update to Vc 0.7.3-dev

[u/mrichter/AliRoot.git] / Vc / include / Vc / sse / helperimpl.tcc

/*  This file is part of the Vc library.

    Copyright (C) 2010-2012 Matthias Kretz <kretz@kde.org>

    Vc is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
    published by the Free Software Foundation, either version 3 of
    the License, or (at your option) any later version.

    Vc is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with Vc.  If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef VC_SSE_HELPERIMPL_TCC
#define VC_SSE_HELPERIMPL_TCC

#include <cstdio>

namespace AliRoot {
namespace Vc
{
namespace Internal
{

template<size_t X>
static _VC_CONSTEXPR size_t nextMultipleOf(size_t value)
{
    return (value % X) > 0 ? value + X - (value % X) : value;
}

template<Vc::MallocAlignment A>
Vc_ALWAYS_INLINE void *HelperImpl<SSE2Impl>::malloc(size_t n)
{
    switch (A) {
        case Vc::AlignOnVector:
            return _mm_malloc(nextMultipleOf<Vc::SSE::VectorAlignment>(n), Vc::SSE::VectorAlignment);
        case Vc::AlignOnCacheline:
            // TODO: hardcoding 64 is not such a great idea
            return _mm_malloc(nextMultipleOf<64>(n), 64);
        case Vc::AlignOnPage:
            // TODO: hardcoding 4096 is not such a great idea
            return _mm_malloc(nextMultipleOf<4096>(n), 4096);
        default:
#ifndef NDEBUG
            abort();
#endif
            return _mm_malloc(n, 8);
    }
}

Vc_ALWAYS_INLINE void HelperImpl<SSE2Impl>::free(void *p)
{
    _mm_free(p);
}

} // namespace Internal
} // namespace Vc
} // namespace AliRoot

#endif // VC_SSE_HELPERIMPL_TCC