llvm dev - Feb 2020 - IBM C/C++ and Fortran compilers to adopt LLVM open source infrastructure

<div class="socmaildefaultfont" dir="ltr"
style="font-family:Arial, Helvetica, sans-serif;font-size:9pt"
><div dir="ltr" >Hi all,</div>
<div dir="ltr" >I'm very excited to be able to share this
with everyone. </div>
<div dir="ltr" > </div>
<div dir="ltr" >IBM announced this morning our intention to
migrate our existing XL C/C++ and Fortran compilers to adopt the LLVM
infrastructure. This will include both front-end (Clang) and back-end
optimizations and code generation.</div>
<div dir="ltr" > </div>
<div dir="ltr" >You can read the full announcement
here:</div>
<div dir="ltr" ><a
href="https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/"
>https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/</a></div>
<div dir="ltr" > </div>
<div dir="ltr" >If anyone has any questions/comments, I'm
very happy to discuss further - either through email or on discord (my presence
on IRC is very intermittent). </div>
<div dir="ltr" > </div>
<div dir="ltr" ><div class="socmaildefaultfont"
dir="ltr" style="font-family:Arial, Helvetica,
sans-serif;font-size:10.5pt" ><div
class="socmaildefaultfont" dir="ltr"
style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt"
><div class="socmaildefaultfont" dir="ltr"
style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt"
><div class="socmaildefaultfont" dir="ltr"
style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt"
><div dir="ltr" ><font
face="Verdana,Arial,Helvetica,sans-serif" size="2"
><font face="Verdana,Arial,Helvetica,sans-serif"
size="2" ><span
style="font-family:Arial,Helvetica,sans-serif;" ><font
size="2" ><span style="font-size:0.857em;" >Kit
Barton, Ph.D.<br>STSM, Technical lead for LLVM on Power and XL
Compilers<br>IBM Toronto Lab, C2/705/8200/MKM<br>8200 Warden Ave,
Markham, L6G 1C7<br>(905)
413-3452<br>kbarton@ca.ibm.com</span></font></span></font></font></div></div></div></div></div></div></div><BR>

Do you guys intend to upstream more work?

If so can you share a plan?

Congrats!

Em seg, 24 de fev de 2020 16:49, Kit Barton via llvm-dev <
llvm-dev at lists.llvm.org> escreveu:
> Hi all,
> I'm very excited to be able to share this with everyone.
>
> IBM announced this morning our intention to migrate our existing XL C/C++
> and Fortran compilers to adopt the LLVM infrastructure. This will include
> both front-end (Clang) and back-end optimizations and code generation.
>
> You can read the full announcement here:
>
>
https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/
>
> If anyone has any questions/comments, I'm very happy to discuss further
-
> either through email or on discord (my presence on IRC is very
> intermittent).
>
> Kit Barton, Ph.D.
> STSM, Technical lead for LLVM on Power and XL Compilers
> IBM Toronto Lab, C2/705/8200/MKM
> 8200 Warden Ave, Markham, L6G 1C7
> (905) 413-3452
> kbarton at ca.ibm.com
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20200225/0732de29/attachment.html>

Hi Kit.  I'm curious about the support for Clang on z/OS and, in particular,
support for EBCDIC based source files and run-time interaction with the OS. 
Would you be able to describe what features IBM has added (or will be adding)
along those lines?  Will the z/OS enhanced ASCII
functionality<https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.bpxb200/uenha.htm>
be supported?  How about xlC's enhanced
ASCII<https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.cbcux01/ascii.htm>
support?  Or #pragma
filetag<https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.cbcpx01/fltg.htm>?
Or #pragma
convlit<https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.cbcux01/convlit.htm>?
Does IBM plan to contribute changes for these features back to the community?

This sounds like a positive direction!

Tom.

(apologies if this message is received twice, my mail client is acting up).

