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bpo-47127: Specialize calls for fastcall c methods with keywords (GH-32125)

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* add PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS
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Kumar Aditya 2022-03-28 01:23:25 +05:30 • committed by GitHub
parent 785cc67705
commit 58448cbd96
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6 changed files with 77 additions and 37 deletions
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32
Python/ceval.c
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@ -5090,6 +5090,38 @@ handle_eval_breaker:
DISPATCH();
}
TARGET(PRECALL_METHOD_DESCRIPTOR_FAST_WITH_KEYWORDS) {
int is_meth = is_method(stack_pointer, oparg);
int total_args = oparg + is_meth;
PyObject *callable = PEEK(total_args + 1);
DEOPT_IF(!Py_IS_TYPE(callable, &PyMethodDescr_Type), PRECALL);
PyMethodDef *meth = ((PyMethodDescrObject *)callable)->d_method;
DEOPT_IF(meth->ml_flags != (METH_FASTCALL|METH_KEYWORDS), PRECALL);
STAT_INC(PRECALL, hit);
SKIP_CALL();
int nargs = total_args-1;
STACK_SHRINK(nargs);
_PyCFunctionFastWithKeywords cfunc = (_PyCFunctionFastWithKeywords)(void(*)(void))meth->ml_meth;
PyObject *self = TOP();
PyObject *res = cfunc(self, stack_pointer, nargs - KWNAMES_LEN(), call_shape.kwnames);
assert((res != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
call_shape.kwnames = NULL;
/* Free the arguments. */
for (int i = 0; i < nargs; i++) {
Py_DECREF(stack_pointer[i]);
}
Py_DECREF(self);
STACK_SHRINK(2-is_meth);
SET_TOP(res);
Py_DECREF(callable);
if (res == NULL) {
goto error;
}
CHECK_EVAL_BREAKER();
DISPATCH();
}
TARGET(PRECALL_NO_KW_METHOD_DESCRIPTOR_NOARGS) {
assert(call_shape.kwnames == NULL);
assert(oparg == 0 || oparg == 1);