2008-11-15 Vladimir Makarov <vmakarov@redhat.com>
PR bootstrap/37790
* ira-int.h (ira_copy_allocno_live_range_list,
ira_merge_allocno_live_ranges,
ira_allocno_live_ranges_intersect_p,
ira_finish_allocno_live_range_list): New prototypes.
(ira_allocno_live_ranges_intersect_p,
ira_pseudo_live_ranges_intersect_p): Remove.
* ira-conflicts.c (ira_allocno_live_ranges_intersect_p,
ira_pseudo_live_ranges_intersect_p): Rename to
allocnos_have_intersected_live_ranges_p and
pseudos_have_intersected_live_ranges_p. Move them from here to
...
* ira-color.c: ... here
(coalesced_allocno_conflict_p): Use
allocnos_have_intersected_live_ranges_p.
(coalesced_allocnos_living_at_program_points,
coalesced_allocnos_live_at_points_p,
set_coalesced_allocnos_live_points): Remove.
(slot_coalesced_allocnos_live_ranges,
slot_coalesced_allocno_live_ranges_intersect_p,
setup_slot_coalesced_allocno_live_ranges): New.
(coalesce_spill_slots): Use ranges of coalesced allocnos.
(ira_sort_regnos_for_alter_reg): Use
allocnos_have_intersected_live_ranges_p.
(ira_reuse_stack_slot): Use
pseudos_have_intersected_live_ranges_p.
* global.c (pseudo_for_reload_consideration_p): Check
flag_ira_share_spill_slots too.
* ira-build.c (copy_allocno_live_range_list): Rename to
ira_copy_allocno_live_range_list. Make it external.
(merge_ranges): Rename to ira_merge_allocno_live_ranges. Make it
external.
(ira_allocno_live_ranges_intersect_p): New.
(ira_finish_allocno_live_range_list): New.
(finish_allocno): Use it.
(remove_unnecessary_allocnos): Use ira_merge_allocno_live_ranges.
(copy_info_to_removed_store_destinations): Ditto. Use
ira_copy_allocno_live_range_list.
(ira_flattening): Use ira_merge_allocno_live_ranges.
* ira.c (too_high_register_pressure_p): New function.
(ira): Switch off sharing spill slots if the pressure is too high.
From-SVN: r142017
