gcc/gcc ChangeLog fold-const.c

[sayle@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2004-03-23 19:11:37

Modified files:
	gcc            : ChangeLog fold-const.c 

Log message:
	* fold-const.c (tree_expr_nonnegative_p): A&B is nonnegative when
	A is nonnegative or B is nonnegative.  Similarly A|B is nonnegative
	when both A and B are nonnegative.
	(tree_expr_nonzero_p): A|B is nonzero when A is nonzero or B is
	nonzero.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.3265&r2=2.3266
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&r1=1.357&r2=1.358