[all-commits] [llvm/llvm-project] 152592: [flang][cuda] Allow host variables to be defined i...

[Zhen Wang via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 152592b346a8edddd4b6d6ac59494f81fdb7eb2c
      https://github.com/llvm/llvm-project/commit/152592b346a8edddd4b6d6ac59494f81fdb7eb2c
  Author: Zhen Wang <zhenw at nvidia.com>
  Date:   2026-04-14 (Tue, 14 Apr 2026)

  Changed paths:
    M flang/lib/Semantics/definable.cpp
    A flang/test/Semantics/cuf26.cuf

  Log Message:
  -----------
  [flang][cuda] Allow host variables to be defined in device subprograms under -gpu=unified (#192118)

When `-gpu=unified` (or `-gpu=mem:unified`) is enabled, host variables
should be definable in device subprograms because HMM/ATS makes all host
memory accessible from the GPU.

The definability check in `WhyNotDefinableBase` was unconditionally
rejecting host variables in device contexts. This fix skips that check
when `CudaUnified` is enabled.



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