Function get_convolution_backward_data_algorithm 

pub fn get_convolution_backward_data_algorithm(
    handle: &Handle,
    filter: &FilterDescriptor,
    diff: &TensorDescriptor,
    conv: &ConvolutionDescriptor,
    grad: &TensorDescriptor,
    requested: i32,
) -> Result<Vec<BwdDataAlgoPerf>>

Heuristic-pick backward-data convolution algorithms.