pub unsafe extern "rust-intrinsic" fn nontemporal_store<T>(
ptr: *mut T,
val: T,
)
🔬This is a nightly-only experimental API. (
core_intrinsics
)Expand description
Emits a nontemporal
store, which gives a hint to the CPU that the data should not be held
in cache. Except for performance, this is fully equivalent to ptr.write(val)
.
Not all architectures provide such an operation. For instance, x86 does not: while MOVNT
exists, that operation is not equivalent to ptr.write(val)
(MOVNT
writes can be reordered
in ways that are not allowed for regular writes).