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PR tree-optimization/56490 * params.def (PARAM_UNINIT_CONTROL_DEP_ATTEMPTS): New param. * tree-ssa-uninit.c: Include params.h. (compute_control_dep_chain): Add num_calls argument, return false if it exceed PARAM_UNINIT_CONTROL_DEP_ATTEMPTS param, pass num_calls to recursive call. (find_predicates): Change dep_chain into normal array, cur_chain into auto_vec<edge, MAX_CHAIN_LEN + 1>, add num_calls variable and adjust compute_control_dep_chain caller. (find_def_preds): Likewise. From-SVN: r207988
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