Does LLVM do simple arithmetic before compiling?

Question

I often see things in codes like 60*60 instead of 3600 . Are they both the same compiler? Is the precompiler replacing 60 * 60 with 3600 for you?

Answer 1

Yes, constant expressions are evaluated at compile time.

Answer 2

To be completely correct, this is not required, but most compilers do this. Read about the permanent crease .