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* tree-ssa-loop-ivopts.c (struct cost_pair): Add value field. (find_interesting_uses_cond): Do not use integer_zerop and integer_nonzerop to check for integer constants. (set_use_iv_cost): Record the value field. (determine_use_iv_cost_generic, determine_use_iv_cost_address, determine_use_iv_cost_outer): Set the value field of the cost pair. (may_eliminate_iv): Do not return the comparison code. (iv_elimination_compare): New function. (determine_use_iv_cost_condition): Set the value field. Record noneliminable invariants correctly. (rewrite_use_compare, rewrite_use_outer): Use the value field. From-SVN: r98634
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