From: llvm-dev <llvm-dev-bounces at lists.llvm.org> On Behalf Of Kit
Barton via llvm-dev
Sent: Monday, February 24, 2020 1:44 PM
To: llvm-dev at lists.llvm.org
Subject: [llvm-dev] IBM C/C++ and Fortran compilers to adopt LLVM open source
infrastructure

Hi all,
I'm very excited to be able to share this with everyone.

IBM announced this morning our intention to migrate our existing XL C/C++ and
Fortran compilers to adopt the LLVM infrastructure. This will include both
front-end (Clang) and back-end optimizations and code generation.

You can read the full announcement here:
https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/<https://urldefense.proofpoint.com/v2/url?u=https-3A__developer.ibm.com_linuxonpower_2020_02_23_ibm-2Dc-2Dc-2Dand-2Dfortran-2Dcompilers-2Dto-2Dadopt-2Dllvm-2Dopen-2Dsource-2Dinfrastructure_&d=DwMFaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=oOJsFtgkFCCcDlfLWKmfrVDtpXLihXJTBGJfSapXCV0&m=tZKprmffzEkUM3gcP4LTvyihX_fLGH0hYTjj65EDfic&s=sJ3t-OgKvWIK4EtJUgDahDtw8bS0vXa8oxlPXMQ-X-c&e=>

If anyone has any questions/comments, I'm very happy to discuss further -
either through email or on discord (my presence on IRC is very intermittent).

Kit Barton, Ph.D.
STSM, Technical lead for LLVM on Power and XL Compilers
IBM Toronto Lab, C2/705/8200/MKM
8200 Warden Ave, Markham, L6G 1C7
(905) 413-3452
kbarton at ca.ibm.com<mailto:kbarton at ca.ibm.com>

-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20200225/904ce3fe/attachment.html>

Hi André,
We've been actively upstreaming work for the past several years, and have
definitely increased that in the last year.
We do have work out of tree that we are working on cleaning up and posting
for review, mostly for z/OS. We have not issued an RFC for this
 yet, as we are currently focused on some internal deadlines, but hope to
begin this soon.

Thanks,

Kit

On Tue, Feb 25, 2020 at 10:49 AM André Jansen Medeiros Villar via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Do you guys intend to upstream more work?
>
> If so can you share a plan?
>
> Congrats!
>
> Em seg, 24 de fev de 2020 16:49, Kit Barton via llvm-dev <
> llvm-dev at lists.llvm.org> escreveu:
>
>> Hi all,
>> I'm very excited to be able to share this with everyone.
>>
>> IBM announced this morning our intention to migrate our existing XL
C/C++
>> and Fortran compilers to adopt the LLVM infrastructure. This will
include
>> both front-end (Clang) and back-end optimizations and code generation.
>>
>> You can read the full announcement here:
>>
>>
https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/
>>
>> If anyone has any questions/comments, I'm very happy to discuss
further -
>> either through email or on discord (my presence on IRC is very
>> intermittent).
>>
>> Kit Barton, Ph.D.
>> STSM, Technical lead for LLVM on Power and XL Compilers
>> IBM Toronto Lab, C2/705/8200/MKM
>> 8200 Warden Ave, Markham, L6G 1C7
>> (905) 413-3452
>> kbarton at ca.ibm.com
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20200225/2ff76431/attachment-0001.html>

Hi Tom,
To be perfectly honest with you, you're getting into some of the details
that we're in the process of working out. In general, we intend to support
compiling source files in different code pages and allow users to create
ASCII and EBCDIC programs with string/char literals in multiple code pages.

To answer your specific questions, our current clang-based compilers do not
support #pragma filetag or #pragma convlit. We do however have support for
#pragma convert.

Our intention is to commit all of this upstream, subject of course to
discussion and review with the community.

We'll be sending an RFC to the dev lists when we are ready to start
upstreaming our work. That RFC can include some more details about some of
these features.

