gcc/gcc ChangeLog recog.c simplify-rtx.c

[rth@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2001-12-12 17:21:52

Modified files:
	gcc            : ChangeLog recog.c simplify-rtx.c 

Log message:
	* recog.c (validate_replace_rtx_1): Use simplify_gen_binary
	instead of plus_constant.
	* simplify-rtx.c (neg_const_int): New.
	(simplify_gen_binary, simplify_plus_minus): Use it.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.12285&r2=1.12286
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/recog.c.diff?cvsroot=gcc&r1=1.133&r2=1.134
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/simplify-rtx.c.diff?cvsroot=gcc&r1=1.86&r2=1.87