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in order to avoid constantly zeroing memory when it's not needed.
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Add trim_start, trim_end etc.; deprecate trim_left, trim_right, etc. in future
Adds the methods: `trim_start`, `trim_end`, `trim_start_matches` and `trim_end_matches`.
Deprecates `trim_left`, `trim_right`, `trim_left_matches` and `trim_right_matches` starting from Rust 1.33.0, three versions from when they'll initially be marked as being deprecated, using the future deprecation from https://github.com/rust-lang/rust/issues/30785 and https://github.com/rust-lang/rust/pull/51681.
Fixes https://github.com/rust-lang/rust/issues/30459.
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r=alexcrichton
ThinLTO: Don't keep files open after mmaping them.
Fixes #53947.
r? @alexcrichton
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Restore lldb build
commit 6c10142251 ("Update LLVM submodule") disabled the lldb build.
This patch updates the lldb and clang submodules to once again build
against the LLVM that is included in the Rust tree, and reverts the
.travis.yml changes from that patch.
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rustc: Prepare the `atomics` feature for wasm
This commit adds a few changes for atomic instructions on the
`wasm32-unknown-unknown` target. Atomic instructions are not yet stable in
WebAssembly itself but there are multiple implementations and LLVM has support
for the proposed instruction set, so let's work on exposing it!
Here there are a few inclusions:
* The `atomics` feature was whitelisted for LLVM, allowing code in Rust to
enable/disable/gate on this.
* The `singlethread` option is turned off for wasm when the `atomics` feature is
enabled. This means that by default wasm won't be lowering with atomics, but
when atomics are enabled globally we'll turn off single-threaded mode to
actually codegen atomics. This probably isn't what we'll want in the long term
but for now it should work.
* Finally the maximum atomic width is increased to 64 to reflect the current
wasm spec.
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Make json test output formatter represent "test_count" as num
fixes #53866
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Update Cargo.lock
This also includes major version bumps for the rand crate used by core, std, and alloc tests, among other crates (regex, etc.) used elsewhere. Since these are all internal there should be no user-visible changes.
r? @alexcrichton
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Allow to check if sync::Once is already initialized
Hi!
I propose to expose a way to check if a `Once` instance is initialized.
I need it in `once_cell`. `OnceCell` is effetively a pair of `(Once, UnsafeCell<Option<T>>)`, which can set the `T` only once. Because I can't check if `Once` is initialized, I am forced to add an indirection and check the value of ptr instead:
https://github.com/matklad/once_cell/blob/8127a81976c3f2f4c0860562c3f14647ebc025c0/src/lib.rs#L423-L429
https://github.com/matklad/once_cell/blob/8127a81976c3f2f4c0860562c3f14647ebc025c0/src/lib.rs#L457-L461
The `parking_lot`'s version of `Once` exposes the state as an enum: https://docs.rs/parking_lot/0.6.3/parking_lot/struct.Once.html#method.state.
I suggest, for now, just to add a simple `bool` function: this fits my use-case perfectly, exposes less implementation details, and is forward-compatible with more fine-grained state checking.
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commit 6c10142251 ("Update LLVM submodule") disabled the lldb build.
This patch updates the lldb and clang submodules to once again build
against the LLVM that is included in the Rust tree, and reverts the
.travis.yml changes from that patch.
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This pulls the same version of rustc-ap-* libs as RLS does.
