Commit Graph

779 Commits

Author SHA1 Message Date
Jacob Pratt
49c82f31a8
Remove crate visibility usage in compiler 2022-05-20 20:04:54 -04:00
bors
e6a4afc3af Auto merge of #95418 - cjgillot:more-disk, r=davidtwco
Cache more queries on disk

One of the principles of incremental compilation is to allow saving results on disk to avoid recomputing them.
This PR investigates persisting a lot of queries whose result are to be saved into metadata.
Some of the queries are cheap reads from HIR, but we may also want to get rid of these reads for incremental lowering.
2022-05-20 20:49:55 +00:00
bors
c067287049 Auto merge of #97024 - lcnr:simplify_type-sus, r=<try>
`simplify_type` improvements and cursed docs

the existing `TreatParams` enum pretty much mixes everything up. Not sure why this looked right to me in #94057

This also includes two changes which impact perf:
- `ty::Projection` with inference vars shouldn't be treated as a rigid type, even if fully normalized
- `ty::Placeholder` only unifies with itself, so actually return `Some` for them

r? `@nikomatsakis`
2022-05-19 13:08:51 +00:00
Michael Woerister
6411fef3ab Properly apply path prefix remapping paths emitted into debuginfo. 2022-05-18 12:19:01 +02:00
Michael Woerister
583880b0ff Move logic for making potentially remapped paths absolute into helper method. 2022-05-18 11:42:43 +02:00
lcnr
db19e2bd01 fix simplify_type 2022-05-18 09:00:30 +02:00
bors
735efc0c70 Auto merge of #97012 - oli-obk:🦀_intrinsics, r=davidtwco
Add a query for checking whether a function is an intrinsic.

work towards #93145

This will reduce churn when we add more ways to declare intrinsics

r? `@scottmcm`
2022-05-17 09:39:26 +00:00
bors
7355d971a9 Auto merge of #96825 - kckeiks:remove-item-like-visitor-trait, r=cjgillot
Retire `ItemLikeVisitor` trait

Issue #95004
cc `@cjgillot`
2022-05-17 06:51:45 +00:00
Oli Scherer
0a6b69106e Add a query for checking whether a function is an intrinsic. 2022-05-16 07:07:44 +00:00
Vadim Petrochenkov
4fa24bcb54 rustc: Stricter checking for #[link] attributes 2022-05-15 02:45:47 +03:00
Miguel Guarniz
f975d05116 rename visit item-like methods
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-05-13 11:46:06 -04:00
Miguel Guarniz
93616dd539 remove ItemLikeVisitor and DeepVisitor
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-05-13 11:46:06 -04:00
Miguel Guarniz
e8ef5bf464 remove TraitVisitor
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-05-13 11:46:06 -04:00
Camille GILLOT
9900ea352b Cache more queries on disk. 2022-05-13 08:06:48 +02:00
lcnr
6c8265dc56 only_local: always check for misuse 2022-05-10 12:07:35 +02:00
lcnr
74b6d296db don't encode only locally used attrs 2022-05-10 08:09:37 +02:00
lcnr
32b13ac928 review 2022-05-09 18:40:18 +02:00
lcnr
d371ebe117 only compute codegen_fn_attrs where needed 2022-05-09 18:40:18 +02:00
lcnr
bd1d18660b store codegen_fn_attrs in crate metadata 2022-05-09 16:48:30 +02:00
Miguel Guarniz
3afc5ea201 use def_span and def_kind queries instead of calling tcx.hir() methods
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-05-06 12:11:05 -04:00
ridwanabdillahi
175a4eab84 Add support for a new attribute #[debugger_visualizer] to support embedding debugger visualizers into a generated PDB.
Cleanup `DebuggerVisualizerFile` type and other minor cleanup of queries.

Merge the queries for debugger visualizers into a single query.

Revert move of `resolve_path` to `rustc_builtin_macros`. Update dependencies in Cargo.toml for `rustc_passes`.

Respond to PR comments. Load visualizer files into opaque bytes `Vec<u8>`. Debugger visualizers for dynamically linked crates should not be embedded in the current crate.

Update the unstable book with the new feature. Add the tracking issue for the debugger_visualizer feature.

Respond to PR comments and minor cleanups.
2022-05-03 10:53:54 -07:00
Camille GILLOT
71b4e2d852 Box HIR Generics and Impl. 2022-04-30 13:51:49 +02:00
Jeremy Fitzhardinge
c6bafa7322 Add --json unused-externs-silent with original behaviour
Since Cargo wants to do its own fatal error handling for unused
dependencies, add the option `--json unused-externs-silent` which
has the original behaviour of not indicating non-zero exit status for
`deny`/`forbid`-level unused dependencies.
2022-04-27 10:04:25 -07:00
Jeremy Fitzhardinge
0529a13b5d Plumb through rustc_lint_defs::Level as enum rather than string. 2022-04-27 10:04:25 -07:00
bors
18b53cefdf Auto merge of #95604 - nbdd0121:used2, r=petrochenkov
Generate synthetic object file to ensure all exported and used symbols participate in the linking

Fix #50007 and #47384

This is the synthetic object file approach that I described in https://github.com/rust-lang/rust/pull/95363#issuecomment-1079932354, allowing all exported and used symbols to be linked while still allowing them to be GCed.

Related #93791, #95363

r? `@petrochenkov`
cc `@carbotaniuman`
2022-04-25 16:14:54 +00:00
Jeremy Fitzhardinge
9102edf208 Add support for nounused --extern flag
This adds `nounused` to the set of extern flags:
`--extern nounused:core=/path/to/core/libcore.rlib`.

The effect of this flag is to suppress `unused-crate-dependencies`
warnings relating to the crate.
2022-04-23 23:31:54 -07:00
Vadim Petrochenkov
e0b71fff2a [WIP] rustdoc: Resolve some more doc links early 2022-04-21 01:18:02 +03:00
Vadim Petrochenkov
e2d3a4f631 rustc_metadata: Store a flag telling whether an item may have doc links in its attributes
This should be cheap on rustc side, but it's significant optimization for rustdoc that won't need to decode and process attributes unnecessarily
2022-04-19 22:53:46 +03:00
Dylan DPC
9fad214593
Rollup merge of #96142 - cjgillot:no-crate-def-index, r=petrochenkov
Stop using CRATE_DEF_INDEX outside of metadata encoding.

