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| <code>CLFLUSHOPT</code> || Optimized CLFLUSH; Behaves similarly to <code>CLFLUSH</code> but without the serialization, thereby optimized for performance by allowing for some concurrency when executing multiple CLFLUSHOPT instructions back-to-back. | | <code>CLFLUSHOPT</code> || Optimized CLFLUSH; Behaves similarly to <code>CLFLUSH</code> but without the serialization, thereby optimized for performance by allowing for some concurrency when executing multiple CLFLUSHOPT instructions back-to-back. | ||
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| − | | <code>CLWB</code> || Cache line write back; behaves similarly to <code>CLFLUSHOPT</code> but keeps the cache line valid (i.e., the cache line is flushed and then marked as no longer dirty) thereby optimized for performance by keeping the line in the cache, increasing the | + | | <code>CLWB</code> || Cache line write back; behaves similarly to <code>CLFLUSHOPT</code> but keeps the cache line valid (i.e., the cache line is flushed and then marked as no longer dirty) thereby optimized for performance by keeping the line in the cache, increasing the cache of a [[cache hit]]. |
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Both of the new instructions must follow by a <code>SFENCE</code> to ensure all flushes are completed before continuing. | Both of the new instructions must follow by a <code>SFENCE</code> to ensure all flushes are completed before continuing. | ||
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== Microarchitecture support == | == Microarchitecture support == | ||
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== Intrinsic functions == | == Intrinsic functions == | ||
<source lang=asm> | <source lang=asm> | ||
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# clflushopt | # clflushopt | ||
void _mm_clflushopt (void const * p) | void _mm_clflushopt (void const * p) | ||
| − | + | # clflush | |
| − | # | + | void _mm_clflush (void const* p) |
| − | void | ||
</source> | </source> | ||
== See also == | == See also == | ||
* {{snia|NVM Programming Model}} | * {{snia|NVM Programming Model}} | ||
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