Function is_cuda_backend_handle

src/framework/core/backend.cpp:28–39

// register as "ROCm" and get their own BackendType::Hip. The names are spelled out here
// instead of pulled from ggml-cuda.h/ggml-vulkan.h because those headers resolve against the
// backend's own build flags, which are not visible from this translation unit.
struct BackendRegNames {
    BackendType  type;
    const char * names[3];  // unused entries are nullptr
};

constexpr BackendRegNames k_backend_reg_names[] = {
    {BackendType::Cuda,   {"CUDA", "MUSA", nullptr}},
    {BackendType::Hip,    {"ROCm", nullptr, nullptr}},
    {BackendType::Vulkan, {"Vulkan", nullptr, nullptr}},
    {BackendType::Metal,  {"MTL", nullptr, nullptr}},
};

bool reg_name_matches(BackendType type, const char * reg_name) {
    if (reg_name == nullptr) {