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Author SHA1 Message Date
Nadrieril
c96bd28ab3 Recompute MissingConstructors when needed 
This only happens in a slow (diagnostics) path, so the code clarity gain
is worth it.
 2020-10-27 00:46:33 +00:00
Nadrieril
b49f90760d Pass more things through PatCtxt 
This is even a perf improvement on the match-heavy benchmarks.
 2020-10-27 00:46:33 +00:00
Nadrieril
cdafd1e1bd Let MissingConstructors handle the subtleties of missing constructors 2020-10-27 00:46:32 +00:00
Nadrieril
1190e7275c Cache head constructor in PatStack 
Since the constructor is recomputed a lot, caching is worth it.
 2020-10-27 00:46:32 +00:00
Nadrieril
833089fbc9 Unify the two kinds of specialization by adding a Wildcard ctor 2020-10-27 00:46:32 +00:00
Nadrieril
41e7ca499d Inline specialize_one_pattern 2020-10-27 00:46:32 +00:00
Nadrieril
c511955a9f Factor out the two specialization steps 2020-10-27 00:46:32 +00:00
Nadrieril
6ad9f44a50 Clarify specialization into two steps 
First is checking for constructor overlap, second is extracting the
resulting fields.
 2020-10-27 00:46:32 +00:00
Nadrieril
7c4f94be48 Use pat_constructor to simplify specialize_one_pattern 2020-10-27 00:46:32 +00:00
Nadrieril
feb1e13960 Split split_grouped_constructor into smaller functions 2020-10-27 00:46:32 +00:00
Esteban Küber
cd259dbd19 Do not ICE on invalid input 2020-10-26 17:42:46 -07:00
Yuki Okushi
4236d27c9b
Rollup merge of #78412 - camelid:cleanup-hash-docs, r=jonas-schievink 
Improve formatting of hash collections docs
 2020-10-27 08:45:30 +09:00
Yuki Okushi
7824d9abbd
Rollup merge of #78405 - notriddle:patch-3, r=lcnr 
Fix typo in lint description
 2020-10-27 08:45:27 +09:00
Yuki Okushi
46b8e46fe1
Rollup merge of #78396 - josephlr:ermsb, r=petrochenkov 
Add compiler support for LLVM's x86_64 ERMSB feature

This change is needed for compiler-builtins to check for this feature
when implementing memcpy/memset. See:
  https://github.com/rust-lang/compiler-builtins/pull/365

Without this change, the following code compiles, but does nothing:
```rust
#[cfg(target_feature = "ermsb")]
pub unsafe fn ermsb_memcpy() { ... }
```

The change just does compile-time detection. I think that runtime
detection will have to come in a follow-up CL to std-detect.

Like all the CPU feature flags, this just references #44839

Signed-off-by: Joe Richey <joerichey@google.com>
 2020-10-27 08:45:24 +09:00
Yuki Okushi
f6f8764b25
Rollup merge of #78394 - rubik:master, r=m-ou-se 
fix(docs): typo in BufWriter documentation

This PR fixes a small typo in the BufWriter documentation. The current documentation looks like this:

![2020-10-26-111501_438x83_scrot](https://user-images.githubusercontent.com/238549/97160357-83d3a000-177c-11eb-8a35-3cdd3a7d89de.png)

The `<u8>` at the end is mangled by Markdown. This PR makes the `BufWriter` documentation like the `BufReader` one:

https://github.com/rust-lang/rust/blob/master/library/std/src/io/buffered/bufreader.rs#L16

I'm tagging Steve as per the Rustc dev guide.

r? @steveklabnik
 2020-10-27 08:45:20 +09:00
Yuki Okushi
98e2a9564f
Rollup merge of #78388 - camelid:regression-tests, r=lcnr 
Add some regression tests

Closes #75763.
Closes #76179.
 2020-10-27 08:45:17 +09:00
Yuki Okushi
b72d70ef61
Rollup merge of #78377 - LeSeulArtichaut:patch-docs, r=jonas-schievink 
Fix typo in debug statement
 2020-10-27 08:45:14 +09:00
Yuki Okushi
5a33fa5179
Rollup merge of #78375 - taiki-e:question-in-macros, r=kennytm 
Use ? in core/std macros
 2020-10-27 08:45:10 +09:00
Yuki Okushi
6abd2a59e7
Rollup merge of #78349 - JohnTitor:issue-75962, r=davidtwco 
Use its own `TypeckResults` to avoid ICE

Fixes #75962
 2020-10-27 08:45:07 +09:00
Yuki Okushi
ae5442582d
Rollup merge of #78348 - jyn514:pub-crate, r=GuillaumeGomez 
Make some functions private that don't have to be public

r? @GuillaumeGomez
 2020-10-27 08:45:04 +09:00
Yuki Okushi
727e93dc74
Rollup merge of #78347 - Rustin-Liu:rustin-patch-doc, r=kennytm 
Add lexicographical comparison doc

close https://github.com/rust-lang/rust/issues/72255
 2020-10-27 08:45:01 +09:00
Yuki Okushi
afdd148c03
Rollup merge of #78342 - oliviacrain:checkmate-pass, r=Mark-Simulacrum 
Use check-pass in single-use-lifetime ui tests

Rationale: the `single_use_lifetimes` lint is used during late name resolution, which is within the scope of `check-pass` and does not require codegen or linking.

