egcs/gcc ChangeLog basic-block.h combine.c flo ...

[hubicka at gcc dot gnu dot org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	hubicka@gcc.gnu.org	2001-07-23 07:08:13

Modified files:
	gcc            : ChangeLog basic-block.h combine.c flow.c gcse.c 
	                 recog.c rtl.h rtlanal.c toplev.c 

Log message:
	* basic-block.h (find_sub_basic_block): Declare.
	* flow.c (make_edges): New arguments MIN and MAX;
	(find_sub_basic_blocks): Revamp to use make_edges
	and purge_dead_edges.
	(find_basic_blocks): Update call of find_sub_basic_block.
	
	* recog.c (split_all_insns): Always expect CFG to be consistent;
	call find_sub_basic_blocks in case something has changed.
	* toplev.c (rest_of_compilation): Always call split_all_insns once CFG
	has been built.
	
	* basic-block.h (delete_noop_moves): Declare.
	* combine.c (combine_instructions): Call it.
	(recog_for_combine): Tolerate noop moves
	(distribute_notes): Force refresh when register dies at noop move.
	* flow.c (delete_noop_moves): Use BB structure; delete JUMP insns
	too.
	(life_analysis): Update delete_noop_moves call.
	(set_noop_p): Move too ...
	* rtlanal.c (noop_move_p): ... here.
	* rtl.h (noop_move_p): Declare.
	
	* basic-block.h (purge_all_dead_edges, purge_dead_edges): New functions.
	* toplev.c (rest_of_compilation): Conditionally call purge_all_dead_edges
	after combine.
	* gcse.c (cprop_cc0_jump, cprop_insn): New argument "basic_block".
	(cprop_jump): Likewise; call purge_dead_edges if substitution suceeded.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.10755&r2=1.10756
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/basic-block.h.diff?cvsroot=gcc&r1=1.103&r2=1.104
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/combine.c.diff?cvsroot=gcc&r1=1.219&r2=1.220
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/flow.c.diff?cvsroot=gcc&r1=1.434&r2=1.435
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/gcse.c.diff?cvsroot=gcc&r1=1.138&r2=1.139
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/recog.c.diff?cvsroot=gcc&r1=1.114&r2=1.115
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/rtl.h.diff?cvsroot=gcc&r1=1.276&r2=1.277
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/rtlanal.c.diff?cvsroot=gcc&r1=1.101&r2=1.102
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/toplev.c.diff?cvsroot=gcc&r1=1.495&r2=1.496