Function std::intrinsics::prefetch_write_data

pub unsafe extern "rust-intrinsic" fn prefetch_write_data<T>(    data: *const T,     locality: i32)
🔬 This is a nightly-only experimental API. (core_intrinsics #0)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 no-op. 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

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