[all-commits] [llvm/llvm-project] 0e4e8a: [flang][OpenMP] Implement iterator that flattens B...

[Krzysztof Parzyszek via All-commits]

  Branch: refs/heads/users/kparzysz/iterator-2
  Home:   https://github.com/llvm/llvm-project
  Commit: 0e4e8ab05da4177c2c7b89bee1f2290942398634
      https://github.com/llvm/llvm-project/commit/0e4e8ab05da4177c2c7b89bee1f2290942398634
  Author: Krzysztof Parzyszek <Krzysztof.Parzyszek at amd.com>
  Date:   2026-02-11 (Wed, 11 Feb 2026)

  Changed paths:
    M flang/include/flang/Parser/openmp-utils.h
    M flang/lib/Parser/openmp-utils.cpp
    M flang/lib/Semantics/check-omp-loop.cpp

  Log Message:
  -----------
  [flang][OpenMP] Implement iterator that flattens BLOCK constructs

In OpenMP a canonical loop nest may be enclosed in a BLOCK construct.
Specifically, the two loops below are considered to form a valid loop
sequence:
  do i = 1, n
  end do
  block
    do j = 1, m
    end do
  end block

Implement an extension to parser::Block::iterator that will treat the
example above as
  do i = 1, n
  end do
  do j = 1, m
  end do
that is, as if the BLOCK/ENDBLOCK statement were deleted. This will
make the analysis of loop nests easier, since any such code will not
have to deal with BLOCK constructs itself.



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