ggc-page.c (struct page_entry): Remove varray.h header.
* ggc-page.c (struct page_entry): Remove varray.h header.
Add index_by_depth field.
Remove save_in_use_p field.
(struct globals): Add depth_in_use, depth_max, by_depth_in_use,
by_depth_max, by_depth, and save_in_use fields.
(INITIAL_PTE_COUNT): Add.
(save_in_use_p_i): Add.
(save_in_use_p): Add.
(adjust_depth): Add.
(move_ptes_to_front): Add.
(push_depth): Add.
(push_by_depth): Add.
(prefetch): Add.
(free_page): Add support for and use faster data structures.
(ggc_alloc): Likewise.
(init_ggc): Likewise.
(ggc_recalculate_in_use_p): Likewise.
(ggc_pop_context): Likewise.
(clear_marks): Likewise.
(ggc_pch_read): Likewise.
* Makefile.in (ggc-page.o): Remove varray.h.
From-SVN: r64320