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gh-93382: Cache result of PyCode_GetCode in codeobject (GH-93383)

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Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
Co-authored-by: Dennis Sweeney <36520290+sweeneyde@users.noreply.github.com>
This commit is contained in:
Ken Jin 2022-06-04 00:41:18 +08:00 • committed by GitHub
parent d8f40ead92
commit d52ffc1d1f
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5 changed files with 21 additions and 4 deletions
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8
Objects/frameobject.c
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@ -458,22 +458,30 @@ _PyFrame_GetState(PyFrameObject *frame)
static void
add_load_fast_null_checks(PyCodeObject *co)
{
int changed = 0;
_Py_CODEUNIT *instructions = _PyCode_CODE(co);
for (Py_ssize_t i = 0; i < Py_SIZE(co); i++) {
switch (_Py_OPCODE(instructions[i])) {
case LOAD_FAST:
case LOAD_FAST__LOAD_FAST:
case LOAD_FAST__LOAD_CONST:
changed = 1;
_Py_SET_OPCODE(instructions[i], LOAD_FAST_CHECK);
break;
case LOAD_CONST__LOAD_FAST:
changed = 1;
_Py_SET_OPCODE(instructions[i], LOAD_CONST);
break;
case STORE_FAST__LOAD_FAST:
changed = 1;
_Py_SET_OPCODE(instructions[i], STORE_FAST);
break;
}
}
if (changed) {
// invalidate cached co_code object
Py_CLEAR(co->_co_code);
}
}
/* Setter for f_lineno - you can set f_lineno from within a trace function in