pub struct TargetDataLayout {
Show 15 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, pub c_enum_min_size: Integer,
}
Expand description

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

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§endian: Endian§i1_align: AbiAndPrefAlign§i8_align: AbiAndPrefAlign§i16_align: AbiAndPrefAlign§i32_align: AbiAndPrefAlign§i64_align: AbiAndPrefAlign§i128_align: AbiAndPrefAlign§f32_align: AbiAndPrefAlign§f64_align: AbiAndPrefAlign§pointer_size: Size§pointer_align: AbiAndPrefAlign§aggregate_align: AbiAndPrefAlign§vector_align: Vec<(Size, AbiAndPrefAlign)>

Alignments for vector types.

§instruction_address_space: AddressSpace§c_enum_min_size: Integer

Minimum size of #[repr(C)] enums (default I32 bits)

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impl TargetDataLayout

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pub fn parse_from_llvm_datalayout_string<'a>(
    input: &'a str
) -> Result<TargetDataLayout, TargetDataLayoutErrors<'a>>

Parse data layout from an llvm data layout string

This function doesn’t fill c_enum_min_size and it will always be I32 since it can not be determined from llvm string.

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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.

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pub fn ptr_sized_integer(&self) -> Integer

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

Trait Implementations§

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impl Debug for TargetDataLayout

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

Formats the value using the given formatter. Read more
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impl Default for TargetDataLayout

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fn default() -> TargetDataLayout

Creates an instance of TargetDataLayout.

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impl HasDataLayout for TargetDataLayout

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impl PartialEq<TargetDataLayout> for TargetDataLayout

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

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

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impl StructuralEq for TargetDataLayout

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impl StructuralPartialEq for TargetDataLayout

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

const: unstable · source§

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · 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.

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

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.

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: 64 bytes