Struct rustc_middle::mir::BasicBlocks

source ·
pub struct BasicBlocks<'tcx> {
    basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>,
    cache: Cache,
}

Fields§

§basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>§cache: Cache

Implementations§

source§

impl<'tcx> BasicBlocks<'tcx>

source

pub fn new(basic_blocks: IndexVec<BasicBlock, BasicBlockData<'tcx>>) -> Self

source

pub fn is_cfg_cyclic(&self) -> bool

Returns true if control-flow graph contains a cycle reachable from the START_BLOCK.

source

pub fn dominators(&self) -> &Dominators<BasicBlock>

source

pub fn predecessors(&self) -> &IndexVec<BasicBlock, SmallVec<[BasicBlock; 4]>>

Returns predecessors for each basic block.

source

pub fn reverse_postorder(&self) -> &[BasicBlock]

Returns basic blocks in a reverse postorder.

See traversal::reverse_postorder’s docs to learn what is preorder traversal.

source

pub fn switch_sources( &self, ) -> &FxHashMap<(BasicBlock, BasicBlock), SmallVec<[Option<u128>; 1]>>

switch_sources()[&(target, switch)] returns a list of switch values that lead to a target block from a switch block.

source

pub fn as_mut(&mut self) -> &mut IndexVec<BasicBlock, BasicBlockData<'tcx>>

Returns mutable reference to basic blocks. Invalidates CFG cache.

source

pub fn as_mut_preserves_cfg( &mut self, ) -> &mut IndexVec<BasicBlock, BasicBlockData<'tcx>>

Get mutable access to basic blocks without invalidating the CFG cache.

By calling this method instead of e.g. BasicBlocks::as_mut you promise not to change the CFG. This means that

  1. The number of basic blocks remains unchanged
  2. The set of successors of each terminator remains unchanged.
  3. For each TerminatorKind::SwitchInt, the targets remains the same and the terminator kind is not changed.

If any of these conditions cannot be upheld, you should call BasicBlocks::invalidate_cfg_cache.

source

pub fn invalidate_cfg_cache(&mut self)

Invalidates cached information about the CFG.

You will only ever need this if you have also called BasicBlocks::as_mut_preserves_cfg. All other methods that allow you to mutate the basic blocks also call this method themselves, thereby avoiding any risk of accidentally cache invalidation.

Methods from Deref<Target = IndexSlice<BasicBlock, BasicBlockData<'tcx>>>§

source

pub fn len(&self) -> usize

source

pub fn is_empty(&self) -> bool

source

pub fn next_index(&self) -> I

Gives the next index that will be assigned when push is called.

Manual bounds checks can be done using idx < slice.next_index() (as opposed to idx.index() < slice.len()).

source

pub fn iter(&self) -> Iter<'_, T>

source

pub fn iter_enumerated(&self) -> impl DoubleEndedIterator + ExactSizeIterator

source

pub fn indices( &self, ) -> impl DoubleEndedIterator + ExactSizeIterator + Clone + 'static

source

pub fn last_index(&self) -> Option<I>

source

pub fn get(&self, index: I) -> Option<&T>

source

pub fn invert_bijective_mapping(&self) -> IndexVec<J, I>

Invert a bijective mapping, i.e. invert(map)[y] = x if map[x] = y, assuming the values in self are a permutation of 0..self.len().

This is used to go between memory_index (source field order to memory order) and inverse_memory_index (memory order to source field order). See also FieldsShape::Arbitrary::memory_index for more details.

Trait Implementations§

source§

impl<'tcx> Clone for BasicBlocks<'tcx>

source§

fn clone(&self) -> BasicBlocks<'tcx>

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl<'tcx> Debug for BasicBlocks<'tcx>

source§

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

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

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for BasicBlocks<'tcx>

source§

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

source§

impl<'tcx> Deref for BasicBlocks<'tcx>

§

type Target = IndexSlice<BasicBlock, BasicBlockData<'tcx>>

The resulting type after dereferencing.
source§

fn deref(&self) -> &IndexSlice<BasicBlock, BasicBlockData<'tcx>>

Dereferences the value.
source§

impl<'tcx> DirectedGraph for BasicBlocks<'tcx>

source§

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for BasicBlocks<'tcx>

source§

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

source§

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for BasicBlocks<'tcx>

source§

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher, )

