re PR tree-optimization/90240 (ICE in try_improve_iv_set, at tree-ssa-loop-ivopts.c:6694)
PR tree-optimization/90240 * tree-ssa-loop-ivopts.c (get_scaled_computation_cost_at): Scale cost with respect to scaling factor pre-computed for each basic block. (try_improve_iv_set): Return bool if best_cost equals to iv_ca cost. (find_optimal_iv_set_1): Free iv_ca set if it has infinite_cost. (COST_SCALING_FACTOR_BOUND, determine_scaling_factor): New. (tree_ssa_iv_optimize_loop): Call determine_scaling_factor. Extend live range for array of loop's basic blocks. Cleanup aux field of loop's basic blocks. gcc/testsuite * gfortran.dg/graphite/pr90240.f: New test. From-SVN: r271007
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gcc/testsuite/gfortran.dg/graphite/pr90240.f
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