Commit Graph

226 Commits

Author SHA1 Message Date
Nicholas Nethercote
9110d925d0 Remove -Ztime option.
The compiler currently has `-Ztime` and `-Ztime-passes`. I've used
`-Ztime-passes` for years but only recently learned about `-Ztime`.

What's the difference? Let's look at the `-Zhelp` output:
```
  -Z        time=val -- measure time of rustc processes (default: no)
  -Z time-passes=val -- measure time of each rustc pass (default: no)
```
The `-Ztime-passes` description is clear, but the `-Ztime` one is less so.
Sounds like it measures the time for the entire process?

No. The real difference is that `-Ztime-passes` prints out info about passes,
and `-Ztime` does the same, but only for a subset of those passes. More
specifically, there is a distinction in the profiling code between a "verbose
generic activity" and an "extra verbose generic activity". `-Ztime-passes`
prints both kinds, while `-Ztime` only prints the first one. (It took me
a close reading of the source code to determine this difference.)

In practice this distinction has low value. Perhaps in the past the "extra
verbose" output was more voluminous, but now that we only print stats for a
pass if it exceeds 5ms or alters the RSS, `-Ztime-passes` is less spammy. Also,
a lot of the "extra verbose" cases are for individual lint passes, and you need
to also use `-Zno-interleave-lints` to see those anyway.

Therefore, this commit removes `-Ztime` and the associated machinery. One thing
to note is that the existing "extra verbose" activities all have an extra
string argument, so the commit adds the ability to accept an extra argument to
the "verbose" activities.
2022-10-06 15:49:44 +11:00
Nicholas Nethercote
eea06de0c8 Fix some comments.
- It's `--print`, not `--prints`.
- `-Ztime` and `-Ztime-passes` print to stderr, not stdout.
2022-10-06 14:22:12 +11:00
lcnr
1fc86a63f4 rustc_typeck to rustc_hir_analysis 2022-09-27 10:37:23 +02:00
Pietro Albini
3975d55d98
remove cfg(bootstrap) 2022-09-26 10:14:45 +02:00
Takayuki Maeda
8fe936099a separate definitions and HIR owners
fix a ui test

use `into`

fix clippy ui test

fix a run-make-fulldeps test

implement `IntoQueryParam<DefId>` for `OwnerId`

use `OwnerId` for more queries

change the type of `ParentOwnerIterator::Item` to `(OwnerId, OwnerNode)`
2022-09-24 23:21:19 +09:00
khyperia
9a206a78eb Improve the help message for an invalid calling convention 2022-09-22 22:18:30 +02:00
Jhonny Bill Mena
a3396b2070 UPDATE - rename DiagnosticHandler macro to Diagnostic 2022-09-21 11:39:53 -04:00
Jhonny Bill Mena
19b348fed4 UPDATE - rename DiagnosticHandler trait to IntoDiagnostic 2022-09-21 11:39:52 -04:00
est31
173eb6f407 Only enable the let_else feature on bootstrap
On later stages, the feature is already stable.

Result of running:

rg -l "feature.let_else" compiler/ src/librustdoc/ library/ | xargs sed -s -i "s#\\[feature.let_else#\\[cfg_attr\\(bootstrap, feature\\(let_else\\)#"
2022-09-15 21:06:45 +02:00
SparrowLii
1a3ecbdb6a make mk_attr_id part of ParseSess 2022-09-14 08:49:10 +08:00
Eric Huss
ed0f0377e2 Fix ICE report flags display. 2022-09-08 16:08:53 -07:00
Oli Scherer
1fc9ef1edd tracing::instrument cleanup 2022-09-01 14:54:27 +00:00
yukang
77eb1aef52 add UI test for unpretty 2022-08-30 09:31:52 +08:00
yukang
9678751a88 pretty printing give proper erro message without panic 2022-08-28 09:56:18 +08:00
Adrian Tombu
d0401f7f47
Code cleaning 2022-08-25 19:04:00 +02:00
Adrian Tombu
bf7ce6a1a6
Replace spaghetti with a simple errors enum 2022-08-25 18:06:12 +02:00
Adrian Tombu
3f883b850d
Start adding enum errors for deserialize_rlink 2022-08-25 18:06:12 +02:00
Adrian Tombu
1c575c5fe0
Use std::io::Error and remove useless to_string 2022-08-25 18:06:12 +02:00
Adrian Tombu
e7ded9246c
Fixes fmt & SessionDiagnostic structs 2022-08-25 18:06:12 +02:00
Adrian Tombu
dbe39d835e
Start moving rustc_driver to SessionDiagnostic 2022-08-25 18:06:11 +02:00
Nicholas Nethercote
619b8abaa6 Use AttrVec in more places.
In some places we use `Vec<Attribute>` and some places we use
`ThinVec<Attribute>` (a.k.a. `AttrVec`). This results in various points
where we have to convert between `Vec` and `ThinVec`.

