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gh-gh-131798: optimize LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN in the JIT (#148555)

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Kumar Aditya 2026-04-14 21:00:32 +05:30 • committed by GitHub
parent c88c27b0c1
commit 1aa7e7ee6d
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11 changed files with 1353 additions and 1168 deletions
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33
Python/bytecodes.c
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@ -2942,35 +2942,34 @@ dummy_func(
_SAVE_RETURN_OFFSET +
_PUSH_FRAME;
inst(LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN, (unused/1, type_version/2, func_version/2, getattribute/4, owner -- unused)) {
PyObject *owner_o = PyStackRef_AsPyObjectBorrow(owner);
op(_LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN_FRAME, (func_version/2, getattribute/4, owner -- new_frame)) {
assert((oparg & 1) == 0);
DEOPT_IF(IS_PEP523_HOOKED(tstate));
PyTypeObject *cls = Py_TYPE(owner_o);
assert(type_version != 0);
DEOPT_IF(FT_ATOMIC_LOAD_UINT_RELAXED(cls->tp_version_tag) != type_version);
assert(Py_IS_TYPE(getattribute, &PyFunction_Type));
PyFunctionObject *f = (PyFunctionObject *)getattribute;
assert(func_version != 0);
DEOPT_IF(f->func_version != func_version);
EXIT_IF(f->func_version != func_version);
PyCodeObject *code = (PyCodeObject *)f->func_code;
assert(code->co_argcount == 2);
DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize));
EXIT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize));
STAT_INC(LOAD_ATTR, hit);
PyObject *name = GETITEM(FRAME_CO_NAMES, oparg >> 1);
_PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(
_PyInterpreterFrame *pushed_frame = _PyFrame_PushUnchecked(
tstate, PyStackRef_FromPyObjectNew(f), 2, frame);
new_frame->localsplus[0] = owner;
pushed_frame->localsplus[0] = owner;
DEAD(owner);
// Manipulate stack directly because we exit with DISPATCH_INLINED().
SYNC_SP();
new_frame->localsplus[1] = PyStackRef_FromPyObjectNew(name);
frame->return_offset = INSTRUCTION_SIZE;
DISPATCH_INLINED(new_frame);
pushed_frame->localsplus[1] = PyStackRef_FromPyObjectNew(name);
new_frame = PyStackRef_Wrap(pushed_frame);
}
macro(LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN) =
unused/1 +
_RECORD_TOS_TYPE +
_GUARD_TYPE_VERSION +
_CHECK_PEP_523 +
_LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN_FRAME +
_SAVE_RETURN_OFFSET +
_PUSH_FRAME;
op(_GUARD_DORV_NO_DICT, (owner -- owner)) {
PyObject *owner_o = PyStackRef_AsPyObjectBorrow(owner);