diff --git a/clang/lib/Headers/avx512fintrin.h b/clang/lib/Headers/avx512fintrin.h
index 49d047c92076..2395233d252a 100644
--- a/clang/lib/Headers/avx512fintrin.h
+++ b/clang/lib/Headers/avx512fintrin.h
@@ -7502,7 +7502,6 @@ _mm512_mask_cvtsepi64_storeu_epi8 (void * __P, __mmask8 __M, __m512i __A)
 static __inline__ __m256i __DEFAULT_FN_ATTRS
 _mm512_cvtsepi64_epi32 (__m512i __A)
 {
-  __v8si __O;
   return (__m256i) __builtin_ia32_pmovsqd512_mask ((__v8di) __A,
                (__v8si) _mm256_undefined_si256 (),
                (__mmask8) -1);