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RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

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Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

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    1. whitequark‏ @whitequark 30 Apr 2016
      Replying to @whitequark

      @bmastenbrook to the actual machine? does it correspond to {x86,mips} machines more so than mips does? are you sure?

      1 reply 0 retweets 0 likes
    2. whitequark‏ @whitequark 30 Apr 2016
      Replying to @whitequark

      @bmastenbrook to the extent that mainstreamish architectures are similar to each other, assembly for *any of them* is a portable assembly

      3 replies 1 retweet 0 likes
    3. Brian Mastenbrook‏ @bmastenbrook 30 Apr 2016
      Replying to @whitequark

      @whitequark I *think* people looking for a "portable assembly" want something with straightforward translation, but not to worry about ...

      1 reply 0 retweets 0 likes
    4. Brian Mastenbrook‏ @bmastenbrook 30 Apr 2016
      Replying to @bmastenbrook

      @whitequark ... things like branch delay slots that something else can automatically insert. but I could be wrong

      2 replies 0 retweets 0 likes
    5. whitequark‏ @whitequark 30 Apr 2016
      Replying to @bmastenbrook

      @bmastenbrook uhm. delay slot stuffing is like the basic job of a risc assembler

      2 replies 0 retweets 0 likes
    6. whitequark‏ @whitequark 30 Apr 2016
      Replying to @whitequark

      @bmastenbrook i'm going to go further and say that the fact our assemblers don't do regalloc or cc handling just means they suck

      2 replies 1 retweet 2 likes
    7. John Regehr‏ @johnregehr 30 Apr 2016
      Replying to @whitequark

      @whitequark @bmastenbrook LLVM or C--

      1 reply 0 retweets 0 likes
    8. whitequark‏ @whitequark 30 Apr 2016
      Replying to @johnregehr

      @johnregehr @bmastenbrook yes. LLVM is patterned for and after mainstreamish architectures, so it's just as valid here

      2 replies 0 retweets 0 likes
    9. whitequark‏ @whitequark 30 Apr 2016
      Replying to @whitequark

      @johnregehr @bmastenbrook ... well, somewhat less valid, because LLVM IR has UB in its semantics. maybe if you don't use opt

      2 replies 0 retweets 1 like
    10. zack HOWL berg‏ @elwoz 30 Apr 2016
      Replying to @whitequark

      @whitequark @johnregehr @bmastenbrook note: a lot of what people still need *actual* assembly for is clever use of SIMD instructions

      2 replies 0 retweets 0 likes
      Rich Felker‏ @RichFelker 30 Apr 2016
      Replying to @elwoz

      @elwoz @whitequark @johnregehr @bmastenbrook The only thing ppl _actually_ need asm for is stuff _not representable_ in C.

      2:11 PM - 30 Apr 2016
      3 replies 0 retweets 0 likes
        1. New conversation
        2. whitequark‏ @whitequark 30 Apr 2016
          Replying to @RichFelker

          @RichFelker I take issue to the statement that we don't need alternatives to C

          1 reply 0 retweets 0 likes
        3. Rich Felker‏ @RichFelker 30 Apr 2016
          Replying to @whitequark

          @whitequark Replace "C" by your favorite HLL. Same principle applies.

          1 reply 0 retweets 0 likes
        4. whitequark‏ @whitequark 30 Apr 2016
          Replying to @RichFelker

          @RichFelker I agree then; but also the discussion is centered around a hypothetical HLL that we call "portable assembly"

          2 replies 0 retweets 1 like
        5. Rich Felker‏ @RichFelker 30 Apr 2016
          Replying to @whitequark

          @whitequark To me, part of the definition of "portable assembly" is that it _not_ be a HLL.

          1 reply 0 retweets 0 likes
        6. whitequark‏ @whitequark 30 Apr 2016
          Replying to @RichFelker

          @RichFelker portability requires abstraction, which is inevitably a high-level feature. the question is to what level

          1 reply 0 retweets 0 likes
        7. Rich Felker‏ @RichFelker 30 Apr 2016
          Replying to @whitequark

          @whitequark I consider a language HL if it lacks direct correspondence between source statements & output machine insns ("as if rule").

          2 replies 0 retweets 0 likes
        8. whitequark‏ @whitequark 30 Apr 2016
          Replying to @RichFelker

          @RichFelker I think this definition isn't rigorous enough to be useful. Scheme defined to be template-compiled is not HLL;

          1 reply 0 retweets 0 likes
        9. whitequark‏ @whitequark 30 Apr 2016
          Replying to @whitequark

          @RichFelker regular assembly with extensive use of pseudoinstructions is HLL?

          1 reply 0 retweets 0 likes
        10. 6 more replies
        1. Rich Felker‏ @RichFelker 30 Apr 2016
          Replying to @RichFelker

          @elwoz @whitequark @johnregehr @bmastenbrook i.e. things like task/context switch, thread creation, sj/lj impl, code that runs w/o stack,...

          0 replies 0 retweets 0 likes
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        1. zack HOWL berg‏ @elwoz 30 Apr 2016
          Replying to @RichFelker

          @RichFelker @whitequark @johnregehr @bmastenbrook Tomayto, tomahto.

          0 replies 0 retweets 0 likes
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