Thanks,

Kit

On Tue, Feb 25, 2020 at 11:29 AM Tom Honermann via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi Kit.  I'm curious about the support for Clang on z/OS and, in
> particular, support for EBCDIC based source files and run-time interaction
> with the OS.  Would you be able to describe what features IBM has added (or
> will be adding) along those lines?  Will the z/OS enhanced ASCII
> functionality
>
<https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.bpxb200/uenha.htm>
> be supported?  How about xlC's enhanced ASCII
>
<https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.cbcux01/ascii.htm>
> support?  Or #pragma filetag
>
<https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.cbcpx01/fltg.htm>?
> Or #pragma convlit
>
<https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.cbcux01/convlit.htm>?
> Does IBM plan to contribute changes for these features back to the
> community?
>
>
>
> This sounds like a positive direction!
>
>
>
> Tom.
>
>
>
> (apologies if this message is received twice, my mail client is acting up).
>
>
>
> *From:* llvm-dev <llvm-dev-bounces at lists.llvm.org> *On Behalf Of
*Kit
> Barton via llvm-dev
> *Sent:* Monday, February 24, 2020 1:44 PM
> *To:* llvm-dev at lists.llvm.org
> *Subject:* [llvm-dev] IBM C/C++ and Fortran compilers to adopt LLVM open
> source infrastructure
>
>
>
> Hi all,
>
> I'm very excited to be able to share this with everyone.
>
>
>
> IBM announced this morning our intention to migrate our existing XL C/C++
> and Fortran compilers to adopt the LLVM infrastructure. This will include
> both front-end (Clang) and back-end optimizations and code generation.
>
>
>
> You can read the full announcement here:
>
>
>
https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/
>
<https://urldefense.proofpoint.com/v2/url?u=https-3A__developer.ibm.com_linuxonpower_2020_02_23_ibm-2Dc-2Dc-2Dand-2Dfortran-2Dcompilers-2Dto-2Dadopt-2Dllvm-2Dopen-2Dsource-2Dinfrastructure_&d=DwMFaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=oOJsFtgkFCCcDlfLWKmfrVDtpXLihXJTBGJfSapXCV0&m=tZKprmffzEkUM3gcP4LTvyihX_fLGH0hYTjj65EDfic&s=sJ3t-OgKvWIK4EtJUgDahDtw8bS0vXa8oxlPXMQ-X-c&e=>
>
>
>
> If anyone has any questions/comments, I'm very happy to discuss further
-
> either through email or on discord (my presence on IRC is very
> intermittent).
>
>
>
> Kit Barton, Ph.D.
> STSM, Technical lead for LLVM on Power and XL Compilers
> IBM Toronto Lab, C2/705/8200/MKM
> 8200 Warden Ave, Markham, L6G 1C7
> (905) 413-3452
> kbarton at ca.ibm.com
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20200225/51972b04/attachment-0001.html>

This is really exciting Kit, congratulations to you and your whole team!  I know
this has been a long journey,

-Chris
> On Feb 24, 2020, at 10:43 AM, Kit Barton via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> Hi all,
> I'm very excited to be able to share this with everyone. 
>  
> IBM announced this morning our intention to migrate our existing XL C/C++
and Fortran compilers to adopt the LLVM infrastructure. This will include both
front-end (Clang) and back-end optimizations and code generation.
>  
> You can read the full announcement here:
>
https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/
<https://developer.ibm.com/linuxonpower/2020/02/23/ibm-c-c-and-fortran-compilers-to-adopt-llvm-open-source-infrastructure/>
>  
> If anyone has any questions/comments, I'm very happy to discuss further
- either through email or on discord (my presence on IRC is very intermittent).
>  
> Kit Barton, Ph.D.
> STSM, Technical lead for LLVM on Power and XL Compilers
> IBM Toronto Lab, C2/705/8200/MKM
> 8200 Warden Ave, Markham, L6G 1C7
> (905) 413-3452
> kbarton at ca.ibm.com
> 
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20200227/5f4c5bfc/attachment.html>