NodeFlowData in rustc_middle::mir::coverage - Rust
Description: Data representing a view of some underlying graph, in which each node’s successors have been merged into a single “supernode”.

Skip to main content

## NodeFlowData

# Struct NodeFlowData

Source

    pub struct NodeFlowData<Node: Idx> {
        pub supernodes: IndexVec<Node, Node>,
        pub succ_supernodes: IndexVec<Node, Node>,
    }

Expand description

Data representing a view of some underlying graph, in which each node’s successors have been merged into a single “supernode”.

The resulting supernodes have no obvious meaning on their own. However, merging successor nodes means that a node’s out-edges can all be combined into a single out-edge, whose flow is the same as the flow (execution count) of its corresponding node in the original graph.

With all node flows now in the original graph now represented as edge flows in the merged graph, it becomes possible to analyze the original node flows using techniques for analyzing edge flows.

## Fields§

§`supernodes: IndexVec<Node, Node>`

Maps each node to the supernode that contains it, indicated by some arbitrary “root” node that is part of that supernode.

§`succ_supernodes: IndexVec<Node, Node>`

For each node, stores the single supernode that all of its successors have been merged into.

(Note that each node in a supernode can potentially have a different successor supernode from its peers.)

## Trait Implementations§

Source§

### impl<Node: Clone + Idx> Clone for NodeFlowData<Node>

Source§

#### fn clone(&self) -> NodeFlowData<Node>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from `source`. Read more
Source§

### impl<Node: Debug + Idx> Debug for NodeFlowData<Node>

Source§

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

Formats the value using the given formatter. Read more
Source§

### impl<'tcx, Node: Idx, __D: TyDecoder<'tcx>> Decodable<__D> for NodeFlowData<Node>
where IndexVec<Node, Node>: Decodable<__D>,

Source§

#### fn decode(__decoder: &mut __D) -> Self

Source§

### impl<'tcx, Node: Idx, __E: TyEncoder<'tcx>> Encodable<__E> for NodeFlowData<Node>
where IndexVec<Node, Node>: Encodable<__E>,

Source§

#### fn encode(&self, __encoder: &mut __E)

Source§

### impl<Node: Hash + Idx> Hash for NodeFlowData<Node>

Source§

#### fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given `Hasher`. Read more
1.3.0 · Source§

#### fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given `Hasher`. Read more
Source§

### impl<Node> StableHash for NodeFlowData<Node>
where Node: StableHash + Idx,

Source§

#### fn stable_hash<__Hcx: StableHashCtxt>( &self, __hcx: &mut __Hcx, __hasher: &mut StableHasher, )

## Auto Trait Implementations§

§

### impl<Node> DynSend for NodeFlowData<Node>
where Node: DynSend,

§

### impl<Node> DynSync for NodeFlowData<Node>
where Node: DynSync,

§

### impl<Node> Freeze for NodeFlowData<Node>

§

### impl<Node> RefUnwindSafe for NodeFlowData<Node>
where Node: RefUnwindSafe,

§

### impl<Node> Send for NodeFlowData<Node>
where Node: Send,

§

### impl<Node> Sync for NodeFlowData<Node>
where Node: Sync,

§

### impl<Node> Unpin for NodeFlowData<Node>
where Node: Unpin,

§

### impl<Node> UnsafeUnpin for NodeFlowData<Node>

§

### impl<Node> UnwindSafe for NodeFlowData<Node>
where Node: UnwindSafe,

## Blanket Implementations§

Source§

### impl<T> Aligned for T

Source§

#### const ALIGN: Alignment

Alignment of `Self`.
Source§

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

Source§

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
Source§

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

Source§

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

### impl<T> CloneToUninit for T
where T: Clone,

Source§

#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
Source§

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

Source§

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

Equivalent to `f(&iter.collect::<Vec<_>>())`.

Source§

#### type Output = R

Source§

### impl<'tcx, T> DepNodeKey<'tcx> for T
where T: StableHash + Debug,

Source§

#### default fn key_fingerprint_style() -> KeyFingerprintStyle

Source§

#### default fn to_fingerprint(&self, tcx: TyCtxt<'tcx>) -> Fingerprint

This method turns a query key into an opaque `Fingerprint` to be used in `DepNode`.
Source§

#### default fn try_recover_key(_: TyCtxt<'tcx>, _: &DepNode) -> Option<T>

This method tries to recover the query key from the given `DepNode`, something which is needed when forcing `DepNode`s during red-green evaluation. The query system will only call this method if `fingerprint_style()` is not `FingerprintStyle::Opaque`. It is always valid to return `None` here, in which case incremental compilation will treat the query as having changed instead of forcing it.
Source§

### impl<T> DynClone for T
where T: Clone,

Source§

#### fn __clone_box(&self, _: Private) -> *mut ()

Source§

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

Source§

### impl<T> From<T> for T

Source§

#### fn from(t: T) -> T

Returns the argument unchanged.

Source§

### impl<T> Instrument for T

Source§

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

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more
Source§

#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more
Source§

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

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.

Source§

### impl<T> IntoEither for T

Source§

#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
Source§

#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
Source§

### impl<K> IntoQueryKey<K> for K

Source§

#### fn into_query_key(self) -> K

Argument conversion from `Self` to `K`. This should always be a very cheap conversion, e.g. `LocalDefId::to_def_id`.
Source§

### impl<T> MaybeResult<T> for T

Source§

#### type Error = !

Source§

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

Source§

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

Source§

### impl<T> Pointable for T

Source§

#### const ALIGN: usize

The alignment of pointer.
Source§

#### type Init = T

The type for initializers.
Source§

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

Initializes a with the given initializer. Read more
Source§

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

Dereferences the given pointer. Read more
Source§

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

Mutably dereferences the given pointer. Read more
Source§

#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

### impl<T> Same for T

Source§

#### type Output = T

Should always be `Self`
Source§

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

Source§

#### type Owned = T

The resulting type after obtaining ownership.
Source§

#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

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

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

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

Source§

#### type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

### impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

Source§

#### fn upcast(self, interner: I) -> U

Source§

### impl<I, T> UpcastFrom<I, T> for T

Source§

#### fn upcast_from(from: T, _tcx: I) -> T

Source§

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

Source§

#### fn vzip(self) -> V

Source§

### impl<T> WithSubscriber for T

Source§

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

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more
Source§

#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

## 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: 48 bytes