Fw: C++11/C++14 support in XLC ?

[Volker Simonis]

Hi Jeff,

thanks a lot for providing the new link. As mentioned earlier in this
thread, one of the main interests of the OpenJDK project in the C++11
features is for the new atomic/concurrency features. Unfortunately, as
per your list, they don't seem to be supported at all on AIX and
there's also no information on when they will be supported (if at
all).

It would be great if you could keep us posted once new features will
become available.

Regards,
Volker


On Thu, Jun 29, 2017 at 11:17 PM, Jeff Heath <jrheath at ca.ibm.com> wrote:
> Hi all,
>
> On the LE Linux platform, XL C/C++ V13.1.5 has full support of C++11 and
> partial support of C++14.  On AIX, XL C/C++ V13.1.3 has partial support of
> C++11.  The exact feature list is described in the language reference, but
> is available in a more consumable form here [1]. This is still a pretty
> current list.
>
> [1]
> https://www.ibm.com/developerworks/community/blogs/5894415f-be62-4bc0-81c5-3956e82276f3/entry/What_new_C_11_language_features_you_will_get_by_using_the_latest_XL_C_C_V13_1_2_and_a_sneak_peak_at_C_14?lang=en
>
> Regards,
>
> Jeff
>
>
> -------- Forwarded Message --------
> Subject: C++11/C++14 support in XLC ?
> Date: Fri, 23 Jun 2017 09:14:09 +0200
> From: Volker Simonis <volker.simonis at gmail.com>
> To: ppc-aix-port-dev at openjdk.java.net <ppc-aix-port-dev at openjdk.java.net>
> CC: Kim Barrett <kim.barrett at oracle.com>
>
> Hi everybody,
>
> Kim recently approached me with some questions regarding the amount
> and quality of C++11/C++14 support in XLC (see his mail below). As he
> found out, it seems that there's unfortunately not much of even C++11
> support in recent XLC compilers [1,2].
>
> I think, one of the features most badly needed is the support for
> atomics operations library [3] which was introduced with C++11. A
> recent hotspot mail thread [4,5] may give an impression why the
> atomics library is need (but obviously only makes sense if it is
> high-quality, bullet-proof on all supported platforms)
>
> I would be great if somebody from the IBM folks on this list could
> provide some more detailed information on the current state of the
> C++11/C++14/C++XX support in XLC and the future plans if possible.
>
> Thank you and best regards,
> Volker
>
>
> ---------- Forwarded message ----------
> From: Kim Barrett <kim.barrett at oracle.com>
> Date: Wed, Jun 21, 2017 at 6:23 AM
> Subject: c++11 ?
> To: Volker Simonis <volker.simonis at gmail.com>
>
> Hi Volker,
>
> There's been a lot of internal discussion here at Oracle about
> possibly updating compilers and starting to use C++11 or even C++14
> features, for JDK10 or beyond.  Until recently I thought C++11 was
> practical, just a matter of doing the work.  This was based in part on
> information I'd seen about XLC++ supporting C++11.  However, I
> recently found documentation [1] [2] indicating that's only true for
> the Linux port, and that even the latest version of the AIX port is
> seriously laggard, only providing a few specific C++11 features.  If
> that's accurate, that's very disappointing. I was wondering if you or
> your group might have any additional information or thoughts?
>
> [1] https://www-03.ibm.com/software/products/en/xlcpp-aix
> [2] https://www-01.ibm.com/support/docview.wss?uid=swg27047114
> [3] http://en.cppreference.com/w/cpp/atomic
> [4]
> http://mail.openjdk.java.net/pipermail/jdk10-dev/2017-May/thread.html#224
> [5]
> http://mail.openjdk.java.net/pipermail/jdk10-dev/2017-June/thread.html#268
>