_CHECK_FUNCTION interferes with partial evaluation

Feature or enhancement

Proposal:

A reminder of how _CHECK_FUNCTION looks like:

        tier2 op(_CHECK_FUNCTION, (func_version/2 -- )) {
            assert(PyStackRef_FunctionCheck(frame->f_funcobj));
            PyFunctionObject *func = (PyFunctionObject *)PyStackRef_AsPyObjectBorrow(frame->f_funcobj);
            DEOPT_IF(func->func_version != func_version);
        }

frame->f_funcobj becomes invalid once we start inlining functions. Thus we should "burn in" the function object version to be checked whenever possible, to not interfere with inlining and partial evaluation.

An added benefit is that the "burned in" version is also cheaper as it doesn't have to read from the frame struct, rather reading from the instruction itself in the JIT.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Linked PRs

• gh-126856

Comece pela operação tier2 _CHECK_FUNCTION mostrada na issue e examine como frame->f_funcobj é usado quando as funções são inlined. Revise o PR vinculado gh-126856 e determine se a versão da função pode ser gravada na instrução sem interferir na avaliação parcial; considera-se concluído quando a verificação da versão não depender mais, quando possível, da referência invalidada ao frame.