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/* This file contains the definitions and documentation for the
builtins used in the GNU compiler.
Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Before including this file, you should define a macro:
DEF_PREDICTOR (ENUM, NAME, HITRATE)
This macro will be called once for each predictor. The ENUM will
be of type `enum predictor', and will enumerate all supported
predictors. The order of DEF_PREDICTOR calls is important, as
in the first match combining heuristics, the predictor appearing
first in this file will win.
NAME is used in the debugging output to determine predictor type.
HITRATE is the probability that edge predicted by predictor as taken
will be really taken (so it should be always above
REG_BR_PROB_BASE / 2). */
DEF_PREDICTOR (PRED_FIRST_MATCH, "first match", PROB_ALWAYS)
DEF_PREDICTOR (PRED_UNCONDITIONAL, "unconditional jump", PROB_ALWAYS)
DEF_PREDICTOR (PRED_LOOP_ITERATIONS, "loop iterations", PROB_ALWAYS)
DEF_PREDICTOR (PRED_BUILTIN_EXPECT, "__builtin_expect", PROB_VERY_LIKELY)
DEF_PREDICTOR (PRED_NORETURN, "noreturn call", PROB_ALWAYS)
DEF_PREDICTOR (PRED_LOOP_BRANCH, "loop branch", PROB_VERY_LIKELY)
DEF_PREDICTOR (PRED_LOOP_EXIT, "loop exit", PROB_LIKELY)
DEF_PREDICTOR (PRED_LOOP_HEADER, "loop header", PROB_LIKELY)
DEF_PREDICTOR (PRED_POINTER, "pointer", PROB_LIKELY)
DEF_PREDICTOR (PRED_OPCODE, "opcode", PROB_LIKELY)
DEF_PREDICTOR (PRED_CALL, "call", PROB_LIKELY)
DEF_PREDICTOR (PRED_ERROR_RETURN, "error return", PROB_LIKELY)
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