gcc/predict.h

   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 extern void tree_estimate_probability (void);
  44 extern void compute_function_frequency (void);
  45
  46 #endif  /* GCC_PREDICT_H */