bb-reorder.c (make_reorder_chain, [...]): Use FOR_EACH_BB macros to iterate over basic block chain.

	* bb-reorder.c (make_reorder_chain, make_reorder_chain_1):
	Use FOR_EACH_BB macros to iterate over basic block chain.
	* cfg.c (clear_edges, clear_bb_flags, dump_flow_info,
	alloc_aux_for_blocks, clear_aux_for_blocks, alloc_aux_for_edges):
	Likewise.
	* cfganal.c (set_edge_can_fallthru_flag, flow_call_edges_add,
	find_unreachable_blocks, create_edge_list, verify_edge_list,
	remove_fake_edges, add_noreturn_fake_exit_edges,
	flow_preorder_transversal_compute, flow_dfs_compute_reverse_execute):
	Likewise.
	* cfgbuild.c (make_edges, find_basic_blocks, find_many_sub_basic_blocks,
	find_sub_basic_blocks): Likewise.
	* cfgcleanup.c (try_optimize_cfg, delete_unreachable_blocks):
	Likewise.
	* cfglayout.c (record_effective_endpoints, cleanup_unconditional_jumps):
	Likewise.
	* cfgloop.c (flow_loops_cfg_dump, flow_loops_find):
	Likewise.
	* cfgrtl.c (compute_bb_for_insn, tidy_fallthru_edges,
	commit_edge_insertions, commit_edge_insertions_watch_calls,
	print_rtl_with_bb, verify_flow_info, purge_all_dead_edges): Likewise.
	* combine.c (combine_instructions, reg_dead_at_p): Likewise.
	* conflict.c (conflict_graph_compute): Likewise.
	* df.c (df_bitmaps_alloc, df_bitmaps_free, df_alloc, df_analyse_1,
	df_modified_p, df_refs_unlink, df_dump): Likewise.
	* dominance.c (calc_dfs_tree, calculate_dominance_info): Likewise.
	* final.c (compute_alignments): Likewise.
	* flow.c (update_life_info, update_life_info_in_dirty_blocks,
	delete_noop_moves, calculate_global_regs_live, allocate_bb_life_data,
	count_or_remove_death_notes): Likewise.
	* gcse.c (oprs_unchanged_p, record_last_reg_set_info,
	compute_hash_table, compute_kill_rd, compute_rd, compute_ae_kill,
	classic_gcse, compute_transp, cprop, compute_pre_data,
	compute_transpout, invalidate_nonnull_info,
	delete_null_pointer_checks_1, delete_null_pointer_checks,
	compute_code_hoist_vbeinout, hoist_code, compute_ld_motion_mems,
	compute_store_table, build_store_vectors, store_motion): Likewise.
	* global.c (global_conflicts, mark_elimination): Likewise.
	* graph.c (print_rtl_graph_with_bb): Likewise.
	* haifa-sched.c (sched_init): Likewise.
	* ifcvt.c (if_convert): Likewise.
	* lcm.c (compute_antinout_edge, compute_laterin, compute_insert_delete,
	compute_available, compute_nearerout, compute_rev_insert_delete,
	optimize_mode_switching): Likewise.
	* local-alloc.c (local_alloc, update_equiv_regs): Likewise.
	* predict.c (estimate_probability, note_prediction_to_br_prob,
	propagate_freq, counts_to_freqs, expensive_function_p,
	estimate_bb_frequencies): Likewise.
	* profile.c (instrument_edges, get_exec_counts,
	compute_branch_probabilities, compute_checksum, branch_prob,
	find_spanning_tree): Likewise.
	* recog.c (split_all_insns, peephole2_optimize): Likewise.
	* reg-stack.c (reg_to_stack, convert_regs_entry, convert_regs):
	Likewise.
	* regclass.c (scan_one_insn, regclass): Likewise.
	* regmove.c (mark_flags_life_zones, regmove_optimize,
	record_stack_memrefs): Likewise.
	* regrename.c (regrename_optimize, copyprop_hardreg_forward): Likewise.
	* reload1.c (reload, reload_combine, fixup_abnormal_edges): Likewise.
	* resource.c (find_basic_block): Likewise.
	* sched-ebb.c (schedule_ebbs): Likewise.
	* sched-rgn.c (is_cfg_nonregular, build_control_flow,
	find_single_block_region, find_rgns, schedule_insns)
	* sibcall.c (optimize_sibling_and_tail_recursive_call)
	* ssa-ccp.c (optimize_unexecutable_edges,
	ssa_ccp_df_delete_unreachable_insns): Likewise.
	* ssa-dce.c (ssa_eliminate_dead_code): Likewise.
	* ssa.c (find_evaluations, compute_dominance_frontiers_1,
	rename_block, convert_to_ssa, compute_conservative_reg_partition,
	compute_coalesced_reg_partition, rename_equivalent_regs,
	convert_from_ssa): Likewise.
	* config/ia64/ia64.c (emit_predicate_relation_info, process_epilogue,
	process_for_unwind_directive): Likewise.

