Enum cranelift_codegen::VCodeConstantData

source ·
pub enum VCodeConstantData {
    Pool(Constant, ConstantData),
    WellKnown(&'static [u8]),
    Generated(ConstantData),
    U64([u8; 8]),
}
Expand description

Identify the different types of constant that can be inserted into VCodeConstants. Tracking these separately instead of as raw byte buffers allows us to avoid some duplication.

Variants§

§

Pool(Constant, ConstantData)

A constant already present in the Cranelift IR ConstantPool.

§

WellKnown(&'static [u8])

A reference to a well-known constant value that is statically encoded within the compiler.

§

Generated(ConstantData)

A constant value generated during lowering; the value may depend on the instruction context which makes it difficult to de-duplicate–if possible, use other variants.

§

U64([u8; 8])

A constant of at most 64 bits. These are deduplicated as well. Stored as a fixed-size array of u8 so that we do not encounter endianness problems when cross-compiling.

Implementations§

source§

impl VCodeConstantData

source

pub fn as_slice(&self) -> &[u8]

Retrieve the constant data as a byte slice.

source

pub fn alignment(&self) -> u32

Calculate the alignment of the constant data.

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.