Struct OptNode 

pub struct OptNode {
    pub opt: Opt,
    pub depth: usize,
    pub role: OptRole,
    pub has_children: bool,
    pub requires: Vec<Opt>,
    pub preempts: Vec<Opt>,
    pub preempted_by: Vec<Opt>,
    pub depends_on: Vec<Opt>,
}

One node of a program’s optimization relationship tree: an optimization that is in play for that program, with its nesting depth and its edges.

Fields

opt: Opt

The optimization.

depth: usize

Nesting depth (0 = root) for tree indentation — under its requires-parent or its per-program dependency parent.

role: OptRole

Why it is in play.

has_children: bool

Whether any in-play optimization depends on this one (drives the chevron).

requires: Vec<Opt>

What it requires (static, from the registry).

preempts: Vec<Opt>

What it takes precedence over (static, from the registry).

preempted_by: Vec<Opt>

The winners that beat this optimization on THIS program (from the trace).

depends_on: Vec<Opt>

The optimizations this one only fired because of, on THIS program (the emergent dependencies the all-on evaluation revealed — distinct from the universal requires).

Trait Implementations

impl Clone for OptNode

fn clone(&self) -> OptNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptNode

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

Formats the value using the given formatter.