92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
|
/* Gimple prediction routines.
|
||
|
|
|
||
|
|
Copyright (C) 2007-2023 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
This file is part of GCC.
|
||
|
|
|
||
|
|
GCC 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 3, or (at your option) any later
|
||
|
|
version.
|
||
|
|
|
||
|
|
GCC 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 GCC; see the file COPYING3. If not see
|
||
|
|
<http://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#ifndef GCC_GIMPLE_PREDICT_H
|
||
|
|
#define GCC_GIMPLE_PREDICT_H
|
||
|
|
|
||
|
|
#include "predict.h"
|
||
|
|
|
||
|
|
/* Return the predictor of GIMPLE_PREDICT statement GS. */
|
||
|
|
|
||
|
|
inline enum br_predictor
|
||
|
|
gimple_predict_predictor (const gimple *gs)
|
||
|
|
{
|
||
|
|
GIMPLE_CHECK (gs, GIMPLE_PREDICT);
|
||
|
|
return (enum br_predictor) (gs->subcode & ~GF_PREDICT_TAKEN);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Set the predictor of GIMPLE_PREDICT statement GS to PREDICT. */
|
||
|
|
|
||
|
|
inline void
|
||
|
|
gimple_predict_set_predictor (gimple *gs, enum br_predictor predictor)
|
||
|
|
{
|
||
|
|
GIMPLE_CHECK (gs, GIMPLE_PREDICT);
|
||
|
|
gs->subcode = (gs->subcode & GF_PREDICT_TAKEN)
|
||
|
|
| (unsigned) predictor;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Return the outcome of GIMPLE_PREDICT statement GS. */
|
||
|
|
|
||
|
|
inline enum prediction
|
||
|
|
gimple_predict_outcome (const gimple *gs)
|
||
|
|
{
|
||
|
|
GIMPLE_CHECK (gs, GIMPLE_PREDICT);
|
||
|
|
return (gs->subcode & GF_PREDICT_TAKEN) ? TAKEN : NOT_TAKEN;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/* Set the outcome of GIMPLE_PREDICT statement GS to OUTCOME. */
|
||
|
|
|
||
|
|
inline void
|
||
|
|
gimple_predict_set_outcome (gimple *gs, enum prediction outcome)
|
||
|
|
{
|
||
|
|
GIMPLE_CHECK (gs, GIMPLE_PREDICT);
|
||
|
|
if (outcome == TAKEN)
|
||
|
|
gs->subcode |= GF_PREDICT_TAKEN;
|
||
|
|
else
|
||
|
|
gs->subcode &= ~GF_PREDICT_TAKEN;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Build a GIMPLE_PREDICT statement. PREDICT is one of the predictors from
|
||
|
|
predict.def, OUTCOME is NOT_TAKEN or TAKEN. */
|
||
|
|
|
||
|
|
inline gimple *
|
||
|
|
gimple_build_predict (enum br_predictor predictor, enum prediction outcome)
|
||
|
|
{
|
||
|
|
gimple *p = gimple_alloc (GIMPLE_PREDICT, 0);
|
||
|
|
/* Ensure all the predictors fit into the lower bits of the subcode. */
|
||
|
|
gcc_assert ((int) END_PREDICTORS <= GF_PREDICT_TAKEN);
|
||
|
|
gimple_predict_set_predictor (p, predictor);
|
||
|
|
gimple_predict_set_outcome (p, outcome);
|
||
|
|
return p;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Return true if GS is a GIMPLE_PREDICT statement. */
|
||
|
|
|
||
|
|
inline bool
|
||
|
|
is_gimple_predict (const gimple *gs)
|
||
|
|
{
|
||
|
|
return gimple_code (gs) == GIMPLE_PREDICT;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* GCC_GIMPLE_PREDICT_H */
|