`CRATE_DEF_ID` and `CrateNum::as_def_id` are almost always what we want.  We should not manipulate raw `DefIndex` outside of metadata encoding.
2022-04-19 14:43:21 +02:00
Dylan DPC
5f10d1312d
Rollup merge of #96086 - jsgf:remove-extern-location, r=davidtwco
Remove `--extern-location` and all associated code

`--extern-location` was an experiment to investigate the best way to
generate useful diagnostics for unused dependency warnings by enabling a
build system to identify the corresponding build config.

While I did successfully use this, I've since been convinced the
alternative `--json unused-externs` mechanism is the way to go, and
there's no point in having two mechanisms with basically the same
functionality.

This effectively reverts https://github.com/rust-lang/rust/pull/72603
2022-04-19 14:43:17 +02:00
Dylan DPC
ab59516dfd
Rollup merge of #94493 - oribenshir:feature/ISSUE-78543_async_fn_in_foreign_crate_diag_2, r=davidtwco
Improved diagnostic on failure to meet send bound on future in a foreign crate

Provide a better diagnostic on failure to meet send bound on futures in a foreign crate.

fixes #78543
2022-04-19 14:43:15 +02:00
Gary Guo
49cc6d1f84 Add SymbolExportInfo
This is currently a wrapper to `SymbolExportLevel` but it allows
later addition of extra information.
2022-04-18 20:50:56 +01:00
Camille GILLOT
07ee031763 Stop using CRATE_DEF_INDEX.
`CRATE_DEF_ID` and `CrateNum::as_def_id` are almost always what we want.
2022-04-17 12:14:42 +02:00
bors
edba282770 Auto merge of #95655 - kckeiks:create-hir-crate-items-query, r=cjgillot
Refactor HIR item-like traversal (part 1)

Issue  #95004

- Create hir_crate_items query which traverses tcx.hir_crate(()).owners to return a hir::ModuleItems
- use tcx.hir_crate_items in tcx.hir().items() to return an iterator of hir::ItemId
- use tcx.hir_crate_items to introduce a tcx.hir().par_items(impl Fn(hir::ItemId)) to traverse all items in parallel;

Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>

cc `@cjgillot`
2022-04-17 08:06:53 +00:00
bors
563ef23529 Auto merge of #95899 - petrochenkov:modchild2, r=cjgillot
rustc_metadata: Do not encode unnecessary module children

This should remove the syntax context shift and the special case for `ExternCrate` in decoder in https://github.com/rust-lang/rust/pull/95880.

This PR also shifts some work from decoding to encoding, which is typically useful for performance (but probably not much in this case).
r? `@cjgillot`
2022-04-16 22:04:10 +00:00
oribenshir
ebe3c56c6e Provide a better diagnostic on failure to meet send bound on futures in a foreign crate
Adding diagnostic data on generators to the crate metadata and using it to provide
a better diagnostic on failure to meet send bound on futures originated from a foreign crate
2022-04-16 14:09:40 +03:00
Jeremy Fitzhardinge
1be1157d75 Remove --extern-location and all associated code
`--extern-location` was an experiment to investigate the best way to
generate useful diagnostics for unused dependency warnings by enabling a
build system to identify the corresponding build config.

While I did successfully use this, I've since been convinced the
alternative `--json unused-externs` mechanism is the way to go, and
there's no point in having two mechanisms with basically the same
functionality.

This effectively reverts https://github.com/rust-lang/rust/pull/72603
2022-04-15 11:19:06 -07:00
Vadim Petrochenkov
5bee741a08 library: Move CStr to libcore, and CString to liballoc 2022-04-14 21:53:11 +03:00
Vadim Petrochenkov
233fa659f4 rustc_metadata: Do not encode unnecessary module children 2022-04-13 01:35:27 +03:00
Camille GILLOT
b4cf2cdf87 Simplify FixedSizeEncoding using const generics. 2022-04-10 16:59:51 +02:00
Camille GILLOT
b9287a83c5 Directly encode DefId in metadata. 2022-04-10 14:54:04 +02:00
Camille GILLOT
6142f50845 Directly encode DefPathHash in metadata. 2022-04-10 14:53:30 +02:00
Camille GILLOT
72be5b81df Directly encode DefKind in metadata. 2022-04-10 14:52:04 +02:00
Camille GILLOT
2129866dc0 Directly encode IsAsync in metadata. 2022-04-10 14:50:38 +02:00
Camille GILLOT
42820daf91 Directly encode Defaultness in metadata. 2022-04-10 14:48:59 +02:00
Camille GILLOT
ec7f80036d Directly encode Constness in metadata. 2022-04-10 14:47:52 +02:00
Camille GILLOT
81bac88e93 Directly encode ImplPolarity in metadata. 2022-04-10 14:46:52 +02:00
Miguel Guarniz
0b38596e88 use ItemId.def_id and avoid fetching Item 2022-04-09 13:58:46 -04:00
Miguel Guarniz
3d6f4c85ad remove ItemLikeVisitor impls and add fast paths using DefKind
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-04-08 12:00:23 -04:00
Miguel Guarniz
0d01ee9558 remove ItemLikeVisitor impls in incremental, interface, metadata and symbol_mangling crates
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-04-08 12:00:23 -04:00
Miguel Guarniz
0baf85e8b6 remove some uses of visit_all_item_likes in incremental, metadata and interface crates
Signed-off-by: Miguel Guarniz <mi9uel9@gmail.com>
2022-04-08 11:59:59 -04:00
Vadim Petrochenkov
69d6c3b2e6 rustdoc: Early doc link resolution fixes and refactorings 2022-04-07 00:19:48 +03:00
Loïc BRANSTETT
ccff48f97b Replace every String in Target(Options) with Cow<'static, str> 2022-04-03 21:29:57 +02:00
Camille GILLOT
15b2d1a97c Merge impl_constness and is_const_fn_raw. 2022-03-31 18:33:46 +02:00
Camille GILLOT
e62f483842 Create trait_def table. 2022-03-31 18:14:54 +02:00
Camille GILLOT
618138b923 Store fn constness in impl_constness. 2022-03-31 18:14:49 +02:00
Camille GILLOT
f2bf484e3a Introduce repr_options table. 2022-03-31 17:56:32 +02:00
Dylan DPC
1b7d6dbd30
Rollup merge of #95497 - nyurik:compiler-spell-comments, r=compiler-errors
Spellchecking compiler comments

This PR cleans up the rest of the spelling mistakes in the compiler comments. This PR does not change any literal or code spelling issues.
2022-03-31 04:57:28 +02:00
bors
a39ac5ae17 Auto merge of #95501 - Dylan-DPC:rollup-arx6sdc, r=Dylan-DPC
Rollup of 6 pull requests

Successful merges:

 - #93901 (Stabilize native library modifier syntax and the `whole-archive` modifier specifically)
 - #94806 (Fix `cargo run tidy`)
 - #94869 (Add the generic_associated_types_extended feature)
 - #95011 (async: Give predictable name to binding generated from .await expressions.)
 - #95251 (Reduce max hash in raw strings from u16 to u8)
 - #95298 (Fix double drop of allocator in IntoIter impl of Vec)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
2022-03-31 00:29:54 +00:00
bors
a40c595695 Auto merge of #95436 - cjgillot:static-mut, r=oli-obk
Remember mutability in `DefKind::Static`.

