[llvm] WIP: [Offload] Add testing for Offload program and kernel related entry points (PR #127803)

[Joseph Huber via llvm-commits]

================
@@ -0,0 +1,104 @@
+//===-- Enqueue.td - Enqueue 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 enqueable operations
+//
+//===----------------------------------------------------------------------===//
+
+def : Function {
+    let name = "olEnqueueMemcpy";
+    let desc = "Enqueue a memcpy operation.";
+    let details = [
+        "For host pointers, use the device returned by olGetHostDevice",
+        "At least one device must be a non-host device"
+    ];
+    let params = [
+        Param<"ol_queue_handle_t", "Queue", "handle of the queue", PARAM_IN>,
+        Param<"void*", "DstPtr", "pointer to copy to", PARAM_IN>,
+        Param<"ol_device_handle_t", "DstDevice", "device that DstPtr belongs to", PARAM_IN>,
+        Param<"void*", "SrcPtr", "pointer to copy from", PARAM_IN>,
+        Param<"ol_device_handle_t", "SrcDevice", "device that SrcPtr belongs to", PARAM_IN>,
+        Param<"size_t", "Size", "size in bytes of data to copy", PARAM_IN>,
+        Param<"ol_event_handle_t*", "EventOut", "optional recorded event for the enqueued operation", PARAM_OUT_OPTIONAL>
+    ];
+    let returns = [
+        Return<"OL_ERRC_INVALID_SIZE", ["`Size == 0`"]>
+    ];
+}
+
+def : Function {
+    let name = "olEnqueueMemcpyHtoD";
----------------
jhuber6 wrote:

This is redundant if we go with the API I outlined, it's just a memcpy between two 'devices' where the host is one of them.

https://github.com/llvm/llvm-project/pull/127803