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bpo-46072: Include length in stats for UNPACK_SEQUENCE. #31254

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Merged
merged 1 commit into from
Feb 14, 2022
Merged

bpo-46072: Include length in stats for UNPACK_SEQUENCE. #31254

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4 changes: 2 additions & 2 deletions Python/ceval.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2734,10 +2734,10 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
PREDICTED(UNPACK_SEQUENCE);
PyObject *seq = POP(), *item, **items;
#ifdef Py_STATS
extern int _PySpecialization_ClassifySequence(PyObject *);
extern int _PySpecialization_ClassifySequence(PyObject *, int);
_py_stats.opcode_stats[UNPACK_SEQUENCE].specialization.failure++;
_py_stats.opcode_stats[UNPACK_SEQUENCE].specialization.
failure_kinds[_PySpecialization_ClassifySequence(seq)]++;
failure_kinds[_PySpecialization_ClassifySequence(seq, oparg)]++;
#endif
if (PyTuple_CheckExact(seq) &&
PyTuple_GET_SIZE(seq) == oparg) {
Expand Down
34 changes: 28 additions & 6 deletions Python/specialize.c
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Original file line number Diff line number Diff line change
Expand Up @@ -598,8 +598,26 @@ initial_counter_value(void) {
#define SPEC_FAIL_FOR_ITER_ENUMERATE 23

/* UNPACK_SEQUENCE */
#define SPEC_FAIL_UNPACK_SEQUENCE_TUPLE 10
#define SPEC_FAIL_UNPACK_SEQUENCE_LIST 11
#define SPEC_FAIL_UNPACK_SEQUENCE_TUPLE_0 9
#define SPEC_FAIL_UNPACK_SEQUENCE_TUPLE_1 10
#define SPEC_FAIL_UNPACK_SEQUENCE_TUPLE_2 11
#define SPEC_FAIL_UNPACK_SEQUENCE_TUPLE_3 12
#define SPEC_FAIL_UNPACK_SEQUENCE_TUPLE_4 13
#define SPEC_FAIL_UNPACK_SEQUENCE_TUPLE_N 14

#define SPEC_FAIL_UNPACK_SEQUENCE_LIST_0 15
#define SPEC_FAIL_UNPACK_SEQUENCE_LIST_1 16
#define SPEC_FAIL_UNPACK_SEQUENCE_LIST_2 17
#define SPEC_FAIL_UNPACK_SEQUENCE_LIST_3 18
#define SPEC_FAIL_UNPACK_SEQUENCE_LIST_4 19
#define SPEC_FAIL_UNPACK_SEQUENCE_LIST_N 20

#define SPEC_FAIL_UNPACK_SEQUENCE_OTHER_0 21
#define SPEC_FAIL_UNPACK_SEQUENCE_OTHER_1 22
#define SPEC_FAIL_UNPACK_SEQUENCE_OTHER_2 23
#define SPEC_FAIL_UNPACK_SEQUENCE_OTHER_3 24
#define SPEC_FAIL_UNPACK_SEQUENCE_OTHER_4 25
#define SPEC_FAIL_UNPACK_SEQUENCE_OTHER_N 26


static int
Expand Down Expand Up @@ -1974,15 +1992,19 @@ int
}

int
_PySpecialization_ClassifySequence(PyObject *seq)
_PySpecialization_ClassifySequence(PyObject *seq, int n)
{
assert(n >= 0);
if (n > 4) {
n = 5;
}
if (PyTuple_CheckExact(seq)) {
return SPEC_FAIL_UNPACK_SEQUENCE_TUPLE;
return SPEC_FAIL_UNPACK_SEQUENCE_TUPLE_0 + n;
}
if (PyList_CheckExact(seq)) {
return SPEC_FAIL_UNPACK_SEQUENCE_LIST;
return SPEC_FAIL_UNPACK_SEQUENCE_LIST_0 + n;
}
return SPEC_FAIL_OTHER;
return SPEC_FAIL_UNPACK_SEQUENCE_OTHER_0 + n;
}

int
Expand Down