[all-commits] [llvm/llvm-project] e282ae: [Flang][openmp][4/5] Make nowait clause part of Om...

[sameeranjoshi via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: e282ae57da29a37e143ab6d640f68e794f5cd614
      https://github.com/llvm/llvm-project/commit/e282ae57da29a37e143ab6d640f68e794f5cd614
  Author: sameeran joshi <sameeranjayant.joshi at amd.com>
  Date:   2020-12-22 (Tue, 22 Dec 2020)

  Changed paths:
    M flang/include/flang/Parser/dump-parse-tree.h
    M flang/include/flang/Parser/parse-tree.h
    M flang/lib/Parser/openmp-parsers.cpp
    M flang/lib/Parser/unparse.cpp
    M flang/lib/Semantics/check-omp-structure.cpp
    M flang/lib/Semantics/check-omp-structure.h
    M llvm/include/llvm/Frontend/OpenMP/OMP.td

  Log Message:
  -----------
  [Flang][openmp][4/5] Make nowait clause part of OmpClause

After discussion in `D93482` we found that the some of the clauses were not
following the common OmpClause convention.

The benefits of using OmpClause:
- Functionalities from structure checker are mostly aligned to work with
  `llvm::omp::Clause`.
- The unparsing as well can take advantage.
- Homogeneity with OpenACC and rest of the clauses in OpenMP.
- Could even generate the parser with TableGen, when there is homogeneity.
- It becomes confusing when to use `flangClass` and `flangClassValue` inside
  TableGen, if incase we generate parser using TableGen we could have only a
  single `let expression`.

This patch makes `OmpNoWait` clause part of `OmpClause`.

Reviewed By: clementval, kiranktp

Differential Revision: https://reviews.llvm.org/D93643