egcs/gcc ChangeLog.RA ra.c

[matz@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Branch: 	new-regalloc-branch
Changes by:	matz@gcc.gnu.org	2001-07-17 12:32:49

Modified files:
	gcc            : ChangeLog.RA ra.c 

Log message:
	2001-07-07  Michael Matz <matzmich@cs.tu-berlin.de>
	
	Remove some #if 0 code.  copy_insn_p() also return true if subregs
	are involved in the copy insn; used for avoiding conflicts of these
	parts.  Those insns are not recorded for coalescing (change in
	remember_move()).  This relaxes the conflict graph even further.
	
	* ra.c : (copy_insn_p): Subregs in move insns don't prevent them
	from being copy insns.
	(remember_move): Only add REG-REG moves into coalesce list.
	(live_out_1): Use subreg copies to limit conflicts made for copy
	insns.
	Kill some #if 0 code.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.RA.diff?cvsroot=gcc&only_with_tag=new-regalloc-branch&r1=1.1.2.30&r2=1.1.2.31
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ra.c.diff?cvsroot=gcc&only_with_tag=new-regalloc-branch&r1=1.1.2.16&r2=1.1.2.17