This allows to compute the `BodyOwnerKind` from `DefKind` only, and
removes a direct dependency of some MIR queries onto HIR.

As a side effect, it also simplifies metadata, since we don't need 4
flavours of `EntryKind::*Static` any more.
2022-03-30 22:09:56 +00:00
Vadim Petrochenkov
1004783ef9 Stabilize native library modifier syntax and the whole-archive modifier specifically 2022-03-30 23:53:21 +03:00
Yuri Astrakhan
5160f8f843 Spellchecking compiler comments
This PR cleans up the rest of the spelling mistakes in the compiler comments. This PR does not change any literal or code spelling issues.
2022-03-30 15:14:15 -04:00
lcnr
01d4e835c1 typo 2022-03-30 11:24:26 +02:00
lcnr
ee62514b16 fix rustdoc wrt builtin impls switch 2022-03-30 11:23:58 +02:00
lcnr
bef6f3e895 rework implementation for inherent impls for builtin types 2022-03-30 11:23:58 +02:00
Camille GILLOT
21a554caf6 Remember mutability in DefKind::Static.
This allows to compute the `BodyOwnerKind` from `DefKind` only, and
removes a direct dependency of some MIR queries onto HIR.

As a side effect, it also simplifies metadata, since we don't need 4
flavours of `EntryKind::*Static` any more.
2022-03-29 18:50:52 +02:00
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
bors
95561b336c Auto merge of #94584 - pnkfelix:inject-use-suggestion-sites, r=ekuber
More robust fallback for `use` suggestion

Our old way to suggest where to add `use`s would first look for pre-existing `use`s in the relevant crate/module, and if there are *no* uses, it would fallback on trying to use another item as the basis for the suggestion.

But this was fragile, as illustrated in issue #87613

This PR instead identifies span of the first token after any inner attributes, and uses *that* as the fallback for the `use` suggestion.

Fix #87613
2022-03-15 03:56:33 +00:00
Nicholas Nethercote
ca5525d564 Improve AdtDef interning.
This commit makes `AdtDef` use `Interned`. Much the commit is tedious
changes to introduce getter functions. The interesting changes are in
`compiler/rustc_middle/src/ty/adt.rs`.
2022-03-11 13:31:24 +11:00
Nicholas Nethercote
4f008e06c3 Clarify Layout interning.
`Layout` is another type that is sometimes interned, sometimes not, and
we always use references to refer to it so we can't take any advantage
of the uniqueness properties for hashing or equality checks.

This commit renames `Layout` as `LayoutS`, and then introduces a new
`Layout` that is a newtype around an `Interned<LayoutS>`. It also
interns more layouts than before. Previously layouts within layouts
(via the `variants` field) were never interned, but now they are. Hence
the lifetime on the new `Layout` type.

Unlike other interned types, these ones are in `rustc_target` instead of
`rustc_middle`. This reflects the existing structure of the code, which
does layout-specific stuff in `rustc_target` while `TyAndLayout` is
generic over the `Ty`, allowing the type-specific stuff to occur in
`rustc_middle`.

The commit also adds a `HashStable` impl for `Interned`, which was
needed. It hashes the contents, unlike the `Hash` impl which hashes the
pointer.
2022-03-07 13:41:47 +11:00
Felix S. Klock II
b82795244e Associate multiple with a crate too. 2022-03-03 18:45:25 -05:00
Matthias Krüger
fec7a79088
Rollup merge of #94057 - lcnr:simplify_type-uwu, r=nikomatsakis
improve comments for `simplify_type`

Should now correctly describe what's going on. Experimented with checking the invariant for projections
but that ended up requiring fairly involved changes. I assume that it is not possible to get unsoundness here,
at least for now and I can pretty much guarantee that it's impossible to trigger it by accident.

r? `````@nikomatsakis````` cc #92721
2022-03-03 20:01:44 +01:00
Loïc BRANSTETT
765205b9b8 Improve allowness of the unexpected_cfgs lint 2022-03-01 14:29:12 +01:00
bors
d981633ed6 Auto merge of #94290 - Mark-Simulacrum:bump-bootstrap, r=pietroalbini
Bump bootstrap to 1.60

This bumps the bootstrap compiler to 1.60 and cleans up cfgs and Span's rustc_pass_by_value (enabled by the bootstrap bump).
2022-02-25 18:34:02 +00:00
Matthias Krüger
133de6e1e1
Rollup merge of #94252 - lcnr:def_kind-encoding, r=cjgillot
don't special case `DefKind::Ctor` in encoding

considering that we still use `DefKind::Ctor` for these in `Res`, this seems weird and definitely felt like a bug when encountering it while working on #89862.

r? `@cjgillot`
2022-02-25 14:14:37 +01:00
Mark Rousskov
22c3a71de1 Switch bootstrap cfgs 2022-02-25 08:00:52 -05:00
bors
d4de1f230c Auto merge of #93368 - eddyb:diagbld-guarantee, r=estebank
rustc_errors: let `DiagnosticBuilder::emit` return a "guarantee of emission".

That is, `DiagnosticBuilder` is now generic over the return type of `.emit()`, so we'll now have:
* `DiagnosticBuilder<ErrorReported>` for error (incl. fatal/bug) diagnostics
  * can only be created via a `const L: Level`-generic constructor, that limits allowed variants via a `where` clause, so not even `rustc_errors` can accidentally bypass this limitation
  * asserts `diagnostic.is_error()` on emission, just in case the construction restriction was bypassed (e.g. by replacing the whole `Diagnostic` inside `DiagnosticBuilder`)
  * `.emit()` returns `ErrorReported`, as a "proof" token that `.emit()` was called
    (though note that this isn't a real guarantee until after completing the work on
     #69426)
* `DiagnosticBuilder<()>` for everything else (warnings, notes, etc.)
  * can also be obtained from other `DiagnosticBuilder`s by calling `.forget_guarantee()`

