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bpo-46841: Quicken code in-place (GH-31888)

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* Moves the bytecode to the end of the corresponding PyCodeObject, and quickens it in-place.

* Removes the almost-always-unused co_varnames, co_freevars, and co_cellvars member caches

* _PyOpcode_Deopt is a new mapping from all opcodes to their un-quickened forms.

* _PyOpcode_InlineCacheEntries is renamed to _PyOpcode_Caches

* _Py_IncrementCountAndMaybeQuicken is renamed to _PyCode_Warmup

* _Py_Quicken is renamed to _PyCode_Quicken

* _co_quickened is renamed to _co_code_adaptive (and is now a read-only memoryview).

* Do not emit unused nonzero opargs anymore in the compiler.
This commit is contained in:
Brandt Bucher 2022-03-21 04:11:17 -07:00 • committed by GitHub
parent 08eb754d84
commit 2bde6827ea
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GPG key ID: 4AEE18F83AFDEB23
18 changed files with 832 additions and 688 deletions
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8
Python/marshal.c
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@ -544,13 +544,18 @@ w_complex_object(PyObject *v, char flag, WFILE *p)
}
else if (PyCode_Check(v)) {
PyCodeObject *co = (PyCodeObject *)v;
PyObject *co_code = _PyCode_GetCode(co);
if (co_code == NULL) {
p->error = WFERR_NOMEMORY;
return;
}
W_TYPE(TYPE_CODE, p);
w_long(co->co_argcount, p);
w_long(co->co_posonlyargcount, p);
w_long(co->co_kwonlyargcount, p);
w_long(co->co_stacksize, p);
w_long(co->co_flags, p);
w_object(co->co_code, p);
w_object(co_code, p);
w_object(co->co_consts, p);
w_object(co->co_names, p);
w_object(co->co_localsplusnames, p);
@ -563,6 +568,7 @@ w_complex_object(PyObject *v, char flag, WFILE *p)
w_object(co->co_endlinetable, p);
w_object(co->co_columntable, p);
w_object(co->co_exceptiontable, p);
Py_DECREF(co_code);
}
else if (PyObject_CheckBuffer(v)) {
/* Write unknown bytes-like objects as a bytes object */