/*******************************************************************************
 *
 * MIT License
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 * Copyright (c) 2021 Advanced Micro Devices, Inc.
 *
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 * of this software and associated documentation files (the "Software"), to deal
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 * furnished to do so, subject to the following conditions:
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 * copies or substantial portions of the Software.
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 * SOFTWARE.
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#include <miopen/solver/conv_direct_naive_conv.hpp>
#include <miopen/solver.hpp>
#include <miopen/problem_description.hpp>
#include <miopen/gcn_asm_utils.hpp>
#include <miopen/stringutils.hpp>
#include <ostream>

namespace miopen {

namespace debug {
// NOLINTNEXTLINE (cppcoreguidelines-avoid-non-const-global-variables)
bool AlwaysEnableConvDirectNaive = false;

} // namespace debug

namespace solver {

bool ConvDirectNaiveConvIsAssemblyKernel(const ConvolutionContext& ctx)
{
    const auto device_name = ctx.GetStream().GetDeviceName();
    return (device_name == "gfx906" || device_name == "gfx908") && ctx.rmv.IsV3() &&
           ctx.IsLayoutDefault();
}

std::string ConvDirectNaiveConvKernelName(const ConvolutionContext& ctx)
{
    std::ostringstream kernel_name;
    kernel_name << "naive_conv_";
    if(ctx.direction.IsForward())
        kernel_name << "fwd_";
    else if(ctx.direction.IsBackwardData())
        kernel_name << "bwd_";
    else if(ctx.direction.IsBackwardWrW())
        kernel_name << "wrw_";
    else
        MIOPEN_THROW("unsupported convolution direction");

    if(ctx.IsLayoutDefault())
    {
        if(ctx.Is2d())
            kernel_name << "nchw_";
        else
            kernel_name << "ncdhw_";
    }
    else if(ctx.IsLayoutNHWC())
    {
        if(ctx.Is2d())
            kernel_name << "nhwc_";
        else
            kernel_name << "ndhwc_";
    }
    else
        MIOPEN_THROW("unsupported tensor layout");

    if(ctx.IsFp32())
        kernel_name << "fp32";
    else if(ctx.IsFp16())
        kernel_name << "fp16";
    else if(ctx.IsBfp16())
        kernel_name << "bf16";
    else
        MIOPEN_THROW("unsupported data type:");

    return kernel_name.str();
}

std::string ConvDirectNaiveConvKernelFile(const ConvolutionContext& ctx)
{
    if(ConvDirectNaiveConvIsAssemblyKernel(ctx))
        return "naive_conv_gcn.s";
    else
        return "naive_conv.cpp";
}

std::string ConvDirectNaiveConvCompileOption(const ConvolutionContext& ctx)
{
    std::string filename = ConvDirectNaiveConvKernelFile(ctx);
    if(miopen::EndsWith(filename, ".s"))
    {
        std::ostringstream options;
        GenerateClangDefsym(options, "ROCM_METADATA_VERSION", 5);
        return options.str();
    }
    return ctx.general_compile_options;
}

bool ConvDirectNaiveConvIsApplicableByKernelType(const ConvolutionContext& ctx)
{
    if(ConvDirectNaiveConvIsAssemblyKernel(ctx))
    {
        if(!ctx.use_asm_kernels)
            return false;
    }
    else
    {
        if(!ctx.use_hip_kernels)
            return false;
    }
    return true;
}

} // namespace solver
} // namespace miopen