This commit changes the places that use `Vec<Attribute>` to use
`AttrVec`. A lot of this is mechanical and boring, but there are
some interesting parts:
- It adds a few new methods to `ThinVec`.
- It implements `MapInPlace` for `ThinVec`, and introduces a macro to
  avoid the repetition of this trait for `Vec`, `SmallVec`, and
  `ThinVec`.

Overall, it makes the code a little nicer, and has little effect on
performance. But it is a precursor to removing
`rustc_data_structures::thin_vec::ThinVec` and replacing it with
`thin_vec::ThinVec`, which is implemented more efficiently.
2022-08-22 07:35:33 +10:00
Chris Denton
27b9b166d1
Error on broken pipe but do not ICE 2022-08-02 01:08:50 +01:00
Miguel Guarniz
16513d689e Rename local_did to def_id
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-07-29 18:26:10 -04:00
Miguel Guarniz
25bdc8965e Change maybe_body_owned_by to take local def id
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-07-29 18:25:58 -04:00
David Wood
7bab769b58 lint: add bad opt access internal lint
Some command-line options accessible through `sess.opts` are best
accessed through wrapper functions on `Session`, `TyCtxt` or otherwise,
rather than through field access on the option struct in the `Session`.

Adds a new lint which triggers on those options that should be accessed
through a wrapper function so that this is prohibited. Options are
annotated with a new attribute `rustc_lint_opt_deny_field_access` which
can specify the error message (i.e. "use this other function instead")
to be emitted.

A simpler alternative would be to simply rename the options in the
option type so that it is clear they should not be used, however this
doesn't prevent uses, just discourages them. Another alternative would
be to make the option fields private, and adding accessor functions on
the option types, however the wrapper functions sometimes rely on
additional state from `Session` or `TyCtxt` which wouldn't be available
in an function on the option type, so the accessor would simply make the
field available and its use would be discouraged too.

Signed-off-by: David Wood <david.wood@huawei.com>
2022-07-27 11:24:27 +01:00
David Wood
f5e005f0ca session: disable internal lints for rustdoc
If an internal lint uses `typeck_results` or similar queries then that
can result in rustdoc checking code that it shouldn't (e.g. from other
platforms) and emit compilation errors.

Signed-off-by: David Wood <david.wood@huawei.com>
2022-07-27 11:24:27 +01:00
Joshua Nelson
3c9765cff1 Rename debugging_opts to unstable_opts
This is no longer used only for debugging options (e.g. `-Zoutput-width`, `-Zallow-features`).
Rename it to be more clear.
2022-07-13 17:47:06 -05:00
Joshua Nelson
17da4e06f2 Fix bug in rustdoc -Whelp
Previously, this printed the debugging options, not the lint options,
and only handled `-Whelp`, not `-A/-D/-F`.

This also fixes a few other misc issues:
- Fix `// check-stdout` for UI tests; previously it only worked for run-fail and compile-fail tests
- Add lint headers for tool lints, not just builtin lints
- Remove duplicate run-make test
2022-07-02 02:11:49 -05:00
Shivani Bhardwaj
e1b6f16fd4 Fix rustdoc argument error 2022-06-27 10:43:51 +02:00
Maybe Waffle
c1a2db3372 Move/rename lazy::Sync{OnceCell,Lazy} to sync::{Once,Lazy}Lock 2022-06-16 19:54:42 +04:00
klensy
4ea4e2e76d remove currently unused deps 2022-06-13 22:20:51 +03:00
bors
bb55bd449e Auto merge of #95565 - jackh726:remove-borrowck-mode, r=nikomatsakis
Remove migrate borrowck mode

Closes #58781
Closes #43234

# Stabilization proposal

This PR proposes the stabilization of `#![feature(nll)]` and the removal of `-Z borrowck`. Current borrow checking behavior of item bodies is currently done by first infering regions *lexically* and reporting any errors during HIR type checking. If there *are* any errors, then MIR borrowck (NLL) never occurs. If there *aren't* any errors, then MIR borrowck happens and any errors there would be reported. This PR removes the lexical region check of item bodies entirely and only uses MIR borrowck. Because MIR borrowck could never *not* be run for a compiled program, this should not break any programs. It does, however, change diagnostics significantly and allows a slightly larger set of programs to compile.

