Speed up expansion #42533
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Speed up expansion #42533
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eddyb
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Jun 8, 2017
| impl MatcherPos { | ||
| fn push_match(&mut self, idx: usize, m: NamedMatch) { | ||
| let matches = Rc::make_mut(&mut self.matches[idx]); | ||
| matches.push(m); |
This reduces duplication, thereby increasing expansion speed.
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Pushed a theoretical fix for the run-pass-fulldeps test. I think it ran locally, but not sure. The full deps tests always get me. |
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Excellent! |
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📌 Commit 3d9ebf2 has been approved by |
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⌛ Testing commit 3d9ebf2 with merge d9d8f66... |
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💔 Test failed - status-appveyor |
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@bors retry Seems like a spurious issue. |
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Jun 10, 2017
…yfried Speed up expansion This reduces duplication, thereby increasing expansion speed. Based on tests with rust-uinput, this produces a 29x performance win (440 seconds to 15 seconds). I want to land this first, since it's a minimal patch, but with more changes to the macro parsing I can get down to 12 seconds locally. There is one FIXME added to the code that I'll keep for now since changing it will spread outward and increase the patch size, I think. Fixes #37074. r? @jseyfried cc @oberien
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☀️ Test successful - status-appveyor, status-travis |
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This reduces duplication, thereby increasing expansion speed. Based on tests with rust-uinput, this produces a 29x performance win (440 seconds to 15 seconds). I want to land this first, since it's a minimal patch, but with more changes to the macro parsing I can get down to 12 seconds locally.
There is one FIXME added to the code that I'll keep for now since changing it will spread outward and increase the patch size, I think.
Fixes #37074.
r? @jseyfried
cc @oberien