gcc/predict.h

   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 */