Struct rustc_target::abi::call::CastTarget

pub struct CastTarget {
    pub prefix: [Option<Reg>; 8],
    pub rest: Uniform,
    pub attrs: ArgAttributes,
}

Describes the type used for PassMode::Cast.

Passing arguments in this mode works as follows: the registers in the prefix (the ones that are Some) get laid out one after the other (using repr(C) layout rules). Then the rest.unit register type gets repeated often enough to cover rest.size. This describes the actual type used for the call; the Rust type of the argument is then transmuted to this ABI type (and all data in the padding between the registers is dropped).

Fields

prefix: [Option<Reg>; 8]

rest: Uniform

attrs: ArgAttributes

Implementations

impl CastTarget

pub fn pair(a: Reg, b: Reg) -> CastTarget

pub fn size<C: HasDataLayout>(&self, _cx: &C) -> Size

pub fn align<C: HasDataLayout>(&self, cx: &C) -> Align

pub fn eq_abi(&self, other: &Self) -> bool

Checks if these two CastTarget are equal enough to be considered “the same for all function call ABIs”.

Trait Implementations

impl Clone for CastTarget

fn clone(&self) -> CastTarget

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CastTarget

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

Formats the value using the given formatter.

impl From<Reg> for CastTarget

fn from(unit: Reg) -> CastTarget

Converts to this type from the input type.

impl From<Uniform> for CastTarget

fn from(uniform: Uniform) -> CastTarget

Converts to this type from the input type.

impl Hash for CastTarget

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<__CTX> HashStable<__CTX> for CastTargetwhere __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl PartialEq<CastTarget> for CastTarget

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for CastTarget

impl StructuralEq for CastTarget

impl StructuralPartialEq for CastTarget

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 168 bytes