egcs/gcc ChangeLog expr.c tree.c

[kenner@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	kenner@sourceware.cygnus.com	2000-10-20 13:57:21

Modified files:
	gcc            : ChangeLog expr.c tree.c 

Log message:
	* expr.c (expand_expr, case SAVE_EXPR): Set RTX_UNCHANGING_P on
	returned MEM.
	(expand_expr_unaligned, case ARRAY_REF): Check that index is
	a constant before comparing it; use tree_low_cst.
	* tree.c (save_expr): Set TREE_READONLY.
	(substitute_expr): Return inside of NON_LVALUE_EXPR.
	(build, build1): Set TREE_READONLY if all operands are.
	(build_index_type): If upper bound is a negative number, lower
	bound is zero and sizetype is unsigned, use upper bound of one and
	lower of zero.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.8035&r2=1.8036
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/expr.c.diff?cvsroot=gcc&r1=1.269&r2=1.270
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/tree.c.diff?cvsroot=gcc&r1=1.164&r2=1.165