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bpo-44525: Copy free variables in bytecode to allow calls to inner functions to be specialized (GH-29595)

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* Make internal APIs that take PyFrameConstructor take a PyFunctionObject instead.

* Add reference to function to frame, borrow references to builtins and globals.

* Add COPY_FREE_VARS instruction to allow specialization of calls to inner functions.
This commit is contained in:
Mark Shannon 2021-11-23 09:53:24 +00:00 • committed by GitHub
parent d82f2caf94
commit 135cabd328
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GPG key ID: 4AEE18F83AFDEB23
25 changed files with 268 additions and 156 deletions
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33
Objects/funcobject.c
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@ -9,6 +9,39 @@
static uint32_t next_func_version = 1;
PyFunctionObject *
_PyFunction_FromConstructor(PyFrameConstructor *constr)
{
PyFunctionObject *op = PyObject_GC_New(PyFunctionObject, &PyFunction_Type);
if (op == NULL) {
return NULL;
}
Py_INCREF(constr->fc_globals);
op->func_globals = constr->fc_globals;
Py_INCREF(constr->fc_builtins);
op->func_builtins = constr->fc_builtins;
Py_INCREF(constr->fc_name);
op->func_name = constr->fc_name;
Py_INCREF(constr->fc_qualname);
op->func_qualname = constr->fc_qualname;
Py_INCREF(constr->fc_code);
op->func_code = constr->fc_code;
op->func_defaults = NULL;
op->func_kwdefaults = NULL;
op->func_closure = NULL;
Py_INCREF(Py_None);
op->func_doc = Py_None;
op->func_dict = NULL;
op->func_weakreflist = NULL;
op->func_module = NULL;
op->func_annotations = NULL;
op->vectorcall = _PyFunction_Vectorcall;
op->func_version = 0;
_PyObject_GC_TRACK(op);
return op;
}
PyObject *
PyFunction_NewWithQualName(PyObject *code, PyObject *globals, PyObject *qualname)
{