Filed PR jit/66812 for the code generation issue

[Dibyendu Majumdar]

> BTW, are Lua/Ravi constants truly constant?  If so, then I'd believe
> you'd get a performance win by implementing LOADK by emitting code to
> write the specific tt and value_ directly, rather than code that copies
> a value from the table.

Yes - I do specialize to constants in certain cases - such as loops
and numeric operations. But more can be done.

>
> This would enable the optimizer to "know" the tt and value_, and
> optimize accordingly.  For example, in this case, I believe it would
> allow the function to be optimized away down to the equivalent of just a
> "return false;".  Obviously won't help much for a function without a
> loop, but if it saves instructions inside a loop, that's probably a win.
>
> (...though maybe not before we track down this issue)
>

Regards