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Emitting metadata early makes building/checking Rust up to twice as fast

136 points · 32 comments · knuckleheads

  1. WalterGR · · focus · HN ↗
    There’s an interesting comment thread (including potential downsides) about this technique in the submission for “How to speed up the Rust compiler in September 2026” from a couple days ago: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=49923594">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=49923594
    1. aw1621107 · · focus · HN ↗
      The commenter there is the OP, for what it&#x27;s worth
    2. kibwen · · focus · HN ↗
      Additional information about potential downsides and prior art (including links to the previous time that this was attempted, in a slightly different form): <a href="https:&#x2F;&#x2F;github.com&#x2F;PowderworksCode&#x2F;headstart&#x2F;blob&#x2F;main&#x2F;docs&#x2F;design.md#risks" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;PowderworksCode&#x2F;headstart&#x2F;blob&#x2F;main&#x2F;docs&#x2F;...
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