This PR is a companion to other ongoing work, namely:
* #69426
  and it's ongoing implementation:
  #93222
  the API changes in this PR are needed to get statically-checked "only errors produce `ErrorReported` from `.emit()`", but doesn't itself provide any really strong guarantees without those other `ErrorReported` changes
* #93244
  would make the choices of API changes (esp. naming) in this PR fit better overall

In order to be able to let `.emit()` return anything trustable, several changes had to be made:
* `Diagnostic`'s `level` field is now private to `rustc_errors`, to disallow arbitrary "downgrade"s from "some kind of error" to "warning" (or anything else that doesn't cause compilation to fail)
  * it's still possible to replace the whole `Diagnostic` inside the `DiagnosticBuilder`, sadly, that's harder to fix, but it's unlikely enough that we can paper over it with asserts on `.emit()`
* `.cancel()` now consumes `DiagnosticBuilder`, preventing `.emit()` calls on a cancelled diagnostic
  * it's also now done internally, through `DiagnosticBuilder`-private state, instead of having a `Level::Cancelled` variant that can be read (or worse, written) by the user
  * this removes a hazard of calling `.cancel()` on an error then continuing to attach details to it, and even expect to be able to `.emit()` it
  * warnings were switched to *only* `can_emit_warnings` on emission (instead of pre-cancelling early)
  * `struct_dummy` was removed (as it relied on a pre-`Cancelled` `Diagnostic`)
* since `.emit()` doesn't consume the `DiagnosticBuilder` <sub>(I tried and gave up, it's much more work than this PR)</sub>,
  we have to make `.emit()` idempotent wrt the guarantees it returns
  * thankfully, `err.emit(); err.emit();` can return `ErrorReported` both times, as the second `.emit()` call has no side-effects *only* because the first one did do the appropriate emission
* `&mut Diagnostic` is now used in a lot of function signatures, which used to take `&mut DiagnosticBuilder` (in the interest of not having to make those functions generic)
  * the APIs were already mostly identical, allowing for low-effort porting to this new setup
  * only some of the suggestion methods needed some rework, to have the extra `DiagnosticBuilder` functionality on the `Diagnostic` methods themselves (that change is also present in #93259)
  * `.emit()`/`.cancel()` aren't available, but IMO calling them from an "error decorator/annotator" function isn't a good practice, and can lead to strange behavior (from the caller's perspective)
  * `.downgrade_to_delayed_bug()` was added, letting you convert any `.is_error()` diagnostic into a `delay_span_bug` one (which works because in both cases the guarantees available are the same)

This PR should ideally be reviewed commit-by-commit, since there is a lot of fallout in each.

r? `@estebank` cc `@Manishearth` `@nikomatsakis` `@mark-i-m`
2022-02-25 00:46:04 +00:00
Vadim Petrochenkov
179ce18c5c resolve/metadata: Stop encoding macros as reexports 2022-02-24 22:55:40 +03:00
Vadim Petrochenkov
50568b8ee5 metadata: Tweak the way in which declarative macros are encoded
To make the `macro_rules` flag more readily available without decoding everything else
2022-02-24 22:55:37 +03:00
Vadim Petrochenkov
17b1afdbb2 resolve: Fix incorrect results of opt_def_kind query for some built-in macros
Previously it always returned `MacroKind::Bang` while some of those macros are actually attributes and derives
2022-02-24 22:54:36 +03:00
lcnr
ae45e8a638 don't special case DefKind::Ctor in encoding 2022-02-24 14:46:11 +01:00
bors
7ccfe2ff1d Auto merge of #94129 - cjgillot:rmeta-table, r=petrochenkov
Back more metadata using per-query tables

r? `@ghost`
2022-02-24 10:02:26 +00:00
Eduard-Mihai Burtescu
b7e95dee65 rustc_errors: let DiagnosticBuilder::emit return a "guarantee of emission". 2022-02-23 06:38:52 +00:00
Mark Rousskov
2098ea6eba Provide copy-free access to raw Decoder bytes 2022-02-22 18:11:59 -05:00
lcnr
55f938b589 update docs for simplify_type 2022-02-21 13:53:34 +01:00
est31
2ef8af6619 Adopt let else in more places 2022-02-19 17:27:43 +01:00
Camille GILLOT
7afcf9fcd1 Add generator_kind table. 2022-02-19 15:41:41 +01:00
Camille GILLOT
381d32e7d6 Add fn_arg_names table. 2022-02-19 15:41:41 +01:00
Camille GILLOT
6cc96a45ac Add asyncness table. 2022-02-19 15:41:41 +01:00
Camille GILLOT
7bacdb760f Add rendered_const table. 2022-02-19 15:41:41 +01:00
Camille GILLOT
f8fd9733b6 Add mir_const_qualifs table. 2022-02-19 15:41:41 +01:00
Camille GILLOT
0b7ee3aca2 Drop ImplData. 2022-02-19 15:41:41 +01:00
Camille GILLOT
c7c306f94a Do not decode span when we only need the name. 2022-02-19 15:41:41 +01:00
Camille GILLOT
f07f1bfc60 Encode metadata using queries. 2022-02-19 15:41:36 +01:00
Camille GILLOT
227d912489 Stop interning stability. 2022-02-19 15:39:42 +01:00
Vadim Petrochenkov
0da7adc828 rustdoc: Collect traits in scope for lang items 2022-02-18 16:11:23 +08:00
Matthias Krüger
637d8b89e8
Rollup merge of #94011 - est31:let_else, r=lcnr
Even more let_else adoptions

Continuation of #89933, #91018, #91481, #93046, #93590.
2022-02-17 23:00:59 +01:00
est31
60f969a4f2 Adopt let_else in even more places 2022-02-16 22:43:39 +01:00
Nicholas Nethercote
a95fb8b150 Overhaul Const.
Specifically, rename the `Const` struct as `ConstS` and re-introduce `Const` as
this:
```
pub struct Const<'tcx>(&'tcx Interned<ConstS>);
```
This now matches `Ty` and `Predicate` more closely, including using
pointer-based `eq` and `hash`.

