| Message ID | 20220205152346.237392-1-ardb@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | xor: enable auto-vectorization in Clang | expand |
On Sat, Feb 05, 2022 at 04:23:44PM +0100, Ard Biesheuvel wrote: > 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 v3: > - revert broken PPC argument rename - doing it fully results in too > much pointless churn, and the 'inner' altivec routines are not > strictly part of the xor_blocks API anyway > > Changes since v2: > - fix arm64 build after rebase > - name PPC argument names consistently > - add Nick's acks and link tags > > 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 friendly 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 | 46 +++++++---- > 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, 384 insertions(+), 217 deletions(-) All applied. Thanks.