gcc/gcc ChangeLog combine.c cse.c cselib.c df. ...

[steven@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	steven@gcc.gnu.org	2005-01-05 23:19:25

Modified files:
	gcc            : ChangeLog combine.c cse.c cselib.c df.c flow.c 
	                 gcse.c loop.c postreload-gcse.c postreload.c 
	                 reload.c resource.c rtl.def rtlanal.c 
	                 sched-deps.c sched-rgn.c 
	gcc/config/i860: i860.c 
	gcc/doc        : rtl.texi 

Log message:
	* combine.c (expand_compound_operation)  <ZERO_EXTRACT>: Add
	comment that we fall through after case.
	(mark_used_regs_combine): Don't expect a SIGN_EXTRACT in a SET_DEST.
	(distribute_links): Likewise.
	* cse.c (cse_insn): Likewise.
	* cselib.c (cselib_invalidate_mem): Likewise.
	* df.c: Update comments at the top of the file.
	(read_modify_subreg_p): Update comments here too.
	(df_def_record_1): Don't expect a SIGN_EXTRACT in a SET_DEST.
	* flow.c (mark_set_1): Likewise.
	(mark_used_regs): Likewise.
	* gcse.c (mems_conflict_for_gcse_p): Likewise.
	(canon_list_insert): Likewise.
	(mark_set): Likewise.
	(try_replace_reg): Likewise.
	(store_killed_in_insn): Likewise.
	* loop.c (count_one_set): Likewise.
	(basic_induction_var): Likewise.
	* postreload-gcse.c (find_mem_conflicts): Likewise.
	* postreload.c (reload_combine_note_store): Likewise.
	(move2add_note_store): Likewise.
	* reload.c (find_equiv_reg): Likewise.
	(mark_referenced_resources): Likewise.
	* rtlanal.c (set_noop_p): Likewise.
	(note_stores): Likewise.
	(note_uses): Likewise.
	* sched-deps.c (sched_analyze_1): Likewise.
	* sched-rgn.c (check_live_1): Likewise.
	(update_live_1): Likewise.
	* config/i860/i860.c: Likewise.
	
	* rtl.dec (SIGN_EXTRACT): Document that this cannot appear as
	an lvalue.
	(ZERO_EXTRACT): Mention that this one can be an lvalue.
	
	* doc/rtl.texi: Update documentation for bit-fields and SET.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7041&r2=2.7042
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&r1=1.465&r2=1.466
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cse.c.diff?cvsroot=gcc&r1=1.328&r2=1.329
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cselib.c.diff?cvsroot=gcc&r1=1.55&r2=1.56
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/df.c.diff?cvsroot=gcc&r1=1.79&r2=1.80
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flow.c.diff?cvsroot=gcc&r1=1.611&r2=1.612
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/gcse.c.diff?cvsroot=gcc&r1=1.325&r2=1.326
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop.c.diff?cvsroot=gcc&r1=1.519&r2=1.520
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/postreload-gcse.c.diff?cvsroot=gcc&r1=2.7&r2=2.8
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/postreload.c.diff?cvsroot=gcc&r1=2.24&r2=2.25
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/reload.c.diff?cvsroot=gcc&r1=1.263&r2=1.264
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/resource.c.diff?cvsroot=gcc&r1=1.76&r2=1.77
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtl.def.diff?cvsroot=gcc&r1=1.96&r2=1.97
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtlanal.c.diff?cvsroot=gcc&r1=1.206&r2=1.207
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/sched-deps.c.diff?cvsroot=gcc&r1=1.88&r2=1.89
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/sched-rgn.c.diff?cvsroot=gcc&r1=1.88&r2=1.89
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i860/i860.c.diff?cvsroot=gcc&r1=1.48&r2=1.49
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/rtl.texi.diff?cvsroot=gcc&r1=1.78&r2=1.79