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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. whitequark‏ @whitequark Mar 25
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      hot take: if C++ was truly committed to zero cost abstractions, functions would have opt-in reentrancy, the same way classes have opt-in vtables

      18 replies 17 retweets 194 likes
      Show this thread
      Patrick Walton‏ @pcwalton Mar 25
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      Replying to @whitequark

      Opt-in register allocation too. C had the register keyword at one point :) Mike Pall famously said that LuaJIT had to be assembler instead of C because of register allocation issues (though Daniel Berlin of GCC fame had a good rebuttal—I’m not sure who’s right.)

      9:35 PM - 25 Mar 2020
      • 3 Retweets
      • 30 Likes
      • Alex T. Jensen Remy Goldschmidt amadeusine Souvik Sen Κerem Καt Austin Henley clacke@libranet.de ❌ Mark to Markov Chain You and 52 others
      3 replies 3 retweets 30 likes
        1. New conversation
        2. Joe Groff‏ @jckarter Mar 26
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          Replying to @pcwalton @whitequark

          I'm waiting for the compiler-as-proof-assistant that lets you write the high-level code and its machine code refinement manually, using optimizer passes as automated proof strategies and validating your machine code after manual changes

          1 reply 1 retweet 14 likes
        3. Marisa "Long Middle Name Looks Cool" Kirisame‏ @MarisaVeryMoe Mar 26
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          Replying to @jckarter @pcwalton @whitequark

          cant you already do this in coq - define a DSL, define a set of rewrite rule/tactics. You can then define new term as mere tactic transformation of old term.

          2 replies 0 retweets 1 like
        4. 3 more replies
        1. New conversation
        2. sinan‏ @_osa1 Mar 25
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          Replying to @pcwalton @whitequark

          Could you share the sources of Mike's and Daniel's posts/emails on this please?

          1 reply 0 retweets 5 likes
        3. swym‏ @0xfd000000 Mar 26
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          Replying to @_osa1 @pcwalton @whitequark

          /sub

          0 replies 0 retweets 0 likes
        4. End of conversation
        1. Slavfox‏ @Slavfoxman Mar 26
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          Replying to @pcwalton @whitequark

          TIL: register is gone since C++17

          0 replies 0 retweets 2 likes
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