Helps remove some FIXMES associated with #62277. Additionally tidies touched test files.
 2020-10-27 08:44:57 +09:00
Yuki Okushi
0b72ca6ea6
Rollup merge of #78332 - PoignardAzur:doc_E0308, r=camelid 
Update description for error E0308

Fixes #76462

r? @camelid
 2020-10-27 08:44:54 +09:00
Yuki Okushi
9d7db4891b
Rollup merge of #78298 - Aaron1011:fix/nll-ranked-test, r=Mark-Simulacrum 
Add test for bad NLL higher-ranked subtype

Fixes #57642
 2020-10-27 08:44:51 +09:00
Yuki Okushi
f3c94374b9
Rollup merge of #78219 - JohnTitor:print-def-path, r=estebank 
Prefer to use `print_def_path`

Follow-up of https://github.com/rust-lang/rust/pull/71310#discussion_r415438577
 2020-10-27 08:44:47 +09:00
Yuki Okushi
2c307fab49
Rollup merge of #77703 - Keruspe:system-libunwind, r=Mark-Simulacrum 
add system-llvm-libunwind config option

allows using the system-wide llvm-libunwind as the unwinder

Workaround for #76020
 2020-10-27 08:44:44 +09:00
Yuki Okushi
13e88d6366
Rollup merge of #76635 - scottmcm:slice-as-chunks, r=LukasKalbertodt 
Add [T]::as_chunks(_mut)

Allows getting the slices directly, rather than just through an iterator as in `array_chunks(_mut)`.  The constructors for those iterators are then written in terms of these methods, so the iterator constructors no longer have any `unsafe` of their own.

Unstable, of course. #74985
 2020-10-27 08:44:41 +09:00
Tyson Nottingham
df59a44fea rustc_span: improve bounds checks in byte_pos_to_line_and_col 
The effect of this change is to consider edge-case spans that start or
end at the position one past the end of a file to be valid during span
hashing and encoding. This change means that these spans will be
preserved across incremental compilation sessions when they are part of
a serialized query result, instead of causing the dummy span to be used.
 2020-10-26 16:34:04 -07:00
bors
a4d30a7b49 Auto merge of #77876 - tmiasko:simplify-locals, r=wesleywiser 
Remove unused set-discriminant statements and assignments regardless of rvalue

* Represent use counts with u32
* Unify use count visitors
* Change RemoveStatements visitor into a function
* Remove unused set-discriminant statements
* Use exhaustive match to clarify what is being optimized
* Remove unused assignments regardless of rvalue kind
 2020-10-26 23:22:39 +00:00
Nathan Whitaker
cb8b9012db Address review comments 2020-10-26 19:19:06 -04:00
Anthony Ramine
056942215c Implement -Z function-sections=yes|no 
This lets rustc users tweak whether all functions should be put in their own
TEXT section, using whatever default value the target defines if the flag
is missing.
 2020-10-26 23:26:43 +01:00
Nathan Whitaker
6ba127d3f0 Fix doctest 2020-10-26 18:19:49 -04:00
Nathan Whitaker
a1bb10e9b8 Remove lint from clippy 2020-10-26 18:19:48 -04:00
Nathan Whitaker
5ac1688f4b Remove lint from clippy 2020-10-26 18:19:48 -04:00
Nathan Whitaker
576eb2a30c Write docs for lint / fix review nit 2020-10-26 18:19:48 -04:00
Nathan Whitaker
1bcd2452fe Address review comments 2020-10-26 18:19:48 -04:00
Nathan Whitaker
737bfeffd2 Change to warn by default / fix typo 2020-10-26 18:19:48 -04:00
Nathan Whitaker
5643a0662a Tweak diagnostic 2020-10-26 18:19:47 -04:00
Nathan Whitaker
ce95122e95 Update doctest 2020-10-26 18:19:47 -04:00
Nathan Whitaker
8b65df06ce Address review comments 2020-10-26 18:19:47 -04:00
Nathan Whitaker
a2f4afe0f6 Add basic test 2020-10-26 18:19:46 -04:00
Nathan Whitaker
8cf1b0e1ad Uplift temporary-cstring-as-ptr into rustc 2020-10-26 18:19:40 -04:00
varkor
ac1454001c Suggest expressions that look like const generic arguments should be enclosed in brackets 
Co-Authored-By: Esteban Kuber <github@kuber.com.ar>
 2020-10-26 21:54:45 +00:00
Sergio Benitez
7c4fe00213 Ignore threaded capture tests on WASM w/o threads 2020-10-26 14:35:38 -07:00
bors
fd542592f0 Auto merge of #77187 - TimDiekmann:box-alloc, r=Amanieu 
Support custom allocators in `Box`

r? `@Amanieu`

This pull request requires a crater run.

### Prior work:
- #71873
- #58457
- [`alloc-wg`](https://github.com/TimDiekmann/alloc-wg)-crate

Currently blocked on:
- ~#77118~
- ~https://github.com/rust-lang/chalk/issues/615 (#77515)~
 2020-10-26 21:16:33 +00:00
Camelid
59f108885e Improve formatting of hash collections docs 2020-10-26 14:05:06 -07:00
Camelid
4641d2e6aa
Add FIXME note to const generics test 
Co-authored-by: lcnr <bastian_kauschke@hotmail.de>
 2020-10-26 13:56:31 -07:00
Camelid
94ed9455e8 Add some regression tests 2020-10-26 13:55:37 -07:00
Tyson Nottingham
a3623e0542 rustc_span: avoid hashing ExpnId tag when using cached hash 2020-10-26 13:43:48 -07:00
Anthony Ramine
53fa22a6fb Fix some outdated comments 2020-10-26 20:57:05 +01:00