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bpo-43693: Add the MAKE_CELL opcode and interleave fast locals offsets. (gh-26396)

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This moves logic out of the frame initialization code and into the compiler and eval loop.  Doing so simplifies the runtime code and allows us to optimize it better.

https://bugs.python.org/issue43693
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Eric Snow 2021-06-07 16:52:00 -06:00 • committed by GitHub
parent e915db3e9e
commit 631f9938b1
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16 changed files with 4469 additions and 4234 deletions
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13
Objects/typeobject.c
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@ -11,6 +11,8 @@
#include "pycore_pystate.h" // _PyThreadState_GET()
#include "pycore_unionobject.h" // _Py_Union(), _Py_union_type_or
#include "frameobject.h"
#include "pycore_frame.h" // _PyFrame_OpAlreadyRan
#include "opcode.h" // MAKE_CELL
#include "structmember.h" // PyMemberDef
#include <ctype.h>
@ -8877,14 +8879,17 @@ super_init_without_args(PyFrameObject *f, PyCodeObject *co,
}
PyObject *obj = f->f_localsptr[0];
Py_ssize_t i;
int i;
if (obj == NULL && co->co_cell2arg) {
/* The first argument might be a cell. */
for (i = 0; i < co->co_ncellvars; i++) {
if (co->co_cell2arg[i] == 0) {
PyObject *cell = f->f_localsptr[co->co_nlocals + i];
assert(PyCell_Check(cell));
obj = PyCell_GET(cell);
int celloffset = co->co_nlocals + i;
PyObject *cell = f->f_localsptr[celloffset];
if (PyCell_Check(cell) &&
_PyFrame_OpAlreadyRan(f, MAKE_CELL, celloffset)) {
obj = PyCell_GET(cell);
}
break;
}
}