mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-20 08:45:46 +00:00
265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
19 lines
850 B
C
19 lines
850 B
C
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include <xmmintrin.h>
|
|
#include <emmintrin.h>
|
|
|
|
/* Before Nehalem _mm_loadu_si128 could be very slow, this trick is a little
|
|
* faster. Once enough people are on architectures where _mm_loadu_si128 is
|
|
* fast we can migrate to it.
|
|
*/
|
|
MOZ_ALWAYS_INLINE __m128i loadUnaligned128(const __m128i *aSource) {
|
|
// Yes! We use uninitialized memory here, we'll overwrite it though!
|
|
__m128 res = _mm_loadl_pi(_mm_set1_ps(0), (const __m64 *)aSource);
|
|
return _mm_castps_si128(_mm_loadh_pi(res, ((const __m64 *)(aSource)) + 1));
|
|
}
|