Rollup merge of #60038 - michaelwoerister:pgo-updates-2, r=alexcrichton
Add codegen test for PGO instrumentation.
This PR adds a codegen test that makes sure that LLVM actually generates instrumentation code when we enable PGO instrumentation in `rustc`.
The second commit updates a test case to the new commandline option syntax introduced in #59874. Without the fix the test still works, but it confusingly creates a directory called `test.profraw`, which usually is the name of the _file_ where profiling data is collected.
Rollup merge of #59560 - matthewjasper:mir-generation-cleanup, r=oli-obk
MIR generation cleanup
* Handle the case where the body of a constant is a subtype of the type of the constant (see `mir_static_subtype.rs`).
* Move the evaluation of `ExprKind::Use` into `into.rs`, saving an unnecessary copy.
22 commits in b93ec30bbc7b1b5c2f44223249ab359bed2ed5a6..db919bc6bb9071566e9c4f05053672133eaac33e
2019-03-26 16:54:10 -0400 to 2019-04-15 20:11:03 -0400
- Link to chapters mentioned in chapter 12
- Split up a long sentence
- Unclear wording 4.3 (rust-lang/book#1907)
- Corrected error for array out of bounds (rust-lang/book#1900)
- Make lifetime explanation clearer (rust-lang/book#1901)
- Replace `T: 'a + Messenger` with `T: Messenger` (rust-lang/book#1831)
- Update range so matches rust-fmt . (rust-lang/book#1890)
- Adding trailing comma (rust-lang/book#1891)
- point 2018 book redirects to existing pages instead of index (rust-lang/book#1919)
- Update ch04-03-slices.md (rust-lang/book#1921)
- Update link for Russian translation. (rust-lang/book#1915)
- Ch7 layout (rust-lang/book#1917)
- Update the version of mdbook we use in-tree to match rust-lang/rust (rust-lang/book#1912)
- Fix spellingz
- Update listings in ch 19-6 for nostarch
- Add a high-level overview of the changes in this version of the book
- Fix Travis CI badge url (rust-lang/book#1893)
- Redo listing numbers in chapter 19 after removals
- Remove Advanced Lifetimes section completely
- Merge branch 'gh1780'
- Merge remote-tracking branch 'origin/master' into gh1567
- remove lifetime subtyping
## rust-by-example
4 commits in f68ef3d0f4959f6a7d92a08d9994b117f0f4d32d..1ff0f8e018838a710ebc0cc1a7bf74ebe73ad9f1
2019-03-12 15:32:12 -0300 to 2019-04-15 08:15:32 -0300
- Fix borrow so it fails in 2018 edition Fixes rust-lang/rust-by-example#1141 (rust-lang/rust-by-example#1152)
- Replace lvalue and rvalue with place and value (rust-lang/rust-by-example#1160)
- Mutate array in iter_mut() example (rust-lang/rust-by-example#1165)
- Fix a typo ("half" -> "halve") (rust-lang/rust-by-example#1172)
## rustc-guide
8 commits in 464cb5b166378dff64619081dd4c42533a1eb989..99e1b1d53656be08654df399fc200584aebb50e4
2019-03-23 18:39:14 -0500 to 2019-04-20 09:57:54 -0500
- Update BodyId description
- Update test-implementation chapter to current code
- update chalk with new organization
- move to subsection
- fix MovePathIndex link
- Update query chapter for the query macro rewrite
- subchapter with information about `--error-format json`
- Update query-evaluation-model-in-detail.md
6 commits in c02e0e7754a76886e55b976a3a4fac20100cd35d..fb29b147be4d9a1f8e24aba753a7e1de537abf61
2019-03-25 16:52:56 -0400 to 2019-04-22 19:10:29 -0400
- Fix link to copy_nonoverlapping (rust-lang-nursery/nomicon#134)
- Various unchecked-uninit improvements (rust-lang-nursery/nomicon#130)
- OOM behaviour in `vec-alloc.md` (rust-lang-nursery/nomicon#133)
- Added missing "things". (rust-lang-nursery/nomicon#131)
- Fix number agreement in subtyping chapter (rust-lang-nursery/nomicon#128)
- Minor improvements (rust-lang-nursery/nomicon#129)
Rollup merge of #59739 - cramertj:stabilize, r=withoutboats
Stabilize futures_api
cc https://github.com/rust-lang/rust/issues/59725.
Based on https://github.com/rust-lang/rust/pull/59733 and https://github.com/rust-lang/rust/pull/59119 -- only the last two commits here are relevant.
r? @withoutboats , @oli-obk for the introduction of `rustc_allow_const_fn_ptr`.
