gcc/gcc ChangeLog.killloop Makefile.in cfgloop ...

[rakdver at gcc dot gnu dot org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	killloop-branch
Changes by:	rakdver@gcc.gnu.org	2005-08-30 09:31:53

Modified files:
	gcc            : ChangeLog.killloop Makefile.in cfgloop.h df.c 
	                 loop-iv.c loop-unroll.c loop-unswitch.c 
	                 rtlanal.c 

Log message:
	* rtlanal.c (may_trap_p): Handle PREFETCH.
	* loop-unroll.c (struct opt_info): Add refetches_to_remove field.
	(analyze_prefetch_to_remove, remove_redundant_prefetch): New functions.
	(analyze_insns_in_loop): Call analyze_prefetch_to_remove.
	(apply_opt_in_copies): Call remove_redundant_prefetch.
	(free_opt_info): Free prefetches_to_remove field.
	
	* cfgloop.h (struct rtx_iv): Remove analysed field.  Added biv_p field.
	(iv_get_reaching_def): Removed.
	(iv_analyze_result, iv_analyze_expr): Declare.
	& df.c (df_bitmaps_free, df_bb_modify): Only work on the specified part
	of cfg.
	(df_find_use): Handle subregs.
	* Makefile.in (loop-iv.o): Add DF_H dependency.
	* loop-iv.c: Include df.h.
	(enum iv_grd_result): New enum.
	(DF_REF_IV, DF_REF_IV_SET): New macros.
	(df): New global variable.
	(struct insn_info, insn_info, last_def, bivs, max_insn_no, max_reg_no,
	assign_luids, mark_sets, kill_sets, mark_single_set, simple_set_p):
	Removed.
	(clear_iv_info, latch_dominating_def, record_iv, iv_analyze_expr,
	iv_analyze_result, iv_analyze_def): New functions.
	(iv_analysis_loop_init, iv_get_reaching_def, simple_reg_p,
	get_biv_step_1, get_biv_step, iv_analyze_biv, iv_analyze_op,
	iv_analyze, biv_p, iv_analysis_done): Work with df representation of
	UD chains.
	(iv_constant, iv_subreg, iv_extend, iv_mult, iv_shift): Initialize
	biv_p, do not set analysed.
	(iv_number_of_iterations): Use new interface to iv analysis.
	* loop-unroll.c (analyze_iv_to_split_insn): Ditto.
	* loop-unswitch.c (may_unswitch_on): Ditto.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.killloop.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=1.1.2.4&r2=1.1.2.5
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/Makefile.in.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=1.1530.2.1&r2=1.1530.2.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfgloop.h.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=1.48&r2=1.48.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/df.c.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=1.86.2.1&r2=1.86.2.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-iv.c.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=2.35&r2=2.35.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-unroll.c.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=1.36&r2=1.36.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop-unswitch.c.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=1.32&r2=1.32.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtlanal.c.diff?cvsroot=gcc&only_with_tag=killloop-branch&r1=1.218&r2=1.218.2.1