Messages in this thread | | | Date | Sat, 7 Nov 2020 10:22:03 +0000 | From | Russell King - ARM Linux admin <> | Subject | Re: [PATCH 2/2] arm: lib: xor-neon: disable clang vectorization |
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On Fri, Nov 06, 2020 at 07:14:36AM +0200, Adrian Ratiu wrote: > diff --git a/arch/arm/lib/xor-neon.c b/arch/arm/lib/xor-neon.c > index e1e76186ec23..84c91c48dfa2 100644 > --- a/arch/arm/lib/xor-neon.c > +++ b/arch/arm/lib/xor-neon.c > @@ -18,6 +18,10 @@ MODULE_LICENSE("GPL"); > * Pull in the reference implementations while instructing GCC (through > * -ftree-vectorize) to attempt to exploit implicit parallelism and emit > * NEON instructions. > +
Please tidy this up before submission; we normally continue the "*" for blank lines in comment blocks. Thanks.
> + * On Clang the loop vectorizer is enabled by default, but due to a bug > + * (https://bugs.llvm.org/show_bug.cgi?id=40976) vectorization is broke > + * so xor-neon is disabled in favor of the default reg implementations. > */ > #ifdef CONFIG_CC_IS_GCC > #pragma GCC optimize "tree-vectorize" > -- > 2.29.0 > >
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