loop.h (struct loop_reg): New.
* loop.h (struct loop_reg): New.
(struct loop_regs): Change to use array of `struct loop_reg'.
* loop.c: Replace assortment of varrays with single regs array.
(count_one_set): Delete may_not_move array argument
and use regs array instead. All caller's changed.
(count_loop_regs_set): Delete may_not_move and single_usage
arguments and use regs array instead. All caller's changed.
(find_single_use_in_loop): Replace usage array argument with pointer
to regs structure. All caller's changed.
(loop_optimize): Delete `moved_once' array.
From-SVN: r38700