[clang] [llvm] [clang] [OpenMP] New OpenMP 6.0 self_maps clause - CodeGen (PR #134131)

[via llvm-commits]

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@@ -236,6 +236,8 @@ enum class OpenMPOffloadMappingFlags : uint64_t {
   // dynamic.
   // This is an OpenMP extension for the sake of OpenACC support.
   OMP_MAP_OMPX_HOLD = 0x2000,
+  /// Self directs mapping without creating a separate device copy.
+  OMP_MAP_SELF = 0x4000,
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Ritanya-B-Bharadwaj wrote:

OMP_MAP_SELF ensures that a variable is used directly on the device without creating a new copy. As per my understanding, OMP_MAP_LITERAL works for pointers, but it doesn’t guarantee they point to device-accessible memory. This is especially useful for USM, where we don’t want unnecessary mappings.

https://github.com/llvm/llvm-project/pull/134131