2006-12-08 Andrew MacLeod <amacleod@redhat.com>
* Makefile.in: Add new file tree-ssa-ter.c.
* tree-outof-ssa.c (struct temp_expr_table_d, new_temp_expr_table,
free_temp_expr_table, add_value_to_version_list,
add_value_to_partition_list, remove_value_from_partition_list,
add_dependence, check_replaceable, finish_expr, mark_replaceable,
kill_expr, kill_virtual_exprs, find_replaceable_in_bb,
find_replaceable_exprs, dump_replaceable_exprs): Move to tree-ssa-ter.c.
* tree-ssa-live.h (find_replaceable_exprs, dump_replaceable_exprs): Add
prototypes.
* tree-ssa-ter.c: New file using code moved from tree-outof-ssa.c.
(struct value_expr_d): Remove.
(struct temp_expr_table_d): Rename fields, add explicit vector of
replaceable expressions instead of sharing. Change value_expr_p's to
bitmap. Delete free_list.
(new_temp_expr_table): Rename fields, count number of ssa_names in
each partition.
(free_temp_expr_table): Rename field, free new fields.
(new_value_expr, free_value_expr, find_value_in_list, add_value_to_list,
add_info_to_list, remove_value_from_list): Delete.
(version_to_be_replaced_p): New. Is an ssa-name replaceable?
(make_dependent_on_partition): New. Set bit in version list, allocating
a bitmap if need be.
(add_to_partition_kill_list): New. Set bit in the partition list,
allocating a bitmap if need be.
(remove_from_partition_kill_list): New. Remove a bit from the
partition list, free the bitmap if it is empty.
(add_dependence): Use renamed field, cleanup. Don't add a dependence
on partitions with only one member.
(is_replaceable_p): New. Split out replaceability check from
check_replaceable.
(process_replaceable): New. Replacement code split from
check_replaceable.
(check_replaceable): Removed.
(finished_with_expr): Renamed from finish_expr.
(kill_expr): Use renamed fields. Less parameters.
(kill_virtual_exprs): Less parameters.
(mark_replaceable): Use renamed fields.
(find_replaceable_in_bb): Use renamed fields, cleanup.
(find_replaceable_exprs): Use renamed routines, cleanup.
(dump_replaceable_exprs): don;t go past end of ssa_names list.
(debug_ter): New. Debug routine to dump state.
From-SVN: r119657
