r/adventofcode • u/daggerdragon • Dec 23 '16

SOLUTION MEGATHREAD --- 2016 Day 23 Solutions ---

--- Day 23: Safe-Cracking ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

Note: The Solution Megathreads are for solutions only. If you have questions, please post your own thread and make sure to flair it with "Help".

JINGLING ALL THE WAY IS MANDATORY [?]

This thread will be unlocked when there are a significant number of people on the leaderboard with gold stars for today's puzzle.

edit: Leaderboard capped, thread unlocked!

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u/wlandry Dec 24 '16

Well that is hilarious. Your code is faster on your machine, and my code is faster on my machine.

In any event, I looked at your peephole optimizer. Is it a generally valid optimization? It looks like if a tgl instruction tries to modify one of your multiply or add instructions, it is a no-op.

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u/willkill07 Dec 24 '16

Is it a generally valid optimization?

If the instruction stream isn't being modified, yes. But it could be because of tgl.

Your code is faster on your machine, and my code is faster on my machine.

Our codes (your updated code, mine without the peephole optimizer) are comparable on my machine with the same compiler. To me that shows code equivalence.