Struct VReg

pub struct VReg { /* private fields */ }

A virtual register. Contains a virtual register number and a class.

A virtual register (“vreg”) corresponds to an SSA value. All dataflow in the input program is specified via flow through a virtual register; even uses of specially-constrained locations, such as fixed physical registers, are done by using vregs, because we need the vreg’s live range in order to track the use of that location.

Implementations

impl VReg

pub const MAX_BITS: usize = 21usize

pub const MAX: usize = 2_097_151usize

pub const fn new(virt_reg: usize, class: RegClass) -> Self

pub const fn vreg(self) -> usize

pub const fn class(self) -> RegClass

pub const fn invalid() -> Self

pub const fn bits(self) -> usize

Trait Implementations

impl Clone for VReg

fn clone(&self) -> VReg

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VReg

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

Formats the value using the given formatter.

impl Display for VReg

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

Formats the value using the given formatter.

impl From<u32> for VReg

fn from(value: u32) -> Self

Converts to this type from the input type.

impl Hash for VReg

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 VReg

fn cmp(&self, other: &VReg) -> 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 VReg

fn eq(&self, other: &VReg) -> 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 VReg

fn partial_cmp(&self, other: &VReg) -> 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 Copy for VReg

impl Eq for VReg

impl StructuralPartialEq for VReg