Module serde::lib::core::hint

1.27.0 · source · []
Expand description

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

Functions

black_boxExperimental

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

must_useExperimental

An identity function that causes an unused_must_use warning to be triggered if the given value is not used (returned, stored in a variable, etc) by the caller.

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

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