Re: [PATCH] target/i386: use host SSE2 for pack and unpack

[Paolo Bonzini]

On 10/28/26 19:36, Gareth Lloyd wrote:
These helpers move bytes rather than interpret them, so a host SSE2
instruction gives bit-exact results and needs no gate on the float
environment. A host without the routines keeps the portable loops.
tests/tcg/i386/test-avx.c and test-mmx.c already cover these
instructions.
It would be useful to see it also for another host.

Also, have you checked if compiler vectorization can produce PACK/UNPACK 
instructions?

Thanks,

Paolo