gcc/gcc ChangeLog reg-stack.c

[sayle@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	sayle@gcc.gnu.org	2005-05-29 15:37:45

Modified files:
	gcc            : ChangeLog reg-stack.c 

Log message:
	* reg-stack.c (propagate_stack): Always copy the source stack to
	the destination.  This routine is now only called when this is safe.
	(better_edge): New function split out from convert_regs_1 to
	determine which of two edges is better to propagate across.
	(convert_regs_1):  We need only search for a best edge if the
	stack layout hasn't been defined yet.  Use better_edge to help
	find beste.  No longer traverse unnecessary edges.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8938&r2=2.8939
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/reg-stack.c.diff?cvsroot=gcc&r1=1.180&r2=1.181