[Bug target/111350] gcc.target/i386/avx512fp16-vfcmulcph-1b.c and friends fail on x86_64-apple-darwin21

["iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111350

Iain Sandoe <iains at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-09-09

--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #6)
> (In reply to Iain Sandoe from comment #5)
> > (In reply to Iain Sandoe from comment #4)
> > > (In reply to Francois-Xavier Coudert from comment #3)
> > > > Clang: 14.0.0 build 1400
> > > > CLT: 14.2.0.0.1.1668646533

> maybe something like this (untested because 15b7 is only supported on
> macOS13 and my avx512 box has an earlier install)
> 
> diff --git a/gcc/testsuite/lib/target-supports.exp
> b/gcc/testsuite/lib/target-supports.exp
> index 0ea8bcb24e1..2d74f62e887 100644
> --- a/gcc/testsuite/lib/target-supports.exp
> +++ b/gcc/testsuite/lib/target-supports.exp
> @@ -9776,6 +9776,7 @@ proc check_effective_target_avx512fp16 { } {
>         void foo (void)
>         {
>           asm volatile ("vmovw %edi, %xmm0");
> +         asm volatile ("vfcmulcph %xmm1, %xmm2, %xmm3");
>         }
>      } "-O2 -mavx512fp16" ]
>  }

hmm not enough it needs:
+         asm volatile ("vfcmulcph %xmm1, %xmm2, %xmm3{%k1}");
to fail on XC14 and pass on XC15