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

pub enum Rvalue<'tcx> {
Show 13 variants Use(Operand<'tcx>), Repeat(Operand<'tcx>, &'tcx Const<'tcx>), Ref(Region<'tcx>, BorrowKind, Place<'tcx>), ThreadLocalRef(DefId), AddressOf(Mutability, Place<'tcx>), Len(Place<'tcx>), Cast(CastKind, Operand<'tcx>, Ty<'tcx>), BinaryOp(BinOp, Box<(Operand<'tcx>, Operand<'tcx>)>), CheckedBinaryOp(BinOp, Box<(Operand<'tcx>, Operand<'tcx>)>), NullaryOp(NullOp, Ty<'tcx>), UnaryOp(UnOp, Operand<'tcx>), Discriminant(Place<'tcx>), Aggregate(Box<AggregateKind<'tcx>>, Vec<Operand<'tcx>>),
Expand description




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

Tuple Fields of Use

0: Operand<'tcx>

[x; 32]

Tuple Fields of Repeat

0: Operand<'tcx>1: &'tcx Const<'tcx>

&x or &mut x

Tuple Fields of Ref

0: Region<'tcx>1: BorrowKind2: Place<'tcx>

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.

Tuple Fields of ThreadLocalRef

0: DefId

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.

Tuple Fields of AddressOf

0: Mutability1: Place<'tcx>

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

Tuple Fields of Len

0: Place<'tcx>

Tuple Fields of Cast

0: CastKind1: Operand<'tcx>2: Ty<'tcx>

Tuple Fields of BinaryOp

0: BinOp1: Box<(Operand<'tcx>, Operand<'tcx>)>

Tuple Fields of CheckedBinaryOp

0: BinOp1: Box<(Operand<'tcx>, Operand<'tcx>)>

Tuple Fields of NullaryOp

0: NullOp1: Ty<'tcx>

Tuple Fields of UnaryOp

0: UnOp1: Operand<'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.

Tuple Fields of Discriminant

0: Place<'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.

Tuple Fields of Aggregate

0: Box<AggregateKind<'tcx>>1: Vec<Operand<'tcx>>


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

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

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

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

This method tests for !=.

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. Read more

Returns true if this self has any regions that escape binder (and hence are not bound by it). Read more

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

True if there are any un-erased free regions.

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. Read more

True if there are any late-bound regions

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. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.


Note: Most layout information is completely unstable and may be different between compiler versions and platforms. 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: 40 bytes