Function compile_gpu_d4_gated 

pub fn compile_gpu_d4_gated(
    cnf: &GpuCnf,
    provider: &Arc<CudaKernelProvider>,
    config: &GpuCompileConfig,
    compile_needed: &TrackedCudaSlice<u32>,
) -> Result<GpuXgcf>

Compile a device-resident CNF into a device-resident XGCF circuit, skipping work on the device when compile_needed is 0.