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gh-134584: Eliminate redundant refcounting from IS_OP (GH-143171)

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Eliminate redundant refcounting from IS_OP
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Hai Zhu 2025-12-27 04:30:02 +08:00 • committed by GitHub
parent b3f2d80569
commit a1c6308346
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GPG key ID: B5690EEEBB952194
9 changed files with 1061 additions and 919 deletions
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49
Python/generated_cases.c.h generated
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@ -7192,25 +7192,36 @@
_PyStackRef left;
_PyStackRef right;
_PyStackRef b;
right = stack_pointer[-1];
left = stack_pointer[-2];
int res = Py_Is(PyStackRef_AsPyObjectBorrow(left), PyStackRef_AsPyObjectBorrow(right)) ^ oparg;
_PyFrame_SetStackPointer(frame, stack_pointer);
_PyStackRef tmp = right;
right = PyStackRef_NULL;
stack_pointer[-1] = right;
PyStackRef_CLOSE(tmp);
tmp = left;
left = PyStackRef_NULL;
stack_pointer[-2] = left;
PyStackRef_CLOSE(tmp);
stack_pointer = _PyFrame_GetStackPointer(frame);
stack_pointer += -2;
ASSERT_WITHIN_STACK_BOUNDS(__FILE__, __LINE__);
b = res ? PyStackRef_True : PyStackRef_False;
stack_pointer[0] = b;
stack_pointer += 1;
ASSERT_WITHIN_STACK_BOUNDS(__FILE__, __LINE__);
_PyStackRef l;
_PyStackRef r;
_PyStackRef value;
// _IS_OP
{
right = stack_pointer[-1];
left = stack_pointer[-2];
int res = Py_Is(PyStackRef_AsPyObjectBorrow(left), PyStackRef_AsPyObjectBorrow(right)) ^ oparg;
b = res ? PyStackRef_True : PyStackRef_False;
l = left;
r = right;
}
// _POP_TOP
{
value = r;
stack_pointer[-2] = b;
stack_pointer[-1] = l;
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_XCLOSE(value);
stack_pointer = _PyFrame_GetStackPointer(frame);
}
// _POP_TOP
{
value = l;
stack_pointer += -1;
ASSERT_WITHIN_STACK_BOUNDS(__FILE__, __LINE__);
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_XCLOSE(value);
stack_pointer = _PyFrame_GetStackPointer(frame);
}
DISPATCH();
}