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[Bug target/79127] [7 Regression] Error: invalid register for .seh_savexmm in matmul_i4.c


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79127

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Perhaps the HAVE_AVX512F configure test is too simple for the SEH purposes. 
I've tried:
        typedef double __m512d __attribute__ ((__vector_size__ (64)));
        typedef double __m256d __attribute__ ((__vector_size__ (32)));
        __m512d foo (__m512d, __m512d, __m512d, __m512d, __m512d, __m256d,
__m512d, __m512d);
        __m512d _mm512_add (__m512d a, __m256d c)
        {
          __m512d b =  __builtin_ia32_addpd512_mask (a, a, a, 1, 4);
          __m512d f =  __builtin_ia32_addpd512_mask (b, a, a, 1, 4);
          __m512d g =  __builtin_ia32_addpd512_mask (f, a, a, 1, 4);
          __m512d h =  __builtin_ia32_addpd512_mask (g, a, a, 1, 4);
          __m512d e = foo (b, a, b, a, b, c, b, b);
          return __builtin_ia32_addpd512_mask (b, e, a, 1, 4) + f + g + h;
        }
int
main ()
{

  ;
  return 0;
}

but that still doesn't generate any .seh_savexmm directives (at least not in my
cross-compiler).

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