Re: [PATCH] ARM: xor-neon: Replace __GNUC__ checks with CONFIG_CC_IS_GCC

From: Nick Desaulniers
Date: Fri May 31 2019 - 16:10:09 EST


On Fri, May 31, 2019 at 12:21 PM Arnd Bergmann <arnd@xxxxxxxx> wrote:
> clang, I would suggest dropping your patch then, and instead adding

I disagree. The minimum version of gcc required to build the kernel
is 4.6, so the comment about older versions of gcc is irrelevant and
should be removed.

Nathan's -Rpass warnings are warning that vectorization was not
calculated to be profitable **for 1 of the 4 functions** by LLVM.
Surely we wouldn't disable NEON opts for XOR because 1 of 4 was not
vectorized?

--
Thanks,
~Nick Desaulniers