Enum OptFlag 

pub enum OptFlag {
    NoMemo,
    NoTCO,
    NoPeephole,
    NoBorrow,
    NoOptimize,
}

Per-function optimization control flags.

Annotations placed above ## To disable specific optimization passes for that function. This gives the programmer explicit control when an optimization hurts rather than helps (e.g., memoization on a function whose body is cheaper than a hash lookup).

Variants

NoMemo

## No Memo — disable auto-memoization (TLS FxHashMap cache)

NoTCO

## No TCO — disable tail-call elimination (loop conversion)

NoPeephole

## No Peephole — disable peephole patterns (swap, vec-fill, for-range, etc.)

NoBorrow

## No Borrow — disable readonly/mutable borrow analysis (&[T]/&mut [T] params)

NoOptimize

## No Optimize — disable ALL of the above (master switch)

Trait Implementations

impl Clone for OptFlag

fn clone(&self) -> OptFlag

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptFlag

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

Formats the value using the given formatter.

impl Hash for OptFlag

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for OptFlag

fn eq(&self, other: &OptFlag) -> 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 OptFlag

impl Eq for OptFlag

impl StructuralPartialEq for OptFlag