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gh-98831: rewrite RERAISE and CLEANUP_THROW in the instruction definition DSL (#101511)

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Irit Katriel 2023-02-02 10:02:57 +00:00 committed by GitHub
parent ee21110086
commit 0675b8f032
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 34 additions and 34 deletions
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28
Python/bytecodes.c
View File

@ -739,10 +739,10 @@ dummy_func(
Py_XSETREF(exc_info->exc_value, exc_value);
}
// stack effect: (__0 -- )
inst(RERAISE) {
inst(RERAISE, (values[oparg], exc -- values[oparg])) {
assert(oparg >= 0 && oparg <= 2);
if (oparg) {
PyObject *lasti = PEEK(oparg + 1);
PyObject *lasti = values[0];
if (PyLong_Check(lasti)) {
frame->prev_instr = _PyCode_CODE(frame->f_code) + PyLong_AsLong(lasti);
assert(!_PyErr_Occurred(tstate));
@ -753,11 +753,11 @@ dummy_func(
goto error;
}
}
PyObject *val = POP();
assert(val && PyExceptionInstance_Check(val));
PyObject *exc = Py_NewRef(PyExceptionInstance_Class(val));
PyObject *tb = PyException_GetTraceback(val);
_PyErr_Restore(tstate, exc, val, tb);
assert(exc && PyExceptionInstance_Check(exc));
Py_INCREF(exc);
PyObject *typ = Py_NewRef(PyExceptionInstance_Class(exc));
PyObject *tb = PyException_GetTraceback(exc);
_PyErr_Restore(tstate, typ, exc, tb);
goto exception_unwind;
}
@ -784,18 +784,12 @@ dummy_func(
}
}
// stack effect: (__0, __1 -- )
inst(CLEANUP_THROW) {
inst(CLEANUP_THROW, (sub_iter, last_sent_val, exc_value -- value)) {
assert(throwflag);
PyObject *exc_value = TOP();
assert(exc_value && PyExceptionInstance_Check(exc_value));
if (PyErr_GivenExceptionMatches(exc_value, PyExc_StopIteration)) {
PyObject *value = ((PyStopIterationObject *)exc_value)->value;
Py_INCREF(value);
Py_DECREF(POP()); // The StopIteration.
Py_DECREF(POP()); // The last sent value.
Py_DECREF(POP()); // The delegated sub-iterator.
PUSH(value);
value = Py_NewRef(((PyStopIterationObject *)exc_value)->value);
DECREF_INPUTS();
}
else {
PyObject *exc_type = Py_NewRef(Py_TYPE(exc_value));

32
Python/generated_cases.c.h generated
View File

@ -945,8 +945,11 @@
}
TARGET(RERAISE) {
PyObject *exc = PEEK(1);
PyObject **values = &PEEK(1 + oparg);
assert(oparg >= 0 && oparg <= 2);
if (oparg) {
PyObject *lasti = PEEK(oparg + 1);
PyObject *lasti = values[0];
if (PyLong_Check(lasti)) {
frame->prev_instr = _PyCode_CODE(frame->f_code) + PyLong_AsLong(lasti);
assert(!_PyErr_Occurred(tstate));
@ -957,11 +960,11 @@
goto error;
}
}
PyObject *val = POP();
assert(val && PyExceptionInstance_Check(val));
PyObject *exc = Py_NewRef(PyExceptionInstance_Class(val));
PyObject *tb = PyException_GetTraceback(val);
_PyErr_Restore(tstate, exc, val, tb);
assert(exc && PyExceptionInstance_Check(exc));
Py_INCREF(exc);
PyObject *typ = Py_NewRef(PyExceptionInstance_Class(exc));
PyObject *tb = PyException_GetTraceback(exc);
_PyErr_Restore(tstate, typ, exc, tb);
goto exception_unwind;
}
@ -1001,16 +1004,17 @@
}
TARGET(CLEANUP_THROW) {
PyObject *exc_value = PEEK(1);
PyObject *last_sent_val = PEEK(2);
PyObject *sub_iter = PEEK(3);
PyObject *value;
assert(throwflag);
PyObject *exc_value = TOP();
assert(exc_value && PyExceptionInstance_Check(exc_value));
if (PyErr_GivenExceptionMatches(exc_value, PyExc_StopIteration)) {
PyObject *value = ((PyStopIterationObject *)exc_value)->value;
Py_INCREF(value);
Py_DECREF(POP()); // The StopIteration.
Py_DECREF(POP()); // The last sent value.
Py_DECREF(POP()); // The delegated sub-iterator.
PUSH(value);
value = Py_NewRef(((PyStopIterationObject *)exc_value)->value);
Py_DECREF(sub_iter);
Py_DECREF(last_sent_val);
Py_DECREF(exc_value);
}
else {
PyObject *exc_type = Py_NewRef(Py_TYPE(exc_value));
@ -1018,6 +1022,8 @@
_PyErr_Restore(tstate, exc_type, Py_NewRef(exc_value), exc_traceback);
goto exception_unwind;
}
STACK_SHRINK(2);
POKE(1, value);
DISPATCH();
}

8
Python/opcode_metadata.h
View File

@ -105,13 +105,13 @@ _PyOpcode_num_popped(int opcode, int oparg, bool jump) {
case POP_EXCEPT:
return 1;
case RERAISE:
return -1;
return oparg + 1;
case PREP_RERAISE_STAR:
return 2;
case END_ASYNC_FOR:
return 2;
case CLEANUP_THROW:
return -1;
return 3;
case LOAD_ASSERTION_ERROR:
return 0;
case LOAD_BUILD_CLASS:
@ -451,13 +451,13 @@ _PyOpcode_num_pushed(int opcode, int oparg, bool jump) {
case POP_EXCEPT:
return 0;
case RERAISE:
return -1;
return oparg;
case PREP_RERAISE_STAR:
return 1;
case END_ASYNC_FOR:
return 0;
case CLEANUP_THROW:
return -1;
return 1;
case LOAD_ASSERTION_ERROR:
return 1;
case LOAD_BUILD_CLASS: