From: Ard Biesheuvel <ardb@kernel.org>
To: linux-crypto@vger.kernel.org
Cc: herbert@gondor.apana.org.au, Ard Biesheuvel <ardb@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Nathan Chancellor <nathan@kernel.org>
Subject: [PATCH 0/2] xor: enable auto-vectorization in Clang
Date: Thu, 27 Jan 2022 09:12:25 +0100 [thread overview]
Message-ID: <20220127081227.2430-1-ardb@kernel.org> (raw)
Update the xor_blocks() prototypes so that the compiler understands that
the inputs always refer to distinct regions of memory. This is implied
by the existing implementations, as they use different granularities for
the load/xor/store loops.
With that, we can fix the ARM/Clang version, which refuses to SIMD
vectorize otherwise, and throws a spurious warning related to the GCC
version being incompatible.
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Ard Biesheuvel (2):
lib/xor: make xor prototypes more friendely to compiler vectorization
crypto: arm/xor - make vectorized C code Clang-friendly
arch/alpha/include/asm/xor.h | 53 ++++++++----
arch/arm/include/asm/xor.h | 42 ++++++----
arch/arm/lib/xor-neon.c | 12 +--
arch/arm64/include/asm/xor.h | 21 +++--
arch/arm64/lib/xor-neon.c | 23 +++---
arch/ia64/include/asm/xor.h | 21 +++--
arch/powerpc/include/asm/xor_altivec.h | 25 +++---
arch/powerpc/lib/xor_vmx.h | 27 ++++---
arch/powerpc/lib/xor_vmx_glue.c | 32 ++++----
arch/s390/lib/xor.c | 21 +++--
arch/sparc/include/asm/xor_32.h | 21 +++--
arch/sparc/include/asm/xor_64.h | 42 ++++++----
arch/x86/include/asm/xor.h | 42 ++++++----
arch/x86/include/asm/xor_32.h | 42 ++++++----
arch/x86/include/asm/xor_avx.h | 21 +++--
include/asm-generic/xor.h | 84 +++++++++++++-------
include/linux/raid/xor.h | 21 +++--
17 files changed, 351 insertions(+), 199 deletions(-)
base-commit: e783362eb54cd99b2cac8b3a9aeac942e6f6ac07
--
2.30.2
next reply other threads:[~2022-01-27 8:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-27 8:12 Ard Biesheuvel [this message]
2022-01-27 8:12 ` [PATCH 1/2] lib/xor: make xor prototypes more friendely to compiler vectorization Ard Biesheuvel
2022-01-27 17:14 ` kernel test robot
2022-02-05 4:26 ` Herbert Xu
2022-01-27 8:12 ` [PATCH 2/2] crypto: arm/xor - make vectorized C code Clang-friendly Ard Biesheuvel
2022-01-27 21:36 ` [PATCH 0/2] xor: enable auto-vectorization in Clang Nathan Chancellor
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