	* cfgcleanup.c (try_simplify_condjump, try_forward_edges,
	outgoing_edges_match, try_crossjump_to_edge, try_optimize_cfg,
	merge_seq_blocks): Ditto.
	* cfghooks.c (split_edge, tidy_fallthru_edges): Ditto.
	* cfglayout.c (fixup_reorder_chain): Ditto.
	* cfgloop.c (mark_single_exit_loops, update_latch_info,
	canonicalize_loop_headers, verify_loop_structure): Ditto.
	* cfgloopmanip.c (remove_path, unloop, loop_delete_branch_edge,
	mfb_update_loops, create_preheader, force_single_succ_latches,
	create_loop_notes): Ditto.
	* cfgrtl.c (rtl_can_merge_blocks, try_redirect_by_replacing_jump,
	force_nonfallthru_and_redirect, rtl_tidy_fallthru_edge,
	commit_one_edge_insertion, purge_dead_edges,
	cfg_layout_can_merge_blocks_p): Ditto.
	* except.c (sjlj_emit_function_enter): Ditto.
	* flow.c (init_propagate_block_info): Ditto.
	* function.c (thread_prologue_and_epilogue_insns): Ditto.
	* gcse.c (find_implicit_sets, bypass_conditional_jumps,
	insert_insn_end_bb): Ditto.
	* ifcvt.c (merge_if_block, find_if_block, find_if_case_1,
	find_if_case_2): Ditto.
	* lambda-code.c (perfect_nestify): Ditto.
	* lcm.c (optimize_mode_switching): Ditto.
	* loop-doloop.c (doloop_modify): Ditto.
	* loop-init.c (loop_optimizer_init): Ditto.
	* loop-iv.c (simplify_using_initial_values): Ditto.
	* loop-unroll.c (unroll_loop_runtime_iterations): Ditto.
	* loop-unswitch.c (unswitch_loop): Ditto.
	* modulo-sched.c (generate_prolog_epilog): Ditto.
	* predict.c (combine_predictions_for_insn, estimate_probability,
	tree_estimate_probability, last_basic_block_p,
	estimate_bb_frequencies): Ditto.
	* profile.c (branch_prob): Ditto.
	* regrename.c (copyprop_hardreg_forward): Ditto.
	* sched-rgn.c (is_cfg_nonregular, find_rgns, update_live): Ditto.
	* tracer.c (layout_superblocks): Ditto.
	* tree-cfg.c (tree_can_merge_blocks_p, tree_merge_blocks,
	cfg_remove_useless_stmts_bb, cleanup_control_flow,
	cleanup_control_expr_graph, disband_implicit_edges,
	tree_find_edge_insert_loc, bsi_commit_edge_inserts,
	tree_verify_flow_info, tree_make_forwarder_block,
	tree_forwarder_block_p, remove_forwarder_block,
	remove_forwarder_block_with_phi, merge_phi_nodes): Ditto.
	* tree-if-conv.c (tree_if_conversion): Ditto.
	* tree-mudflap.c (mf_build_check_statement_for): Ditto.
	* tree-ssa-dce.c (remove_dead_stmt): Ditto.
	* tree-ssa-dom.c (dom_opt_finalize_block): Ditto.
	* tree-ssa-loop-ch.c (should_duplicate_loop_header_p,
	copy_loop_headers): Ditto.
	* tree-ssa-loop-im.c (loop_commit_inserts): Ditto.
	* tree-ssa-loop-ivopts.c (compute_phi_arg_on_exit): Ditto.
	* tree-ssa-loop-manip.c (split_loop_exit_edge, ip_normal_pos,
	lv_adjust_loop_entry_edge, tree_ssa_loop_version): Ditto.
	* tree-ssa-loop-niter.c (simplify_using_initial_conditions): Ditto.
	* tree-ssa-loop-unswitch.c (simplify_using_entry_checks): Ditto.
	* tree-ssa-phiopt.c (tree_ssa_phiopt, value_replacement): Ditto.
	* tree-ssa-pre.c (compute_antic_aux, insert_aux, init_pre): Ditto.
	* tree-ssa-threadupdate.c (redirect_edges): Ditto.
	* tree-tailcall.c (independent_of_stmt_p, find_tail_calls,
	eliminate_tail_call, tree_optimize_tail_calls_1): Ditto.
	* tree-vect-analyze.c (vect_analyze_loop_form): Ditto.
	* tree-vect-transform.c (vect_update_ivs_after_vectorizer): Ditto.
	* tree-vectorizer.c (slpeel_update_phi_nodes_for_guard,
	slpeel_add_loop_guard): Ditto.

