mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-30 08:23:01 +00:00
99 lines
3.5 KiB
C
99 lines
3.5 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2003, 2007-14 Matteo Frigo
|
||
|
|
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program 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 General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* detection of alignment. This is complicated because a machine may
|
||
|
|
support multiple SIMD extensions (e.g. SSE2 and AVX) but only one
|
||
|
|
set of alignment contraints. So this alignment stuff cannot be
|
||
|
|
defined in the SIMD header files. Rather than defining a separate
|
||
|
|
set of "machine" header files, we just do this ugly ifdef here. */
|
||
|
|
#if defined(HAVE_SSE2) || defined(HAVE_AVX) || defined(HAVE_AVX2) || defined(HAVE_AVX_128_FMA) || defined(HAVE_AVX512)
|
||
|
|
# if defined(FFTW_SINGLE)
|
||
|
|
# define ALIGNMENT 8 /* Alignment for the LD/ST macros */
|
||
|
|
# define ALIGNMENTA 16 /* Alignment for the LDA/STA macros */
|
||
|
|
# else
|
||
|
|
# define ALIGNMENT 16 /* Alignment for the LD/ST macros */
|
||
|
|
# define ALIGNMENTA 16 /* Alignment for the LDA/STA macros */
|
||
|
|
# endif
|
||
|
|
#elif defined(HAVE_ALTIVEC)
|
||
|
|
# define ALIGNMENT 8 /* Alignment for the LD/ST macros */
|
||
|
|
# define ALIGNMENTA 16 /* Alignment for the LDA/STA macros */
|
||
|
|
#elif defined(HAVE_NEON) || defined(HAVE_VSX)
|
||
|
|
# define ALIGNMENT 8 /* Alignment for the LD/ST macros */
|
||
|
|
# define ALIGNMENTA 8 /* Alignment for the LDA/STA macros */
|
||
|
|
#elif defined(HAVE_KCVI)
|
||
|
|
# if defined(FFTW_SINGLE)
|
||
|
|
# define ALIGNMENT 8 /* Alignment for the LD/ST macros */
|
||
|
|
# else
|
||
|
|
# define ALIGNMENT 16 /* Alignment for the LD/ST macros */
|
||
|
|
# endif
|
||
|
|
# define ALIGNMENTA 64 /* Alignment for the LDA/STA macros */
|
||
|
|
#elif defined(HAVE_GENERIC_SIMD256)
|
||
|
|
# if defined(FFTW_SINGLE)
|
||
|
|
# define ALIGNMENT 8
|
||
|
|
# define ALIGNMENTA 32
|
||
|
|
# else
|
||
|
|
# define ALIGNMENT 16
|
||
|
|
# define ALIGNMENTA 32
|
||
|
|
# endif
|
||
|
|
#elif defined(HAVE_GENERIC_SIMD128)
|
||
|
|
# if defined(FFTW_SINGLE)
|
||
|
|
# define ALIGNMENT 8
|
||
|
|
# define ALIGNMENTA 16
|
||
|
|
# else
|
||
|
|
# define ALIGNMENT 16
|
||
|
|
# define ALIGNMENTA 16
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if HAVE_SIMD
|
||
|
|
# ifndef ALIGNMENT
|
||
|
|
# error "ALIGNMENT not defined"
|
||
|
|
# endif
|
||
|
|
# ifndef ALIGNMENTA
|
||
|
|
# error "ALIGNMENTA not defined"
|
||
|
|
# endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* rename for precision and for SIMD extensions */
|
||
|
|
#define XSIMD0(name, suffix) CONCAT(name, suffix)
|
||
|
|
#define XSIMD(name) XSIMD0(X(name), SIMD_SUFFIX)
|
||
|
|
#define XSIMD_STRING(x) x STRINGIZE(SIMD_SUFFIX)
|
||
|
|
|
||
|
|
/* TAINT_BIT is set if pointers are not guaranteed to be multiples of
|
||
|
|
ALIGNMENT */
|
||
|
|
#define TAINT_BIT 1
|
||
|
|
|
||
|
|
/* TAINT_BITA is set if pointers are not guaranteed to be multiples of
|
||
|
|
ALIGNMENTA */
|
||
|
|
#define TAINT_BITA 2
|
||
|
|
|
||
|
|
#define PTRINT(p) ((uintptr_t)(p))
|
||
|
|
|
||
|
|
#define ALIGNED(p) \
|
||
|
|
(((PTRINT(UNTAINT(p)) % ALIGNMENT) == 0) && !(PTRINT(p) & TAINT_BIT))
|
||
|
|
|
||
|
|
#define ALIGNEDA(p) \
|
||
|
|
(((PTRINT(UNTAINT(p)) % ALIGNMENTA) == 0) && !(PTRINT(p) & TAINT_BITA))
|
||
|
|
|
||
|
|
#define SIMD_STRIDE_OK(x) (!(((x) * sizeof(R)) % ALIGNMENT))
|
||
|
|
#define SIMD_STRIDE_OKA(x) (!(((x) * sizeof(R)) % ALIGNMENTA))
|
||
|
|
#define SIMD_VSTRIDE_OK SIMD_STRIDE_OK
|
||
|
|
|