Tracking issue: #43234
RFC: https://github.com/rust-lang/rfcs/blob/master/text/2094-nll.md
Version: 1.63 (2022-06-30 => beta, 2022-08-11 => stable).

## Motivation

Over time, the Rust borrow checker has become "smarter" and thus allowed more programs to compile. There have been three different implementations: AST borrowck, MIR borrowck, and polonius (well, in progress). Additionally, there is the "lexical region resolver", which (roughly) solves the constraints generated through HIR typeck. It is not a full borrow checker, but does emit some errors.

The AST borrowck was the original implementation of the borrow checker and was part of the initially stabilized Rust 1.0. In mid 2017, work began to implement the current MIR borrow checker and that effort ompleted by the end of 2017, for the most part. During 2018, efforts were made to migrate away from the AST borrow checker to the MIR borrow checker - eventually culminating into "migrate" mode - where HIR typeck with lexical region resolving following by MIR borrow checking - being active by default in the 2018 edition.

In early 2019, migrate mode was turned on by default in the 2015 edition as well, but with MIR borrowck errors emitted as warnings. By late 2019, these warnings were upgraded to full errors. This was followed by the complete removal of the AST borrow checker.

In the period since, various errors emitted by the MIR borrow checker have been improved to the point that they are mostly the same or better than those emitted by the lexical region resolver.

While there do remain some degradations in errors (tracked under the [NLL-diagnostics tag](https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3ANLL-diagnostics), those are sufficiently small and rare enough that increased flexibility of MIR borrow check-only is now a worthwhile tradeoff.

## What is stabilized

As said previously, this does not fundamentally change the landscape of accepted programs. However, there are a [few](https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3ANLL-fixed-by-NLL) cases where programs can compile under `feature(nll)`, but not otherwise.

There are two notable patterns that are "fixed" by this stabilization. First, the `scoped_threads` feature, which is a continutation of a pre-1.0 API, can sometimes emit a [weird lifetime error](https://github.com/rust-lang/rust/issues/95527) without NLL. Second, actually seen in the standard library. In the `Extend` impl for `HashMap`, there is an implied bound of `K: 'a` that is available with NLL on but not without - this is utilized in the impl.

As mentioned before, there are a large number of diagnostic differences. Most of them are better, but some are worse. None are serious or happen often enough to need to block this PR. The biggest change is the loss of error code for a number of lifetime errors in favor of more general "lifetime may not live long enough" error. While this may *seem* bad, the former error codes were just attempts to somewhat-arbitrarily bin together lifetime errors of the same type; however, on paper, they end up being roughly the same with roughly the same kinds of solutions.

## What isn't stabilized

This PR does not completely remove the lexical region resolver. In the future, it may be possible to remove that (while still keeping HIR typeck) or to remove it together with HIR typeck.

## Tests

Many test outputs get updated by this PR. However, there are number of tests specifically geared towards NLL under `src/test/ui/nll`

## History

* On 2017-07-14, [tracking issue opened](https://github.com/rust-lang/rust/issues/43234)
* On 2017-07-20, [initial empty MIR pass added](https://github.com/rust-lang/rust/pull/43271)
* On 2017-08-29, [RFC opened](https://github.com/rust-lang/rfcs/pull/2094)
* On 2017-11-16, [Integrate MIR type-checker with NLL](https://github.com/rust-lang/rust/pull/45825)
* On 2017-12-20, [NLL feature complete](https://github.com/rust-lang/rust/pull/46862)
* On 2018-07-07, [Don't run AST borrowck on mir mode](https://github.com/rust-lang/rust/pull/52083)
* On 2018-07-27, [Add migrate mode](https://github.com/rust-lang/rust/pull/52681)
* On 2019-04-22, [Enable migrate mode on 2015 edition](https://github.com/rust-lang/rust/pull/59114)
* On 2019-08-26, [Don't downgrade errors on 2015 edition](https://github.com/rust-lang/rust/pull/64221)
* On 2019-08-27, [Remove AST borrowck](https://github.com/rust-lang/rust/pull/64790)
2022-06-07 05:04:14 +00:00
klensy
2d2577cdec typo: -Zcodegen-backend=llvm -Cpasses=list should work now 2022-06-05 07:02:32 +03:00
Jack Huey
410dcc9674 Fully stabilize NLL 2022-06-03 17:16:41 -04:00
bjorn3
15e0d8bdb1 Remove support for -Zast-json and -Zast-json-noexpand 2022-06-03 16:46:20 +00:00
bjorn3
fc1df4ff17 Use serde_json for target spec json 2022-06-03 16:46:19 +00:00
David Wood
9bfe0e39e4 errors: lazily load fallback fluent bundle
Loading the fallback bundle in compilation sessions that won't go on to
emit any errors unnecessarily degrades compile time performance, so
lazily create the Fluent bundle when it is first required.

