std::intrinsics::prefetch_write_instruction - Rust
Description: API documentation for the Rust `prefetch_write_instruction` fn in crate `std`.
Keywords: rust, rustlang, rust-lang, prefetch_write_instruction

# Function std::intrinsics::prefetch_write_instruction [−] [src]

    pub unsafe extern "rust-intrinsic" fn prefetch_write_instruction<T>(
        data: *const T,
        locality: i32
    )

🔬 This is a nightly-only experimental API. (`core_intrinsics`)

intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

The `prefetch` intrinsic is a hint to the code generator to insert a prefetch instruction if supported; otherwise, it is a noop. Prefetches have no effect on the behavior of the program but can change its performance characteristics.

The `locality` argument must be a constant integer and is a temporal locality specifier ranging from (0) - no locality, to (3) - extremely local keep in cache

# Help

## Keyboard Shortcuts

?
  Show this help dialog
S
  Focus the search field
↑
  Move up in search results
↓
  Move down in search results
↹
  Switch tab
⏎
  Go to active search result
+ / -
  Collapse/expand all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)