Struct rustc_codegen_ssa::mir::operand::OperandRef

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pub struct OperandRef<'tcx, V> {
    pub val: OperandValue<V>,
    pub layout: TyAndLayout<'tcx>,
}
Expand description

An OperandRef is an “SSA” reference to a Rust value, along with its type.

NOTE: unless you know a value’s type exactly, you should not generate LLVM opcodes acting on it and instead act via methods, to avoid nasty edge cases. In particular, using Builder::store directly is sure to cause problems – use OperandRef::store instead.

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§val: OperandValue<V>

The value.

§layout: TyAndLayout<'tcx>

The layout of value, based on its Rust type.

Implementations§

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impl<'a, 'tcx, V: CodegenObject> OperandRef<'tcx, V>

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pub fn zero_sized(layout: TyAndLayout<'tcx>) -> OperandRef<'tcx, V>

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pub fn from_const<Bx: BuilderMethods<'a, 'tcx, Value = V>>( bx: &mut Bx, val: ConstValue<'tcx>, ty: Ty<'tcx>, ) -> Self

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fn from_const_alloc<Bx: BuilderMethods<'a, 'tcx, Value = V>>( bx: &mut Bx, layout: TyAndLayout<'tcx>, alloc: ConstAllocation<'tcx>, offset: Size, ) -> Self

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pub fn immediate(self) -> V

Asserts that this operand refers to a scalar and returns a reference to its value.

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pub fn deref<Cx: LayoutTypeMethods<'tcx>>(self, cx: &Cx) -> PlaceRef<'tcx, V>

Asserts that this operand is a pointer (or reference) and returns the place to which it points. (This requires no code to be emitted as we represent places using the pointer to the place.)

This uses Ty::builtin_deref to include the type of the place and assumes the place is aligned to the pointee’s usual ABI alignment.

If you don’t need the type, see OperandValue::pointer_parts or OperandValue::deref.

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pub fn immediate_or_packed_pair<Bx: BuilderMethods<'a, 'tcx, Value = V>>( self, bx: &mut Bx, ) -> V

If this operand is a Pair, we return an aggregate with the two values. For other cases, see immediate.

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pub fn from_immediate_or_packed_pair<Bx: BuilderMethods<'a, 'tcx, Value = V>>( bx: &mut Bx, llval: V, layout: TyAndLayout<'tcx>, ) -> Self

If the type is a pair, we return a Pair, otherwise, an Immediate.

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pub fn extract_field<Bx: BuilderMethods<'a, 'tcx, Value = V>>( &self, bx: &mut Bx, i: usize, ) -> Self

Trait Implementations§

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impl<'tcx, V: Clone> Clone for OperandRef<'tcx, V>

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fn clone(&self) -> OperandRef<'tcx, V>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<V: CodegenObject> Debug for OperandRef<'_, V>

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

Formats the value using the given formatter. Read more
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impl<'tcx, V: Copy> Copy for OperandRef<'tcx, V>

Auto Trait Implementations§

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impl<'tcx, V> Freeze for OperandRef<'tcx, V>
where V: Freeze,

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impl<'tcx, V> !RefUnwindSafe for OperandRef<'tcx, V>

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impl<'tcx, V> Send for OperandRef<'tcx, V>
where V: Send,

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impl<'tcx, V> Sync for OperandRef<'tcx, V>
where V: Sync,

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impl<'tcx, V> Unpin for OperandRef<'tcx, V>
where V: Unpin,

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impl<'tcx, V> !UnwindSafe for OperandRef<'tcx, V>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'a mut [T]

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'a mut [T]

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<T> Filterable for T

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fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T

Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.