diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 36574564a0c..00f0274a018 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2016-07-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/71734
+	* g++.dg/vect/pr70729.cc: Don't include string.h or xmmintrin.h.
+	(my_alloc): Rewritten to use __builtin_posix_memalign and
+	__SIZE_TYPE__.
+	(my_free): Use __builtin_free instead of _mm_free.
+	(Vec::operator=): Use __builtin_memcpy.
+
 2016-07-19  Martin Jambor  <mjambor@suse.cz>
 
         PR fortran/71688
diff --git a/gcc/testsuite/g++.dg/vect/pr70729.cc b/gcc/testsuite/g++.dg/vect/pr70729.cc
index 014de8c1c47..ff868f7a41b 100644
--- a/gcc/testsuite/g++.dg/vect/pr70729.cc
+++ b/gcc/testsuite/g++.dg/vect/pr70729.cc
@@ -2,12 +2,8 @@
 // { dg-additional-options "-ffast-math -fopenmp-simd" }
 // { dg-additional-options "-msse2" { target x86_64-*-* i?86-*-* } }
 
-
-#include <string.h>
-#include <xmmintrin.h>
-
-inline void* my_alloc (size_t bytes) {return _mm_malloc (bytes, 128);}
-inline void my_free (void* memory) {_mm_free (memory);}
+inline void* my_alloc (__SIZE_TYPE__ bytes) {void *ptr; __builtin_posix_memalign (&ptr, bytes, 128);}
+inline void my_free (void* memory) {__builtin_free (memory);}
 
 template <typename T>
 class Vec
@@ -23,7 +19,7 @@ public:
   Vec& operator = (const Vec& other)	
     {
       if (this != &other)
-	memcpy (data, other.data, isize*sizeof (T));
+	__builtin_memcpy (data, other.data, isize*sizeof (T));
       return *this;
     }