[Bug target/104977] New: [avx512fp16] wrong code for vfmaddcsh when -masm=intel.

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104977

            Bug ID: 104977
           Summary: [avx512fp16] wrong code for vfmaddcsh when
                    -masm=intel.
           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: ---

#include<immintrin.h>

__m128h
foo (__m128h a, __m128h b, __m128h c, __mmask8 m)
{ 
    return _mm_fcmadd_round_sch (a, b, c, 8);
}

with asm=intel generates


_Z3fooDv8_DF16_S_S_h:
        vfcmaddcsh      xmm2, xmm0, xmm1<round_scalarcz_maskcz_mask_op4>
        vmovdqa xmm0, xmm2
        ret