Struct LoopStructure 

pub struct LoopStructure {
    pub header: LcnfVarId,
    pub body_vars: HashSet<LcnfVarId>,
    pub exit_vars: HashSet<LcnfVarId>,
    pub nest_depth: u32,
}

Identifies a loop in the LCNF control-flow graph.

In ANF / LCNF, loops manifest as (mutually) recursive function bindings. The “header” is the function id that forms the back-edge target.

Fields

header: LcnfVarId

The variable id of the loop header (recursive entry point).

body_vars: HashSet<LcnfVarId>

All variables defined inside the loop body.

exit_vars: HashSet<LcnfVarId>

Variables that are live on loop exit (used outside the loop).

nest_depth: u32

Nesting depth (0 = outermost loop).

Trait Implementations

impl Clone for LoopStructure

fn clone(&self) -> LoopStructure

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LoopStructure

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

Formats the value using the given formatter.