Notable changes:
- `mk_const` now takes a `ConstS`.
- `Const` was copy, despite being 48 bytes. Now `ConstS` is not, so need a
  we need separate arena for it, because we can't use the `Dropless` one any
  more.
- Many `&'tcx Const<'tcx>`/`&Const<'tcx>` to `Const<'tcx>` changes
- Many `ct.ty` to `ct.ty()` and `ct.val` to `ct.val()` changes.
- Lots of tedious sigil fiddling.
2022-02-15 16:19:59 +11:00
lcnr
0efc6c02cb fast_reject: remove StripReferences 2022-02-14 07:37:14 +01:00
Camille GILLOT
6c2ee885e6 Ensure that queries only return Copy types. 2022-02-09 20:07:38 +01:00
bors
2a8dbdb1e2 Auto merge of #93561 - Amanieu:more-unwind-abi, r=nagisa
Add more *-unwind ABI variants

The following *-unwind ABIs are now supported:
- "C-unwind"
- "cdecl-unwind"
- "stdcall-unwind"
- "fastcall-unwind"
- "vectorcall-unwind"
- "thiscall-unwind"
- "aapcs-unwind"
- "win64-unwind"
- "sysv64-unwind"
- "system-unwind"

cc `@rust-lang/wg-ffi-unwind`
2022-02-08 03:20:05 +00:00
bors
88fb06a1f3 Auto merge of #93539 - petrochenkov:doclink, r=camelid,michaelwoerister
rustdoc: Collect traits in scope for foreign inherent impls

Inherent impls can be inlined for variety of reasons (impls of reexported types, impls available through `Deref`, impls inlined for unclear reasons like in https://github.com/rust-lang/rust/pull/88679#issuecomment-1023929480).
If an impl is inlined, then doc links in its comments are resolved and we may need the set of traits that are in scope at that impl's definition point.
So in this PR we simply collect traits in scope for *all* inherent impls from other crates if their `Self` type is public, which is very similar for the strategy for trait impls previously used in https://github.com/rust-lang/rust/pull/88679.

Fixes https://github.com/rust-lang/rust/issues/93476
Fixes https://github.com/rust-lang/rust/pull/88679#issuecomment-1026520300
Fixes https://github.com/rust-lang/rust/pull/88679#issuecomment-1023929480
2022-02-05 18:27:06 +00:00
Vadim Petrochenkov
afc0030ed3 rustdoc: Collect traits in scope for foreign inherent impls 2022-02-04 22:26:33 +08:00
Nicholas Nethercote
2826586b91 Add a comment about possible mismatches. 2022-02-04 13:10:05 +11:00
Nicholas Nethercote
2b8d3dea63 Remove staticlibs local variable. 2022-02-04 13:10:00 +11:00
Nicholas Nethercote
6dcda2aaec Clean up find_library_crate.
By introducing prefix and suffix variables for all file types, and
renaming some variables.
2022-02-04 10:55:32 +11:00
Amanieu d'Antras
547b4e601e Add more *-unwind ABI variants
The following *-unwind ABIs are now supported:
- "C-unwind"
- "cdecl-unwind"
- "stdcall-unwind"
- "fastcall-unwind"
- "vectorcall-unwind"
- "thiscall-unwind"
- "aapcs-unwind"
- "win64-unwind"
- "sysv64-unwind"
- "system-unwind"
2022-02-02 22:21:24 +01:00
Nicholas Nethercote
0ba47f3216 Make SearchPathFile::file_name_str non-optional.
Currently, it can be `None` if the conversion from `OsString` fails, in
which case all searches will skip over the `SearchPathFile`.

The commit changes things so that the `SearchPathFile` just doesn't get
created in the first place. Same behaviour, but slightly simpler code.
2022-02-02 13:16:25 +11:00
Nicholas Nethercote
89b61ea09f Inline and remove FileSearch::search.
It has only a single callsite, and having all the code in one place will
make it possible to optimize the search.
2022-02-02 09:06:34 +11:00
Nicholas Nethercote
47b5d95db8 Remove FileMatch.
It's returned from `FileSearch::search` but it's only used to print some
debug info.
2022-02-02 09:06:34 +11:00
lcnr
a1a30f7548 add a rustc::query_stability lint 2022-02-01 10:15:59 +01:00
bors
788b1fe5b7 Auto merge of #88679 - petrochenkov:doctrscope, r=GuillaumeGomez
rustdoc: Pre-calculate traits that are in scope for doc links

This eliminates one more late use of resolver (part of #83761).
At early doc link resolution time we go through parent modules of items from the current crate, reexports of items from other crates, trait items, and impl items collected by `collect-intra-doc-links` pass, determine traits that are in scope in each such module, and put those traits into a map used by later rustdoc passes.
r? `@jyn514`
2022-01-26 09:10:27 +00:00
bors
8cdb3cd94e Auto merge of #93095 - Aaron1011:remove-assoc-ident, r=cjgillot
Store a `Symbol` instead of an `Ident` in `AssocItem`

This is the same idea as #92533, but for `AssocItem` instead
of `VariantDef`/`FieldDef`.

With this change, we no longer have any uses of
`#[stable_hasher(project(...))]`
2022-01-25 18:53:45 +00:00
Vadim Petrochenkov
00ba815a58 rustdoc: Pre-calculate traits that are in scope for doc links
This eliminates one more late use of resolver
2022-01-25 21:45:21 +08:00
bors
e7825f2b69 Auto merge of #90842 - pierwill:localdefid-indexmap, r=wesleywiser
Use `indexmap` to avoid sorting `LocalDefId`s

See discussion in https://github.com/rust-lang/rust/pull/90408#discussion_r745935459.

Related to work on https://github.com/rust-lang/rust/issues/90317.
2022-01-24 22:04:55 +00:00
pierwill
4f89224f7f Use an indexmap to avoid sorting LocalDefIds
Update `indexmap` to 1.8.0.

Bless test
2022-01-22 22:34:16 -06:00
Nicholas Nethercote
416399dc10 Make Decodable and Decoder infallible.
`Decoder` has two impls:
- opaque: this impl is already partly infallible, i.e. in some places it
  currently panics on failure (e.g. if the input is too short, or on a
  bad `Result` discriminant), and in some places it returns an error
  (e.g. on a bad `Option` discriminant). The number of places where
  either happens is surprisingly small, just because the binary
  representation has very little redundancy and a lot of input reading
  can occur even on malformed data.
- json: this impl is fully fallible, but it's only used (a) for the
  `.rlink` file production, and there's a `FIXME` comment suggesting it
  should change to a binary format, and (b) in a few tests in
  non-fundamental ways. Indeed #85993 is open to remove it entirely.

And the top-level places in the compiler that call into decoding just
abort on error anyway. So the fallibility is providing little value, and
getting rid of it leads to some non-trivial performance improvements.

Much of this commit is pretty boring and mechanical. Some notes about
a few interesting parts:
- The commit removes `Decoder::{Error,error}`.
- `InternIteratorElement::intern_with`: the impl for `T` now has the same
  optimization for small counts that the impl for `Result<T, E>` has,
  because it's now much hotter.
- Decodable impls for SmallVec, LinkedList, VecDeque now all use
  `collect`, which is nice; the one for `Vec` uses unsafe code, because
  that gave better perf on some benchmarks.
2022-01-22 10:38:31 +11:00
Aaron Hill
c8941d3e48
Store a Symbol instead of an Ident in AssocItem
This is the same idea as #92533, but for `AssocItem` instead
of `VariantDef`/`FieldDef`.

