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2020-04-19Disallow values for `-C no-*` and `-Z no-*` options again.Nicholas Nethercote-17/+6
With the exception of `-C no-redzone`, because that could take a value before this PR. This partially undoes one of the earlier commits in this PR, which added the ability to take a value to all boolean options that lacked it. The help output for these options looks like this: ``` -C no-vectorize-slp=val -- disable LLVM's SLP vectorization pass ``` The "=val" part is a lie, but hopefully this will be fixed in the future.
2020-04-19Improve codegen option docs.Nicholas Nethercote-84/+101
This commit: - Adds "following values" indicators for all the options that are missing them. - Tweaks some wording and punctuation for consistency. - Rewords some things for clarity. - Removes the `no-integrated-as` entry, because that option was removed in #70345.
2020-04-09Fix JSON file_name documentation for macros.Eric Huss-2/+5
2020-04-07rustc_session: forbid lints override regardless of positionTobias Thiel-1/+1
2020-04-01Update -Ccodegen-units docs wrt incr. comp. in rustc book.Michael Woerister-3/+2
2020-03-23Reword unused variable warningAlex Tokarev-2/+2
2020-03-12Rollup merge of #69747 - spastorino:rename-rustc-guide, r=pietroalbiniMazdak Farrokhzad-2/+2
Rename rustc guide This is in preparation for https://github.com/rust-lang/rustc-guide/issues/470 Needs to be merged after we actually rename the guide. Have used this to rename: `git grep -l 'rustc_guide' | xargs sed -i 's/rustc_guide/rustc_dev_guide/g'` `git grep -l 'rustc-guide' | xargs sed -i 's/rustc-guide/rustc-dev-guide/g'` `git grep -l 'rustc guide' | xargs sed -i 's/rustc guide/rustc dev guide/g'`
2020-03-10rust-lang.github.io/rustc-dev-guide -> rustc-dev-guide.rust-lang.orgSantiago Pastorino-1/+1
2020-03-10Rename rustc_guide to rustc_dev_guideSantiago Pastorino-2/+2
2020-03-10Rename rustc-guide to rustc-dev-guideSantiago Pastorino-1/+1
2020-03-07Add new option to the documentation.O01eg-0/+1
2020-01-13rustc: add lint level cli ordering into the documentationTobias Thiel-0/+20
2019-12-01rustc_lint: Remove lint `plugin_as_library`Vadim Petrochenkov-12/+0
2019-11-23docs: fix lint name for `unused_variables`Ivan Kozik-1/+1
2019-11-08Rollup merge of #65785 - Centril:compat-to-error-2, r=oli-obkMazdak Farrokhzad-104/+27
Transition future compat lints to {ERROR, DENY} - Take 2 Follow up to https://github.com/rust-lang/rust/pull/63247 implementing https://github.com/rust-lang/rust/pull/63247#issuecomment-536295992. - `legacy_ctor_visibility` (ERROR) -- closes #39207 - `legacy_directory_ownership` (ERROR) -- closes #37872 - `safe_extern_static` (ERROR) -- closes #36247 - `parenthesized_params_in_types_and_modules` (ERROR) -- closes #42238 - `duplicate_macro_exports` (ERROR) - `nested_impl_trait` (ERROR) -- closes #59014 - `ill_formed_attribute_input` (DENY) -- transitions #57571 - `patterns_in_fns_without_body` (DENY) -- transitions #35203 r? @varkor cc @petrochenkov
2019-11-07Remove docs on --extern metadata precedence.Eric Huss-3/+2
2019-11-07Update extern linking documentation.Eric Huss-7/+27
2019-11-07Stabilize --extern flag without a path.Eric Huss-1/+6
2019-11-06patterns_in_fns_without_body -> denyMazdak Farrokhzad-40/+40
2019-11-06parenthesized_params_in_types_and_modules -> errorMazdak Farrokhzad-25/+0
2019-11-06safe_extern_static -> errorMazdak Farrokhzad-5/+0
2019-11-06legacy_directory_ownership -> errorMazdak Farrokhzad-12/+0
2019-11-06legacy_ctor_visibility -> errorMazdak Farrokhzad-35/+0
2019-11-03Attempt to clarify LTO and codegen-units.Eric Huss-10/+21
2019-10-26Be more specific with -C inline-threshold.Eric Huss-6/+14
2019-10-26Apply suggestions from kinnisonEric Huss-5/+5
Co-Authored-By: Daniel Silverstone <dsilvers@digital-scurf.org>
2019-10-26Update codegen option documentation.Eric Huss-68/+235
2019-10-22Target-feature documented as unsafe. rustc book and rustc -C help have been ↵togiberlin-1/+23
modified.
2019-10-21Rollup merge of #62330 - SimonSapin:no-drop-in-union-fields, r=RalfJungMazdak Farrokhzad-24/+0
Change untagged_unions to not allow union fields with drop This is a rebase of #56440, massaged to solve merge conflicts and make the test suite pass. Change untagged_unions to not allow union fields with drop Union fields may now never have a type with attached destructor. This for example allows unions to use arbitrary field types only by wrapping them in `ManuallyDrop` (or similar). The stable rule remains, that union fields must be `Copy`. We use the new rule for the `untagged_union` feature. Tracking issue: https://github.com/rust-lang/rust/issues/55149
2019-10-18Auto merge of #64925 - ehuss:document-json, r=Mark-Simulacrumbors-1/+240
Document JSON message output. This documents the JSON messages in the rustc book.
2019-10-14Add troubleshooting section to PGO chapter in rustc book.Michael Woerister-0/+11
2019-10-13Rollup merge of #65039 - HeroicKatora:deny-by-default-book, r=GuillaumeGomezMazdak Farrokhzad-0/+25
Document missing deny by default lints
2019-10-11Remove unions_with_drop_fields lintSimon Sapin-24/+0
Cases where it would trigger are now hard errors.
