Function to_string

compiler/test/kernel/common/src/cc_proxy.cpp:96–105

    return res;
}
std::string to_string(Layout layout) {
    std::stringstream ss;
    ss << "[";
    for (int i = 0; i < layout.nr_dim; ++i) {
        ss << layout.dims[i] << "(" << layout.stride[i] << ")"
           << ", ";
    }
    ss << "]";
    return ss.str();
}
struct FreePtr {
    void operator()(void* ptr) { free(ptr); }
};