Enum rustc_mir_transform::const_prop::ConstPropMode

enum ConstPropMode {
    FullConstProp,
    OnlyInsideOwnBlock,
    OnlyPropagateInto,
    NoPropagation,
}

The mode that ConstProp is allowed to run in for a given Local.

Variants

FullConstProp

The Local can be propagated into and reads of this Local can also be propagated.

OnlyInsideOwnBlock

The Local can only be propagated into and from its own block.

OnlyPropagateInto

The Local can be propagated into but reads cannot be propagated.

NoPropagation

The Local cannot be part of propagation at all. Any statement referencing it either for reading or writing will not get propagated.

Trait Implementations

impl Clone for ConstPropMode

fn clone(&self) -> ConstPropMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ConstPropMode

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

Formats the value using the given formatter.

impl PartialEq<ConstPropMode> for ConstPropMode

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

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

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

This method tests for !=.

impl Copy for ConstPropMode

impl StructuralPartialEq for ConstPropMode

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte

Size for each variant:

• FullConstProp: 0 bytes
• OnlyInsideOwnBlock: 0 bytes
• OnlyPropagateInto: 0 bytes
• NoPropagation: 0 bytes