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Questions - mmx

What instruction set does SFENCE belong to?

I've been doing a good amount of research on AMD64 (x86-64) instructions, and its been kind of confusing. A lot of the time official CPU documentation doesn't designate instruction as part of a specif...
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Badasahog

assembly

x86-64

sse

amd-processor

mmx

Votes: 0

Answers: 1

Latest Answer

EMMX is a subset of SSE, and sfence is part of both of them. AMD did not immediately support all SSE instructions, but at first took a subset of it that did not require the new XMM registers (see near...
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harold

What are the names and meanings of the intrinsic vector element types, like epi64x or pi32?

The intel intrinsic functions have the subtype of the vector built into their names. For example, _mm_set1_ps is a ps, which is a packed single-precision aka. a float. Although the meaning of most of ...
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Brotcrunsher

intel

sse

intrinsics

sse2

mmx

Votes: 0

Answers: 1

Latest Answer

The missing versions are at least si128 and si64, used in bitwise operations and [e]pu{8,16,32,64} for unsigned operations. epi and pi differ in e probably meaning extended; epi register target is a...
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Aki Suihkonen

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