Enum OptLevel

#[non_exhaustive]
pub enum OptLevel {
    None,
    Speed,
    SpeedAndSize,
}

Possible optimization levels for the Cranelift codegen backend.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None

No optimizations performed, minimizes compilation time by disabling most optimizations.

Speed

Generates the fastest possible code, but may take longer.

SpeedAndSize

Similar to speed, but also performs transformations aimed at reducing code size.

Trait Implementations

impl Clone for OptLevel

fn clone(&self) -> OptLevel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OptLevel

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OptLevel

fn deserialize<__D>( __deserializer: __D, ) -> Result<OptLevel, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for OptLevel

fn eq(&self, other: &OptLevel) -> 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 Serialize for OptLevel

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for OptLevel

impl Eq for OptLevel

impl StructuralPartialEq for OptLevel