Signed-off-by: David Wood <david.wood@huawei.com>
2022-04-13 02:44:59 +01:00
David Wood
3c2f864ffb session: opt for enabling directionality markers
Add an option for enabling and disabling Fluent's directionality
isolation markers in output. Disabled by default as these can render in
some terminals and applications.

Signed-off-by: David Wood <david.wood@huawei.com>
2022-04-05 07:01:03 +01:00
David Wood
d5119c5b9f errors: implement sysroot/testing bundle loading
Extend loading of Fluent bundles so that bundles can be loaded from the
sysroot based on the language requested by the user, or using a nightly
flag.

Sysroot bundles are loaded from `$sysroot/share/locale/$locale/*.ftl`.

Signed-off-by: David Wood <david.wood@huawei.com>
2022-04-05 07:01:02 +01:00
David Wood
7f91697b50 errors: implement fallback diagnostic translation
This commit updates the signatures of all diagnostic functions to accept
types that can be converted into a `DiagnosticMessage`. This enables
existing diagnostic calls to continue to work as before and Fluent
identifiers to be provided. The `SessionDiagnostic` derive just
generates normal diagnostic calls, so these APIs had to be modified to
accept Fluent identifiers.

In addition, loading of the "fallback" Fluent bundle, which contains the
built-in English messages, has been implemented.

Each diagnostic now has "arguments" which correspond to variables in the
Fluent messages (necessary to render a Fluent message) but no API for
adding arguments has been added yet. Therefore, diagnostics (that do not
require interpolation) can be converted to use Fluent identifiers and
will be output as before.
2022-04-05 07:01:02 +01:00
Jakub Beránek
b81d873cdf
Address review comments and add a test 2022-04-02 17:26:39 +02:00
Jakub Beránek
e0d4226677
Include a header in .rlink files to provide nicer error messages when a wrong file is parsed as .rlink 2022-04-02 16:50:08 +02:00
klensy
008fc79dcd Propagate parallel_compiler feature through rustc crates. Turned off feature gives change of builded crates: 238 -> 224. 2022-03-28 08:41:12 +03:00
Camille GILLOT
056951d628 Take &mut Diagnostic in emit_diagnostic.
Taking a Diagnostic by move would break the usual pattern
`diag.label(..).emit()`.
2022-03-20 20:36:08 +01:00
mark
bb8d4307eb rustc_error: make ErrorReported impossible to construct
There are a few places were we have to construct it, though, and a few
places that are more invasive to change. To do this, we create a
constructor with a long obvious name.
2022-03-16 10:35:24 -05:00
Dylan DPC
c1585a17a3
Rollup merge of #93913 - bjorn3:remove_everybody_loops, r=jackh726
Remove the everybody loops pass

It isn't used anymore by rustdoc.

Split out of https://github.com/rust-lang/rust/pull/92895. There has been some previous discussion there.
2022-03-04 02:06:38 +01:00
bjorn3
2f84484aac Remove the everybody loops pass
It isn't used anymore by rustdoc
2022-03-03 18:23:09 +01:00
cuishuang
00fffdddd2 all: fix some typos
Signed-off-by: cuishuang <imcusg@gmail.com>
2022-03-03 19:47:23 +08:00
mark
e489a94dee rename ErrorReported -> ErrorGuaranteed 2022-03-02 09:45:25 -06:00
Mark Rousskov
22c3a71de1 Switch bootstrap cfgs 2022-02-25 08:00:52 -05:00