[all-commits] [llvm/llvm-project] 7d5763: [OpenMP] Add new execution mode for SPMD execution...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7d576392644d44a765336f6ebefd45f5db61231e
      https://github.com/llvm/llvm-project/commit/7d576392644d44a765336f6ebefd45f5db61231e
  Author: Joseph Huber <jhuber6 at vols.utk.edu>
  Date:   2021-07-21 (Wed, 21 Jul 2021)

  Changed paths:
    M llvm/lib/Transforms/IPO/OpenMPOpt.cpp
    M llvm/test/Transforms/OpenMP/is_spmd_exec_mode_fold.ll
    M llvm/test/Transforms/OpenMP/spmdization.ll
    M openmp/libomptarget/plugins/amdgpu/src/rtl.cpp
    M openmp/libomptarget/plugins/cuda/src/rtl.cpp

  Log Message:
  -----------
  [OpenMP] Add new execution mode for SPMD execution with Generic semantics

Qualified kernels can be transformed from generic-mode to SPMD mode using an
optimization in OpenMPOpt. This patch introduces a new execution mode to
indicate kernels that have been transformed from generic-mode to SPMD-mode.
These kernels have SPMD-mode execution, but need generic-mode semantics for
scheduling the blocks and threads. Without this far too few blocks will be
scheduled for a generic region as SPMD mode expects the trip count to be
divided by the number of threads.

Reviewed By: ggeorgakoudis

Differential Revision: https://reviews.llvm.org/D106460