================
@@ -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,
----------------
Ritanya-B-Bharadwaj wrote:
Right, I get that OMP_MAP_LITERAL just passes the pointer(or anything that fits
into a register as you mentioned) as is, without changing anything. But the
problem is, it doesn’t guarantee that the memory it points to is actually
accessible on the device. OMP_MAP_SELF explicitly states that the memory is
already available on the device and avoids unnecessary mappings. The idea was
to avoid unnecessary copies, especially for USM.
If there’s another way to handle this cleanly, I’m open to discussing it.
Please let me know.
https://github.com/llvm/llvm-project/pull/134131
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