8000 gh-98831: Modernize CALL_FUNCTION_EX by gvanrossum · Pull Request #101627 · python/cpython · GitHub
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gh-98831: Modernize CALL_FUNCTION_EX #101627

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Merged
merged 3 commits into from
Feb 8, 2023
Merged

gh-98831: Modernize CALL_FUNCTION_EX #101627

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c43d20b
Special-case CHECK_EVAL_BREAKER()
gvanrossum Feb 3, 2023
f2bad0d
Modernize CALL_FUNCTION_EX
gvanrossum Feb 7, 2023
19307ba
Fix crash due to refcount shenanigans
gvanrossum Feb 7, 2023
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Modernize CALL_FUNCTION_EX
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@gvanrossum
gvanrossum committed Feb 7, 2023
commit f2bad0debbbdaf74e79410a1d6d12aea1337c867
18 changes: 4 additions & 14 deletions Python/bytecodes.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2949,20 +2949,14 @@ dummy_func(
CHECK_EVAL_BREAKER();
}

// error: CALL_FUNCTION_EX has irregular stack effect
inst(CALL_FUNCTION_EX) {
PyObject *func, *callargs, *kwargs = NULL, *result;
if (oparg & 0x01) {
kwargs = POP();
inst(CALL_FUNCTION_EX, (null, func, callargs, kwargs if (oparg & 1) -- result)) {
if (oparg & 1) {
// DICT_MERGE is called before this opcode if there are kwargs.
// It converts all dict subtypes in kwargs into regular dicts.
assert(PyDict_CheckExact(kwargs));
}
callargs = POP();
func = TOP();
if (!PyTuple_CheckExact(callargs)) {
if (check_args_iterable(tstate, func, callargs) < 0) {
Py_DECREF(callargs);
goto error;
}
Py_SETREF(callargs, PySequence_Tuple(callargs));
Expand All @@ -2977,12 +2971,8 @@ dummy_func(
Py_DECREF(callargs);
Py_XDECREF(kwargs);

STACK_SHRINK(1);
assert(TOP() == NULL);
SET_TOP(result);
if (result == NULL) {
goto error;
}
assert(null == NULL);
ERROR_IF(result == NULL, error);
CHECK_EVAL_BREAKER();
}

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23 changes: 11 additions & 12 deletions Python/generated_cases.c.h
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4 changes: 2 additions & 2 deletions Python/opcode_metadata.h
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Original file line number Diff line number Diff line change
Expand Up @@ -323,7 +323,7 @@ _PyOpcode_num_popped(int opcode, int oparg, bool jump) {
case CALL_NO_KW_METHOD_DESCRIPTOR_FAST:
return -1;
case CALL_FUNCTION_EX:
return -1;
return ((oparg & 1) ? 1 : 0) + 3;
case MAKE_FUNCTION:
return ((oparg & 0x01) ? 1 : 0) + ((oparg & 0x02) ? 1 : 0) + ((oparg & 0x04) ? 1 : 0) + ((oparg & 0x08) ? 1 : 0) + 1;
case RETURN_GENERATOR:
Expand Down Expand Up @@ -669,7 +669,7 @@ _PyOpcode_num_pushed(int opcode, int oparg, bool jump) {
case CALL_NO_KW_METHOD_DESCRIPTOR_FAST:
return -1;
case CALL_FUNCTION_EX:
return -1;
return 1;
case MAKE_FUNCTION:
return 1;
case RETURN_GENERATOR:
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