With this change, we no longer have any uses of
`#[stable_hasher(project(...))]`
2022-01-19 17:13:21 -05:00
Matthias Krüger
dd621a4c5c
Rollup merge of #90782 - ricobbe:binutils-dlltool, r=michaelwoerister
Implement raw-dylib support for windows-gnu

Add support for `#[link(kind = "raw-dylib")]` on windows-gnu targets.  Work around binutils's linker's inability to read import libraries produced by LLVM by calling out to the binutils `dlltool` utility to create an import library from a temporary .DEF file; this approach is effectively a slightly refined version of `@mati865's` earlier attempt at this strategy in PR #88801.  (In particular, this attempt at this strategy adds support for `#[link_ordinal(...)]` as well.)

In support of #58713.
2022-01-18 22:00:42 +01:00
Matthias Krüger
32d85c0b5a
Rollup merge of #92164 - WaffleLapkin:rustc_must_implement_one_of_attr, r=Aaron1011
Implement `#[rustc_must_implement_one_of]` attribute

This PR adds a new attribute — `#[rustc_must_implement_one_of]` that allows changing the "minimal complete definition" of a trait. It's similar to GHC's minimal `{-# MINIMAL #-}` pragma, though `#[rustc_must_implement_one_of]` is weaker atm.

Such attribute was long wanted. It can be, for example, used in `Read` trait to make transitions to recently added `read_buf` easier:
```rust
#[rustc_must_implement_one_of(read, read_buf)]
pub trait Read {
    fn read(&mut self, buf: &mut [u8]) -> Result<usize> {
        let mut buf = ReadBuf::new(buf);
        self.read_buf(&mut buf)?;
        Ok(buf.filled_len())
    }

    fn read_buf(&mut self, buf: &mut ReadBuf<'_>) -> Result<()> {
        default_read_buf(|b| self.read(b), buf)
    }
}

impl Read for Ty0 {}
//^ This will fail to compile even though all `Read` methods have default implementations

// Both of these will compile just fine
impl Read for Ty1 {
    fn read(&mut self, buf: &mut [u8]) -> Result<usize> { /* ... */ }
}
impl Read for Ty2 {
    fn read_buf(&mut self, buf: &mut ReadBuf<'_>) -> Result<()> { /* ... */ }
}
```

