Add amd plugin interfaces

Author: adurang

offload/plugins-nextgen/amdgpu/src/rtl.cpp

@@ -2712,6 +2712,38 @@ struct AMDGPUDeviceTy : public GenericDeviceTy, AMDGenericDeviceTy {
     return Plugin::success();
   }
 
+  interop_spec_t selectInteropPreference(int32_t InteropType,
+                                         int32_t NumPrefers,
+                                         interop_spec_t *Prefers) override {
+    // TODO: update once targetsync is supported
+    if (InteropType != kmp_interop_type_target)
+      return interop_spec_t{tgt_fr_hip, {false, 0}, 0};
+    return interop_spec_t{tgt_fr_none, {false, 0}, 0};
+  }
+
+  Expected<omp_interop_val_t *>
+  createInterop(int32_t InteropType, interop_spec_t &InteropSpec) override {
+    auto *Ret = new omp_interop_val_t(
+        DeviceId, static_cast<kmp_interop_type_t>(InteropType));
+    Ret->fr_id = tgt_fr_hip;
+    Ret->vendor_id = omp_vendor_amd;
+
+    // TODO: implement targetsync support
+
+    Ret->device_info.Platform = nullptr;
+    Ret->device_info.Device = reinterpret_cast<void *>(Agent.handle);
+    Ret->device_info.Context = nullptr;
+
+    return Ret;
+  }
+
+  Error releaseInterop(omp_interop_val_t *Interop) override {
+    if (!Interop)
+      return Plugin::success();
+    delete Interop;
+    return Plugin::success();
+  }
+
   Error enqueueHostCallImpl(void (*Callback)(void *), void *UserData,
                             AsyncInfoWrapperTy &AsyncInfo) override {
     AMDGPUStreamTy *Stream = nullptr;