1/* Definitions for branch prediction routines in the GNU compiler. 2 Copyright (C) 2001, 2003, 2004, 2007, 2008, 2010 3 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING3. If not see 19<http://www.gnu.org/licenses/>. */ 20 21#ifndef GCC_PREDICT_H 22#define GCC_PREDICT_H 23 24#define DEF_PREDICTOR(ENUM, NAME, HITRATE, FLAGS) ENUM, 25enum br_predictor 26{ 27#include "predict.def" 28 29 /* Upper bound on non-language-specific builtins. */ 30 END_PREDICTORS 31}; 32#undef DEF_PREDICTOR 33enum prediction 34{ 35 NOT_TAKEN, 36 TAKEN 37}; 38 39extern void predict_insn_def (rtx, enum br_predictor, enum prediction); 40extern int counts_to_freqs (void); 41extern void estimate_bb_frequencies (void); 42extern const char *predictor_name (enum br_predictor); 43extern tree build_predict_expr (enum br_predictor, enum prediction); 44extern void tree_estimate_probability (void); 45extern void compute_function_frequency (void); 46extern void rebuild_frequencies (void); 47 48#endif /* GCC_PREDICT_H */ 49