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| /// | ||
| /// Returning true means the type is known to be sized. Returning | ||
| /// `false` means nothing -- could be sized, might not be. | ||
| pub fn is_trivially_sized(&self, tcx: TyCtxt<'_, '_, 'tcx>) -> bool { |
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Huh, didn't we use to have something like this?
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I thought so too but I didn't find it...
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@bors r+ |
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📌 Commit 1341e66 has been approved by |
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⌛ Testing commit 1341e66 with merge 4b5307745b567835dbe3cbcaebba87a8a4b89d4c... |
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Aug 19, 2018
skip trivial `Sized` predicates This came to about a 2% win for me in cargo. Small, but hey. r? @eddyb
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☀️ Test successful - status-appveyor, status-travis |
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We got some nice improvements from this PR and/or #53258 and/or #53316, on both NLL and non-NLL benchmarks: |
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This came to about a 2% win for me in cargo. Small, but hey.
r? @eddyb