[OE-core] [PATCH] gcc-6.3: Backport patch to fix ICE on ARM

[Andre McCurdy]

On Tue, Oct 10, 2017 at 12:04 PM, Khem Raj <raj.khem at gmail.com> wrote:
> On Tue, Oct 10, 2017 at 10:59 AM, Andre McCurdy <armccurdy at gmail.com> wrote:
>> On Sat, Oct 7, 2017 at 10:29 AM, Khem Raj <raj.khem at gmail.com> wrote:
>>> Fixes
>>> internal compiler error: Max. number of generated reload insns per insn is achieved (90)
>>
>> Is there a plan to update gcc 6.3 -> 6.4 in OE 2.5?
>
> actually, I was thinking of not touching 6.x at all since it solely
> for backward compatibility
> so upgrading it might cause issues for users

gcc 6.3 to 6.4 isn't really an upgrade in the sense of any new
features, it's just bug fixes, some of which look somewhat important:

  https://gcc.gnu.org/bugzilla/buglist.cgi?bug_status=RESOLVED&resolution=FIXED&target_milestone=6.4

Since gcc 6.x is now well into the maintenance phase, I'd be inclined
to think that the risk -vs- reward odds of taking these upstream fixes
is pretty good.

>, and since we do not test
> it actively, we would
> not know them. I would rather keep it to the version we have once
> tested but I am open
> to maintaining an upgraded version if community thinks that is
> beneficial for them. there
> wont be any testing on it in 2.5 release cycle,

Just having the upgrade available to the community is useful, even if
there are no guarantees or testing. I've backporting gcc 6.3 into my
morty branch as it fixes build issues with musl. Morty with gcc 6.3 is
not a combination which was ever officially supported or tested
upstream, but I very much appreciate the fact that upgrading gcc 6.2
to 6.3 in morty only requires a few cherry-picks :-)

>>
>>> Signed-off-by: Khem Raj <raj.khem at gmail.com>
>>> ---