mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-28 20:37:27 +00:00
01956597cb
Add a source file xor-neon.c (which is really just the reference C implementation passed through the GCC vectorizer) and hook it up to the XOR framework. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/*
|
|
* linux/arch/arm/lib/xor-neon.c
|
|
*
|
|
* Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/raid/xor.h>
|
|
|
|
#ifndef __ARM_NEON__
|
|
#error You should compile this file with '-mfloat-abi=softfp -mfpu=neon'
|
|
#endif
|
|
|
|
/*
|
|
* Pull in the reference implementations while instructing GCC (through
|
|
* -ftree-vectorize) to attempt to exploit implicit parallelism and emit
|
|
* NEON instructions.
|
|
*/
|
|
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
|
|
#pragma GCC optimize "tree-vectorize"
|
|
#else
|
|
/*
|
|
* While older versions of GCC do not generate incorrect code, they fail to
|
|
* recognize the parallel nature of these functions, and emit plain ARM code,
|
|
* which is known to be slower than the optimized ARM code in asm-arm/xor.h.
|
|
*/
|
|
#warning This code requires at least version 4.6 of GCC
|
|
#endif
|
|
|
|
#pragma GCC diagnostic ignored "-Wunused-variable"
|
|
#include <asm-generic/xor.h>
|
|
|
|
struct xor_block_template const xor_block_neon_inner = {
|
|
.name = "__inner_neon__",
|
|
.do_2 = xor_8regs_2,
|
|
.do_3 = xor_8regs_3,
|
|
.do_4 = xor_8regs_4,
|
|
.do_5 = xor_8regs_5,
|
|
};
|