egcs/gcc ChangeLog basic-block.h emit-rtl.c fl ...

[hubicka@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	hubicka@gcc.gnu.org	2001-07-22 14:42:35

Modified files:
	gcc            : ChangeLog basic-block.h emit-rtl.c flow.c 
	                 ifcvt.c rtl.h 
	gcc/config/i386: i386.c 
	gcc/doc        : md.texi 

Log message:
	* basic-block.h (redirect_edge_and_branch_force,
	redirect_edge_and_branch, block_label, forwarder_block_p): Declare.
	* flow.c (redirect_edge_and_branch_force,
	redirect_edge_and_branch, block_label, forwarder_block_p): Make global.
	(redirect_edge_and_branch_force): Fix copying of lifeness information.
	(block_label): Handle EXIT_BLOCK_PTR by returning NULL.
	* ifcvt.c (dead_or_predictable): Take BB as an new destionation
	instead of label; update CFG after transformation.
	(find_if_case_1): Update call, use redirect_edge_and_branch_force
	for finishing the transformation; handle even case where ELSE
	does not follow THEN.
	(find_if_case_2): Update call of dead_or_predictable; simplify
	CFG update.
	
	* emit-rtl.c (split_branch_probability): New global variable.
	(try_split): Take care to set split_branch_probability and
	create REG_BR_PROB note for new jump insns.
	* md.texi (define_split): Document new feature.
	
	* i386.c (ix86_split_fp_branch): Redistribute branch probability notes.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.10749&r2=1.10750
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/basic-block.h.diff?cvsroot=gcc&r1=1.102&r2=1.103
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/emit-rtl.c.diff?cvsroot=gcc&r1=1.194&r2=1.195
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/flow.c.diff?cvsroot=gcc&r1=1.431&r2=1.432
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ifcvt.c.diff?cvsroot=gcc&r1=1.57&r2=1.58
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/rtl.h.diff?cvsroot=gcc&r1=1.275&r2=1.276
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/config/i386/i386.c.diff?cvsroot=gcc&r1=1.287&r2=1.288
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/doc/md.texi.diff?cvsroot=gcc&r1=1.16&r2=1.17