pub struct MaybeRequiresStorage<'mir, 'tcx> {
    body: &'mir Body<'tcx>,
    borrowed_locals: RefCell<ResultsRefCursor<'mir, 'mir, 'tcx, MaybeBorrowedLocals>>,
}
Expand description

Dataflow analysis that determines whether each local requires storage at a given location; i.e. whether its storage can go away without being observed.

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§body: &'mir Body<'tcx>§borrowed_locals: RefCell<ResultsRefCursor<'mir, 'mir, 'tcx, MaybeBorrowedLocals>>

Implementations§

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impl<'mir, 'tcx> MaybeRequiresStorage<'mir, 'tcx>

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pub fn new(
    body: &'mir Body<'tcx>,
    borrowed_locals: &'mir Results<'tcx, MaybeBorrowedLocals>
) -> Self

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impl<'mir, 'tcx> MaybeRequiresStorage<'mir, 'tcx>

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fn check_for_move(&self, trans: &mut impl GenKill<Local>, loc: Location)

Kill locals that are fully moved and have not been borrowed.

Trait Implementations§

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impl<'mir, 'tcx> AnalysisDomain<'tcx> for MaybeRequiresStorage<'mir, 'tcx>

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type Domain = BitSet<Local>

The type that holds the dataflow state at any given point in the program.
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const NAME: &'static str = "requires_storage"

A descriptive name for this analysis. Used only for debugging. Read more
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fn bottom_value(&self, body: &Body<'tcx>) -> Self::Domain

Returns the initial value of the dataflow state upon entry to each basic block.
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fn initialize_start_block(&self, body: &Body<'tcx>, on_entry: &mut Self::Domain)

Mutates the initial value of the dataflow state upon entry to the START_BLOCK. Read more
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type Direction = Forward

The direction of this analysis. Either Forward or Backward.
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impl<'mir, 'tcx> GenKillAnalysis<'tcx> for MaybeRequiresStorage<'mir, 'tcx>

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type Idx = Local

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fn before_statement_effect(
    &self,
    trans: &mut impl GenKill<Self::Idx>,
    stmt: &Statement<'tcx>,
    loc: Location
)

See Analysis::apply_before_statement_effect.
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fn statement_effect(
    &self,
    trans: &mut impl GenKill<Self::Idx>,
    _: &Statement<'tcx>,
    loc: Location
)

See Analysis::apply_statement_effect.
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fn before_terminator_effect(
    &self,
    trans: &mut impl GenKill<Self::Idx>,
    terminator: &Terminator<'tcx>,
    loc: Location
)

See Analysis::apply_before_terminator_effect.
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fn terminator_effect(
    &self,
    trans: &mut impl GenKill<Self::Idx>,
    terminator: &Terminator<'tcx>,
    loc: Location
)

See Analysis::apply_terminator_effect.
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fn call_return_effect(
    &self,
    trans: &mut impl GenKill<Self::Idx>,
    _block: BasicBlock,
    return_places: CallReturnPlaces<'_, 'tcx>
)

See Analysis::apply_call_return_effect.
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fn yield_resume_effect(
    &self,
    trans: &mut impl GenKill<Self::Idx>,
    _resume_block: BasicBlock,
    resume_place: Place<'tcx>
)

See Analysis::apply_yield_resume_effect.
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fn switch_int_edge_effects<G: GenKill<Self::Idx>>(
    &self,
    _block: BasicBlock,
    _discr: &Operand<'tcx>,
    _edge_effects: &mut impl SwitchIntEdgeEffects<G>
)

See Analysis::apply_switch_int_edge_effects.

Auto Trait Implementations§

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impl<'mir, 'tcx> !RefUnwindSafe for MaybeRequiresStorage<'mir, 'tcx>

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impl<'mir, 'tcx> !Send for MaybeRequiresStorage<'mir, 'tcx>

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impl<'mir, 'tcx> !Sync for MaybeRequiresStorage<'mir, 'tcx>

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impl<'mir, 'tcx> Unpin for MaybeRequiresStorage<'mir, 'tcx>where
    'tcx: 'mir,

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impl<'mir, 'tcx> !UnwindSafe for MaybeRequiresStorage<'mir, 'tcx>

Blanket Implementations§

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impl<T> Any for Twhere
    T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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: 128 bytes