/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015-2024 Advanced Micro Devices, Inc. All rights reserved.
 *
 * 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.
 */
#include "migraphx/instruction.hpp"
#include "migraphx/instruction_ref.hpp"
#include <migraphx/reduce_dims.hpp>
#include <migraphx/gpu/compiler.hpp>
#include <migraphx/gpu/context.hpp>
#include <migraphx/gpu/compile_hip_code_object.hpp>
#include <migraphx/gpu/compile_hip.hpp>
#include <migraphx/gpu/compile_gen.hpp>

namespace migraphx {
inline namespace MIGRAPHX_INLINE_NS {
namespace gpu {

using namespace migraphx::gpu::gen; // NOLINT

static const char* const unpack_int4_kernel = R"__migraphx__(
#include <migraphx/kernels/unpack_int4.hpp>
#include <args.hpp>

namespace migraphx {

extern "C" {

MIGRAPHX_GLOBAL void ${kernel}(${params}) 
{
    transform_args(make_tensors(), rotate_last())(${args})([](auto... xs) {
        unpack_int4<${axis}>(xs...);
    });
}
    
}

} // namespace migraphx

)__migraphx__";

struct unpack_int4_compiler : compiler<unpack_int4_compiler>
{
    std::vector<std::string> names() const { return {"unpack_int4"}; }

    operation compile_op(context& ctx, const std::vector<shape>& inputs, const value& v) const
    {
        hip_compile_options options;
        options.inputs         = inputs;
        options.output         = inputs.back();
        options.virtual_inputs = reduce_dims(normalize_permutation(options.inputs));
        options.kernel_name    = "unpack_int4_kernel";
        options.set_launch_params(v, compute_global_for(ctx, inputs.front().elements()));

        auto src =
            interpolate_string(unpack_int4_kernel,
                               {{"kernel", options.kernel_name},
                                {"params", enum_params(options.inputs.size(), "void * private_p")},
                                {"args", enum_params(options.inputs.size(), "private_p")},
                                {"axis", std::to_string(v.at("axis").to<int>())}});
        return compile_hip_code_object(ctx, src, options);
    }

    compiler_replace compile(context& ctx, instruction_ref ins, const operation& op) const
    {
        return compile_op(ctx, to_shapes(ins->inputs()), op.to_value());
    }
};

} // namespace gpu
} // namespace MIGRAPHX_INLINE_NS
} // namespace migraphx