* Makefile.in (cfg.o): Add new dependencies.
* basic-block.h (reorder_block_def): Kill
original/copy/duplicated/copy_number fields.
(BB_DUPLICATED): New flag.
(initialize_original_copy_tables, free_original_copy_tables,
set_bb_original, get_bb_original, set_bb_copy, get_bb_copy): New.
* cfg.c: Include hashtab.h and alloc-pool.h
(bb_original, bb_copy, original_copy_bb_pool): New static vars.
(htab_bb_copy_original_entry): New struct.
(bb_copy_original_hash, bb_copy_original_eq): New static functions.
(initialize_original_copy_tables, free_original_copy_tables,
set_bb_original, get_bb_original, set_bb_copy, get_bb_copy): New
global functions.
* cfghooks.c (duplicate_block): Update original/copy handling.
* cfglayout.c (fixup_reorder_chain): Likewise.
(cfg_layout_initialize): Initialize orignal_copy tables.
(cfg_layout_finalize): FInalize original_copy tables.
(can_copy_bbs_p): Use BB_DUPLICATED flag.
(copy_bbs): Likewise.
* cfgloopmanip.c (update-single_exits_after_duplication): Likewise.
(duplicate_loop_to_header_edge): Likewise; update handling of
copy_number.
(loop_version): Likewise.
* dominance.c (get_dominated_by_region): Use BB_DUPLICATED_FLAG.
* except.c (expand_resx_expr): Check that reg->resume is not set.
* loop-unroll.c (unroll_loop_constant_iterations,
unroll_loop_runtime_iterations, apply_opt_in_copies): Update
copy/original handling.
* loop-unwitch.c (unswitch_loop): Likewise.
* tree-cfg.c (create_bb): Do not initialize RBI.
(disband_implicit_edges): Do not kill RBI.
(add_phi_args_after_copy_bb): Use new original/copy mapping.
(add_phi_args_after_copy): Use BB_DUPLICATED flag.
(tree_duplicate_sese_region): Update original/copy handling.
* tree-ssa-loop-ivcanon.c (try_unroll_loop_completely): Likewise.
* tree-ssa-loop-manip.c (copy_phi_node_args): Likewise.
* tree-ssa-loop-unswitch.c (tree_unswitch_single_loop): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@101000
138bc75d-0d04-0410-961f-
82ee72b054a4