	* df.c (FOR_ALL_BBS): Removed.
	* gcse.c (struct null_pointer_info): Type of current_block field
	changed.
	(struct reg_avail_info): Type of last_bb field changed.
	* config/ia64/ia64.c (block_num): Removed.
	(need_copy_state): Type changed.
	(last_block): New.

From-SVN: r53804

1 files changed, 10 insertions, 9 deletions

diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c
index 1e4056a..a2ff17d 100644
--- a/gcc/cfgcleanup.c
+++ b/gcc/cfgcleanup.c
@@ -1577,16 +1577,16 @@ static bool
 try_optimize_cfg (mode)
      int mode;
 {
-  int i;
   bool changed_overall = false;
   bool changed;
   int iterations = 0;
+  basic_block bb, b;
 
   if (mode & CLEANUP_CROSSJUMP)
     add_noreturn_fake_exit_edges ();
 
-  for (i = 0; i < n_basic_blocks; i++)
-    update_forwarder_flag (BASIC_BLOCK (i));
+  FOR_EACH_BB (bb)
+    update_forwarder_flag (bb);
 
   if (mode & CLEANUP_UPDATE_LIFE)
     clear_bb_flags ();
@@ -1606,9 +1606,9 @@ try_optimize_cfg (mode)
 		     "\n\ntry_optimize_cfg iteration %i\n\n",
 		     iterations);
 
-	  for (i = 0; i < n_basic_blocks;)
+	  for (b = ENTRY_BLOCK_PTR->next_bb; b != EXIT_BLOCK_PTR;)
 	    {
-	      basic_block c, b = BASIC_BLOCK (i);
+	      basic_block c;
 	      edge s;
 	      bool changed_here = false;
 
@@ -1721,7 +1721,7 @@ try_optimize_cfg (mode)
 	      /* Don't get confused by the index shift caused by
 		 deleting blocks.  */
 	      if (!changed_here)
-		i = b->index + 1;
+		b = b->next_bb;
 	      else
 		changed = true;
 	    }
@@ -1753,8 +1753,9 @@ try_optimize_cfg (mode)
 bool
 delete_unreachable_blocks ()
 {
-  int i, j;
   bool changed = false;
+  basic_block b, next_bb;
+  int j = 0;
 
   find_unreachable_blocks ();
 
@@ -1762,9 +1763,9 @@ delete_unreachable_blocks ()
      as otherwise we can wind up with O(N^2) behaviour here when we
      have oodles of dead code.  */
 
-  for (i = j = 0; i < n_basic_blocks; ++i)
+  for (b = ENTRY_BLOCK_PTR->next_bb; b != EXIT_BLOCK_PTR; b = next_bb)
     {
-      basic_block b = BASIC_BLOCK (i);
+      next_bb = b->next_bb;
 
       if (!(b->flags & BB_REACHABLE))
 	{