Dear Developers, yesterday, there were three commits showing up at https://perf.haskell.org/ghc/:
https://perf.haskell.org/ghc/#revision/60297486fddd5c9695e2263c2ae46fa9 0f0feb9e 60297486fddd5c9695e2263c2ae46fa90f0feb9e Author: Ben Gamari <bgamari.f...@gmail.com> Drop custom mapM impl for [] nofib/allocs/cryptarithm2 + 64.55% nofib/allocs/k-nucleotide - 5.03% nofib/time/fannkuch-redux - 3.62% Did someone forget to run nofib here, or is this serious drop in performance in one case expected and something we condone? In that case, it should have been clearly noted in the commit message! https://perf.haskell.org/ghc/#revision/b12dba7829742de98a483645142c7962 b9dd9f3f b12dba7829742de98a483645142c7962b9dd9f3f Author: RyanGlScott <ryan.gl.sc...@gmail.com> Make Exception datatypes into newtypes nofib/time/cryptarithm1 + 7.22% If you look at the graph, this is quite reproducible: https://perf.haskell.org/ghc/#graph/nofib/time/cryptarithm1;hl=b12dba78 29742de98a483645142c7962b9dd9f3f but I have no idea how that change could have that effect. Maybe some weird cache effect due to binary sizes or different code layout? It would be great to understand that! https://perf.haskell.org/ghc/#revision/22bbc1cf209d44b8bb8897ae7a35f9eb af411b10 commit 22bbc1cf209d44b8bb8897ae7a35f9ebaf411b10 Author: Takano Akio <al...@hyper.cx> Make sure that `all`, `any`, `and`, and `or` fuse (#9848) nofib/allocs/circsim - 4.02% nofib/allocs/multiplier - 8.70% At least I do not only have bad news... Greetings, Joachim -- Joachim “nomeata” Breitner m...@joachim-breitner.de • http://www.joachim-breitner.de/ Jabber: nome...@joachim-breitner.de • GPG-Key: 0xF0FBF51F Debian Developer: nome...@debian.org
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