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GH-127705: Use _PyStackRefs in the default build. (GH-127875)

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Mark Shannon 2025-03-10 14:06:56 +00:00 • committed by GitHub
parent 7cc99a54b7
commit 2bef8ea8ea
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GPG key ID: B5690EEEBB952194
21 changed files with 688 additions and 254 deletions
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70
Python/bytecodes.c
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@ -311,7 +311,7 @@ dummy_func(
inst(LOAD_CONST_MORTAL, (-- value)) {
PyObject *obj = GETITEM(FRAME_CO_CONSTS, oparg);
value = PyStackRef_FromPyObjectNew(obj);
value = PyStackRef_FromPyObjectNewMortal(obj);
}
inst(LOAD_CONST_IMMORTAL, (-- value)) {
@ -327,6 +327,10 @@ dummy_func(
}
replicate(8) inst(STORE_FAST, (value --)) {
assert(
((_PyFrame_GetCode(frame)->co_flags & (CO_COROUTINE | CO_GENERATOR)) == 0) ||
PyStackRef_IsHeapSafe(value)
);
_PyStackRef tmp = GETLOCAL(oparg);
GETLOCAL(oparg) = value;
DEAD(value);
@ -338,6 +342,10 @@ dummy_func(
};
inst(STORE_FAST_LOAD_FAST, (value1 -- value2)) {
assert(
((_PyFrame_GetCode(frame)->co_flags & (CO_COROUTINE | CO_GENERATOR)) == 0) ||
PyStackRef_IsHeapSafe(value1)
);
uint32_t oparg1 = oparg >> 4;
uint32_t oparg2 = oparg & 15;
_PyStackRef tmp = GETLOCAL(oparg1);
@ -348,6 +356,14 @@ dummy_func(
}
inst(STORE_FAST_STORE_FAST, (value2, value1 --)) {
assert(
((_PyFrame_GetCode(frame)->co_flags & (CO_COROUTINE | CO_GENERATOR)) == 0) ||
PyStackRef_IsHeapSafe(value1)
);
assert(
((_PyFrame_GetCode(frame)->co_flags & (CO_COROUTINE | CO_GENERATOR)) == 0) ||
PyStackRef_IsHeapSafe(value2)
);
uint32_t oparg1 = oparg >> 4;
uint32_t oparg2 = oparg & 15;
_PyStackRef tmp = GETLOCAL(oparg1);
@ -642,10 +658,9 @@ dummy_func(
double dres =
((PyFloatObject *)left_o)->ob_fval *
((PyFloatObject *)right_o)->ob_fval;
PyObject *res_o = _PyFloat_FromDouble_ConsumeInputs(left, right, dres);
res = _PyFloat_FromDouble_ConsumeInputs(left, right, dres);
INPUTS_DEAD();
ERROR_IF(res_o == NULL, error);
res = PyStackRef_FromPyObjectSteal(res_o);
ERROR_IF(PyStackRef_IsNull(res), error);
}
pure op(_BINARY_OP_ADD_FLOAT, (left, right -- res)) {
@ -658,10 +673,9 @@ dummy_func(
double dres =
((PyFloatObject *)left_o)->ob_fval +
((PyFloatObject *)right_o)->ob_fval;
PyObject *res_o = _PyFloat_FromDouble_ConsumeInputs(left, right, dres);
res = _PyFloat_FromDouble_ConsumeInputs(left, right, dres);
INPUTS_DEAD();
ERROR_IF(res_o == NULL, error);
res = PyStackRef_FromPyObjectSteal(res_o);
ERROR_IF(PyStackRef_IsNull(res), error);
}
pure op(_BINARY_OP_SUBTRACT_FLOAT, (left, right -- res)) {
@ -674,10 +688,9 @@ dummy_func(
double dres =
((PyFloatObject *)left_o)->ob_fval -
((PyFloatObject *)right_o)->ob_fval;
PyObject *res_o = _PyFloat_FromDouble_ConsumeInputs(left, right, dres);
res = _PyFloat_FromDouble_ConsumeInputs(left, right, dres);
INPUTS_DEAD();
ERROR_IF(res_o == NULL, error);
res = PyStackRef_FromPyObjectSteal(res_o);
ERROR_IF(PyStackRef_IsNull(res), error);
}
macro(BINARY_OP_MULTIPLY_FLOAT) =
@ -733,6 +746,7 @@ dummy_func(
next_oparg = CURRENT_OPERAND0();
#endif
_PyStackRef *target_local = &GETLOCAL(next_oparg);
assert(PyUnicode_CheckExact(left_o));
DEOPT_IF(PyStackRef_AsPyObjectBorrow(*target_local) != left_o);
STAT_INC(BINARY_OP, hit);
/* Handle `left = left + right` or `left += right` for str.
