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 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along 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, 25 enum br_predictor 26 { 27 #include "predict.def" 28 29 /* Upper bound on non-language-specific builtins. */ 30 END_PREDICTORS 31 }; 32 #undef DEF_PREDICTOR 33 enum prediction 34 { 35 NOT_TAKEN, 36 TAKEN 37 }; 38 39 extern void predict_insn_def (rtx, enum br_predictor, enum prediction); 40 extern int counts_to_freqs (void); 41 extern void estimate_bb_frequencies (void); 42 extern const char *predictor_name (enum br_predictor); 43 extern tree build_predict_expr (enum br_predictor, enum prediction); 44 extern void tree_estimate_probability (void); 45 extern void compute_function_frequency (void); 46 extern void rebuild_frequencies (void); 47 48 #endif /* GCC_PREDICT_H */ 49
