# 1.27.0[−][src]Function core::arch::x86_64::_mm_lfence

    pub unsafe fn _mm_lfence()

This is supported on x86-64 and target feature `sse2` only.

Performs a serializing operation on all load-from-memory instructions that were issued prior to this instruction.

Guarantees that every load instruction that precedes, in program order, is globally visible before any load instruction which follows the fence in program order.

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