Struct MachLabel

pub struct MachLabel(/* private fields */);

A label refers to some offset in a MachBuffer. It may not be resolved at the point at which it is used by emitted code; the buffer records “fixups” for references to the label, and will come back and patch the code appropriately when the label’s location is eventually known.

Implementations

impl MachLabel

pub fn from_u32(x: u32) -> Self

Create a new instance from a u32.

pub fn as_u32(self) -> u32

Return the underlying index value as a u32.

pub fn as_bits(self) -> u32

Return the raw bit encoding for this instance.

Warning: the raw bit encoding is opaque and has no guaranteed correspondence to the entity’s index. It encodes the entire state of this index value: either a valid index or an invalid-index sentinel. The value returned by this method should only be passed to from_bits.

pub fn from_bits(x: u32) -> Self

Create a new instance from the raw bit encoding.

Warning: the raw bit encoding is opaque and has no guaranteed correspondence to the entity’s index. It encodes the entire state of this index value: either a valid index or an invalid-index sentinel. The value returned by this method should only be given bits from as_bits.

impl MachLabel

pub fn from_block(bindex: Block) -> MachLabel

Get a label for a block. (The first N MachLabels are always reserved for the N blocks in the vcode.)

pub fn to_string(&self) -> String

Creates a string representing this label, for convenience.

Trait Implementations

impl Clone for MachLabel

fn clone(&self) -> MachLabel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MachLabel

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

Formats the value using the given formatter.

impl Default for MachLabel

fn default() -> Self

Returns the “default value” for a type.

impl EntityRef for MachLabel

fn new(index: usize) -> Self

Create a new entity reference from a small integer. This should crash if the requested index is not representable.

fn index(self) -> usize

Get the index that was used to create this entity reference.

impl From<Label> for MachLabel

Available on crate feature x86 only.

fn from(value: Label) -> Self

Converts to this type from the input type.

impl From<MachLabel> for Label

Available on crate feature x86 only.

fn from(value: MachLabel) -> Self

Converts to this type from the input type.

impl Hash for MachLabel

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 Ord for MachLabel

fn cmp(&self, other: &MachLabel) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MachLabel

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for MachLabel

fn partial_cmp(&self, other: &MachLabel) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl ReservedValue for MachLabel

fn reserved_value() -> MachLabel

Create an instance of the reserved value.

fn is_reserved_value(&self) -> bool

Checks whether value is the reserved one.

impl Copy for MachLabel

impl Eq for MachLabel

impl StructuralPartialEq for MachLabel