[all-commits] [llvm/llvm-project] ca4021: [flang][OpenMP] Upstream `do concurrent` loop-nest...

[Kareem Ergawy via All-commits]

  Branch: refs/heads/users/ergawy/upstream_do_concurrent_2
  Home:   https://github.com/llvm/llvm-project
  Commit: ca40210729bf560bdbc82f1a1cd05f7b75810cdb
      https://github.com/llvm/llvm-project/commit/ca40210729bf560bdbc82f1a1cd05f7b75810cdb
  Author: ergawy <kareem.ergawy at amd.com>
  Date:   2025-03-04 (Tue, 04 Mar 2025)

  Changed paths:
    M flang/docs/DoConcurrentConversionToOpenMP.md
    M flang/lib/Optimizer/OpenMP/DoConcurrentConversion.cpp
    A flang/test/Transforms/DoConcurrent/loop_nest_test.f90

  Log Message:
  -----------
  [flang][OpenMP] Upstream `do concurrent` loop-nest detection.

Upstreams the next part of `do concurrent` to OpenMP mapping pass (from
AMD's ROCm implementation). See #126026 for more context.

This PR add loop nest detection logic. This enables us to discover
muli-range `do concurrent` loops and then map them as "collapsed" loop
nests to OpenMP.



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