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bpo-45367: Specialize BINARY_MULTIPLY (GH-28727)

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Dennis Sweeney 2021-10-14 10:56:33 -04:00 • committed by GitHub
parent c96d1546b1
commit 3b3d30e8f7
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9 changed files with 162 additions and 55 deletions
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33
Python/specialize.c
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@ -124,6 +124,7 @@ _Py_GetSpecializationStats(void) {
err += add_stat_dict(stats, LOAD_GLOBAL, "load_global");
err += add_stat_dict(stats, LOAD_METHOD, "load_method");
err += add_stat_dict(stats, BINARY_ADD, "binary_add");
err += add_stat_dict(stats, BINARY_MULTIPLY, "binary_multiply");
err += add_stat_dict(stats, BINARY_SUBSCR, "binary_subscr");
err += add_stat_dict(stats, STORE_ATTR, "store_attr");
if (err < 0) {
@ -180,6 +181,7 @@ _Py_PrintSpecializationStats(void)
print_stats(out, &_specialization_stats[LOAD_GLOBAL], "load_global");
print_stats(out, &_specialization_stats[LOAD_METHOD], "load_method");
print_stats(out, &_specialization_stats[BINARY_ADD], "binary_add");
print_stats(out, &_specialization_stats[BINARY_MULTIPLY], "binary_multiply");
print_stats(out, &_specialization_stats[BINARY_SUBSCR], "binary_subscr");
print_stats(out, &_specialization_stats[STORE_ATTR], "store_attr");
if (out != stderr) {
@ -230,6 +232,7 @@ static uint8_t adaptive_opcodes[256] = {
[LOAD_GLOBAL] = LOAD_GLOBAL_ADAPTIVE,
[LOAD_METHOD] = LOAD_METHOD_ADAPTIVE,
[BINARY_ADD] = BINARY_ADD_ADAPTIVE,
[BINARY_MULTIPLY] = BINARY_MULTIPLY_ADAPTIVE,
[BINARY_SUBSCR] = BINARY_SUBSCR_ADAPTIVE,
[STORE_ATTR] = STORE_ATTR_ADAPTIVE,
};
@ -240,6 +243,7 @@ static uint8_t cache_requirements[256] = {
[LOAD_GLOBAL] = 2, /* _PyAdaptiveEntry and _PyLoadGlobalCache */
[LOAD_METHOD] = 3, /* _PyAdaptiveEntry, _PyAttrCache and _PyObjectCache */
[BINARY_ADD] = 0,
[BINARY_MULTIPLY] = 0,
[BINARY_SUBSCR] = 0,
[STORE_ATTR] = 2, /* _PyAdaptiveEntry and _PyAttrCache */
};
@ -1188,3 +1192,32 @@ success:
assert(!PyErr_Occurred());
return 0;
}
int
_Py_Specialize_BinaryMultiply(PyObject *left, PyObject *right, _Py_CODEUNIT *instr)
{
if (!Py_IS_TYPE(left, Py_TYPE(right))) {
SPECIALIZATION_FAIL(BINARY_MULTIPLY, SPEC_FAIL_DIFFERENT_TYPES);
goto fail;
}
if (PyLong_CheckExact(left)) {
*instr = _Py_MAKECODEUNIT(BINARY_MULTIPLY_INT, saturating_start());
goto success;
}
else if (PyFloat_CheckExact(left)) {
*instr = _Py_MAKECODEUNIT(BINARY_MULTIPLY_FLOAT, saturating_start());
goto success;
}
else {
SPECIALIZATION_FAIL(BINARY_MULTIPLY, SPEC_FAIL_OTHER);
}
fail:
STAT_INC(BINARY_MULTIPLY, specialization_failure);
assert(!PyErr_Occurred());
*instr = _Py_MAKECODEUNIT(_Py_OPCODE(*instr), ADAPTIVE_CACHE_BACKOFF);
return 0;
success:
STAT_INC(BINARY_MULTIPLY, specialization_success);
assert(!PyErr_Occurred());
return 0;
}