[all-commits] [llvm/llvm-project] bff6b9: [flang][OpenMP] Map `teams loop` to `teams distrib...

[Kareem Ergawy via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bff6b926e2a42c15451058828fca313ff40e36dd
      https://github.com/llvm/llvm-project/commit/bff6b926e2a42c15451058828fca313ff40e36dd
  Author: Kareem Ergawy <kareem.ergawy at amd.com>
  Date:   2025-02-21 (Fri, 21 Feb 2025)

  Changed paths:
    M flang/lib/Optimizer/OpenMP/GenericLoopConversion.cpp
    M flang/test/Lower/OpenMP/loop-directive.f90

  Log Message:
  -----------
  [flang][OpenMP] Map `teams loop` to `teams distribute` when required. (#127489)

This extends support for generic `loop` rewriting by:
1. Preventing nesting multiple worksharing loops inside each other. This
is checked by walking the `teams loop` region searching for any `loop`
directive whose `bind` modifier is `parallel`.
2. Preventing convert to worksharing loop if calls to unknow functions
are found in the `loop` directive's body.

We walk the `teams loop` body to identify either of the above 2
conditions, if either of them is found to be true, we map the `loop`
directive to `distribute`.



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