[Libre-soc-dev] new svp64 page

[Lauri Kasanen]

On Fri, 11 Dec 2020 18:58:51 +0000
Luke Kenneth Casson Leighton <lkcl at lkcl.net> wrote:

> ok, so this example is why i asked.  2 bits, signed-unsigned, is not
> enough.  hence the addition of two *more* bits specifying the
> saturation quantity: 2^8, 2^16, 2^32.

Actually, arbitrary selection is not needed. It's either "src width" or
"one smaller". 32 to 32 or 32 to 16, never 32 to 8. (it's very rare to
drop two sizes, that can have the extra mv)

But this is a tangent, only if we can't take it from the dest elwidth.

- Lauri