Enum rustc_mir::transform::promote_consts::TempState

pub enum TempState {
    Undefined,
    Defined {
        location: Location,
        uses: usize,
    },
    Unpromotable,
    PromotedOut,
}

State of a temporary during collection and promotion.

Variants

Undefined

No references to this temp.

Defined

One direct assignment and any number of direct uses. A borrow of this temp is promotable if the assigned value is qualified as constant.

Fields of Defined

location: Locationuses: usize

Unpromotable

Any other combination of assignments/uses.

PromotedOut

This temp was part of an rvalue which got extracted during promotion and needs cleanup.

Implementations

impl TempState

pub fn is_promotable(&self) -> bool

Trait Implementations

impl Clone for TempState

fn clone(&self) -> TempState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TempState

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

Formats the value using the given formatter.

impl PartialEq<TempState> for TempState

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for TempState

impl Eq for TempState

impl StructuralEq for TempState

impl StructuralPartialEq for TempState