[Libre-soc-dev] MVL unclear

Lauri Kasanen cand at gmx.com
Fri May 21 14:07:06 BST 2021

On Fri, 21 May 2021 14:00:53 +0100
Luke Kenneth Casson Leighton <lkcl at lkcl.net> wrote:

> > > and a MASSIVE stupid batch of cleanup instructions at the end.
> >
> > Again, the lack of cleanup is from setting VL. MVL does not factor into
> > it, other than making it faster to set VL. Is this not so?
> >
> no.  MVL ensures that the regfile is not completely destroyed by over-runs
> of allocations determined by the compiler, statically, at compile-time.

Which you could ensure by writing a couple of insns to check what
you're setting VL to. Without needing MVL.

- Lauri

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