C++ enum class as a variable template parameter

Question

I'm trying to optimize out some function at compile time by using an enum class as a template parameter.

Say for example

enum class Color { RED, BLACK };

Now, I would like to define a method

void myMethod<Color c> () {
 if( c == Color::RED ) { ... }
 if( c == Color::BLACK ) { ... }
}

And I would like the compiler to make 2 copies of myMethod and eliminate the dead code during the optimisation (it's for CUDA kernels so speed and register usage is important to me)

However, seems like when I call the method using

void doSomething( const Color c ) {
 myMethod<c>();
}

MSVC complains with "expression must have a constant value". I was expecting the compiler to be clever enough to compile a version of myMethod with each possible version of the enum. Is that not the case ? Can I force it to, without an ugly switch in doSomething ?

Thanks for your help !