For what it's worth, I concur with Robin. Altfmt is just an encoding hack, a means to expand the effective opcode space. So, like the instruction opcode, it's associated with the operation, not with the arguments.
On Thu, Jul 9, 2026 at 2:39 AM Robin Dapp <[email protected]> wrote: > > I can't help but feel like I'm talking to an LLM here. > > You could use two unspecs, one for signed, one for unsigned. > > -- > Regards > Robin >
