Struct rustc_mir::borrow_check::nll::liveness_map::NllLivenessMap

pub(crate) struct NllLivenessMap {
    pub from_local: IndexVec<Local, Option<LocalWithRegion>>,
    pub to_local: IndexVec<LocalWithRegion, Local>,
}

🔬 This is a nightly-only experimental API. (rustc_private)

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Map between Local and LocalWithRegion indices: this map is supplied to the liveness code so that it will only analyze those variables whose types contain regions.

Fields

from_local: IndexVec<Local, Option<LocalWithRegion>>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

For each local variable, contains either None (if the type has no regions) or Some(i) with a suitable index.

to_local: IndexVec<LocalWithRegion, Local>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

For each LocalWithRegion, maps back to the original Local index.

Methods

impl NllLivenessMap

pub fn compute(mir: &Mir) -> Self

🔬 This is a nightly-only experimental API. (rustc_private)

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Iterates over the variables in Mir and assigns each Local whose type contains regions a LocalWithRegion index. Returns a map for converting back and forth.

Trait Implementations

impl LiveVariableMap for NllLivenessMap

fn from_local(&self, local: Local) -> Option<Self::LiveVar>

🔬 This is a nightly-only experimental API. (rustc_private)

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type LiveVar = LocalWithRegion

🔬 This is a nightly-only experimental API. (rustc_private)

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fn from_live_var(&self, local: Self::LiveVar) -> Local

🔬 This is a nightly-only experimental API. (rustc_private)

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fn num_variables(&self) -> usize

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?