[Openmp-commits] [PATCH] D112015: [OpenMP] libomp: add check of task function pointer for NULL

[Andrey Churbanov via Phabricator via Openmp-commits]

AndreyChurbanov created this revision.
AndreyChurbanov added reviewers: hbae, jlpeyton, tlwilmar, Nawrin.
AndreyChurbanov added a project: OpenMP.
Herald added subscribers: guansong, yaxunl.
AndreyChurbanov requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added subscribers: openmp-commits, sstefan1.

This patch allows to simplify compiler implementation on "taskwait nowait" construct.
The "taskwait nowait" is semantically equivalent to the empty task.
Instead of creating an empty routine as a task entry, compiler can just send NULL pointer to the runtime.
Then the runtime will make all the work with dependences and return because of the absent task routine.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D112015

Files:
  openmp/runtime/src/kmp_tasking.cpp
  openmp/runtime/test/tasking/kmp_taskwait_nowait.c

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