source§

impl<'tcx> Predecessors for BasicBlocks<'tcx>

source§

fn predecessors(&self, node: Self::Node) -> impl Iterator<Item = Self::Node>

source§

impl<'tcx> StartNode for BasicBlocks<'tcx>

source§

fn start_node(&self) -> Self::Node

source§

impl<'tcx> Successors for BasicBlocks<'tcx>

source§

fn successors(&self, node: Self::Node) -> impl Iterator<Item = Self::Node>

source§

impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for BasicBlocks<'tcx>

source§

fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, __folder: &mut __F, ) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f). Read more
source§

fn fold_with<F>(self, folder: &mut F) -> Self
where F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.
source§

impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for BasicBlocks<'tcx>

source§

fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V, ) -> __V::Result

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v). Read more

Auto Trait Implementations§

§

impl<'tcx> DynSend for BasicBlocks<'tcx>

§

impl<'tcx> DynSync for BasicBlocks<'tcx>

§

impl<'tcx> !Freeze for BasicBlocks<'tcx>

§

impl<'tcx> !RefUnwindSafe for BasicBlocks<'tcx>

§

impl<'tcx> Send for BasicBlocks<'tcx>

§

impl<'tcx> Sync for BasicBlocks<'tcx>

§

impl<'tcx> Unpin for BasicBlocks<'tcx>

§

impl<'tcx> !UnwindSafe for BasicBlocks<'tcx>

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§

default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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<_>>()).

§

type Output = R

source§

impl<Tcx, T> DepNodeParams<Tcx> for T
where Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

source§

default fn fingerprint_style() -> FingerprintStyle

source§

default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous).
source§

default fn to_debug_str(&self, _: Tcx) -> String

source§

default fn recover(_: Tcx, _: &DepNode) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes 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> Filterable for T

source§

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

Creates a filterable data provider with the given name for debugging. Read more
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<P> IntoQueryParam<P> for P

source§

impl<'tcx, T> IsSuggestable<'tcx> for T
where T: TypeVisitable<TyCtxt<'tcx>> + TypeFoldable<TyCtxt<'tcx>>,

source§

fn is_suggestable(self, tcx: TyCtxt<'tcx>, infer_suggestable: bool) -> bool

Whether this makes sense to suggest in a diagnostic. Read more
source§

fn make_suggestable( self, tcx: TyCtxt<'tcx>, infer_suggestable: bool, placeholder: Option<Ty<'tcx>>, ) -> Option<T>

source§

impl<T> MaybeResult<T> for T

§

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.
§

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

§

type Output = T

Should always be Self
source§

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

§

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>,

§

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>,

§

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> TypeVisitableExt<I> for T
where I: Interner, T: TypeVisitable<I>,

source§

fn has_type_flags(&self, flags: TypeFlags) -> bool

source§

fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

Returns true if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free.
source§

fn error_reported(&self) -> Result<(), <I as Interner>::ErrorGuaranteed>

source§

fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool

Returns true if this type has any regions that escape binder (and hence are not bound by it).
source§

fn has_escaping_bound_vars(&self) -> bool

Return true if this type has regions that are not a part of the type. For example, for<'a> fn(&'a i32) return false, while fn(&'a i32) would return true. The latter can occur when traversing through the former. Read more
source§

fn has_aliases(&self) -> bool

source§

fn has_inherent_projections(&self) -> bool

source§

fn has_opaque_types(&self) -> bool

source§

fn has_coroutines(&self) -> bool

source§

fn references_error(&self) -> bool

source§

fn has_non_region_param(&self) -> bool

source§

fn has_infer_regions(&self) -> bool

source§

fn has_infer_types(&self) -> bool

source§

fn has_non_region_infer(&self) -> bool

source§

fn has_infer(&self) -> bool

source§

fn has_placeholders(&self) -> bool

source§

fn has_non_region_placeholders(&self) -> bool

source§

fn has_param(&self) -> bool

source§

fn has_free_regions(&self) -> bool

“Free” regions in this context means that it has any region that is not (a) erased or (b) late-bound.
source§

fn has_erased_regions(&self) -> bool

source§

fn has_erasable_regions(&self) -> bool

True if there are any un-erased free regions.
source§

fn is_global(&self) -> bool

Indicates whether this value references only ‘global’ generic parameters that are the same regardless of what fn we are in. This is used for caching.
source§

fn has_bound_regions(&self) -> bool

True if there are any late-bound regions
source§

fn has_non_region_bound_vars(&self) -> bool

True if there are any late-bound non-region variables
source§

fn has_bound_vars(&self) -> bool

True if there are any bound variables
source§

fn still_further_specializable(&self) -> bool

Indicates whether this value still has parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization.
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<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

source§

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

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
source§

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

source§

impl<T> ControlFlowGraph for T

source§

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

source§

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

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: 216 bytes