basic-block.h (BB_REACHABLE): Renumber.

	* basic-block.h (BB_REACHABLE): Renumber.
	(BB_DIRTY, BB_NEW): New flags.
	(clear_bb_flags): Declare.
	(update_life_info_in_dirty_blocks): Declare.
	* cfg.c (clear_bb_flags): New function.
	* cfgrtl.c (create_basic_block_structure): Set flags to BB_NEW.
	* emit-rtl.c (add_insn_after, add_insn_before, remove_insn,
	reorder_insns, emit_insn_after): Mark block as dirty.
	* flow.c (update_life_info): Fix clearing of PROP_LOG_LINKS.
	(update_life_info_in_dirty_blocks): New function.
	* recog.c (apply_change_group): Dirtify block.

	* cse.c (cse_insn): Reorder emitting of jump insn to keep
	cfg consistent.
	* gcse.c (delete_null_pointer_checks): Likewise.

	* toplev.c (dump_file_index): Move cse2 after bp,
	add DFI_null
	(dump_file_info): Similary.
	(rest_of_compilation): Avoid most of CFG rebuilds;
	do first if converision after null pointer checks, do cse2
	after branch prediction; avoid full liveness rebuild after
	initializing subregs.
	* invoke.texi (-d options): Document -du, renumber.

	* cfgcleanup.c (bb_flags): Remove BB_UPDATE_LIFE.
	(notice_new_block): Do not set BB_UPDATE_LIFE.
	(try_forward_edges, merge_blocks_move_predecessor_nojumps,
	 merge_blocks_move_successor_nojumps, merge_blocks,
	 try_crossjump_to_edge): Likewise.
	(try_optimize_cfg): Likewise; use update_life_info_in_dirty_blocks.
	* cfgrtl.c (merge_blocks_nomove): Copy b's flags to a.
	* ifcvt.c (SET_UPDATE_LIFE, UPDATE_LIFE): Kill.
	(merge_of_block): Do not use life_data_ok.
	(find_if_case_1): Do not use SET_UPDATE_LIFE.
	(if_convert): Use BB_DIRTY mechanizm to update life.
	* lcm.c (optimize_mode_switching): Update
	update_life_info_in_dirty_blocks

From-SVN: r50127

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/cfg.c b/gcc/cfg.c
index 8adcef6..a33beff 100644
--- a/gcc/cfg.c
+++ b/gcc/cfg.c
@@ -38,6 +38,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 	 dump_flow_info, debug_flow_info, dump_edge_info
      - Allocation of AUX fields for basic blocks
 	 alloc_aux_for_blocks, free_aux_for_blocks, alloc_aux_for_block
+     - clear_bb_flags
  */
 
 #include "config.h"
@@ -440,6 +441,16 @@ redirect_edge_pred (e, new_pred)
   new_pred->succ = e;
   e->src = new_pred;
 }
+
+void
+clear_bb_flags ()
+{
+  int i;
+  ENTRY_BLOCK_PTR->flags = 0;
+  EXIT_BLOCK_PTR->flags = 0;
+  for (i = 0; i < n_basic_blocks; i++)
+    BASIC_BLOCK (i)->flags = 0;
+}
 
 void
 dump_flow_info (file)