[all-commits] [llvm/llvm-project] 17cb8a: [Flang][OpenMP] Accept the reduction modifier (#86...

[Kiran Chandramohan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 17cb8a537b688ac6e4187f28f9e784491bb8abc5
      https://github.com/llvm/llvm-project/commit/17cb8a537b688ac6e4187f28f9e784491bb8abc5
  Author: Kiran Chandramohan <kiran.chandramohan at arm.com>
  Date:   2024-04-15 (Mon, 15 Apr 2024)

  Changed paths:
    M flang/include/flang/Parser/dump-parse-tree.h
    M flang/include/flang/Parser/parse-tree.h
    M flang/lib/Lower/OpenMP/Clauses.cpp
    M flang/lib/Lower/OpenMP/ReductionProcessor.cpp
    M flang/lib/Parser/openmp-parsers.cpp
    M flang/lib/Parser/unparse.cpp
    M flang/lib/Semantics/check-omp-structure.cpp
    A flang/test/Lower/OpenMP/Todo/reduction-modifiers.f90
    A flang/test/Parser/OpenMP/reduction-modifier.f90
    M llvm/include/llvm/Frontend/OpenMP/ClauseT.h

  Log Message:
  -----------
  [Flang][OpenMP] Accept the reduction modifier (#86492)

Accept the reduction modifier in the Flang parser. Issue a TODO message
during lowering.

OpenMP 5.0 introduced the reduction modifier. Details can be seen in
2.19.5.4 reductionClause.
OpenMP 5.2 relevant section is 5.5.8reductionClause.

This will help remove some of the parser errors highlighted in the
following post and also bring it to a well defined behaviour (produce
TODO errors for unsupported features, do not crash).
https://discourse.llvm.org/t/proposal-rename-flang-new-to-flang/69462/60



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