[LLVMdev] [3.6 Release] RC1 has been tagged, Testing Phase I begins

[Hans Wennborg]

On Mon, Jan 26, 2015 at 5:41 AM, Renato Golin <renato.golin at linaro.org> wrote:
> On 21 January 2015 at 14:44, Renato Golin <renato.golin at linaro.org> wrote:
>> I'll bootstrap it with CMake and see what I get. Shouldn't we be
>> moving to CMake based release anyway?
>
> Hans,
>
> CODE RED for ARMv7...
>
> The buildbots are green on self-hosting because they're building with
> -mfpu=vfpv3 and not NEON. When I bootstrapped the release, I was using
> NEON and that's what killed it. We have a test-suite buildbot running
> with NEON, but that wasn't enough to pick up the regression, as it
> seemed only Clang was complex enough to show it.
>
> Result: we have a serious code-generation problem with NEON and I have
> no idea where it is... at least I know that it's after 3.5 and before
> 3.6 branch.
>
> I'll start a bissect between 3.5 and 3.6, but given that this is a
> self-hosting issue on an ARMv7 board, it could take days.
>
> I don't want to delay the release even further, and I believe none of
> the RC1 patches will make a difference, so Hans, please continue with
> RC2 and I'll pick it up when I finish. Hopefully, I'll find the bug
> before final.
>
> Fingers crossed...

Huge thanks for figuring this out!

You're not delaying the release. Like you said, I plan to continue
with RC2 to get testing for the stuff we've merged (probably sometime
this week), and then we can hopefully get this fixed, do an RC3 and
then ship :)

Thanks,
Hans