[][src]Enum rustc_middle::mir::Rvalue

pub enum Rvalue<'tcx> {
    Use(Operand<'tcx>),
    Repeat(Operand<'tcx>, &'tcx Const<'tcx>),
    Ref(Region<'tcx>, BorrowKindPlace<'tcx>),
    ThreadLocalRef(DefId),
    AddressOf(MutabilityPlace<'tcx>),
    Len(Place<'tcx>),
    Cast(CastKindOperand<'tcx>, Ty<'tcx>),
    BinaryOp(BinOpOperand<'tcx>, Operand<'tcx>),
    CheckedBinaryOp(BinOpOperand<'tcx>, Operand<'tcx>),
    NullaryOp(NullOpTy<'tcx>),
    UnaryOp(UnOpOperand<'tcx>),
    Discriminant(Place<'tcx>),
    Aggregate(Box<AggregateKind<'tcx>>, Vec<Operand<'tcx>>),
}

Rvalues

Variants

Use(Operand<'tcx>)

x (either a move or copy, depending on type of x)

Repeat(Operand<'tcx>, &'tcx Const<'tcx>)

[x; 32]

Ref(Region<'tcx>, BorrowKindPlace<'tcx>)

&x or &mut x

ThreadLocalRef(DefId)

Accessing a thread local static. This is inherently a runtime operation, even if llvm treats it as an access to a static. This Rvalue yields a reference to the thread local static.

AddressOf(MutabilityPlace<'tcx>)

Create a raw pointer to the given place Can be generated by raw address of expressions (&raw const x), or when casting a reference to a raw pointer.

Len(Place<'tcx>)

length of a [X] or [X;n] value

Cast(CastKindOperand<'tcx>, Ty<'tcx>)
BinaryOp(BinOpOperand<'tcx>, Operand<'tcx>)
CheckedBinaryOp(BinOpOperand<'tcx>, Operand<'tcx>)
NullaryOp(NullOpTy<'tcx>)
UnaryOp(UnOpOperand<'tcx>)
Discriminant(Place<'tcx>)

Read the discriminant of an ADT.

Undefined (i.e., no effort is made to make it defined, but there’s no reason why it cannot be defined to return, say, a 0) if ADT is not an enum.

Aggregate(Box<AggregateKind<'tcx>>, Vec<Operand<'tcx>>)

Creates an aggregate value, like a tuple or struct. This is only needed because we want to distinguish dest = Foo { x: ..., y: ... } from dest.x = ...; dest.y = ...; in the case that Foo has a destructor. These rvalues can be optimized away after type-checking and before lowering.

Implementations

impl<'tcx> Rvalue<'tcx>[src]

pub fn ty<D>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> Ty<'tcx> where
    D: HasLocalDecls<'tcx>, 
[src]

pub fn initialization_state(&self) -> RvalueInitializationState[src]

Returns true if this rvalue is deeply initialized (most rvalues) or whether its only shallowly initialized (Rvalue::Box).

Trait Implementations

impl<'tcx> Clone for Rvalue<'tcx>[src]

impl<'tcx> Debug for Rvalue<'tcx>[src]

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for Rvalue<'tcx>[src]

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for Rvalue<'tcx>[src]

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for Rvalue<'tcx>[src]

impl<'tcx> PartialEq<Rvalue<'tcx>> for Rvalue<'tcx>[src]

impl<'tcx> StructuralPartialEq for Rvalue<'tcx>[src]

impl<'tcx> TypeFoldable<'tcx> for Rvalue<'tcx>[src]

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for Rvalue<'tcx>[src]

impl<'tcx> !Send for Rvalue<'tcx>[src]

impl<'tcx> !Sync for Rvalue<'tcx>[src]

impl<'tcx> Unpin for Rvalue<'tcx>[src]

impl<'tcx> !UnwindSafe for Rvalue<'tcx>[src]

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

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

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> MaybeResult<T> for T[src]

type Error = !

impl<'tcx, T> Subst<'tcx> for T where
    T: TypeFoldable<'tcx>, 
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

impl<T> WithConstness for T[src]