Struct rustc_target::abi::TargetDataLayout
source · [−]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.
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: AddressSpacec_enum_min_size: IntegerMinimum size of #[repr(C)] enums (default I32 bits)
Implementations
sourceimpl TargetDataLayout
impl TargetDataLayout
pub fn parse<'a>(
target: &'a Target
) -> Result<TargetDataLayout, TargetDataLayoutErrors<'a>>
sourcepub fn obj_size_bound(&self) -> u64
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
sourceimpl Default for TargetDataLayout
impl Default for TargetDataLayout
sourcefn default() -> TargetDataLayout
fn default() -> TargetDataLayout
Creates an instance of TargetDataLayout.
sourceimpl HasDataLayout for 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
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
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