Enum rustc_middle::mir::Rvalue [−][src]
Rvalues
Variants
Use(Operand<'tcx>)
x (either a move or copy, depending on type of x)
[x; 32]
Ref(Region<'tcx>, BorrowKind, Place<'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(Mutability, Place<'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
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>
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pub fn ty<D>(&self, local_decls: &D, tcx: TyCtxt<'tcx>) -> Ty<'tcx> where
D: HasLocalDecls<'tcx>,
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D: HasLocalDecls<'tcx>,
pub fn initialization_state(&self) -> RvalueInitializationState
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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>
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impl<'tcx> Debug for Rvalue<'tcx>
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impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for Rvalue<'tcx>
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impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for Rvalue<'tcx>
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impl<'tcx> Hash for Rvalue<'tcx>
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fn hash<__H: Hasher>(&self, state: &mut __H)
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pub fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for Rvalue<'tcx>
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fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
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&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
impl<'tcx> PartialEq<Rvalue<'tcx>> for Rvalue<'tcx>
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impl<'tcx> StructuralPartialEq for Rvalue<'tcx>
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impl<'tcx> TypeFoldable<'tcx> for Rvalue<'tcx>
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fn super_fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self
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fn super_visit_with<V: TypeVisitor<'tcx>>(
&self,
visitor: &mut V
) -> ControlFlow<V::BreakTy>
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&self,
visitor: &mut V
) -> ControlFlow<V::BreakTy>
fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self
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fn visit_with<V: TypeVisitor<'tcx>>(
&self,
visitor: &mut V
) -> ControlFlow<V::BreakTy>
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&self,
visitor: &mut V
) -> ControlFlow<V::BreakTy>
fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
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fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
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fn has_escaping_bound_vars(&self) -> bool
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fn has_type_flags(&self, flags: TypeFlags) -> bool
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fn has_projections(&self) -> bool
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fn has_opaque_types(&self) -> bool
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fn references_error(&self) -> bool
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fn has_param_types_or_consts(&self) -> bool
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fn has_infer_regions(&self) -> bool
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fn has_infer_types(&self) -> bool
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fn has_infer_types_or_consts(&self) -> bool
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fn needs_infer(&self) -> bool
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fn has_placeholders(&self) -> bool
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fn needs_subst(&self) -> bool
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fn has_free_regions(&self) -> bool
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fn has_erased_regions(&self) -> bool
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fn has_erasable_regions(&self) -> bool
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fn is_global(&self) -> bool
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fn has_late_bound_regions(&self) -> bool
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fn still_further_specializable(&self) -> bool
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Auto Trait Implementations
impl<'tcx> !RefUnwindSafe for Rvalue<'tcx>
impl<'tcx> !Send for Rvalue<'tcx>
impl<'tcx> !Sync for Rvalue<'tcx>
impl<'tcx> Unpin for Rvalue<'tcx>
impl<'tcx> !UnwindSafe for Rvalue<'tcx>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<'a, T> Captures<'a> for T where
T: ?Sized,
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T: ?Sized,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> MaybeResult<T> for T
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type Error = !
pub fn from(Result<T, <T as MaybeResult<T>>::Error>) -> T
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pub fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>
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impl<'tcx, T> Subst<'tcx> for T where
T: TypeFoldable<'tcx>,
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T: TypeFoldable<'tcx>,
pub fn subst_spanned(Self, TyCtxt<'tcx>, &[GenericArg<'tcx>], Option<Span>) -> T
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fn subst(self, tcx: TyCtxt<'tcx>, substs: &[GenericArg<'tcx>]) -> Self
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.