OpenMP Patch Ping

[Tobias Burnus <tobias@codesourcery.com>]

Hi all, hello Jakub,

Below is the updated list to last ping,
https://gcc.gnu.org/pipermail/gcc-patches/2022-November/607178.html

NOTE to the list below: I have stopped checking older patches. I know
some more are pending review, others need to be revised. I will re-check,
once the below listed patches have been reviewed. Cf. old list.

Thanks for the reviews done in between the last ping and now!

  * * *

Small patches
=============

* [Patch] Fortran: Extend align-clause checks of OpenMP's allocate clause
   https://gcc.gnu.org/pipermail/gcc-patches/2022-December/608401.html
   Tue Dec 13 16:38:22 GMT 2022

* [Patch] OpenMP: Parse align clause in allocate directive in C/C++
   https://gcc.gnu.org/pipermail/gcc-patches/2022-December/608404.html
   Tue Dec 13 17:44:27 GMT 2022

* Re: [Patch] libgomp.texi: Reverse-offload updates (was: [Patch] libgomp: Handle OpenMP's reverse offloads)
   https://gcc.gnu.org/pipermail/gcc-patches/2022-December/608245.html
   Thu Nov 24 12:01:04 GMT 2022

(Side note: wwwdocs also needs to be updated for the latter patch and
some other patches done in the meanwhile.)


Fortran allocat(e,ors) prep patch
=================================

* [Patch] Fortran/OpenMP: Add parsing support for allocators/allocate directive (was: [Patch] Fortran/OpenMP: Add parsing support for allocators directive)
   https://gcc.gnu.org/pipermail/gcc-patches/2022-December/608904.html
   Wed Dec 21 15:51:25 GMT 2022

(Remark: While written from scratch, it is kind of a follow-up to Abid's patch
    [PATCH 1/5] [gfortran] Add parsing support for allocate directive (OpenMP 5.0)
you/Jakub reviewed on Tue Oct 11 12:13:14 GMT 2022, i.e.
  https://gcc.gnu.org/pipermail/gcc-patches/2022-October/603258.html
- For the actual implementation of 'allocators', we still have to solve the issues
   raised in the review for '[PATCH 2/5] [gfortran] Translate allocate directive (OpenMP 5.0).'.
   at https://gcc.gnu.org/pipermail/gcc-patches/2022-October/603279.html (and earlier in the thread);
   implementing 'omp allocate' (Fortran/C/C++) seems to be easier but no one has started implementing
   it so far - only parsing support exists.
- The USM patches on semi-USM system run into a similar issue as 'allocators' and for it, some
   ME omp_allocate is added.)


Mapping related patches
=======================
(Complex but GCC needs a revision badly as it fixing several bugs and missing functionality.)

* Complete patch set was just re-submitted by Julian, overiew patch is
   [PATCH v6 00/11] OpenMP: C/C++ lvalue parsing, C/C++/Fortran "declare mapper" support
   https://gcc.gnu.org/pipermail/gcc-patches/2022-December/thread.html#609031
   Fri Dec 23 12:12:53 GMT 2022
* Note: For 10/11 of the set, there was a follow up this Monday
   [PATCH v6 10/11] OpenMP: Support OpenMP 5.0 "declare mapper" directives for C
   https://gcc.gnu.org/pipermail/gcc-patches/2023-January/609566.html

[As it relates to one patch in the series:
   '[Patch] Fortran/OpenMP: Fix DT struct-component with 'alloc' and array descr'
That's mine, needs to be updated (WIP) and fixes array descriptor/alloc-string-length var
issues, where descriptor/string length may need to be handled explicitly on data entering map,
i.e. string lengths/allocator may require 'to:' instead of 'alloc:' - and on data exit mapping,
the current code might add a bogus 'alloc:'. - Idea is to handle this explicitly
in fortran/trans-openmp.cc instead of auto-adding it in the ME.
Status: WIP - removed in ME but not all cases are handled yet in FE.)


Fortran deep mapping (allocatable components)
====================
(Old patch of March 2022, but first part now properly but belated submitted - today):
[Patch][1/2] OpenMP: Add lang hooks + run-time filled map arrays for Fortran deep mapping of DT
https://gcc.gnu.org/pipermail/gcc-patches/2023-January/609637.html

Tobias

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