Commit Graph

6 Commits

Author SHA1 Message Date
Johannes Doerfert fa5d22a045 [OpenMP][NFC] Reuse OMPIRBuilder `struct ident_t` handling in Clang
Replace the `ident_t` handling in Clang with the methods offered by the
OMPIRBuilder. This cuts down on the clang code as well as the
differences between the two, making further transitions easier. Tests
have changed but there should not be a real functional change. The most
interesting difference is probably that we stop generating local ident_t
allocations for now and just use globals. Given that this happens only
with debug info, the location part of the `ident_t` is probably bigger
than the test anyway. As the location part is already a global, we can
avoid the allocation, memcpy, and store in favor of a constant global
that is slightly bigger. This can be revisited if there are
complications.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D80735
2020-08-10 17:13:26 -05:00
Alexey Bataev 08029595ca [OPENMP]Fix overflow during counting the number of iterations.
Summary:
The OpenMP loops are normalized and transformed into the loops from 0 to
max number of iterations. In some cases, original scheme may lead to
overflow during calculation of number of iterations. If it is unknown,
if we can end up with overflow or not (the bounds are not constant and
  we cannot define if there is an overflow), cast original type to the
  unsigned.

Reviewers: jdoerfert

Subscribers: yaxunl, guansong, sstefan1, openmp-commits, cfe-commits, caomhin

Tags: #clang, #openmp

Differential Revision: https://reviews.llvm.org/D81881
2020-06-17 08:47:01 -04:00
Alexey Bataev e9bfa1dd38 [OPENMP]Use new interface for task reduction.
Summary:
Patch forces codegen to use the new runtime functions for task reductions where
the issue with passing the address of the original variables to the UDR
initializers is fixed. Also, this patch is required for upcoming
support of task modifier inreduction clause.

Reviewers: jdoerfert

Subscribers: yaxunl, guansong, cfe-commits, caomhin

Tags: #clang

Differential Revision: https://reviews.llvm.org/D78733
2020-04-24 09:41:48 -04:00
Alexey Bataev b3998a0edb [OPENMP]Fix PR45047: Do not copy firstprivates in tasks twice.
Avoid copying of the orignal variable if it is going to be marked as
firstprivate in task regions. For taskloops, still need to copy the
non-trvially copyable variables to correctly construct them upon task
creation.
2020-03-13 18:04:16 -04:00
Alexey Bataev 8be5a0fe12 [OPENMP]Emit artificial threprivate vars as threadlocal, if possible.
It may improve performance for declare reduction constructs.
2019-12-31 14:11:36 -05:00
Alexey Bataev 5bbceadfc8 [OPENMP50]Add support for 'parallel master taskloop' construct.
Added parsing/sema/codegen support for 'parallel master taskloop'
constructs. Some of the clauses, like 'grainsize', 'num_tasks', 'final'
and 'priority' are not supported in full, only constant expressions can
be used currently in these clauses.

llvm-svn: 374791
2019-10-14 17:17:41 +00:00