gcc/gcc ChangeLog function.c config/mips/mips.md

[kenner@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	kenner@gcc.gnu.org	2003-11-14 17:28:25

Modified files:
	gcc            : ChangeLog function.c 
	gcc/config/mips: mips.md 

Log message:
	PR/6552
	* function.c (struct epi_info): New field const_equiv.
	(update_epilogue_consts): New function.
	(keep_stack_depressed): Clear new field and verify scratch register
	doesn't have it set.
	Call new function via note_stores.
	(handle_epilogue_set): Allow setting SP equiv reg in different mode.
	Allow PLUS where second operand is register known set to constant.
	(emit_equiv_load): Write load using proper mode if source different.
	* config/mips/mips.md (return_internal): Put (return) first.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1753&r2=2.1754
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/function.c.diff?cvsroot=gcc&r1=1.466&r2=1.467
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/mips/mips.md.diff?cvsroot=gcc&r1=1.208&r2=1.209