How can I use tag dispatch in MSVC without paying for it?

Question

I am trying to use tag dispatch in C++ to enforce safety at runtime, but discovered via Compiler Explorer that MSVC fumbles this otherwise zero-cost abstraction by representing empty class tag types with a single byte: https://godbolt.org/z/Y7GxrPvaz.

class GuardType;

class TagType {
    friend GuardType;
    explicit TagType() = default;
};

// Imagine constructing this guard enforces a certain program state.
struct GuardType {
    explicit GuardType() = default;
    TagType GetTag() const { return TagType{}; }
};

void Example(TagType, TagType, TagType, TagType);

void Test() {
    const GuardType guard;
    const TagType tag = guard.GetTag();
    Example(tag, tag, tag, tag);
    Example(tag, tag, tag, tag);
}

GCC and Clang optimize away the empty class tag type entirely. In order for tag dispatch to be a suitable replacement for the code pattern it is replacing in my project, it must have no overhead whatsoever. I have read https://learn.microsoft.com/en-us/cpp/cpp/microsoft-specific-modifiers and found nothing that could help me. I understand this failing is probably for ABI compatibility of passing existing empty classes by value, but is there any way to make new empty classes optimize well on MSVC?