Struct PhiNode

pub struct PhiNode { /* private fields */ }

Represents a Phi node in SSA form.

Phi nodes are used to merge values coming from different control-flow paths. Initially, the phi node has no arguments (i.e. no predecessor regions), but you can add them later using the [add_region] method.

Implementations

impl PhiNode

pub fn new(idx: usize) -> Self

Creates a new unresolved PhiNode

Returns

A new phi node with no predecessor regions.

pub fn idx(&self) -> usize

Returns the index of the phi node.

pub fn add_region(&mut self, region: RegionId, edge_type: ControlFlowEdgeType)

Adds a predecessor RegionId to this phi node.

This method allows the phi node to record a region (i.e. a basic block ID) from which a value is coming.

Arguments

• region - The identifier of the predecessor region.

pub fn add_regions(&mut self, regions: Vec<(RegionId, ControlFlowEdgeType)>)

Adds predecessor RegionIds to this phi node.

This method allows the phi node to record multiple regions (i.e. basic block IDs) from which values are coming.

Arguments

• regions - The identifiers of the predecessor regions.

pub fn regions(&self) -> &[(RegionId, ControlFlowEdgeType)]

Returns a reference to the list of region IDs associated with this phi node.

Returns

A slice containing all the predecessor region IDs added so far.

Trait Implementations

impl Clone for PhiNode

fn clone(&self) -> PhiNode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PhiNode

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PhiNode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<PhiNode> for AstKind

fn from(id: PhiNode) -> Self

Converts to this type from the input type.

impl From<PhiNode> for ExprKind

fn from(id: PhiNode) -> Self

Converts to this type from the input type.

impl From<PhiNode> for P<AstKind>

fn from(id: PhiNode) -> Self

Converts to this type from the input type.

impl From<PhiNode> for P<ExprKind>

fn from(id: PhiNode) -> Self

Converts to this type from the input type.

impl Hash for PhiNode

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for PhiNode

fn eq(&self, other: &PhiNode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for PhiNode

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for PhiNode

impl StructuralPartialEq for PhiNode