@ -856,17 +870,16 @@ dummy_func(
PyObject *res_o = _PyList_GetItemRef((PyListObject*)list, index);
DEOPT_IF(res_o == NULL);
STAT_INC(BINARY_OP, hit);
res = PyStackRef_FromPyObjectSteal(res_o);
#else
DEOPT_IF(index >= PyList_GET_SIZE(list));
STAT_INC(BINARY_OP, hit);
PyObject *res_o = PyList_GET_ITEM(list, index);
assert(res_o != NULL);
Py_INCREF(res_o);
res = PyStackRef_FromPyObjectNew(res_o);
#endif
PyStackRef_CLOSE_SPECIALIZED(sub_st, _PyLong_ExactDealloc);
DEAD(sub_st);
PyStackRef_CLOSE(list_st);
res = PyStackRef_FromPyObjectSteal(res_o);
STAT_INC(BINARY_SUBSCR, hit);
DECREF_INPUTS();
}
inst(BINARY_OP_SUBSCR_STR_INT, (unused/5, str_st, sub_st -- res)) {
@ -886,7 +899,7 @@ dummy_func(
PyStackRef_CLOSE_SPECIALIZED(sub_st, _PyLong_ExactDealloc);
DEAD(sub_st);
PyStackRef_CLOSE(str_st);
res = PyStackRef_FromPyObjectSteal(res_o);
res = PyStackRef_FromPyObjectImmortal(res_o);
}
inst(BINARY_OP_SUBSCR_TUPLE_INT, (unused/5, tuple_st, sub_st -- res)) {
@ -903,11 +916,9 @@ dummy_func(
STAT_INC(BINARY_OP, hit);
PyObject *res_o = PyTuple_GET_ITEM(tuple, index);
assert(res_o != NULL);
Py_INCREF(res_o);
PyStackRef_CLOSE_SPECIALIZED(sub_st, _PyLong_ExactDealloc);
DEAD(sub_st);
PyStackRef_CLOSE(tuple_st);
res = PyStackRef_FromPyObjectSteal(res_o);
res = PyStackRef_FromPyObjectNew(res_o);
DECREF_INPUTS();
}
inst(BINARY_OP_SUBSCR_DICT, (unused/5, dict_st, sub_st -- res)) {
@ -1094,6 +1105,7 @@ dummy_func(
inst(RETURN_VALUE, (retval -- res)) {
assert(frame->owner != FRAME_OWNED_BY_INTERPRETER);
_PyStackRef temp = retval;
assert(PyStackRef_IsHeapSafe(temp));
DEAD(retval);
SAVE_STACK();
assert(EMPTY());
@ -1855,7 +1867,7 @@ dummy_func(
ERROR_NO_POP();
}
INPUTS_DEAD();
tup = PyStackRef_FromPyObjectSteal(tup_o);
tup = PyStackRef_FromPyObjectStealMortal(tup_o);
}
inst(BUILD_LIST, (values[oparg] -- list)) {
@ -1864,7 +1876,7 @@ dummy_func(
ERROR_NO_POP();
}
INPUTS_DEAD();
list = PyStackRef_FromPyObjectSteal(list_o);
list = PyStackRef_FromPyObjectStealMortal(list_o);
}
inst(LIST_EXTEND, (list_st, unused[oparg-1], iterable_st -- list_st, unused[oparg-1])) {
@ -1913,7 +1925,7 @@ dummy_func(
Py_DECREF(set_o);
ERROR_IF(true, error);
}
set = PyStackRef_FromPyObjectSteal(set_o);
set = PyStackRef_FromPyObjectStealMortal(set_o);
}
inst(BUILD_MAP, (values[oparg*2] -- map)) {
@ -1929,7 +1941,7 @@ dummy_func(
STACKREFS_TO_PYOBJECTS_CLEANUP(values_o);
DECREF_INPUTS();
ERROR_IF(map_o == NULL, error);
map = PyStackRef_FromPyObjectSteal(map_o);
map = PyStackRef_FromPyObjectStealMortal(map_o);
}
inst(SETUP_ANNOTATIONS, (--)) {
@ -3789,7 +3801,7 @@ dummy_func(
DEOPT_IF(callable_o != (PyObject *)&PyType_Type);
DEAD(callable);
STAT_INC(CALL, hit);
res = PyStackRef_FromPyObjectSteal(Py_NewRef(Py_TYPE(arg_o)));
res = PyStackRef_FromPyObjectNew(Py_TYPE(arg_o));
PyStackRef_CLOSE(arg);
}
@ -4413,9 +4425,7 @@ dummy_func(
// The frame has stolen all the arguments from the stack,
// so there is no need to clean them up.
SYNC_SP();
if (temp == NULL) {
ERROR_NO_POP();
}
ERROR_IF(temp == NULL, error);
new_frame = temp;
}
@ -4695,7 +4705,7 @@ dummy_func(
frame = tstate->current_frame = prev;
LOAD_IP(frame->return_offset);
RELOAD_STACK();
res = PyStackRef_FromPyObjectSteal((PyObject *)gen);
res = PyStackRef_FromPyObjectStealMortal((PyObject *)gen);
LLTRACE_RESUME_FRAME();
}
@ -4706,7 +4716,7 @@ dummy_func(
PyObject *slice_o = PySlice_New(start_o, stop_o, step_o);
DECREF_INPUTS();
ERROR_IF(slice_o == NULL, error);
slice = PyStackRef_FromPyObjectSteal(slice_o);
slice = PyStackRef_FromPyObjectStealMortal(slice_o);
}
inst(CONVERT_VALUE, (value -- result)) {