no bug - Bumping Firefox l10n changesets r=release a=l10n-bump DONTBUILD CLOSED TREE
[gecko.git] / gfx / 2d / SSEHelpers.h
blob1b32024009600a7b184518ddd6f19acd44f8e7f3
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include <xmmintrin.h>
8 #include <emmintrin.h>
10 /* Before Nehalem _mm_loadu_si128 could be very slow, this trick is a little
11 * faster. Once enough people are on architectures where _mm_loadu_si128 is
12 * fast we can migrate to it.
14 MOZ_ALWAYS_INLINE __m128i loadUnaligned128(const __m128i* aSource) {
15 // Yes! We use uninitialized memory here, we'll overwrite it though!
16 __m128 res = _mm_loadl_pi(_mm_set1_ps(0), (const __m64*)aSource);
17 return _mm_castps_si128(_mm_loadh_pi(res, ((const __m64*)(aSource)) + 1));