egcs/gcc ChangeLog gcse.c

[hubicka@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	hubicka@sourceware.cygnus.com	99/12/17 03:10:59

Modified files:
	gcc            : ChangeLog gcse.c 

Log message:
	* gcse.c (try_replace_reg): Do replacements in REG_EQUAL/REG_EQUIV
	notes too, create one when replacement failed, attempt to simplify
	resulting notes.
	(cprop_insn): Propagate even to registers mentioned only in REG_EQUAL
	or REG_EQUIV notes.