Rollup merge of #56278 - eddyb:mir-debuginfo-proof, r=nikomatsakis
Future-proof MIR for dedicated debuginfo.
This is #56231 without the last commit (the one that actually moves to `VarDebuginfo`).
Nothing should be broken, but it should no longer depend on debuginfo for anything else.
Auto merge of #58623 - Amanieu:hashbrown3, r=alexcrichton
Replace HashMap implementation with SwissTable (as an external crate)
This is the same as #56241 except that it imports `hashbrown` as an external crate instead of copying the implementation into libstd.
This includes a few API changes (all unstable):
- `try_reserve` is added to `HashSet`.
- Some trait bounds have been changed in the `raw_entry` API.
- `search_bucket` has been removed from the `raw_entry` API (doesn't work with SwissTable).
Auto merge of #60211 - Centril:rollup-akw4r85, r=Centril
Rollup of 6 pull requests
Successful merges:
- #59823 ([wg-async-await] Drop `async fn` arguments in async block )
- #59839 (Warn on unused results for operation methods on nums)
- #60146 (Update fonts used by rustdoc)
- #60169 (Warn when ignore-tidy-linelength is present, but no lines are too long)
- #60177 (Promote rust comments to rustdoc)
- #60191 (Add f16c target_feature)
Rollup merge of #60191 - gnzlbg:f16c, r=alexcrichton
Add f16c target_feature
This is requires for Intel 16-bit half-precision float intrinsics: https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=fp16&expand=1769 - see companion stdsimd PR: https://github.com/rust-lang-nursery/stdsimd/pull/737.
LLVM, Wikipedia CPUID page, and the Intel Dev Manual all call this CPUID feature "F16C", but the Intel intrinsics guide calls this "FP16C" - this is probably a bug in the intrinsics guide which we are tracking here: https://github.com/rust-lang-nursery/stdsimd/issues/738
Rollup merge of #60169 - varkor:tidy-unnecessary-ignore-newline, r=kennytm
Warn when ignore-tidy-linelength is present, but no lines are too long
It's easy for a `// ignore-tidy-linelength` to be added when there is a genuine need to ignore a file's line length, but then after refactoring the need is gone, but the tidy directive is not removed. This means that in the future, further editing may accidentally add unnecessarily long lines. This change forces `// ignore-tidy-linelength` to be used exactly when necessary, to make sure such changes are intentional.
Rollup merge of #60146 - Manishearth:font-update, r=QuietMisdreavus
Update fonts used by rustdoc
Our version of Source Serif Pro is pretty old and is causing issues on Linux, see https://bugzilla.mozilla.org/show_bug.cgi?id=1545317 . I took this opportunity to update all of the fonts we use.
Rollup merge of #59839 - KodrAus:must-use-num, r=sfackler
Warn on unused results for operation methods on nums
From a suggestion by @llogiq
Adds a `#[must_use]` attribute to operation methods on integers that take self by value as the first operand and another value as the second. It makes it clear that these methods return the result of the operation instead of mutating `self`, which is the source of a rather embarrassing bug I had in a codebase of mine recently...
```
warning: unused return value of `core::num::<impl i64>::wrapping_add` that must be used
--> src/main.rs:7:7
|
7 | self.value.wrapping_add(other);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: #[warn(unused_must_use)] on by default
= note: this returns the result of the operation, without modifying the original
```
If this is something we're on board with, we could do something similar for `f32` and `f64` too. There are probably other methods on integers that make sense.
Rollup merge of #59823 - davidtwco:issue-54716, r=cramertj
[wg-async-await] Drop `async fn` arguments in async block
Fixes #54716.
This PR modifies the HIR lowering (and some other places to make this work) so that unused arguments to a async function are always dropped inside the async move block and not at the end of the function body.
```
async fn foo(<pattern>: <type>) {
async move {
}
} // <-- dropped as you "exit" the fn
// ...becomes...
fn foo(__arg0: <ty>) {
async move {
let <pattern>: <ty> = __arg0;
} // <-- dropped as you "exit" the async block
}
```
However, the exact ordering of drops is not the same as a regular function, [as visible in this playground example](https://play.rust-lang.org/?version=stable&mode=debug&edition=2015&gist=be39af1a58e5d430be1eb3c722cb1ec3) - I believe this to be an unrelated issue. There is a [Zulip topic](https://rust-lang.zulipchat.com/#narrow/stream/187312-t-compiler.2Fwg-async-await/topic/.2354716.20drop.20order) for this.
David Wood [Tue, 23 Apr 2019 17:44:41 +0000 (18:44 +0100)]
Reduce noise and document test case.
