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