[llvm] [Offload] Implement the remaining initial Offload API (PR #122106)

[Johannes Doerfert via llvm-commits]

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@@ -0,0 +1,41 @@
+//===-- Event.td - Event definitions for Offload -----------*- tablegen -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains Offload API definitions related to the event handle
+//
+//===----------------------------------------------------------------------===//
+
+def : Function {
+    let name = "olRetainEvent";
+    let desc = "Increment the reference count of the given event";
+    let details = [];
+    let params = [
+        Param<"ol_event_handle_t", "Event", "handle of the event", PARAM_IN>
+    ];
+    let returns = [];
+}
+
+def : Function {
+    let name = "olReleaseEvent";
+    let desc = "Decrement the reference count of the given event";
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jdoerfert wrote:

Is it expected to delete the event if the ref count hits 0? If so, we might want to mention it. Same for other releases.

https://github.com/llvm/llvm-project/pull/122106