Enum PeepInstr 

pub enum PeepInstr {
    Const(i64),
    Add,
    Sub,
    Mul,
    Div,
    Neg,
    Load(String),
    Store(String),
    Branch(String),
    Jump(String),
    Ret,
    Dup,
    Pop,
    Swap,
    Nop,
}

A single instruction in the peephole instruction model.

The instruction set is intentionally small: it covers the stack-machine primitives that appear in common IR back-ends and for which standard peephole identities are well-known.

Variants

Const(i64)

Push an immediate integer constant.

Add

Integer addition (pops two, pushes one).

Sub

Integer subtraction (pops two, pushes one).

Mul

Integer multiplication (pops two, pushes one).

Div

Integer division (pops two, pushes one).

Neg

Arithmetic negation (pops one, pushes one).

Load(String)

Load the value of a named variable.

Store(String)

Store the top-of-stack into a named variable.

Branch(String)

Conditional branch to the named label.

Jump(String)

Unconditional jump to the named label.

Ret

Return from the current function.

Dup

Duplicate the top-of-stack.

Pop

Discard the top-of-stack.

Swap

Swap the top two stack values.

Nop

No-operation (placeholder; removed by the dead-nop rule).

Trait Implementations

impl Clone for PeepInstr

fn clone(&self) -> PeepInstr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PeepInstr

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

Formats the value using the given formatter.

impl Eq for PeepInstr

impl PartialEq for PeepInstr

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PeepInstr