[all-commits] [llvm/llvm-project] 119545: [mlir] Add conversion from SCF parallel loops to O...

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  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 119545f4338efacabf99e06eeca965913f6617f2
      https://github.com/llvm/llvm-project/commit/119545f4338efacabf99e06eeca965913f6617f2
  Author: Alex Zinenko <zinenko at google.com>
  Date:   2020-11-24 (Tue, 24 Nov 2020)

  Changed paths:
    M mlir/include/mlir/Conversion/Passes.h
    M mlir/include/mlir/Conversion/Passes.td
    A mlir/include/mlir/Conversion/SCFToOpenMP/SCFToOpenMP.h
    M mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
    M mlir/lib/Conversion/CMakeLists.txt
    M mlir/lib/Conversion/PassDetail.h
    A mlir/lib/Conversion/SCFToOpenMP/CMakeLists.txt
    A mlir/lib/Conversion/SCFToOpenMP/SCFToOpenMP.cpp
    M mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
    A mlir/test/Conversion/SCFToOpenMP/scf-to-openmp.mlir

  Log Message:
  -----------
  [mlir] Add conversion from SCF parallel loops to OpenMP

Introduce a conversion pass from SCF parallel loops to OpenMP dialect
constructs - parallel region and workshare loop. Loops with reductions are not
supported because the OpenMP dialect cannot model them yet.

The conversion currently targets only one level of parallelism, i.e. only
one top-level `omp.parallel` operation is produced even if there are nested
`scf.parallel` operations that could be mapped to `omp.wsloop`. Nested
parallelism support is left for future work.

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D91982