Enum rustc_const_eval::interpret::place::Place

source ·

pub(super) enum Place<Prov: Provenance = CtfeProvenance> {
    Ptr(MemPlace<Prov>),
    Local {
        local: Local,
        offset: Option<Size>,
        locals_addr: usize,
    },
}

Variants§

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Ptr(MemPlace<Prov>)

A place referring to a value allocated in the Memory system.

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Local

Fields

§local: Local

§offset: Option<Size>

§locals_addr: usize

To support alloc-free locals, we are able to write directly to a local. The offset indicates where in the local this place is located; if it is None, no projection has been applied. Such projections are meaningful even if the offset is 0, since they can change layouts. (Without that optimization, we’d just always be a MemPlace.) Local places always refer to the current stack frame, so they are unstable under function calls/returns and switching betweens stacks of different threads! We carry around the address of the locals buffer of the correct stack frame as a sanity chec to be able to catch some cases of using a dangling Place.

This variant shall not be used for unsized types – those must always live in memory.

Enum rustc_const_eval::interpret::place::Place

Variants§

Ptr(MemPlace<Prov>)

Local

Fields

Trait Implementations§

impl<Prov: Clone + Provenance> Clone for Place<Prov>

fn clone(&self) -> Place<Prov>

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

impl<Prov: Debug + Provenance> Debug for Place<Prov>

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

impl<Prov: Copy + Provenance> Copy for Place<Prov>

Auto Trait Implementations§

impl<Prov> DynSend for Place<Prov>where Prov: DynSend,

impl<Prov> DynSync for Place<Prov>where Prov: DynSync,

impl<Prov> Freeze for Place<Prov>where Prov: Freeze,

impl<Prov> RefUnwindSafe for Place<Prov>where Prov: RefUnwindSafe,

impl<Prov> Send for Place<Prov>where Prov: Send,

impl<Prov> Sync for Place<Prov>where Prov: Sync,

impl<Prov> Unpin for Place<Prov>where Prov: Unpin,

impl<Prov> UnwindSafe for Place<Prov>where Prov: UnwindSafe,

Blanket Implementations§

impl<T> Aligned for T

const ALIGN: Alignment = _

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

fn type_id(&self) -> TypeId

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,

fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,

fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<T, R> CollectAndApply<T, R> for T

fn collect_and_apply<I, F>(iter: I, f: F) -> Rwhere I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

type Output = R

impl<T> Filterable for T

fn filterable( self, filter_name: &'static str ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

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

fn into(self) -> U

impl<P> IntoQueryParam<P> for P

fn into_query_param(self) -> P

impl<T> MaybeResult<T> for T

type Error = !

fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

impl<T> Pointable for T

const ALIGN: usize = _

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Same for T

type Output = T

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<'tcx, T> ToPredicate<'tcx, T> for T

fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

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

type Error = Infallible

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

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

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

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

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

fn vzip(self) -> V

impl<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,

default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed ) -> T

impl<T> WithSubscriber for T

impl<Prov> DynSend for Place<Prov>
where Prov: DynSend,

impl<Prov> DynSync for Place<Prov>
where Prov: DynSync,

impl<Prov> Freeze for Place<Prov>
where Prov: Freeze,

impl<Prov> RefUnwindSafe for Place<Prov>
where Prov: RefUnwindSafe,

impl<Prov> Send for Place<Prov>
where Prov: Send,

impl<Prov> Sync for Place<Prov>
where Prov: Sync,

impl<Prov> Unpin for Place<Prov>
where Prov: Unpin,

impl<Prov> UnwindSafe for Place<Prov>
where Prov: UnwindSafe,

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

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

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

impl<T> ToOwned for T
where T: Clone,

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

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

impl<'a, T> Captures<'a> for T
where T: ?Sized,

impl<T> ErasedDestructor for T
where T: 'static,

impl<T> MaybeSendSync for T
where T: Send + Sync,