[all-commits] [llvm/llvm-project] f6976c: [Flang][OpenMP] Correct ArrayElements in Reduction...

[Jack Styles via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f6976c8e7be28eae61f4c636370caef124a65f57
      https://github.com/llvm/llvm-project/commit/f6976c8e7be28eae61f4c636370caef124a65f57
  Author: Jack Styles <jack.styles at arm.com>
  Date:   2026-07-08 (Wed, 08 Jul 2026)

  Changed paths:
    M flang/include/flang/Lower/Support/ReductionProcessor.h
    M flang/lib/Lower/Bridge.cpp
    M flang/lib/Lower/ConvertExprToHLFIR.cpp
    M flang/lib/Lower/OpenMP/ClauseProcessor.cpp
    M flang/lib/Lower/OpenMP/DataSharingProcessor.cpp
    M flang/lib/Lower/OpenMP/DataSharingProcessor.h
    M flang/lib/Lower/OpenMP/OpenMP.cpp
    M flang/lib/Lower/Support/ReductionProcessor.cpp
    A flang/test/Lower/OpenMP/reduction-array-element.f90

  Log Message:
  -----------
  [Flang][OpenMP] Correct ArrayElements in Reduction Clause (#196094)

Currently, when an ArrayElement is used within a Reduction clause, it
will be lowered with the reduction referencing the box containing the
array, not just the element.

To address this, adjust Flang lowering to track expressions alongside
symbol to ensure that the Array Element context is not lost and
considered when lowering a reduction with Array Element. This ensures
that, when represented in HLFIR, it will be just the element's type,
rather than the full array.

Currently this excludes DO CONCURRENT as it excludes Array Elements, and
is limited to Array Elements but there are options to expand this into
Array Sections in the future.

Assisted-by: Codex



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