Enum Pin 

pub enum Pin {
    Never,
    Eager,
    At(Tier),
}

A per-opt tier override (HOTSWAP §8 ## Tier <kw> <eager|t1|t2|t3|never>).

Variants

Never

Allowed by config but pinned off the tiering ladder — never run by tiering (distinct from ## No <opt>, which forbids it and cascades through normalize).

Eager

Run as soon as the unit is optimized at all (any tier ≥ T1), ignoring cost.

At(Tier)

Run once this tier is reached.

Trait Implementations

impl Clone for Pin

fn clone(&self) -> Pin

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Pin

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Pin

fn eq(&self, other: &Pin) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Pin

impl Eq for Pin

impl StructuralPartialEq for Pin