2009-05-08 Paolo Bonzini <bonzini@gnu.org>

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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@147270 138bc75d-0d04-0410-961f-82ee72b054a4