core::arch::x86_64

# Function _mm_stream_si64

1.27.0 · Source

    pub unsafe fn _mm_stream_si64(mem_addr: *mut i64, a: i64)

Available on x86-64 and target feature `sse2` only.
Expand description

Stores a 64-bit integer value in the specified memory location. To minimize caching, the data is flagged as non-temporal (unlikely to be used again soon).

Intel’s documentation

## §Safety of non-temporal stores

After using this intrinsic, but before any other access to the memory that this intrinsic mutates, a call to `_mm_sfence` must be performed by the thread that used the intrinsic. In particular, functions that call this intrinsic should generally call `_mm_sfence` before they return.

See `_mm_sfence` for details.