[llvm] [Offload] Introduce ATTACH map-type support for pointer attachment. (PR #149036)

[Joseph Huber via llvm-commits]

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@@ -2538,6 +2538,10 @@ struct AMDGPUDeviceTy : public GenericDeviceTy, AMDGenericDeviceTy {
                                           getAgent(), (uint64_t)Size);
   }
 
+  Error dataFence(__tgt_async_info *Async) override {
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jhuber6 wrote:

If they just do nothing right now it'd be clearer to implement them first or leave them out of this patch.

https://github.com/llvm/llvm-project/pull/149036