Enum RuleFamily 

pub enum RuleFamily {
    Lowering,
    Fusion,
    Algebraic,
}

Which family a Rule belongs to. Drives the phase ordering in RuleRegistry::optimize_to_fixpoint: lowering runs to fixpoint first, then fusion. This ordering ensures inverse rule pairs converge cleanly — fusion has the last word, and its output is what the executor runs.

Variants

Lowering

High-level op → primitive subgraph. Always grows the graph.

Fusion

Recognized primitive subgraph → fused op. Always shrinks the graph (the fused op replaces the canonical subgraph’s output; the orphaned subgraph nodes remain in the arena but are unreachable from the user’s roots after consumer rewiring).

Algebraic

Algebraic identity rewrites that don’t fit the lowering or fusion shapes: cast elimination (Cast(src→dst) → Op(dst) becomes Op(src) when the consumer supports the source dtype), constant folding, identity elimination, common- subexpression hoisting. Runs after fusion so cast-elimination can’t break fusion-pattern dtype expectations.

Trait Implementations

impl Clone for RuleFamily

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 RuleFamily

impl Debug for RuleFamily

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

Formats the value using the given formatter.

impl Eq for RuleFamily

impl Hash for RuleFamily

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 PartialEq for RuleFamily

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RuleFamily