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Unused variable in avx512fintrin.h


I'm looking at gcc/config/i386/avx512fintrin.h, and I see this:

extern __inline __m256i
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
_mm512_cvtsepi64_epi32 (__m512i __A)
{
  __v8si __O;
  return (__m256i) __builtin_ia32_pmovsqd512_mask ((__v8di) __A,
                           (__v8si)
                           _mm256_undefined_si256 (),
                           (__mmask8) -1);
}

Since r208793, __O appears to be unused?

For someone with checkin permissions (ie not me), removing this seems like an "as obvious."

dw


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