Struct rustc_middle::mir::BasicBlock[−][src]

pub struct BasicBlock {
    private: u32,
}

Expand description

A node in the MIR control-flow graph.

There are no branches (e.g., ifs, function calls, etc.) within a basic block, which makes it easier to do data-flow analyses and optimizations. Instead, branches are represented as an edge in a graph between basic blocks.

Basic blocks consist of a series of statements, ending with a terminator. Basic blocks can have multiple predecessors and successors, however there is a MIR pass (CriticalCallEdges) that removes critical edges, which are edges that go from a multi-successor node to a multi-predecessor node. This pass is needed because some analyses require that there are no critical edges in the CFG.

Note that this type is just an index into Body.basic_blocks; the actual data that a basic block holds is in BasicBlockData.

Read more about basic blocks in the rustc-dev-guide.

Fields

private: u32

Implementations

`impl BasicBlock`[src]

`pub const MAX_AS_U32: u32`[src]

`pub const MAX: Self`[src]

`pub const fn from_usize(value: usize) -> Self`[src]

`pub const fn from_u32(value: u32) -> Self`[src]

`pub const unsafe fn from_u32_unchecked(value: u32) -> Self`[src]

`pub const fn index(self) -> usize`[src]

Extracts the value of this index as an integer.

`pub const fn as_u32(self) -> u32`[src]

Extracts the value of this index as a u32.

`pub const fn as_usize(self) -> usize`[src]

Extracts the value of this index as a usize.

`impl BasicBlock`[src]

`pub fn start_location(self) -> Location`[src]

Trait Implementations

`impl Add<usize> for BasicBlock`[src]

`type Output = Self`

The resulting type after applying the + operator.

`fn add(self, other: usize) -> Self`[src]

Performs the + operation. Read more

`impl Clone for BasicBlock`[src]

`fn clone(&self) -> Self`[src]

Returns a copy of the value. Read more

`fn clone_from(&mut self, source: &Self)`1.0.0 [src]

Performs copy-assignment from source. Read more

`impl Debug for BasicBlock`[src]

`fn fmt(&self, fmt: &mut Formatter<'_>) -> Result`[src]

Formats the value using the given formatter. Read more

`impl<D: Decoder> Decodable<D> for BasicBlock`[src]

`fn decode(d: &mut D) -> Result<Self, D::Error>`[src]

`impl<E: Encoder> Encodable<E> for BasicBlock`[src]

`fn encode(&self, e: &mut E) -> Result<(), E::Error>`[src]

`impl From<u32> for BasicBlock`[src]

`fn from(value: u32) -> Self`[src]

Performs the conversion.

`impl From<usize> for BasicBlock`[src]

`fn from(value: usize) -> Self`[src]

Performs the conversion.

`impl Hash for BasicBlock`[src]

`fn hash<H: Hasher>(&self, state: &mut H)`[src]

Feeds this value into the given Hasher. Read more

`fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,` 1.3.0 [src]

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

`impl<'ctx> HashStable<StableHashingContext<'ctx>> for BasicBlock`[src]

`fn hash_stable( &self, hcx: &mut StableHashingContext<'ctx>, __hasher: &mut StableHasher )`[src]

`impl Idx for BasicBlock`[src]

`fn new(value: usize) -> Self`[src]

`fn index(self) -> usize`[src]

`fn increment_by(&mut self, amount: usize)`[src]

`fn plus(self, amount: usize) -> Self`[src]

`impl<'tcx> Index<BasicBlock> for Body<'tcx>`[src]

`type Output = BasicBlockData<'tcx>`

The returned type after indexing.

`fn index(&self, index: BasicBlock) -> &BasicBlockData<'tcx>`[src]

Performs the indexing (container[index]) operation. Read more

`impl<'tcx> IndexMut<BasicBlock> for Body<'tcx>`[src]

`fn index_mut(&mut self, index: BasicBlock) -> &mut BasicBlockData<'tcx>`[src]

Performs the mutable indexing (container[index]) operation. Read more

`impl Ord for BasicBlock`[src]

`fn cmp(&self, other: &BasicBlock) -> Ordering`[src]

This method returns an Ordering between self and other. Read more

`#[must_use] fn max(self, other: Self) -> Self`1.21.0 [src]

Compares and returns the maximum of two values. Read more

`#[must_use] fn min(self, other: Self) -> Self`1.21.0 [src]

Compares and returns the minimum of two values. Read more

`#[must_use] fn clamp(self, min: Self, max: Self) -> Self`1.50.0 [src]

Restrict a value to a certain interval. Read more

`impl PartialEq<BasicBlock> for BasicBlock`[src]

`fn eq(&self, other: &BasicBlock) -> bool`[src]

This method tests for self and other values to be equal, and is used by ==. Read more

`fn ne(&self, other: &BasicBlock) -> bool`[src]

This method tests for !=.

`impl PartialOrd<BasicBlock> for BasicBlock`[src]

`fn partial_cmp(&self, other: &BasicBlock) -> Option<Ordering>`[src]

This method returns an ordering between self and other values if one exists. Read more

`#[must_use] fn lt(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests less than (for self and other) and is used by the < operator. Read more

`#[must_use] fn le(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

`#[must_use] fn gt(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests greater than (for self and other) and is used by the > operator. Read more

`#[must_use] fn ge(&self, other: &Rhs) -> bool`1.0.0 [src]

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

`impl Step for BasicBlock`[src]

`fn steps_between(start: &Self, end: &Self) -> Option<usize>`[src]

🔬 This is a nightly-only experimental API. (step_trait)

recently redesigned

Returns the number of successor steps required to get from start to end. Read more