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Do today chips still have die space for old instruction set? (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

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This is just a nitpicking question. Do Intel chips still have some space/transistors dedicated to SSE3? If they do, why can't they implement SSE3 by other, more powerful instrutions (like AVX) to save die space?

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[–] [email protected] 1 points 11 months ago (1 children)

You are confusing microcode and micro-ops.

[–] [email protected] 1 points 11 months ago (1 children)

what is microcode is, then?

[–] [email protected] 1 points 11 months ago

It's a way of creating a sequential control circuit based on a piece of memory holding the outputs and next state for each state.