For now, this is implemented as an internal attribute to start experimenting on the design of this feature. In the future we may want to extend it:
- Allow arbitrary requirements like `a | (b & c)`
- Allow multiple requirements like
  - ```rust
    #[rustc_must_implement_one_of(a, b)]
    #[rustc_must_implement_one_of(c, d)]
    ```
- Make it appear in rustdoc documentation
- Change the syntax?
- Etc

Eventually, we should make an RFC and make this (or rather similar) attribute public.

---

I'm fairly new to compiler development and not at all sure if the implementation makes sense, but at least it passes tests :)
2022-01-17 20:07:02 +01:00
Cameron Steffen
45db716902 Replace NestedVisitorMap with NestedFilter 2022-01-16 16:02:36 -06:00
Vadim Petrochenkov
4549b13571 rustc_metadata: Switch all decoder methods from vectors to iterators
Also remove unnecessary `is_proc_macro_crate` checks from decoder
2022-01-16 14:14:39 +08:00
Camille GILLOT
67727aa7c3 Reduce use of local_def_id_to_hir_id. 2022-01-15 21:26:25 +01:00
Matthias Krüger
f84d35f0b8
Rollup merge of #92277 - petrochenkov:cmrval2, r=jackh726
rustc_metadata: Stop passing `CrateMetadataRef` by reference (step 1)

It's already a (fat) reference.
Double referencing it creates lifetime issues for its methods that want to return iterators.

---
Extracted from https://github.com/rust-lang/rust/pull/92245 for a perf run.
The PR changes a lot of symbol names due to function signature changes, so it's hard to do differential profiling, let's spend some machine time instead.
2022-01-13 08:11:21 +01:00
bors
124555a69e Auto merge of #92169 - In-line:no-cache-selector-lrc, r=Mark-Simulacrum
Remove ArenaCacheSelector for visible_parent_map query ( + LRC)
2022-01-12 21:04:40 +00:00
Richard Cobbe
0cf7fd1208 Call out to binutils' dlltool for raw-dylib on windows-gnu platforms. 2022-01-12 10:25:35 -08:00
Aaron Hill
450ef8613c
Store a Symbol instead of an Ident in VariantDef/FieldDef
The field is also renamed from `ident` to `name. In most cases,
we don't actually need the `Span`. A new `ident` method is added
to `VariantDef` and `FieldDef`, which constructs the full `Ident`
using `tcx.def_ident_span()`. This method is used in the cases
where we actually need an `Ident`.

This makes incremental compilation properly track changes
to the `Span`, without all of the invalidations caused by storing
a `Span` directly via an `Ident`.
2022-01-11 10:16:22 -05:00
Vadim Petrochenkov
c4471b0b9c rustc_metadata: Stop passing CrateMetadataRef by reference
It's already a (fat) reference.
Double referencing it creates lifetime issues for its methods that want to return iterators.
2022-01-09 22:02:17 +08:00
bors
f7bb8e3677 Auto merge of #92690 - matthiaskrgr:rollup-rw0oz05, r=matthiaskrgr
Rollup of 8 pull requests

Successful merges:

 - #92055 (Add release notes for 1.58)
 - #92490 (Move crate drop-down to search results page)
 - #92510 (Don't resolve blocks in foreign functions)
 - #92573 (expand: Refactor InvocationCollector visitor for better code reuse)
 - #92608 (rustdoc: Introduce a resolver cache for sharing data between early doc link resolution and later passes)
 - #92657 (Implemented const casts of raw pointers)
 - #92671 (Make `Atomic*::from_mut` return `&mut Atomic*`)
 - #92673 (Remove useless collapse toggle on "all items" page)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
2022-01-09 12:43:37 +00:00
Matthias Krüger
51001b35bd
Rollup merge of #92608 - petrochenkov:doctrscope3, r=CraftSpider
rustdoc: Introduce a resolver cache for sharing data between early doc link resolution and later passes

The refactoring parts of https://github.com/rust-lang/rust/pull/88679, shouldn't cause any slowdowns.
r? `@jyn514`
2022-01-09 13:38:32 +01:00
bors
e19ca1d946 Auto merge of #92086 - petrochenkov:modchild, r=jackh726
rustc_metadata: Optimize and document module children decoding

The first commit limits the item in the `item_children`/`each_child_of_item` query to modules (in name resolution sense) and adds a corresponding assertion.
The `associated_item_def_ids` query collecting children of traits and impls specifically now uses a simplified implementation not decoding unnecessary data instead of `each_child_of_item`, this gives a nice performance improvement.

The second commit does some renaming that clarifies the terminology used for all items in a module vs `use` items only.
2022-01-09 10:02:49 +00:00
Maybe Waffle
5ab40c8f99 Implement #[rustc_must_implement_one_of] attribute 2022-01-09 12:21:23 +03:00
bors
02fe61b381 Auto merge of #92497 - bjorn3:remove_lazy_meta_min_size, r=eddyb
Remove LazyMeta::min_size

It is extremely conservative and as such barely reduces the size of encoded Lazy distances, but does increase complexity.
2022-01-09 01:29:22 +00:00
Vadim Petrochenkov
4b03fd910c rustc_middle: Rename Export to ModChild and add some comments
Also rename `module_exports`/`export_map` to `module_reexports`/`reexport_map` for clarity.
2022-01-09 09:22:07 +08:00
Vadim Petrochenkov
3051f6e9c4 rustc_metadata: Rename item_children(_untracked) to module_children(_untracked)
And `each_child_of_item` to `for_each_module_child`
2022-01-09 09:22:06 +08:00
Vadim Petrochenkov
96c6a50e96 rustc_metadata: Optimize and document module children decoding 2022-01-09 09:22:04 +08:00
bjorn3
717d4b35f8 Remove LazyMeta::min_size
It is extremely conservative and as such barely reduces the size of
encoded Lazy distances, but does increase complexity.
2022-01-08 13:55:33 +01:00
Matthew Jasper
d7595853a2 Add trait_item_def_id to AssocItem
This allows avoiding some lookups by name
2022-01-07 12:28:12 -08:00
Matthew Jasper
0b1ab91d66 Deserialization less in associated_item_def_ids 2022-01-07 11:50:42 -08:00
Vadim Petrochenkov
5acd1f91a0 rustdoc: Introduce a resolver cache for sharing data between early doc link resolution and later passes 2022-01-07 16:21:53 +08:00
Vadim Petrochenkov
1b88007af0 rustc_metadata: Split fn get_implementations_for_trait into two functions 2022-01-06 15:13:22 +08:00
Vadim Petrochenkov
4e8855bdc9 rustc_metadata: Make opt_item_ident in decoder faster and stricter
By avoiding formatting and allocations in the no-ident case, and by making the span mandatory if the ident exists.

Use the optimized `opt_item_ident` to cleanup `fn each_child_of_item`
2022-01-06 14:57:17 +08:00
Vadim Petrochenkov
4c6120c386 rustc_metadata: Make attribute decoding slightly faster and stricter
Rename `CStore::item_attrs` -> `CStore::item_attrs_untracked` top follow conventions
2022-01-06 12:13:41 +08:00
Vadim Petrochenkov
636fd495c8 rustc_middle: Add a method for getting a SimplifiedType definition/ID
Import `SimplifiedType` more
2022-01-06 12:04:16 +08:00
bors
8f3238f898 Auto merge of #90128 - joshtriplett:stabilize-symbol-mangling-version, r=wesleywiser
Stabilize -Z symbol-mangling-version=v0 as -C symbol-mangling-version=v0

This allows selecting `v0` symbol-mangling without an unstable option. Selecting `legacy` still requires -Z unstable-options.

This does not change the default symbol-mangling-version. See https://github.com/rust-lang/rust/pull/89917 for a pull request changing the default. Rationale, from #89917:

Rust's current mangling scheme depends on compiler internals; loses information about generic parameters (and other things) which makes for a worse experience when using external tools that need to interact with Rust symbol names; is inconsistent; and can contain . characters which aren't universally supported. Therefore, Rust has defined its own symbol mangling scheme which is defined in terms of the Rust language, not the compiler implementation; encodes information about generic parameters in a reversible way; has a consistent definition; and generates symbols that only use the characters A-Z, a-z, 0-9, and _.

Support for the new Rust symbol mangling scheme has been added to upstream tools that will need to interact with Rust symbols (e.g. debuggers).

This pull request allows enabling the new v0 symbol-mangling-version.

See #89917 for references to the implementation of v0, and for references to the tool changes to decode Rust symbols.
2022-01-02 15:49:23 +00:00
bors
f7934f693b Auto merge of #92034 - petrochenkov:nolinknores, r=joshtriplett
