2009-05-08 Paolo Bonzini <bonzini@gnu.org>
PR rtl-optimization/33928
* loop-invariant.c (struct use): Add addr_use_p.
(struct def): Add n_addr_uses.
(struct invariant): Add cheap_address.
(create_new_invariant): Set cheap_address.
(record_use): Accept df_ref. Set addr_use_p and update n_addr_uses.
(record_uses): Pass df_ref to record_use.
(get_inv_cost): Do not add inv->cost to comp_cost for cheap addresses used
only as such.
From-SVN: r147270
