Struct rustc_target::abi::call::ArgAbi

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pub struct ArgAbi<'a, Ty> {
    pub layout: TyAndLayout<'a, Ty>,
    pub mode: PassMode,
}
Expand description

Information about how to pass an argument to, or return a value from, a function, under some ABI.

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§layout: TyAndLayout<'a, Ty>§mode: PassMode

Implementations§

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impl<'a, Ty> ArgAbi<'a, Ty>

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pub fn new( cx: &impl HasDataLayout, layout: TyAndLayout<'a, Ty>, scalar_attrs: impl Fn(&TyAndLayout<'a, Ty>, Scalar, Size) -> ArgAttributes, ) -> Self

This defines the “default ABI” for that type, that is then later adjusted in fn_abi_adjust_for_abi.

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fn indirect_pass_mode(layout: &TyAndLayout<'a, Ty>) -> PassMode

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pub fn make_direct_deprecated(&mut self)

Pass this argument directly instead. Should NOT be used! Only exists because of past ABI mistakes that will take time to fix (see https://github.com/rust-lang/rust/issues/115666).

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pub fn make_indirect(&mut self)

Pass this argument indirectly, by passing a (thin or fat) pointer to the argument instead. This is valid for both sized and unsized arguments.

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pub fn make_indirect_byval(&mut self, byval_align: Option<Align>)

Pass this argument indirectly, by placing it at a fixed stack offset. This corresponds to the byval LLVM argument attribute. This is only valid for sized arguments.

byval_align specifies the alignment of the byval stack slot, which does not need to correspond to the type’s alignment. This will be Some if the target’s ABI specifies that stack slots used for arguments passed by-value have specific alignment requirements which differ from the alignment used in other situations.

If None, the type’s alignment is used.

If the resulting alignment differs from the type’s alignment, the argument will be copied to an alloca with sufficient alignment, either in the caller (if the type’s alignment is lower than the byval alignment) or in the callee (if the type’s alignment is higher than the byval alignment), to ensure that Rust code never sees an underaligned pointer.

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pub fn extend_integer_width_to(&mut self, bits: u64)

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pub fn cast_to<T: Into<CastTarget>>(&mut self, target: T)

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pub fn cast_to_and_pad_i32<T: Into<CastTarget>>( &mut self, target: T, pad_i32: bool, )

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pub fn is_indirect(&self) -> bool

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pub fn is_sized_indirect(&self) -> bool

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pub fn is_unsized_indirect(&self) -> bool

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pub fn is_ignore(&self) -> bool

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pub fn eq_abi(&self, other: &Self) -> bool

Checks if these two ArgAbi are equal enough to be considered “the same for all function call ABIs”.

Trait Implementations§

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impl<'a, Ty: Clone> Clone for ArgAbi<'a, Ty>

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fn clone(&self) -> ArgAbi<'a, Ty>

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<'a, Ty: Display> Debug for ArgAbi<'a, Ty>

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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<'a, Ty: Hash> Hash for ArgAbi<'a, Ty>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<'a, Ty, __CTX> HashStable<__CTX> for ArgAbi<'a, Ty>
where __CTX: HashStableContext, Ty: HashStable<__CTX>,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl<'a, Ty: PartialEq> PartialEq for ArgAbi<'a, Ty>

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fn eq(&self, other: &ArgAbi<'a, Ty>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a, Ty: Eq> Eq for ArgAbi<'a, Ty>

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impl<'a, Ty> StructuralPartialEq for ArgAbi<'a, Ty>

Auto Trait Implementations§

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impl<'a, Ty> Freeze for ArgAbi<'a, Ty>
where Ty: Freeze,

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impl<'a, Ty> RefUnwindSafe for ArgAbi<'a, Ty>
where Ty: RefUnwindSafe,

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impl<'a, Ty> Send for ArgAbi<'a, Ty>
where Ty: Send,

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impl<'a, Ty> Sync for ArgAbi<'a, Ty>
where Ty: Sync,

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impl<'a, Ty> Unpin for ArgAbi<'a, Ty>
where Ty: Unpin,

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impl<'a, Ty> UnwindSafe for ArgAbi<'a, Ty>
where Ty: UnwindSafe,

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<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<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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<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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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