[llvm] [LLVMOffload] Add internal StreamTy (PR #216374)

[Sophia Herrmann via llvm-commits]

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@@ -0,0 +1,33 @@
+//===-- Stream.h - Kernel language stream state ---------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_OFFLOAD_LANGUAGES_KERNEL_INCLUDE_STREAM_H
+#define LLVM_OFFLOAD_LANGUAGES_KERNEL_INCLUDE_STREAM_H
+
+#include "OffloadAPI.h"
+
+namespace llvm {
+namespace offload {
+
+enum class QueueKind {
+  LegacyDefault,
+  PerThreadDefault,
+  ExplicitBlocking,
+  ExplicitNonBlocking,
+};
+
+struct StreamTy {
+  ol_queue_handle_t Queue = nullptr;
+  ol_device_handle_t Device = nullptr;
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jellytabby wrote:

Its used as a convenience to avoid having to call `olGetQueueInfo(..., OL_QUEUE_INFO_DEVICE, ...)` everytime we want to access it. `ol_queue_handle_t` doesnt directly expose the fields of the underlying struct

https://github.com/llvm/llvm-project/pull/216374