Module core::hint

Hints to compiler that affects how code should be emitted or optimized. Hints may be compile time or runtime.

Functions

black_box

Experimental

An identity function that hints to the compiler to be maximally pessimistic about what black_box could do.

spin_loop

Emits a machine instruction to signal the processor that it is running in a busy-wait spin-loop (“spin lock”).

unreachable_unchecked^⚠

Informs the compiler that this point in the code is not reachable, enabling further optimizations.