Add kernel and kernel writer skeletons

* Add the skeleton for kernel, kernel writer and their respective
  OpenCL implementation.
* Add method to write code comment and its test.

Resolves: COMPMID-6343
Signed-off-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Change-Id: Ib986228154f7a00da7a5fd3b7105941325fe13b1
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9889
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/compute_kernel_writer/include/ckw/KernelWriter.h b/compute_kernel_writer/include/ckw/KernelWriter.h
new file mode 100644
index 0000000000..ba8a6015e6
--- /dev/null
+++ b/compute_kernel_writer/include/ckw/KernelWriter.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2023 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef CKW_INCLUDE_CKW_KERNELWRITER_H
+#define CKW_INCLUDE_CKW_KERNELWRITER_H
+
+#include "ckw/types/TargetArchitecture.h"
+#include "ckw/types/TargetLanguage.h"
+#include <memory>
+#include <string>
+
+namespace ckw
+{
+
+class Kernel;
+
+/** A kernel writer.
+ *
+ * This class is used to construct a new kernel by defining arguments, declaring variable and writing code.
+ *
+ * Use @ref KernelWriter::create_instance method to create the kernel writer for the specific target architecture and language.
+ *
+ * After having finished constructing the kernel, call @ref KernelWriter::emit_kernel to get the kernel object.
+ */
+class KernelWriter
+{
+public:
+    // =============================================================================================
+    // Construtors and destructor
+    // =============================================================================================
+
+    /** Initialize a new instance of @ref KernelWriter class for the specific architecture and language.
+     *
+     * Supported target architectures and languages:
+     *
+     * Architecture                  | Languages                    |
+     * ------------------------------|------------------------------|
+     * GpuArmMaliValhall             | OpenCL                       |
+     *
+     * @param[in] architecture The architecture on which the kernel is executed.
+     * @param[in] language     The language to write the kernel.
+     */
+    static std::unique_ptr<KernelWriter> create_instance(TargetArchitecture architecture, TargetLanguage language);
+
+    /** Destructor */
+    virtual ~KernelWriter();
+
+    // =============================================================================================
+    // Misc
+    // =============================================================================================
+
+    /** Write the line comment in debug build.
+     * This function does not take effect on release build.
+     *
+     * The comment must only contain one line (i.e. no newline character is allowed).
+     *
+     * @param[in] text The comment to be written.
+     */
+    virtual void comment(const std::string &text) = 0;
+
+    // =============================================================================================
+    // Code generation
+    // =============================================================================================
+
+    /** Emit the kernel object.
+     *
+     * @param[in] name The name of the kernel object to be generated.
+     */
+    virtual std::unique_ptr<Kernel> emit_kernel(const std::string &name) = 0;
+};
+
+} // namespace ckw
+
+#endif // CKW_INCLUDE_CKW_KERNELWRITER_H