gcc/gcc ChangeLog.lno cfghooks.c tree-flow-inl ...

[rakdver@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	lno-branch
Changes by:	rakdver@gcc.gnu.org	2004-03-27 18:29:36

Modified files:
	gcc            : ChangeLog.lno cfghooks.c tree-flow-inline.h 
	                 tree-flow.h tree-into-ssa.c 
	                 tree-scalar-evolution.c tree-ssa-dce.c 
	                 tree-ssa-loop-im.c tree-ssa-loop-ivopts.c 
	                 tree-ssa-loop-manip.c tree-ssa-loop.c 

Log message:
	* cfghooks.c (split_edge): Update IRREDUCIBLE_LOOP flags.
	* tree-flow-inline.h (bsi_after_labels): New.
	* tree-flow.h (struct ssa_name_ann_d): Add need_phi_state field.
	(bsi_after_labels, rewrite_ssa_into_ssa, duplicate_ssa_name,
	tree_ssa_dce_no_cfg_changes, rewrite_into_loop_closed_ssa,
	verify_loop_closed_ssa, compute_phi_arg_on_exit): Declare.
	(tree_loop_optimizer_init): Declaration changed.
	* tree-into-ssa.c (struct mark_def_sites_global_data): Add
	names_to_rename and ssa_names fields.
	(insert_phi_nodes, get_value_for, set_value_for, set_def_block,
	set_livein_block, insert_phi_nodes_1, insert_phi_nodes_for,
	register_new_def, get_reaching_def, rewrite_into_ssa): Handle
	rewriting of ssa names.
	(get_phi_state, set_phi_state, ssa_mark_def_sites_initialize_block,
	ssa_mark_phi_uses, ssa_mark_def_sites, duplicate_ssa_name,
	ssa_rewrite_initialize_block, ssa_rewrite_phi_arguments,
	ssa_rewrite_finalize_block, ssa_rewrite_stmt, rewrite_ssa_into_ssa):
	New functions.
	* tree-scalar-evolution.c (scev_initialize): Changed due to
	tree_loop_optimizer_init change.
	* tree-ssa-dce.c (perform_tree_ssa_dce, perform_tree_ssa_dce,
	tree_ssa_cd_dce): Handle no cfg changes mode.
	(tree_ssa_dce_no_cfg_changes): Resurrect.
	* tree-ssa-loop-im.c (move_computations): Preserve loop closed ssa.
	* tree-ssa-loop-ivopts.c (struct version_info): Field outermost_usage
	removed.
	(update_outermost_usage, find_outermost_usage): Removed.
	(ip_normal_pos): Fix.
	(tree_ssa_iv_optimize_init): Do not call find_outermost_usage.
	(find_interesting_uses_stmt): Use loop closed ssa form.
	(find_interesting_uses_outside): New.
	(find_interesting_uses): Use it.
	(determine_iv_cost): Prefer IP_NORMAL to IP_END.
	(split_loop_exit_edge, protect_loop_closed_ssa_form_use,
	protect_loop_closed_ssa_form, compute_phi_arg_on_exit): New functions.
	(rewrite_use_outer): Preserve loop closed ssa form.
	(tree_ssa_iv_optimize): Verify loop closed ssa form.
	* tree-ssa-loop-manip.c (mfb_redirect_exit_edges): Removed.
	(free_new_names): Free old ssa names.
	(extend_exit_phi_nodes, add_exit_phis_edge,
	add_exit_phis_use, add_exit_phis_stmt, add_exit_phis,
	get_loops_exits, rewrite_into_loop_closed_ssa,
	check_loop_closed_ssa_use, check_loop_closed_ssa_stmt,
	verify_loop_closed_ssa): New functions.
	(tree_duplicate_loop_to_header_edge): Use loop closed ssa form.
	(tree_ssa_loop_version): Handle irreducible loops correctly.
	* tree-ssa-loop.c (tree_loop_optimizer_init): Create loop closed ssa
	form.
	(tree_ssa_loop_opt, copy_loop_headers): Changed due to
	tree_loop_optimizer_init change.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.lno.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.104&r2=1.1.2.105
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cfghooks.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.4.2.6&r2=1.1.2.4.2.7
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow-inline.h.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.64.2.6&r2=1.1.2.64.2.7
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow.h.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.4.177.2.20&r2=1.1.4.177.2.21
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-into-ssa.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.4.1&r2=1.1.4.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-scalar-evolution.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.24&r2=1.1.2.25
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-dce.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.72.2.5&r2=1.1.2.72.2.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-im.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.10&r2=1.1.2.11
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-ivopts.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.19&r2=1.1.2.20
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-manip.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.6&r2=1.1.2.7
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop.c.diff?cvsroot=gcc&only_with_tag=lno-branch&r1=1.1.2.3.2.16&r2=1.1.2.3.2.17