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wcrichton's profile
Will Crichton
Will Crichton
Will Crichton
@wcrichton

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Will Crichton

@wcrichton

Articulating the ineffable. Programming language theory 🤝 cognitive psychology. PhD @Stanford

he/him
willcrichton.net
Joined September 2011

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    1. Joe Cutler‏ @alpha_convert Aug 2

      Compiler theory question: if I've computed a dominator table for a graph, can I easily compute the dominator table for the dual graph?

      2 replies 0 retweets 2 likes
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    2. Joe Cutler‏ @alpha_convert Aug 2

      After 10 minutes of thinking about it the answer seems to be “no”, but it’d probably save me a lot of boilerplate writing if the answer was “yes”

      1 reply 0 retweets 0 likes
      Show this thread
    3. Will Crichton‏ @wcrichton Aug 2
      Replying to @alpha_convert

      Just reverse all the edges of your CFG!

      1 reply 0 retweets 0 likes
    4. Joe Cutler‏ @alpha_convert Aug 2
      Replying to @wcrichton

      Oh, I think I’m using improper terminology here... not dual as in “reverse the arrows”, but dual as in “edges become nodes”

      1 reply 0 retweets 0 likes
    5. Will Crichton‏ @wcrichton Aug 2
      Replying to @alpha_convert

      Oh I assumed you wanted the post dominator tree. Never thought about duals for a directed graph...

      1 reply 0 retweets 1 like
      Will Crichton‏ @wcrichton Aug 2
      Replying to @wcrichton @alpha_convert

      How do you even do that? Is a dual defined for all CFGs?

      9:05 AM - 2 Aug 2021
      1 reply 0 retweets 0 likes
        1. Joe Cutler‏ @alpha_convert Aug 2
          Replying to @wcrichton

          I’m not even all that sure. I’m probably attacking this problem wrong.

          0 replies 0 retweets 1 like
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