diff options
Diffstat (limited to 'arch/arm/lib/xor-neon.c')
| -rw-r--r-- | arch/arm/lib/xor-neon.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/arm/lib/xor-neon.c b/arch/arm/lib/xor-neon.c index b99dd8e1c93f..cf57fca97908 100644 --- a/arch/arm/lib/xor-neon.c +++ b/arch/arm/lib/xor-neon.c @@ -8,6 +8,7 @@ #include <linux/raid/xor.h> #include <linux/module.h> +MODULE_DESCRIPTION("NEON accelerated XOR implementation"); MODULE_LICENSE("GPL"); #ifndef __ARM_NEON__ @@ -17,17 +18,11 @@ MODULE_LICENSE("GPL"); /* * Pull in the reference implementations while instructing GCC (through * -ftree-vectorize) to attempt to exploit implicit parallelism and emit - * NEON instructions. + * NEON instructions. Clang does this by default at O2 so no pragma is + * needed. */ -#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) +#ifdef CONFIG_CC_IS_GCC #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" |