This commit introduces a `assert_drop_order_after_poll` helper function
to the test case for this case to reduce repetitive noise and documents
what each function aims to test.
Auto merge of #60172 - varkor:tidy-double-trailing-newline, r=kennytm
Disallow double trailing newlines in tidy
This wasn't done previously in https://github.com/rust-lang/rust/pull/47064#issuecomment-354533010 as it affected too many files, but I think it's best to fix it now so that the number of files with double trailing newlines doesn't keep increasing.
David Wood [Mon, 22 Apr 2019 09:16:47 +0000 (10:16 +0100)]
Only make suggestion when type is `Copy`.
This commit makes the suggestion to dereference when a type implements
`Deref` only apply if the dereference would succeed (ie. the type is
`Copy`, otherwise a borrow check error would occur).
Auto merge of #59114 - matthewjasper:enable-migate-2015, r=pnkfelix
Enable NLL migrate mode on the 2015 edition
## What is in this PR?
* Remove the `-Zborrowck=ast` flag option from rustc.
* The default in the 2015 edition is now `-Zborrowck=migrate`.
* The 2018 edition default is unchanged: it's still `-Zborrowck=migrate`.
* Enable two-phase borrows (currently toggled via the `-Ztwo-phase-borrows` flag) on all editions.
* Remove most dead code that handled these options.
* Update tests for the above changes.
## What is *not* in this PR?
These are left for future PRs
* Use `-Zborrowck=mir` in NLL compare mode tests (#56993)
* Remove the `-Zborrowck=compare` option (#59193)
* Remove the `-Ztwo-phase-borrows` flag. It's kept, as a flag that does nothing so that perf.rlo has time to stop using it (cc @Mark-Simulacrum)
* Remove MIR typeck as its own MIR pass - it's now run by NLL.
* Enabling `-Zborrowck=mir` by default (#58781)
* Replace `allow_bind_by_move_patterns_with_guards` and `check_for_mutation_in_guard_via_ast_walk` with just using the feature gate. (#59192)
Soundness issues that are fixed by NLL will stay open until full NLL is emitting hard errors. However, these diagnostics and completeness issues can now be closed:
Auto merge of #60053 - Xanewok:serde-save-analysis, r=nrc
save-analysis: Use serde instead of libserialize to dump JSON data
This breaks the save-analysis infrastructure (which also includes `rls-{analysis, data, span}` crates) from depending on rustc_serialize and so we can start moving them to being supported on stable without implementing `Decodable` et al. by hand for data structures defined there.
Notable benefits:
- we drop the awkward raw byte `PathBuf` [serialization](https://gist.github.com/Xanewok/f4fe8564d0dc0c3ab1dbc244279ff895) (until now (de)serialized as `&[u8]`)
- [faster](https://github.com/serde-rs/json-benchmark) (hopefully noticeable for inner crate dependencies for the RLS workloads)
- we can easily explore the binary serialization backend (which we planned to do for save-analysis anyway)
~This should be merged together with an update to RLS (https://github.com/rust-lang/rls/pull/1435), which technically could be included right now because we can use the bundled `rls-analysis` here directly, however I'd prefer to publish this to crates.io first (https://github.com/rust-lang/rls/pull/1434, cc @nrc) and use the published version, instead.~
Includes https://github.com/rust-lang/rls/pull/1436.
@matklad @nikomatsakis This is also important for the potential RLS 1.0 - 2.0 bridge we talked about on Zulip today
David Wood [Sat, 20 Apr 2019 23:04:10 +0000 (00:04 +0100)]
Correct lowering order to avoid ICE after rebase.
This commit changes the order that arguments and bodies of async
functions are lowered so that when the body attempts to `lower_def` of a
upvar then the id has already been assigned by lowering the argument
first.
David Wood [Wed, 13 Mar 2019 16:10:27 +0000 (17:10 +0100)]
Introduce `ArgSource` for diagnostics.
This commit introduces an `ArgSource` enum that is lowered into the HIR
so that diagnostics can correctly refer to the argument pattern's
original name rather than the generated pattern.
David Wood [Wed, 13 Mar 2019 16:08:34 +0000 (17:08 +0100)]
Do not specify type in generated let bindings.
This avoids issues with `impl_trait_in_bindings` as the type from the
argument is normally used as the let binding, but `impl Trait` is
unstable in binding position.
David Wood [Tue, 12 Mar 2019 16:12:18 +0000 (17:12 +0100)]
Move `async fn` arguments into closure.
This commit takes advantage of `AsyncArgument` type that was added in a
previous commit to replace the arguments of the `async fn` in the HIR
and add statements to move the bindings from the new arguments to the
pattern from the old argument.
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