Merge branch 'master' of ssh://crater.dragonflybsd.org/repository/git/dragonfly
[dragonfly.git] / contrib / gcc-3.4 / gcc / predict.h
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1/* Definitions for branch prediction routines in the GNU compiler.
2 Copyright (C) 2001, 2003 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 2, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING. If not, write to the Free
18Software Foundation, 59 Temple Place - Suite 330, Boston, MA
1902111-1307, USA. */
20
21#define DEF_PREDICTOR(ENUM, NAME, HITRATE, FLAGS) ENUM,
22enum br_predictor
23{
24#include "predict.def"
25
26 /* Upper bound on non-language-specific builtins. */
27 END_PREDICTORS
28};
29#undef DEF_PREDICTOR
30enum prediction
31{
32 NOT_TAKEN,
33 TAKEN
34};
35
36/* Flags for NOTE_PREDICTION */
37#define IS_TAKEN 1 /* Predict edges to the block as taken. */
38
39extern void predict_insn_def (rtx, enum br_predictor, enum prediction);
40extern void predict_insn (rtx, enum br_predictor, int);
41
42/* Avoid unneeded dependency on basic_block.h. */
43#ifdef BASIC_BLOCK
44extern void predict_edge (edge, enum br_predictor, int);
45extern void predict_edge_def (edge, enum br_predictor, enum prediction);
46#endif