xref: /openbsd-src/gnu/usr.bin/gcc/gcc/predict.h (revision c87b03e512fc05ed6e0222f6fb0ae86264b1d05b)
1 /* This file contains the definitions and documentation for the
2    builtins used in the GNU compiler.
3    Copyright (C) 2001 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 2, 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 COPYING.  If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20 02111-1307, USA.  */
21 
22 #define DEF_PREDICTOR(ENUM, NAME, HITRATE, FLAGS) ENUM,
23 enum br_predictor
24 {
25 #include "predict.def"
26 
27   /* Upper bound on non-language-specific builtins.  */
28   END_PREDICTORS
29 };
30 #undef DEF_PREDICTOR
31 enum prediction
32 {
33    NOT_TAKEN,
34    TAKEN
35 };
36 
37 /* Flags for NOTE_PREDICTION */
38 #define IS_TAKEN 1		/* Predict edges to the block as taken.  */
39 
40 extern void predict_insn_def	PARAMS ((rtx, enum br_predictor,
41 					 enum prediction));
42 extern void predict_insn	PARAMS ((rtx, enum br_predictor, int));
43 
44 /* Avoid unneeded dependency on basic_block.h  */
45 #ifdef BASIC_BLOCK
46 extern void predict_edge	PARAMS ((edge, enum br_predictor, int));
47 extern void predict_edge_def	PARAMS ((edge, enum br_predictor,
48 					 enum prediction));
49 #endif
50