diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2c8fc557f37..dba02c53cae 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2016-08-09  David Wohlferd  <dw@LimeGreenSocks.com>
+
+	* config/i3836/avx512fintrin.h (_mm512_cvtsepi64_epi32): Remove
+	unused variable __O.
+
 2016-08-09  Martin Liska  <mliska@suse.cz>
 
 	* doc/gcov.texi: Change _gcov_dump to __gcov_dump and
diff --git a/gcc/config/i386/avx512fintrin.h b/gcc/config/i386/avx512fintrin.h
index 2b30eae8ce0..c8a72991e05 100644
--- a/gcc/config/i386/avx512fintrin.h
+++ b/gcc/config/i386/avx512fintrin.h
@@ -4903,7 +4903,6 @@ 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 (),