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A comment on Why is Apple's M1 chip so fast?. Parent comment

Re:Why is Apple's M1 chip so fast? by compiler-guy on Monday November 30, 2020 @04:37PM (#25259334)
x86 instruction-length is not encoded in a single field. You have to examine it byte by byte to determine the total length.

There may be internal fields in the decoder that store this data, I suppose.

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Re:Why is Apple's M1 chip so fast? by colejohnson66 on Monday November 30, 2020 @05:47PM (#25260034)
Yes I am aware. My wording could’ve been better. I was referring to the (possible) internal fields in the decoder.
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