* gcse.c (struct null_pointer_info): New type.

	(get_bitmap_width): New function.
	(current_block): Remove.
	(nonnull_local): Likewise.
	(nonnull_killed): Likewise.
	(invalidate_nonnull_info): Take a null_pointer_info as input.
	(delete_null_pointer_checks_1): New function.
	(delete_null_pointer_checks): Use it.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30384 138bc75d-0d04-0410-961f-82ee72b054a4