* loop.c (check_insn_for_bivs, for_every_insn_in_loop,

	check_insn_for_givs): Break out from ...
	(strength_reduce) ... here; use for_every_insn_in_loop to call
	check_insn_for_givs.
	* loop.h (for_every_insn_in_loop): Declare.
	(loop_insn_callback): New type.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33250 138bc75d-0d04-0410-961f-82ee72b054a4