Struct rustc_target::abi::TargetDataLayout[−][src]

pub struct TargetDataLayout {Show fields
    pub endian: Endian,
    pub i1_align: AbiAndPrefAlign,
    pub i8_align: AbiAndPrefAlign,
    pub i16_align: AbiAndPrefAlign,
    pub i32_align: AbiAndPrefAlign,
    pub i64_align: AbiAndPrefAlign,
    pub i128_align: AbiAndPrefAlign,
    pub f32_align: AbiAndPrefAlign,
    pub f64_align: AbiAndPrefAlign,
    pub pointer_size: Size,
    pub pointer_align: AbiAndPrefAlign,
    pub aggregate_align: AbiAndPrefAlign,
    pub vector_align: Vec<(Size, AbiAndPrefAlign)>,
    pub instruction_address_space: AddressSpace,
}

Expand description

Parsed Data layout for a target, which contains everything needed to compute layouts.

Fields

endian: Endiani1_align: AbiAndPrefAligni8_align: AbiAndPrefAligni16_align: AbiAndPrefAligni32_align: AbiAndPrefAligni64_align: AbiAndPrefAligni128_align: AbiAndPrefAlignf32_align: AbiAndPrefAlignf64_align: AbiAndPrefAlignpointer_size: Sizepointer_align: AbiAndPrefAlignaggregate_align: AbiAndPrefAlignvector_align: Vec<(Size, AbiAndPrefAlign)>

Alignments for vector types.

instruction_address_space: AddressSpace

Implementations

impl TargetDataLayout

pub fn parse(target: &Target) -> Result<TargetDataLayout, String>

pub fn obj_size_bound(&self) -> u64

Returns exclusive upper bound on object size.

The theoretical maximum object size is defined as the maximum positive isize value. This ensures that the offset semantics remain well-defined by allowing it to correctly index every address within an object along with one byte past the end, along with allowing isize to store the difference between any two pointers into an object.

The upper bound on 64-bit currently needs to be lower because LLVM uses a 64-bit integer to represent object size in bits. It would need to be 1 << 61 to account for this, but is currently conservatively bounded to 1 << 47 as that is enough to cover the current usable address space on 64-bit ARMv8 and x86_64.

pub fn ptr_sized_integer(&self) -> Integer

pub fn vector_align(&self, vec_size: Size) -> AbiAndPrefAlign

Trait Implementations

impl Default for TargetDataLayout

fn default() -> TargetDataLayout

Creates an instance of TargetDataLayout.

impl HasDataLayout for TargetDataLayout

fn data_layout(&self) -> &TargetDataLayout

Auto Trait Implementations

impl RefUnwindSafe for TargetDataLayout

impl Send for TargetDataLayout

impl Sync for TargetDataLayout

impl Unpin for TargetDataLayout

impl UnwindSafe for TargetDataLayout

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

pub fn from(t: T) -> T

Performs the conversion.

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

pub fn into(self) -> U

Performs the conversion.

impl<T> MaybeResult<T> for T

type Error = !

pub fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T

pub fn to_result(Self) -> Result<T, <T as MaybeResult<T>>::Error>

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

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

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.

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

Performs the conversion.

Layout

Note: Most layout information is completely unstable and may be different between compiler versions and platforms. 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: 64 bytes