On Sat, 07 Nov 2020, Russell King - ARM Linux admin
<li...@armlinux.org.uk> wrote:
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.
Indeed, thank you. I will fix it if I don't replace this patch
entirely with something similar to what Nick suggested.
Perhaps adding a checkpatch test for this is a good idea?
Adrian
+ * 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
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!