[all-commits] [llvm/llvm-project] 278406: [MLIR][Flang][OpenMP] Remove omp.parallel from loo...

[Sergio Afonso via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2784060c167d86a05f20a0ab1892f96e69a2da20
      https://github.com/llvm/llvm-project/commit/2784060c167d86a05f20a0ab1892f96e69a2da20
  Author: Sergio Afonso <safonsof at amd.com>
  Date:   2024-08-29 (Thu, 29 Aug 2024)

  Changed paths:
    M flang/lib/Lower/OpenMP/DataSharingProcessor.cpp
    M mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td
    M mlir/include/mlir/Dialect/OpenMP/OpenMPOpsInterfaces.td
    M mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp
    M mlir/test/Dialect/OpenMP/invalid.mlir
    M mlir/test/Dialect/OpenMP/ops.mlir

  Log Message:
  -----------
  [MLIR][Flang][OpenMP] Remove omp.parallel from loop wrapper ops (#105833)

This patch updates the `omp.parallel` operation according to the results
of the discussion in [this
RFC](https://discourse.llvm.org/t/rfc-disambiguation-between-loop-and-block-associated-omp-parallelop/79972).
It is removed from the set of loop wrapper operations, changing the
expected MLIR representation for composite `distribute parallel do/for`
into the following:

```mlir
omp.parallel {
  ...
  omp.distribute {
    omp.wsloop {
      omp.loop_nest ... { ... }
      omp.terminator
    }
    omp.terminator
  }
  ...
  omp.terminator
}
```

MLIR verifiers for operations impacted by this representation change are
updated, as well as related tests. The `LoopWrapperInterface` is also
updated, since it's no longer representing an optional "role" of an
operation but a mandatory set of restrictions instead.



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