Is bit shifting operation in shaders expensive?

Does anyone knows if bit shifting is an expensive operation in shaders ?

I could do it in vertex shader instead of pixel shaders. But in general, does anyone knows if bit shifting is an expensive operation in shader?

 

It depends on the GPU. Modern desktop GPUs it’s the same cost as any other basic operation. For some very early DX10 GPUs and some older mobile GPUs, it could be slow.