[llvm] [Offload] Add device UID (PR #164391)

[Robert Imschweiler via llvm-commits]

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@@ -293,6 +294,12 @@ struct CUDADeviceTy : public GenericDeviceTy {
     if (auto Err = Plugin::check(Res, "error in cuDeviceGet: %s"))
       return Err;
 
+    CUuuid UUID = {0};
+    Res = cuDeviceGetUuid(&UUID, Device);
+    if (auto Err = Plugin::check(Res, "error in cuDeviceGetUuid: %s"))
+      return Err;
+    setDeviceUidFromVendorUid(toHex(UUID.bytes, true));
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ro-i wrote:

my "set" helper is protected, just to make sure that subclasses follow the same style for constructing the UID

https://github.com/llvm/llvm-project/pull/164391