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GHC plugin for lifting debug printing out-of-line #93

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opened 2026年05月14日 15:07:26 +02:00 by amyliao · 1 comment

@totbwf writes:

<totbwf> https://www.irccloud.com/pastebin/KM8UP4kS/
<ames> oh jeez
<totbwf> If there's a core plugin we should write, it should lift out tracing lol

It should be pretty straightforward to write a core plugin to unconditionally float out saturated applications of alwaysTraceSDoc into non-inlinable top-level bindings.

@totbwf writes: > \<totbwf\> https://www.irccloud.com/pastebin/KM8UP4kS/ > \<ames\> oh jeez > \<totbwf\> If there's a core plugin we should write, it should lift out tracing lol It should be pretty straightforward to write a [core plugin](https://downloads.haskell.org/~ghc/9.12.1.20250219/docs/users_guide/extending_ghc.html#core-plugins-in-more-detail) to unconditionally float out saturated applications of `alwaysTraceSDoc` into non-inlinable top-level bindings.

For bonus points, it would be great if we could add a -dsuppress-trace-doc that elides the body of the floated bindings from core dumps. Currently my strategy is to just build with debugging disabled when I want to look at core but this is annoying and potentially misleading!

For bonus points, it would be great if we could add a `-dsuppress-trace-doc` that elides the body of the floated bindings from core dumps. Currently my strategy is to just build with debugging disabled when I want to look at core but this is annoying and potentially misleading!
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