glibc/sysdeps/x86_64/multiarch/varshift.h

31 lines
1.1 KiB
C

/* Helper for variable shifts of SSE registers.
Copyright (C) 2010-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library 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 2.1 of the License, or (at your option) any later version.
The GNU C Library 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 the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stdint.h>
#include <tmmintrin.h>
extern const int8_t ___m128i_shift_right[31] attribute_hidden;
static __inline__ __m128i
__m128i_shift_right (__m128i value, unsigned long int offset)
{
return _mm_shuffle_epi8 (value,
_mm_loadu_si128 ((__m128i *) (___m128i_shift_right
+ offset)));
}