"New ISA Prefix Fusion"

By: Anon3 (anon3.delete@this.anon3.invalid), August 17, 2020 5:59 am
Room: Moderated Discussions
QAnon (qanon.delete@this.qanon.com) on August 16, 2020 11:21 pm wrote:
> though it apparently comes with a complex hardware cost. Looks like they took the RISC-V implementation
> suggestion of back to back instruction pair fusion and codified it in this new ISA version. Though in
> fairness they seem to have been doing this with existing instructions for a while.

They ran out of encoding space so had to add a prefix instruction. If you left the right shape hole in your ISA encoding to start off with then it can be possible to do this at nearly trivial hardware cost. If you didn't then it will blow up.
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  "New ISA Prefix Fusion"QAnon2020/08/16 10:21 PM
    "New ISA Prefix Fusion"Anon32020/08/17 05:59 AM
      "New ISA Prefix Fusion"Kevin G2020/08/17 09:51 AM
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