[llvm] [OFFLOAD] Add plugin with support for Intel oneAPI Level Zero (PR #158900)

[Alex Duran via llvm-commits]

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@@ -0,0 +1,138 @@
+//===--- Level Zero Target RTL Implementation -----------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// Plugin interface for SPIR-V/Xe machine
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_LEVEL_ZERO_L0PLUGIN_H
+#define OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_LEVEL_ZERO_L0PLUGIN_H
+
+#include "AsyncQueue.h"
+#include "L0Defs.h"
+#include "L0Device.h"
+#include "L0Memory.h"
+#include "L0Options.h"
+#include "L0Program.h"
+#include "TLS.h"
+
+namespace llvm::omp::target::plugin {
+
+/// Class implementing the LevelZero specific functionalities of the plugin.
+class LevelZeroPluginTy final : public GenericPluginTy {
+private:
+  /// Number of devices available including subdevices
+  uint32_t NumDevices = 0;
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adurang wrote:

In the past when we supported subdevices this and the one in the common interface didn't have the same value. I've been removing that support so I'm almost sure we can do as you suggest now. Running some testing to confirm and will  make the changes if I find nothing.

https://github.com/llvm/llvm-project/pull/158900