[Bug target/82370] AVX512 can use a memory operand for immediate-count vpsrlw, but gcc doesn't.

[peter at cordes dot ca]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82370

--- Comment #5 from Peter Cordes <peter at cordes dot ca> ---
I got off topic with this bug.  It was supposed to be about emitting

   vpsrlw  $8, (%rsi), %xmm1        # load folded into AVX512BW version

instead of

   vmovdqu64       (%rsi), %xmm0     # or VEX vmovdqu; that's where I got off
topic
   vpsrlw          $8, %xmm0, %xmm0