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gh-106529: Split FOR_ITER_RANGE into uops (#106638)

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For an example of what this does for Tier 1 and Tier 2, see
https://github.com/python/cpython/issues/106529#issuecomment-1631649920
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Guido van Rossum 2023-07-12 10:23:59 -07:00 • committed by GitHub
parent 7f55f58b6c
commit dd1884dc5d
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6 changed files with 146 additions and 28 deletions
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34
Python/executor_cases.c.h generated
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@ -1720,6 +1720,40 @@
break;
}
case _ITER_CHECK_RANGE: {
PyObject *iter = stack_pointer[-1];
_PyRangeIterObject *r = (_PyRangeIterObject *)iter;
DEOPT_IF(Py_TYPE(r) != &PyRangeIter_Type, FOR_ITER);
break;
}
case _ITER_EXHAUSTED_RANGE: {
PyObject *iter = stack_pointer[-1];
PyObject *exhausted;
_PyRangeIterObject *r = (_PyRangeIterObject *)iter;
assert(Py_TYPE(r) == &PyRangeIter_Type);
exhausted = r->len <= 0 ? Py_True : Py_False;
STACK_GROW(1);
stack_pointer[-1] = exhausted;
break;
}
case _ITER_NEXT_RANGE: {
PyObject *iter = stack_pointer[-1];
PyObject *next;
_PyRangeIterObject *r = (_PyRangeIterObject *)iter;
assert(Py_TYPE(r) == &PyRangeIter_Type);
assert(r->len > 0);
long value = r->start;
r->start = value + r->step;
r->len--;
next = PyLong_FromLong(value);
if (next == NULL) goto error;
STACK_GROW(1);
stack_pointer[-1] = next;
break;
}
case WITH_EXCEPT_START: {
PyObject *val = stack_pointer[-1];
PyObject *lasti = stack_pointer[-3];