convolution.cpp

#include <migraphx/config.hpp>
#include <migraphx/register_op.hpp>
#include <migraphx/reflect.hpp>
#include <migraphx/par_for.hpp>
#include <migraphx/context.hpp>
#include <migraphx/cpu/context.hpp>
#include <migraphx/cpu/dnnl.hpp>
#include <migraphx/op/convolution.hpp>
#include <migraphx/op/quant_convolution.hpp>

namespace migraphx {
inline namespace MIGRAPHX_INLINE_NS {
namespace cpu {

struct dnnl_convolution
    : dnnl_extend_op<dnnl_convolution, dnnl::convolution_forward, op::convolution>
{
    std::vector<int> arg_map(int) const { return {DNNL_ARG_SRC, DNNL_ARG_WEIGHTS}; }

    shape adjust_shape(const shape& x, int i) const
    {
        auto s = base_adjust_shape(x);
        if(i == 1 and op.group > 1)
        {
            // TODO: Add support for transposed weights
            if(not s.standard())
                MIGRAPHX_THROW("Weights for grouped convolution must be standard");
            auto lens = s.lens();
            lens.insert(lens.begin(), op.group);
            lens.at(1) /= op.group;
            return shape{s.type(), lens};
        }
        return s;
    }

    dnnl::convolution_forward::desc
    get_desc(const std::unordered_map<int, dnnl::memory::desc>& m) const
    {
        // In DNNL dilation is zero-based
        auto dilation = op.dilation;
        std::transform(
            dilation.begin(), dilation.end(), dilation.begin(), [](auto x) { return x - 1; });
        auto kdims = op.kdims();
        std::vector<size_t> padding_l(op.padding.begin(), op.padding.begin() + kdims);
        std::vector<size_t> padding_r(op.padding.begin() + kdims, op.padding.end());
        return {dnnl::prop_kind::forward_inference,
                dnnl::algorithm::convolution_auto,
                m.at(DNNL_ARG_SRC),
                m.at(DNNL_ARG_WEIGHTS),
                m.at(DNNL_ARG_DST),
                to_dnnl_dims(op.stride),
                to_dnnl_dims(dilation),
                to_dnnl_dims(padding_l),
                to_dnnl_dims(padding_r)};
    }
};

} // namespace cpu
} // namespace MIGRAPHX_INLINE_NS
} // namespace migraphx