Commit Graph

5 Commits

Author SHA1 Message Date
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 60e51c4803 [OPENMP50]Support for 'master taskloop' directive.
Added full support for master taskloop directive.

llvm-svn: 374437
2019-10-10 20:13:02 +00:00