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Issue #27255: Added more predictions in ceval.c.

This commit is contained in:
Serhiy Storchaka 2016-06-27 18:58:57 +03:00
parent 61d1e99923
commit da9c513414
1 changed files with 12 additions and 2 deletions
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14
Python/ceval.c
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@ -1000,8 +1000,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
/* OpCode prediction macros
Some opcodes tend to come in pairs thus making it possible to
predict the second code when the first is run. For example,
COMPARE_OP is often followed by JUMP_IF_FALSE or JUMP_IF_TRUE. And,
those opcodes are often followed by a POP_TOP.
COMPARE_OP is often followed by POP_JUMP_IF_FALSE or POP_JUMP_IF_TRUE.
Verifying the prediction costs a single high-speed test of a register
variable against a constant. If the pairing was good, then the
@ -1379,6 +1378,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
FAST_DISPATCH();
}
PREDICTED(LOAD_CONST);
TARGET(LOAD_CONST) {
PyObject *value = GETITEM(consts, oparg);
Py_INCREF(value);
@ -2008,6 +2008,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
}
SET_TOP(awaitable);
PREDICT(LOAD_CONST);
DISPATCH();
}
@ -2050,9 +2051,11 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
Py_DECREF(next_iter);
PUSH(awaitable);
PREDICT(LOAD_CONST);
DISPATCH();
}
PREDICTED(GET_AWAITABLE);
TARGET(GET_AWAITABLE) {
PyObject *iterable = TOP();
PyObject *iter = _PyCoro_GetAwaitableIter(iterable);
@ -2080,6 +2083,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
goto error;
}
PREDICT(LOAD_CONST);
DISPATCH();
}
@ -2135,6 +2139,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
DISPATCH();
}
PREDICTED(POP_BLOCK);
TARGET(POP_BLOCK) {
PyTryBlock *b = PyFrame_BlockPop(f);
UNWIND_BLOCK(b);
@ -3015,6 +3020,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
if (iter == NULL)
goto error;
PREDICT(FOR_ITER);
PREDICT(CALL_FUNCTION);
DISPATCH();
}
@ -3043,6 +3049,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
if (iter == NULL)
goto error;
}
PREDICT(LOAD_CONST);
DISPATCH();
}
@ -3068,6 +3075,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
STACKADJ(-1);
Py_DECREF(iter);
JUMPBY(oparg);
PREDICT(POP_BLOCK);
DISPATCH();
}
@ -3117,6 +3125,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
if (res == NULL)
goto error;
PUSH(res);
PREDICT(GET_AWAITABLE);
DISPATCH();
}
@ -3265,6 +3274,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
DISPATCH();
}
PREDICTED(CALL_FUNCTION);
TARGET(CALL_FUNCTION) {
PyObject **sp, *res;
PCALL(PCALL_ALL);