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> Back in 2000, AMD included cmov in its 64-bit x86 ISA extensions. Then, Intel had to adopt them when Itanium flopped.

Wasn't "cmov" one of the things added for the pentium pro? So it wasn't instruction compatible - hence the "i686" prefix to a lot of compiler triples?

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Intel was so embarrassed by the failure of itanium they invented a Time Machine and went back and added the instruction to a 1995 CPU. Deceptive and anti-competitive!

Intel failed to predict the timeline branch in which i686 arch had cmov so they had to roll back and replay it.

Also known as Speculative CPU manufacturing

Yes, that is correct.

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