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What is the difference between the MMX instruction PANDN and the BMI 1.0 instruction ANDN ?

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    `ANDN` operates on general purpose registers, `PANDN` operates on vector registers. – Jester Jun 21 '16 at 17:06
  • The insn set reference should make it obvious. See http://www.felixcloutier.com/x86/, or links to the original PDFs in the [x86 tag wiki](http://stackoverflow.com/tags/x86/info). – Peter Cordes Jun 21 '16 at 17:36

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