From-SVN: r96292

1 files changed, 7 insertions, 7 deletions

diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
index a4057f75a66..71d34614816 100644
--- a/gcc/tree-ssa-loop-manip.c
+++ b/gcc/tree-ssa-loop-manip.c
@@ -442,7 +442,7 @@ split_loop_exit_edge (edge exit)
 
   for (phi = phi_nodes (dest); phi; phi = PHI_CHAIN (phi))
     {
-      op_p = PHI_ARG_DEF_PTR_FROM_EDGE (phi, EDGE_SUCC (bb, 0));
+      op_p = PHI_ARG_DEF_PTR_FROM_EDGE (phi, single_succ_edge (bb));
 
       name = USE_FROM_PTR (op_p);
 
@@ -506,10 +506,10 @@ ip_normal_pos (struct loop *loop)
   basic_block bb;
   edge exit;
 
-  if (EDGE_COUNT (loop->latch->preds) > 1)
+  if (!single_pred_p (loop->latch))
     return NULL;
 
-  bb = EDGE_PRED (loop->latch, 0)->src;
+  bb = single_pred (loop->latch);
   last = last_stmt (bb);
   if (TREE_CODE (last) != COND_EXPR)
     return NULL;
@@ -757,7 +757,7 @@ lv_adjust_loop_entry_edge (basic_block first_head,
 
   /* Adjust edges appropriately to connect new head with first head
      as well as second head.  */
-  e0 = EDGE_SUCC (new_head, 0);
+  e0 = single_succ_edge (new_head);
   e0->flags &= ~EDGE_FALLTHRU;
   e0->flags |= EDGE_FALSE_VALUE;
   e1 = make_edge (new_head, first_head, EDGE_TRUE_VALUE);
@@ -816,12 +816,12 @@ tree_ssa_loop_version (struct loops *loops, struct loop * loop,
   *condition_bb = lv_adjust_loop_entry_edge (first_head, second_head, entry, 
 					    cond_expr); 
 
-  latch_edge = EDGE_SUCC (loop->latch->rbi->copy, 0);
+  latch_edge = single_succ_edge (loop->latch->rbi->copy);
   
   extract_true_false_edges_from_block (*condition_bb, &true_edge, &false_edge);
   nloop = loopify (loops, 
 		   latch_edge,
-		   EDGE_PRED (loop->header->rbi->copy, 0),
+		   single_pred_edge (loop->header->rbi->copy),
 		   *condition_bb, true_edge, false_edge,
 		   false /* Do not redirect all edges.  */);
 
@@ -842,7 +842,7 @@ tree_ssa_loop_version (struct loops *loops, struct loop * loop,
       (*condition_bb)->flags |= BB_IRREDUCIBLE_LOOP;
       loop_preheader_edge (loop)->flags |= EDGE_IRREDUCIBLE_LOOP;
       loop_preheader_edge (nloop)->flags |= EDGE_IRREDUCIBLE_LOOP;
-      EDGE_PRED ((*condition_bb), 0)->flags |= EDGE_IRREDUCIBLE_LOOP;
+      single_pred_edge ((*condition_bb))->flags |= EDGE_IRREDUCIBLE_LOOP;
     }
 
   /* At this point condition_bb is loop predheader with two successors,