From 38c1593d577d667bd1bcb486c0a6b34c218ebb46 Mon Sep 17 00:00:00 2001
From: Jan Hubicka <jh@suse.cz>
Date: Thu, 28 Feb 2002 10:11:01 +0000
Subject: 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
---
 gcc/cfgrtl.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'gcc/cfgrtl.c')

diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c
index 5b99ab2..1b00a61 100644
--- a/gcc/cfgrtl.c
+++ b/gcc/cfgrtl.c
@@ -271,6 +271,7 @@ create_basic_block_structure (index, head, end, bb_note)
   bb->head = head;
   bb->end = end;
   bb->index = index;
+  bb->flags = BB_NEW;
   BASIC_BLOCK (index) = bb;
   if (basic_block_for_insn)
     update_bb_for_insn (bb);
@@ -592,6 +593,7 @@ merge_blocks_nomove (a, b)
   for (e = b->succ; e; e = e->succ_next)
     e->src = a;
   a->succ = b->succ;
+  a->flags |= b->flags;
 
   /* B hasn't quite yet ceased to exist.  Attempt to prevent mishap.  */
   b->pred = b->succ = NULL;
-- 
cgit v1.1