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PR target/34711 * tree-ssa-loop-ivopts.c (comp_cost): New type. (zero_cost, infinite_cost): New constants. (struct cost_pair): Change type of cost to comp_cost. (struct iv_ca): Change type of cand_use_cost and cost to comp_cost. (new_cost, add_costs, sub_costs, compare_costs, infinite_cost_p): New functions. (set_use_iv_cost, force_expr_to_var_cost, force_var_cost, split_address_cost, ptr_difference_cost, difference_cost, get_computation_cost_at, get_computation_cost, determine_use_iv_cost_generic, determine_use_iv_cost_address, determine_use_iv_cost_condition, determine_use_iv_costs, cheaper_cost_pair, iv_ca_recount_cost, iv_ca_set_no_cp, iv_ca_set_cp, iv_ca_cost, iv_ca_new, iv_ca_dump, iv_ca_extend, iv_ca_narrow, iv_ca_prune, try_improve_iv_set, find_optimal_iv_set): Change type of cost to comp_cost. (determine_iv_cost): Increase cost of non-original ivs, instead of decreasing the cost of original ones. (get_address_cost): Indicate the complexity of the addressing mode in comp_cost. (try_add_cand_for): Prefer using ivs not specific to some object. * tree-flow.h (force_expr_to_var_cost): Declaration removed. From-SVN: r131877
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