PR opt/10087

	* gcc.dg/20030324-1.c: New test.

	PR opt/10087
	* loop.c (loop_givs_reduce): Skip bivs with duplicate locations
	while incrementing giv.
	(record_biv): Check for duplicate biv locations and
	set (struct induction *) v->same if found.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@64928 138bc75d-0d04-0410-961f-82ee72b054a4