gcc/gcc ChangeLog regrename.c toplev.c rtl.h d ...

[rth@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2001-12-12 14:50:05

Modified files:
	gcc            : ChangeLog regrename.c toplev.c rtl.h 
	gcc/doc        : invoke.texi 

Log message:
	* regrename.c (copyprop_hardreg_forward): New optimization.
	(kill_value_regno, kill_value, init_value_data, kill_clobbered_value,
	kill_set_value, kill_autoinc_value, copy_value, find_oldest_value_reg,
	replace_oldest_value_reg, replace_oldest_value_addr,
	replace_oldest_value_mem, copyprop_hardreg_forward_1,
	debug_value_data, validate_value_data): New.
	* rtl.h (copyprop_hardreg_forward): Declare.
	* toplev.c (flag_cprop_registers): New.
	(f_options): Add -fcprop-registers
	(rest_of_compilation): Invoke it.
	(parse_options_and_default_flags): Set it at -O1.
	* doc/invoke.texi: Document it.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.12282&r2=1.12283
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/regrename.c.diff?cvsroot=gcc&r1=1.25&r2=1.26
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/toplev.c.diff?cvsroot=gcc&r1=1.554&r2=1.555
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtl.h.diff?cvsroot=gcc&r1=1.318&r2=1.319
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/invoke.texi.diff?cvsroot=gcc&r1=1.88&r2=1.89