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 v2 0/2] xor: enable auto-vectorization in Clang
Date: Sat, 29 Jan 2022 23:45:27 +0100 [thread overview]
Message-ID: <20220129224529.76887-1-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.
Changes since v1:
- fix PPC build
- add Nathan's Tested-by
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.c | 28 ++++---
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 +++--
18 files changed, 369 insertions(+), 209 deletions(-)
--
2.30.2
next reply other threads:[~2022-01-29 22:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-29 22:45 Ard Biesheuvel [this message]
2022-01-29 22:45 ` [PATCH v2 1/2] lib/xor: make xor prototypes more friendely to compiler vectorization Ard Biesheuvel
2022-01-31 18:13 ` Nick Desaulniers
2022-01-31 18:17 ` Nick Desaulniers
2022-02-05 4:33 ` Herbert Xu
2022-02-05 7:56 ` Ard Biesheuvel
2022-01-29 22:45 ` [PATCH v2 2/2] crypto: arm/xor - make vectorized C code Clang-friendly Ard Biesheuvel
2022-01-31 18:16 ` Nick Desaulniers
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