egcs/gcc ChangeLog fold-const.c

[kenner@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	kenner@sourceware.cygnus.com	99/11/29 14:56:39

Modified files:
	gcc            : ChangeLog fold-const.c 

Log message:
	* fold-const.c (extract_muldiv, case {MIN,MAX}_EXPR): Reverse
	operation if C is negative.
	(extract_muldiv, case SAVE_EXPR): Supresss if arg has side effects.
	(extract_muldiv, case {PLUS,MINUS}_EXPR): Don't apply distributive
	law for some divisions if constant is negative and change other
	divisions to the opposite rounding.