2019-10-03Document current deny by default lintsAndreas Molzer-0/+25
2019-10-02rustc book: nitpick SLP vectorizationRobin Kruppe-1/+1
SLP vectorization (in general and as implemented in LLVM) is not limited to loops.
2019-09-30Document JSON message output.Eric Huss-1/+240
2019-09-02Update xLTO compatibility table in rustc book.Michael Woerister-0/+1
2019-08-22Update single-use-lifetimesNaja Melan-1/+1
When using this, rustc emits a warning that the lint has been renamed (to having an 's' at the end)
2019-08-19rustc: implement argsfiles for command lineJeremy Fitzhardinge-0/+7
This makes `rustc` support `@path` arguments on the command line. The `path` is opened and the file is interpreted as new command line options which are logically inserted at that point in the command-line. The options in the file are one per line. The file is UTF-8 encoded, and may have either Unix or Windows line endings. It does not support recursive use of `@path`. This is useful for very large command lines, or when command-lines are being generated into files by other tooling.
2019-07-26rustc: Stabilize options for pipelined compilationAlex Crichton-0/+33
This commit stabilizes options in the compiler necessary for Cargo to enable "pipelined compilation" by default. The concept of pipelined compilation, how it's implemented, and what it means for rustc are documented in #60988. This PR is coupled with a PR against Cargo (rust-lang/cargo#7143) which updates Cargo's support for pipelined compliation to rustc, and also enables support by default in Cargo. (note that the Cargo PR cannot land until this one against rustc lands). The technical changes performed here were to stabilize the functionality proposed in #60419 and #60987, the underlying pieces to enable pipelined compilation support in Cargo. The issues have had some discussion during stabilization, but the newly stabilized surface area here is: * A new `--json` flag was added to the compiler. * The `--json` flag can be passed multiple times. * The value of the `--json` flag is a comma-separated list of directives. * The `--json` flag cannot be combined with `--color` * The `--json` flag must be combined with `--error-format=json` * The acceptable list of directives to `--json` are: * `diagnostic-short` - the `rendered` field of diagnostics will have a "short" rendering matching `--error-format=short` * `diagnostic-rendered-ansi` - the `rendered` field of diagnostics will be colorized with ansi color codes embedded in the string field * `artifacts` - JSON blobs will be emitted for artifacts being emitted by the compiler The unstable `-Z emit-artifact-notifications` and `--json-rendered` flags have also been removed during this commit as well. Closes #60419 Closes #60987 Closes #60988
2019-07-23Normalize use of backticks in compiler messages for docSamy Kacimi-22/+22
https://github.com/rust-lang/rust/issues/60532
2019-07-17Update mdbook, cargo, booksEric Huss-13/+13
This updates the last of the books using mdbook 0.1, finally removing it from the build.
2019-07-02Auto merge of #61268 - michaelwoerister:stabilize-pgo, r=alexcrichtonbors-0/+154
Stabilize support for Profile-guided Optimization This PR makes profile-guided optimization available via the `-C profile-generate` / `-C profile-use` pair of commandline flags and adds end-user documentation for the feature to the [rustc book](https://doc.rust-lang.org/rustc/). The PR thus ticks the last two remaining checkboxes of the [stabilization tracking issue](https://github.com/rust-lang/rust/issues/59913). From the tracking issue: > Profile-guided optimization (PGO) is a common optimization technique for ahead-of-time compilers. It works by collecting data about a program's typical execution (e.g. probability of branches taken, typical runtime values of variables, etc) and then uses this information during program optimization for things like inlining decisions, machine code layout, or indirect call promotion. If you are curious about how this can be used, there is a rendered version of the documentation this PR adds available [here]( https://github.com/michaelwoerister/rust/blob/stabilize-pgo/src/doc/rustc/src/profile-guided-optimization.md). r? @alexcrichton cc @rust-lang/compiler
2019-06-22Rollup merge of #61267 - michaelwoerister:update-xlto-table, r=alexcrichtonMazdak Farrokhzad-2/+3
rustc-book: Update the rustc/clang compatibility table for xLTO. Firefox is using these combinations successfully.
2019-06-21rustc-book: Add documentation on how to use PGO.Michael Woerister-0/+154
2019-06-08Remove some more `#![feature(custom_attribute)]`sVadim Petrochenkov-6/+4
2019-05-28rustc-book: Update the rustc/clang compatibility table for xLTO.Michael Woerister-2/+3
2019-05-24Fixed type-alias-bounds lint docCerberuser-4/+7
The example code under type-alias-bounds lint produced two warnings - one from the lint itself and another from the dead_code lint, and only the second one was in the doc. This looked like an error, so I've added `#[allow(dead_code)]` and replaced the example output with the expected one. [Playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&code=%23%5Ballow(dead_code)%5D%0Atype%20SendVec%3CT%3A%20Send%3E%20%3D%20Vec%3CT%3E%3B)
2019-05-17Auto merge of #49799 - hdhoang:46205_deny_incoherent_fundamental_impls, ↵bors-43/+2
r=nikomatsakis lint: convert incoherent_fundamental_impls into hard error *Summary for affected authors:* If your crate depends on one of the following crates, please upgrade to a newer version: - gtk-rs: upgrade to at least 0.4 - rusqlite: upgrade to at least 0.14 - nalgebra: upgrade to at least 0.15, or the last patch version of 0.14 - spade: upgrade or refresh the Cargo.lock file to use version 1.7 - imageproc: upgrade to at least 0.16 (newer versions no longer use nalgebra) implement #46205 r? @nikomatsakis
2019-05-12Update rustc book CLI docs.Eric Huss-11/+156
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