Why does “noreturn” function return?

Question

I read this question about noreturn attribute, which is used for functions that don\'t return to the caller.

Then I have made a program in C.

Answer 1

no return function does not save the registers on the entry as it is not necessary. It makes the optimisations easier. Great for the scheduler routine for example.

See the example here: https://godbolt.org/g/2N3THC and spot the difference