[aarch64] Backport missing NEON intrinsics to GCC8

[Pop, Sebastian]

Thanks Christophe for reporting the errors.

On 9/16/20, 7:45 AM, "Kyrylo Tkachov" <Kyrylo.Tkachov@arm.com> wrote:
> > The new tests vld1x3 and vld1x4 fail on arm, I am seeing new failures
> > on gcc-8 and gcc-9 branches
> > after r8-10451, r8-10452 and r9-8874.
> > Is that expected/fixed later in the backport series?
> > (on the release branches, my validations are running for every commit)
>
> Hmm, IIRC they're not implemented for arm IIRC so they should be xfailed or skipped on arm.

When I look at the log for those files there are no additions.
Why does arm execute tests from gcc.target/aarch64/ on gcc9 and gcc8?
Why arm does not fail with those extra tests on gcc10 and on master?
I'm still trying to figure out how to properly fix this.

Thanks,
Sebastian