[Openmp-commits] [openmp] [OpenMP] Enable automatic unified shared memory on MI300A. (PR #77512)

[Joseph Huber via Openmp-commits]

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@@ -33,7 +33,12 @@ enum OpenMPOffloadingRequiresDirFlags : int64_t {
   /// unified_shared_memory clause.
   OMP_REQ_UNIFIED_SHARED_MEMORY = 0x008,
   /// dynamic_allocators clause.
-  OMP_REQ_DYNAMIC_ALLOCATORS = 0x010
+  OMP_REQ_DYNAMIC_ALLOCATORS = 0x010,
+  /// Auto zero-copy extension:
+  /// when running on an APU, the GPU plugin may decide to
+  /// run in zero-copy even though the user did not program
+  /// their application with unified_shared_memory requirement.
+  OMPX_REQ_AUTO_ZERO_COPY = 0x020
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jhuber6 wrote:

Is this the right place for this? These enumerations are supposed to correspond directly to `omp requires xxx` directives.

https://github.com/llvm/llvm-project/pull/77512