Rollup of 9 pull requests #51948
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Rollup of 9 pull requests #51948
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When parsing as emplacement syntax (`x<-1`), suggest the correct syntax for comparison against a negative value (`x< -1`).
The current situation is something of a mess. - `IdxSetBuf` derefs to `IdxSet`. - `IdxSetBuf` implements `Clone`, and therefore has a provided `clone_from` method, which does allocation and so is expensive. - `IdxSet` has a `clone_from` method that is non-allocating and therefore cheap, but this method is not from the `Clone` trait. As a result, if you have an `IdxSetBuf` called `b`, if you call `b.clone_from(b2)` you'll get the expensive `IdxSetBuf` method, but if you call `(*b).clone_from(b2)` you'll get the cheap `IdxSetBuf` method. `liveness_of_locals()` does the former, presumably unintentionally, and therefore does lots of unnecessary allocations. Having a `clone_from` method that isn't from the `Clone` trait is a bad idea in general, so this patch renames it as `overwrite`. This avoids the unnecessary allocations in `liveness_of_locals()`, speeding up most NLL benchmarks, the best by 1.5%. It also means that calls of the form `(*b).clone_from(b2)` can be rewritten as `b.overwrite(b2)`.
…flatten, r=SimonSapin Stabilize Iterator::flatten in 1.29, fixes rust-lang#48213. This PR stabilizes [`Iterator::flatten`](https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.flatten) in *version 1.29* (1.28 goes to beta in 10 days, I don't think there's enough time to land it in that time, but let's see...). Tracking issue is: rust-lang#48213. cc @bluss re. itertools. r? @SimonSapin ping @pietroalbini -- let's do a crater run when this passes CI :)
…mertj Fix some doc links The futures crate CI always fails because of these intra doc links. I hope that this will fix this issue. r? @steveklabnik @cramertj Edit: I added @steveklabnik as reviewer because this PR also adjusts a link in `src/libstd/error.rs`
Update liblibc This updates the libc submodule
…tsakis Avoid needless allocations in `liveness_of_locals`. We don't need to replace the heap-allocated bitset, we can just overwrite its contents. This speeds up most NLL benchmarks, the best by 1.5%. r? @nikomatsakis
…rkor Suggest correct comparison against negative literal When parsing as emplacement syntax (`x<-1`), suggest the correct syntax for comparison against a negative value (`x< -1`). Fix rust-lang#45651.
Fix inconsequential typo in GlobalAlloc doc example
…estebank use literal span for concrete type suggestion Fixes rust-lang#51874. r? @estebank
improve the error message when `#[panic_implementation]` is missing closes rust-lang#51341 r? @nagisa cc @phil-opp
…chton Use in-tree libbacktrace on Fuchsia cc @abarth r? @alexcrichton (welcome back! 😄 )
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@bors r+ p=9 |
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📌 Commit 334ae88 has been approved by |
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⌛ Testing commit 334ae88 with merge 5bfae740db15666f7a4f8bf11bf4243b58c9059a... |
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💔 Test failed - status-travis |
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The job Click to expand the log.I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact |
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The job Click to expand the log.I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact |
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Successful merges:
liveness_of_locals. #51869 (Avoid needless allocations inliveness_of_locals.)#[panic_implementation]is missing #51921 (improve the error message when#[panic_implementation]is missing)Failed merges:
r? @ghost