[Openmp-commits] [PATCH] D132005: Add non-blocking support for target nowait regions

[Guilherme Valarini via Phabricator via Openmp-commits]

gValarini created this revision.
gValarini added reviewers: jdoerfert, tianshilei1992.
Herald added a project: All.
gValarini requested review of this revision.
Herald added subscribers: openmp-commits, sstefan1.
Herald added a project: OpenMP.

This patch better integrates the target nowait functions with the
tasking runtime. It splits the nowait execution into two stages:
a dispatch stage, that triggers all the necessary asynchronous device
operations and stores a set of post-processing procedures that must be
executed after said ops; and a synchronization stage, responsible for
synchronizing the previous operations in a non-blocking manner and
running the appropriate post-processing functions. If during the
synchronization stage the operations are not completed, the attached
hidden helper task is re-enqueued to any hidden helper thread to be
later synchronized, allowing other target nowait regions to be
concurrently dispatched.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D132005

Files:
  openmp/libomptarget/include/omptarget.h
  openmp/libomptarget/src/interface.cpp
  openmp/libomptarget/src/omptarget.cpp
  openmp/libomptarget/src/private.h

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