* ggc-page.c (struct page_entry): Remove save_num_free_objects.

	(DIV_ROUND_UP): Robustify.
	(ggc_recalculate_in_use_p): New function.
	(release_pages): Don't inline it.
	(ggc_alloc_obj): Don't refuse to allocate objects on pages for
	outer contexts.
	(ggc_pop_context): Use ggc_recalculate_in_use_p.
	(clear_marks): Always save in_use_p.
	(sweep_pages): Use ggc_recalculate_in_use_p.
	(ggc_page_print_statistics): Avoid signed/unsigned comparisons.
	Release pages before counting statistics.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30314 138bc75d-0d04-0410-961f-82ee72b054a4