[all-commits] [llvm/llvm-project] c19b9c: [flang][CUDA] Only apply implicit managed attribut...

[Zhen Wang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c19b9cf35a0fbcc97f57d4f0e61756388ee79c96
      https://github.com/llvm/llvm-project/commit/c19b9cf35a0fbcc97f57d4f0e61756388ee79c96
  Author: Zhen Wang <zhenw at nvidia.com>
  Date:   2026-05-04 (Mon, 04 May 2026)

  Changed paths:
    M flang/lib/Semantics/resolve-names.cpp
    A flang/test/Lower/CUDA/cuda-gpu-managed-without-fcuda.f90

  Log Message:
  -----------
  [flang][CUDA] Only apply implicit managed attribute when CUDA Fortran is enabled (#195353)

The implicit-managed tagging added in #175648 was intended for CUDA
Fortran allocatables. However, the gate was just
LanguageFeature::CudaManaged, so the tagging also fires on
non-CUDA-Fortran translation units when -gpu=mem:managed is in effect.

This patch adds a LanguageFeature::CUDA check so the implicit tagging
only fires for CUDA Fortran TUs (driver-set -fcuda or .cuf/.CUF source).
Adds a regression test that bbc -gpu=managed without -fcuda on a .f90
source must not produce any cuf.* ops or #cuf.cuda<managed> attributes.



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