[all-commits] [llvm/llvm-project] c34bd4: [flang][OpenACC] Don't emit unstructured-loop TODO...

[Kareem Ergawy via All-commits]

  Branch: refs/heads/users/ergawy/acc-kernels-wrappable-unstructured-loop
  Home:   https://github.com/llvm/llvm-project
  Commit: c34bd4162044b4104312cc7b0c25d029c99d5049
      https://github.com/llvm/llvm-project/commit/c34bd4162044b4104312cc7b0c25d029c99d5049
  Author: ergawy <kareem.ergawy at gmail.com>
  Date:   2026-09-09 (Wed, 09 Sep 2026)

  Changed paths:
    M flang/lib/Lower/OpenACC.cpp
    M flang/lib/Lower/PFTBuilder.cpp
    M flang/test/Lower/OpenACC/Todo/do-loops-to-acc-loops-todo.f90
    M flang/test/Lower/OpenACC/acc-unstructured.f90

  Log Message:
  -----------
  [flang][OpenACC] Don't emit unstructured-loop TODO for wrappable loops

`genOpenACCLoopFromDoConstruct` raised an NYI for any unstructured DO inside `acc kernels`. That check ran before the wrapping in `genFIR(DoConstruct)`, so a loop whose CFG is self-contained aborted lowering even though the fall-back path would have wrapped it in an `scf.execute_region`.

Skip the TODO when `isWrappableConstruct()` accepts the loop. Such a loop is not attached to a directive; it is only nested inside the kernels region.

Correspondingly, a DO loop sitting directly in an `acc kernels` body is no longer wrappable, since it is the loop the directive parallelizes and hiding its CFG would leave the kernels region with nothing to partition.



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