Shaders #pragma exclude

#pragma exclude_renderers ps3 flash” should I use this if I make my game only for Android. Does it make my shader faster if I exclude unused platforms?

it will compile a bit faster, and it might take less memory on the program, you can also exclude a lot of other ones like GL and DirectX 11, also it will avoid crashing compilers that have different register numbers like Flash. So altogether is the proper way.