c59dabbe46
PR tree-optimization/23942 * Makefile.in (SCEV_H): Depends on PARAMS_H. * tree-scalar-evolution.c: Include params.h. (t_bool): New enum. (follow_ssa_edge, follow_ssa_edge_in_rhs, follow_ssa_edge_in_condition_phi_branch, follow_ssa_edge_in_condition_phi, follow_ssa_edge_inner_loop_phi): Change return type to t_bool. Use a parameter to limit the size of trees that are walked before stopping (analyze_evolution_in_loop): Initialize the limit to 0. (follow_ssa_edge): Give up by returning t_dont_know if the limit exceeds PARAM_SCEV_MAX_EXPR_SIZE. From-SVN: r104653
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