https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103416
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[12 Regression][OpenMP] |[OpenMP] Double mapping via
|Bogus firstprivate(n) |firstprivate(n) map(to:n
|map(to:n [len: |[len: 4][implicit])
|4][implicit]) |
Keywords|wrong-code |missed-optimization
--- Comment #6 from Tobias Burnus <burnus at gcc dot gnu.org> ---
I changed the bug subject as the "12 Regression" issue has been fixed (cf.
below,
committed with reference to PR90030 not to this PR) – but the code-improvement
part still remains to be done.
* * *
(In reply to Chung-Lin Tang from comment #1)
> Can you see if adding this patch:
> https://gcc.gnu.org/pipermail/gcc-patches/2021-November/583279.html
> fixes this problem? If so, then it should be another occurrence of PR90030
This patch is now committed:
commit r12-5706-g1ac7a8c9e4798d352eb8c64905dd38086af4e1cd
Author: Chung-Lin Tang <clt...@codesourcery.com>
Date: Thu Dec 2 18:24:03 2021 +0800
fortran: OpenMP/OpenACC array mapping alignment fix (PR90030)
* * *
TODO: LOOP VAR double mapping – cf. PR80330, i.e.
map(to:D.4217 [len: 4][implicit]) map(tofrom:n [len: 4][implicit])
where the loop variable is mapped twice.
See Comment 4 for what remains to be done and a draft patch.
