Struct CfgInfo

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pub struct CfgInfo { /* private fields */ }

Expand description

Control-flow facts for one MIR function.

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impl CfgInfo

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pub fn new(func: &Function) -> Self

Computes shared CFG facts for func.

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pub fn successors(&self, block: BlockId) -> &[BlockId]

Returns successor blocks for block.

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pub fn reachable(&self) -> &FxHashSet<BlockId>

Returns the blocks reachable from the entry.

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pub fn is_reachable(&self, block: BlockId) -> bool

Returns true if block is reachable from the entry.

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pub fn rpo(&self) -> &[BlockId]

Returns reachable blocks in reverse postorder.

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pub fn dominators(&self) -> &DominatorTree

Returns immediate-dominator information.

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pub fn transitive_reachability( &mut self, ) -> &FxHashMap<BlockId, FxHashSet<BlockId>>

Returns block-to-block reachability through at least one CFG edge.

The map is computed lazily because only memory/state-aware passes need this more expensive transitive query.

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impl Clone for CfgInfo

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fn clone(&self) -> CfgInfo

Returns a duplicate of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for CfgInfo

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for CfgInfo

Blanket Implementations§

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

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

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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

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

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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<_>>()).

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type Output = R

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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

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

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fn in_current_span(self) -> Instrumented<Self>

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

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

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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> IntoEither for T

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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

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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

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