[Bug target/104974] New: [avx512fp16] Error: operand type mismatch for `vmovw'

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104974

            Bug ID: 104974
           Summary: [avx512fp16]  Error: operand type mismatch for `vmovw'
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: crazylht at gmail dot com
  Target Milestone: ---

cat test.c

short
foo (short a)
{
  register short b __asm ("%xmm1") = a;
  asm volatile ("": "+v" (b));
  register short c __asm ("%xmm2") = b;
  asm volatile ("": "+v" (c));
  return a;
}

foo(short):
        mov     eax, edi
        vmovw   xmm1, edi
        vmovw   xmm2, xmm1 
        ret

To move HImode from sse reg to sse reg under avx512fp16, vmovsh should be used
instead of vmovw.