Struct PReg 

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

A physical register: an index into the target’s register file.

What the number means (its name, hardware encoding, and class) is the target’s business; see Target::reg. The x86-64 target names its registers as constants, such as x86_64::RAX.

Examples

use backend_lang::x86_64::{self, RAX, RDI};

assert_eq!(x86_64::TARGET.reg(RAX).name(), "rax");
assert!(RAX.index() < RDI.index());

Implementations

impl PReg

pub const fn new(index: usize) -> Option<PReg>

The physical register with index index, or None past MAX_PREGS.

Examples

use backend_lang::PReg;

assert_eq!(PReg::new(3).map(PReg::index), Some(3));
assert_eq!(PReg::new(128), None);

pub const fn index(self) -> usize

The register’s index in the target’s register file.

Examples

use backend_lang::x86_64::RCX;

assert_eq!(RCX.index(), 1);

Trait Implementations

impl Clone for PReg

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PReg

impl Debug for PReg

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

Formats the value using the given formatter.

impl Eq for PReg

impl From<PReg> for Operand

fn from(r: PReg) -> Operand

Converts to this type from the input type.

impl From<PReg> for Loc

fn from(r: PReg) -> Loc

Converts to this type from the input type.

impl From<PReg> for Source

fn from(r: PReg) -> Source

Converts to this type from the input type.

impl From<PReg> for Reg

fn from(p: PReg) -> Reg

Converts to this type from the input type.

impl FromIterator<PReg> for RegSet

fn from_iter<I: IntoIterator<Item = PReg>>(iter: I) -> RegSet

Creates a value from an iterator.

impl Hash for PReg

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 PReg

fn cmp(&self, other: &Self) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for PReg

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for PReg

fn partial_cmp(&self, other: &Self) -> 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 StructuralPartialEq for PReg