Revert "Add aligned_allocator"

This reverts commit 4cf3e89705.

cpu-opt/aligned_allocator.cpp

@@ -1,62 +0,0 @@
-#include <immintrin.h>
-#include <memory>
-
-template <class T, int N>
-class aligned_allocator
-{
-
-public:
-
-    typedef T value_type;
-    typedef T& reference;
-    typedef const T& const_reference;
-    typedef T* pointer;
-    typedef const T* const_pointer;
-    typedef size_t size_type;
-    typedef ptrdiff_t difference_type;
-
-    template <class U>
-        struct rebind
-        {
-            typedef aligned_allocator<U,N> other;
-        };
-
-    inline aligned_allocator() throw() {}
-    inline aligned_allocator(const aligned_allocator&) throw() {}
-
-    template <class U>
-        inline aligned_allocator(const aligned_allocator<U,N>&) throw() {}
-
-    inline ~aligned_allocator() throw() {}
-
-    inline pointer address(reference r) { return &r; }
-    inline const_pointer address(const_reference r) const { return &r; }
-
-    pointer allocate(size_type n, typename std::allocator<void>::const_pointer hint = 0);
-    inline void deallocate(pointer p, size_type);
-
-    inline void construct(pointer p, const_reference value) { new (p) value_type(value); }
-    inline void destroy(pointer p) { p->~value_type(); }
-
-    inline size_type max_size() const throw() { return size_type(-1) / sizeof(T); }
-
-    inline bool operator==(const aligned_allocator&) { return true; }
-    inline bool operator!=(const aligned_allocator& rhs) { return !operator==(rhs); }
-};
-
-
-template <class T, int N>
-typename aligned_allocator<T,N>::pointer
-aligned_allocator<T,N>::allocate(size_type n, typename std::allocator<void>::const_pointer) {
-    size_type alloc_size = ((sizeof(T)*(n-1))/N + 1)*N;
-    pointer res = reinterpret_cast<pointer>(_mm_malloc(alloc_size, N));
-    if (res == 0)
-        throw std::bad_alloc();
-    return res;
-}
-
-template <class T, int N>
-void
-aligned_allocator<T,N>::deallocate(pointer p, size_type) {
-    _mm_free(p);
-}