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GH-100110: Specialize FOR_ITER for tuples (GH-100109)

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* Specialize FOR_ITER for tuples
This commit is contained in:
Ken Jin 2022-12-09 18:27:01 +08:00 • committed by GitHub
parent 0448deac70
commit 748c6c0921
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 122 additions and 67 deletions
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23
Python/bytecodes.c
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@ -2523,6 +2523,29 @@ dummy_func(
end_for_iter_list:
}
// stack effect: ( -- __0)
inst(FOR_ITER_TUPLE) {
assert(cframe.use_tracing == 0);
_PyTupleIterObject *it = (_PyTupleIterObject *)TOP();
DEOPT_IF(Py_TYPE(it) != &PyTupleIter_Type, FOR_ITER);
STAT_INC(FOR_ITER, hit);
PyTupleObject *seq = it->it_seq;
if (seq) {
if (it->it_index < PyTuple_GET_SIZE(seq)) {
PyObject *next = PyTuple_GET_ITEM(seq, it->it_index++);
PUSH(Py_NewRef(next));
JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER);
goto end_for_iter_tuple; // End of this instruction
}
it->it_seq = NULL;
Py_DECREF(seq);
}
STACK_SHRINK(1);
Py_DECREF(it);
JUMPBY(INLINE_CACHE_ENTRIES_FOR_ITER + oparg + 1);
end_for_iter_tuple:
}
// stack effect: ( -- __0)
inst(FOR_ITER_RANGE) {
assert(cframe.use_tracing == 0);