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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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6
Python/pystate.c
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@ -2087,9 +2087,9 @@ _PyThreadState_BumpFramePointerSlow(PyThreadState *tstate, size_t size)
InterpreterFrame *
_PyThreadState_PushFrame(PyThreadState *tstate, PyFrameConstructor *con, PyObject *locals)
_PyThreadState_PushFrame(PyThreadState *tstate, PyFunctionObject *func, PyObject *locals)
{
PyCodeObject *code = (PyCodeObject *)con->fc_code;
PyCodeObject *code = (PyCodeObject *)func->func_code;
int nlocalsplus = code->co_nlocalsplus;
size_t size = nlocalsplus + code->co_stacksize +
FRAME_SPECIALS_SIZE;
@ -2097,7 +2097,7 @@ _PyThreadState_PushFrame(PyThreadState *tstate, PyFrameConstructor *con, PyObjec
if (frame == NULL) {
return NULL;
}
_PyFrame_InitializeSpecials(frame, con, locals, nlocalsplus);
_PyFrame_InitializeSpecials(frame, func, locals, nlocalsplus);
for (int i=0; i < nlocalsplus; i++) {
frame->localsplus[i] = NULL;
}