[all-commits] [llvm/llvm-project] bc9886: [flang][OpenACC] Don't emit unstructured-loop TODO...

[Kareem Ergawy via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bc9886e720f178e0d35db1c2e11f17739b5106ce
      https://github.com/llvm/llvm-project/commit/bc9886e720f178e0d35db1c2e11f17739b5106ce
  Author: Kareem Ergawy <kergawy at nvidia.com>
  Date:   2026-09-11 (Fri, 11 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 (#222260)

`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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