Struct Pressure 

pub struct Pressure { /* private fields */ }

How many values want a register at each point, and how many registers there are for them.

Implementations

impl Pressure

pub fn of(func: &Func, order: &Order, live: &Live, env: &Env) -> Self

Counts the values and the registers at every point of a function.

Panics

Panics on a function with more points than a table can index, which no machine has the memory to have handed it.

pub fn wanted(&self, class: RegClass, point: Point) -> u32

How many values of a class want a register at a point.

pub fn room(&self, class: RegClass, point: Point) -> u32

How many registers of a class there are at a point.

pub fn excess(&self, class: RegClass, point: Point) -> u32

How many of the values of a class live at a point have to be in memory there, at the least.

pub fn peak(&self, class: RegClass) -> u32

The most values of a class that want a register at any one point.

pub fn over(&self, class: RegClass) -> impl Iterator<Item = Point> + '_

The points where more values of a class want a register than there are registers, in order.

Trait Implementations

impl Clone for Pressure

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pressure

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

Formats the value using the given formatter.

impl Default for Pressure

fn default() -> Self

Returns the “default value” for a type.