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Link to more detailed docs in `slice::from_raw_parts_mut`
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A few cleanups and minor improvements to save_analysis
- calculate the capacity of some `Vec`s
- change`to_owned()` to `clone()` for the purposes of `lower_attributes`
- remove a superfluous `clone()`
- prefer `to_owned()` to `to_string()`
- a few other minor improvements
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miri engine: make sure we do not copy unsized data
r? @oli-obk
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whitelist some ARM features
required for rust-lang-nursery/stdsimd#557
r? @gnzlbg or @alexcrichton
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Add more const int ops
r? @oli-obk
Tracking Issue: #53718
list of `const fn`s in this PR:
- `feature = const_int_rotate`
- `rotate_left`
- `rotate_right`
- `feature = const_int_wrapping`
- `wrapping_add`
- `wrapping_sub`
- `wrapping_mul`
- `wrapping_shl`
- `wrapping_shr`
- `feature = const_int_overflowing`
- `overflowing_add`
- `overflowing_sub`
- `overflowing_mul`
- `overflowing_shl`
- `overflowing_shr`
- `feature = const_int_sign`
- `is_positive`
- `is_negative`
- `feature = const_int_conversion`
- `reverse_bits`
- `to_le_bytes`
- `to_ne_bytes`
- `from_be_bytes`
- `from_le_bytes`
- `from_ne_bytes`
- `reverse_bits`
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Enable ThinLTO with incremental compilation.
This is an updated version of #52309. This PR allows `rustc` to use (local) ThinLTO and incremental compilation at the same time. In theory this should allow for getting compile-time improvements for small changes while keeping the runtime performance of the generated code roughly the same as when compiling non-incrementally.
The difference to #52309 is that this version also caches the pre-LTO version of LLVM bitcode. This allows for another layer of caching:
1. if the module itself has changed, we have to re-codegen and re-optimize.
2. if the module itself has not changed, but a module it imported from during ThinLTO has, we don't need to re-codegen and don't need to re-run the first optimization phase. Only the second (i.e. ThinLTO-) optimization phase is re-run.
3. if neither the module itself nor any of its imports have changed then we can re-use the final, post-ThinLTO version of the module. (We might have to load its pre-ThinLTO version though so it's available for other modules to import from)
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Added pointer checking to sanity checks
r? @oli-obk
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Remove 'not reporting regions error due to nll' warning
Fix #52768
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save-analysis: record info for the types in `where` clauses
cc https://github.com/rust-lang-nursery/rls/issues/987
r? @eddyb
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Reduce number of syscalls in `rand`
This skips the initial zero-length `getrandom` call and
directly hands the user buffer to the operating system, saving one
`getrandom` syscall.
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Update clippy
r? @kennytm @oli-obk
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use char pattern for single-character splits: a.split("x") -> a.split('x')
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Fix of bug introduced by #53762 (tool_lints)
Before implementing backwards compat for tool lints, the `Tool` case when parsing cmdline lints was unreachable. This changed with #53762.
This fix is needed for rls test-pass. (@nrc)
r? @Manishearth
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Various small diagnostic and code clean up
- Point at def span on incorrect `panic` or `oom` function
- Use structured suggestion instead of note for `+=` that can be performed on a dereference of the left binding
- Small code formatting cleanup
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refactor match guard
This is the first step to implement RFC 2294: if-let-guard. Tracking issue: https://github.com/rust-lang/rust/issues/51114
The second step should be introducing another variant `IfLet` in the Guard enum. I separated them into 2 PRs for the convenience of reviewers.
r? @petrochenkov
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Add Error::source method per RFC 2504.
This implements part of RFC 2504.
* Adds `Error::source`, a replacement for `Error::cause` with the "right" signature, which will be instantly stable.
* Deprecates `Error::cause` in 1.33 (this choice was based on the precedent in #52994, which we haven't finalized).
* Redefines `Error::cause` to delegate to `Error::source` (the delegation can only go in this direction, not the other).
@rfcbot fcp merge
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Rollup of 9 pull requests
Successful merges:
- #53076 (set cfg(rustdoc) when rustdoc is running on a crate)
- #53622 (cleanup: Add main functions to some UI tests)
- #53769 (Also link Clippy repo in the CONTRIBUTING.md file)
- #53774 (Add rust-gdbgui script.)
- #53781 (bench: libcore: fix build failure of any.rs benchmark (use "dyn Any"))
- #53782 (Make Arc cloning mechanics clearer in module docs)
- #53790 (Add regression test for issue #52060)
- #53801 (Prevent duplicated impl on foreign types)
- #53850 (Nuke the `const_to_allocation` query)
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