svprfop in core::arch::aarch64 - Rust
Description: Addressing mode for prefetch intrinsics - allows the specification of the expected access kind (read or write), the cache level to load the data, the data retention policy (temporal or streaming)

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## svprfop

# Enum svprfop

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    #[non_exhaustive]#[repr(i32)]pub enum svprfop {
        SV_PLDL1KEEP = 0,
        SV_PLDL1STRM = 1,
        SV_PLDL2KEEP = 2,
        SV_PLDL2STRM = 3,
        SV_PLDL3KEEP = 4,
        SV_PLDL3STRM = 5,
        SV_PSTL1KEEP = 8,
        SV_PSTL1STRM = 9,
        SV_PSTL2KEEP = 10,
        SV_PSTL2STRM = 11,
        SV_PSTL3KEEP = 12,
        SV_PSTL3STRM = 13,
    }

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)
Available on AArch64 or ARM64EC only.
Expand description

Addressing mode for prefetch intrinsics - allows the specification of the expected access kind (read or write), the cache level to load the data, the data retention policy (temporal or streaming)

## Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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### SV_PLDL1KEEP = 0

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for reading to the L1 cache (i.e. allocate in cache normally)

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### SV_PLDL1STRM = 1

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Streaming fetch of the addressed location for reading to the L1 cache (i.e. memory only used once)

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### SV_PLDL2KEEP = 2

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for reading to the L2 cache (i.e. allocate in cache normally)

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### SV_PLDL2STRM = 3

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Streaming fetch of the addressed location for reading to the L2 cache (i.e. memory only used once)

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### SV_PLDL3KEEP = 4

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for reading to the L3 cache (i.e. allocate in cache normally)

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### SV_PLDL3STRM = 5

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Streaming fetch of the addressed location for reading to the L3 cache (i.e. memory only used once)

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### SV_PSTL1KEEP = 8

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for writing to the L1 cache (i.e. allocate in cache normally)

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### SV_PSTL1STRM = 9

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for writing to the L1 cache (i.e. memory only used once)

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### SV_PSTL2KEEP = 10

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for writing to the L2 cache (i.e. allocate in cache normally)

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### SV_PSTL2STRM = 11

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for writing to the L2 cache (i.e. memory only used once)

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### SV_PSTL3KEEP = 12

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for writing to the L3 cache (i.e. allocate in cache normally)

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### SV_PSTL3STRM = 13

🔬This is a nightly-only experimental API. (`stdarch_aarch64_sve` #145052)

Temporal fetch of the addressed location for writing to the L3 cache (i.e. memory only used once)

## Trait Implementations§

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### impl Clone for svprfop

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#### fn clone(&self) -> svprfop

Returns a duplicate of the value. Read more
1.0.0 · Source§

#### fn clone_from(&mut self, source: &Self)
where Self:,

Performs copy-assignment from `source`. Read more
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### impl Debug for svprfop

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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 PartialEq for svprfop

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#### fn eq(&self, other: &svprfop) -> bool

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

Tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl ConstParamTy_ for svprfop

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### impl Copy for svprfop

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### impl Eq for svprfop

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### impl StructuralPartialEq for svprfop

## Auto Trait Implementations§

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### impl Freeze for svprfop

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### impl RefUnwindSafe for svprfop

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### impl Send for svprfop

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### impl Sync for svprfop

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### impl Unpin for svprfop

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### impl UnsafeUnpin for svprfop

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### impl UnwindSafe for svprfop

## Blanket Implementations§

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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<T> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit` #126799)
Performs copy-assignment from `self` to `dest`. 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, 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, 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.