Remove effect of `#[no_link]` attribute on name resolution

Previously it hid all non-macro names from other crates.
This has no relation to linking and can change name resolution behavior in some cases (e.g. glob conflicts), in addition to just producing the "unresolved name" errors.

I can kind of understand the possible reasoning behind the current behavior - if you can use names from a `no_link` crates then you can use, for example, functions too, but whether it will actually work or produce link-time errors will depend on random factors like inliner behavior.
(^^^ This is not the actual reason why the current behavior exist, I've looked through git history and it's mostly accidental.)

I think this risk is ok for such an obscure attribute, and we don't need to specifically prevent use of non-macro items from such crates.
(I'm not actually sure why would anyone use `#[no_link]` on a crate, even if it's macro only, if you aware of any use cases, please share. IIRC, at some point it was used for crates implementing custom derives - the now removed legacy ones, not the current proc macros.)

Extracted from https://github.com/rust-lang/rust/pull/91795.
2022-01-02 06:28:34 +00:00
Josh Triplett
bbf4b6699e Stabilize -Z symbol-mangling-version as -C symbol-mangling-version
This allows selecting `v0` symbol-mangling without an unstable option.
Selecting `legacy` still requires -Z unstable-options.

Continue supporting -Z symbol-mangling-version for compatibility for
now, but show a deprecation warning for it.
2022-01-01 15:51:02 -08:00
Vadim Petrochenkov
2dd50d5eb2 rustc_metadata: Use a query for collecting all traits in encoder 2022-01-01 13:06:50 +08:00
bors
984a6bf9c1 Auto merge of #92175 - Aaron1011:fix-missing-source-file, r=cjgillot
Import `SourceFile`s from crate before decoding foreign `Span`

Fixes #92163
Fixes #92014

When writing to the incremental cache, we encode all `Span`s
we encounter, regardless of whether or not their `SourceFile`
comes from the local crate, or from a foreign crate.

When we decode a `Span`, we use the `StableSourceFileId` we encoded
to locate the matching `SourceFile` in the current session. If this
id corresponds to a `SourceFile` from another crate, then we need to
have already imported that `SourceFile` into our current session.

This usually happens automatically during resolution / macro expansion,
when we try to resolve definitions from other crates. In certain cases,
however, we may try to load a `Span` from a transitive dependency
without having ever imported the `SourceFile`s from that crate, leading
to an ICE.

This PR fixes the issue by enconding the `SourceFile`'s `CrateNum`
when we encode a `Span`. During decoding, we call `imported_source_files()`
when we encounter a foreign `CrateNum`, which ensure that all
`SourceFile`s from that crate are imported into the current session.
2021-12-31 16:38:23 +00:00
bors
78fd0f633f Auto merge of #92244 - petrochenkov:alltraits, r=cjgillot
rustc_metadata: Encode list of all crate's traits into metadata

While working on https://github.com/rust-lang/rust/pull/88679 I noticed that rustdoc is casually doing something quite expensive, something that is used only for error reporting in rustc - collecting all traits from all crates in the dependency tree.

This PR trades some minor extra time spent by metadata encoder in rustc for major gains for rustdoc (and for rustc runs with errors, which execute the `all_traits` query for better diagnostics).
2021-12-29 19:22:33 +00:00
bors
442248d6bc Auto merge of #92153 - petrochenkov:foreignchild, r=cjgillot
rustc_metadata: Merge items from `extern` blocks into their parent modules during metadata encoding rather than during metadata decoding
2021-12-28 13:47:22 +00:00
Vadim Petrochenkov
90e371027e rustc_metadata: Encode list of all crate's traits into metadata 2021-12-28 19:31:51 +08:00
bors
e91ad5fc62 Auto merge of #92159 - petrochenkov:decoditer, r=cjgillot
rustc_metadata: Switch crate data iteration from a callback to iterator

The iteration looks more conventional this way, and some allocations are avoided.
2021-12-28 07:32:43 +00:00
Vadim Petrochenkov
a5efceacd1 rustc_metadata: Merge items from extern blocks into their parent modules
during metadata encoding rather than during metadata decoding
2021-12-28 14:25:41 +08:00
Matthias Krüger
a11414d62e
Rollup merge of #92161 - petrochenkov:misclean, r=cjgillot
resolve: Minor miscellaneous cleanups from #89059

`@bors` rollup=always
2021-12-27 21:42:27 +01:00
bors
aad4f1039f Auto merge of #92156 - petrochenkov:ctorkind, r=davidtwco
rustc_metadata: Merge `get_ctor_def_id` and `get_ctor_kind`

Also avoid decoding the whole `ty::AssocItem` to get a `has_self` flag.

A small optimization and cleanup extracted from https://github.com/rust-lang/rust/pull/89059.
2021-12-24 17:09:21 +00:00
Aaron Hill
d9220924dc
Import SourceFiles from crate before decoding foreign Span
Fixes #92163
Fixes #92014

When writing to the incremental cache, we encode all `Span`s
we encounter, regardless of whether or not their `SourceFile`
comes from the local crate, or from a foreign crate.

When we decode a `Span`, we use the `StableSourceFileId` we encoded
to locate the matching `SourceFile` in the current session. If this
id corresponds to a `SourceFile` from another crate, then we need to
have already imported that `SourceFile` into our current session.

This usually happens automatically during resolution / macro expansion,
when we try to resolve definitions from other crates. In certain cases,
however, we may try to load a `Span` from a transitive dependency
without having ever imported the `SourceFile`s from that crate, leading
to an ICE.

This PR fixes the issue by calling `imported_source_files()`
when we encounter a `SourceFile` with a foreign `CrateNum`.
This ensures that all `SourceFile`s from that crate are imported
into the current session.
2021-12-23 12:56:12 -05:00
pierwill
8df9248591 Remove PartialOrd and Ord from LocalDefId
Implement `Ord`, `PartialOrd` for SpanData
2021-12-22 10:50:57 -06:00
Vadim Petrochenkov
337ced2ef0 rustc_metadata: Merge get_ctor_def_id and get_ctor_kind
Also avoid decoding the whole `ty::AssocItem` to get a `has_self` flag
2021-12-22 11:05:54 +08:00
Alik Aslanyan
852dea89b2
Remove ArenaCacheSelector for visible_parent_map query.
Optimize visible_parent_map to use LRC to prevent unnecessary cloning
2021-12-21 22:40:21 +04:00
Vadim Petrochenkov
1324100800 resolve: Minor miscellaneous cleanups from #89059 2021-12-21 20:26:41 +08:00
Vadim Petrochenkov
046a682899 rustc_metadata: Switch crate data iteration from a callback to iterator
The iteration looks more conventional this way, and some allocations are avoided.
2021-12-21 19:46:19 +08:00
Michael Goulet
1f2cf1e9b7 Prefer visibility paths where items are not named _ 2021-12-20 19:50:15 -08:00
bors
a41a6925ba Auto merge of #91957 - nnethercote:rm-SymbolStr, r=oli-obk
Remove `SymbolStr`

This was originally proposed in https://github.com/rust-lang/rust/pull/74554#discussion_r466203544. As well as removing the icky `SymbolStr` type, it allows the removal of a lot of `&` and `*` occurrences.

Best reviewed one commit at a time.

r? `@oli-obk`
2021-12-19 09:31:37 +00:00
Matthias Krüger
9e720a8aae
Rollup merge of #91926 - SylvanB:remove_in_band_lifetimes_from_rustc_metadata, r=nagisa
Remove `in_band_lifetimes` from `rustc_metadata`

Another for #91867
2021-12-18 14:49:39 +01:00
Vadim Petrochenkov
54cd824819 Remove effect of #[no_link] attribute on name resolution
Previously it hid all non-macro names from other crates.
This has no relation to linking and can change name resolution behavior in some cases (e.g. glob conflicts), in addition to just producing the "unresolved name" errors
2021-12-17 20:14:30 +08:00
Matthias Krüger
a97384d94c
Rollup merge of #92001 - fee1-dead:dmbic-xcrate-fix, r=oli-obk
Fix default_method_body_is_const when used across crates

r? `@oli-obk`

unblocks #91439.
2021-12-16 17:23:13 +01:00
Deadbeef
4bb65e1c79
Fix default_method_body_is_const when used across crates 2021-12-16 21:38:54 +08:00
Nicholas Nethercote
056d48a2c9 Remove unnecessary sigils around Symbol::as_str() calls. 2021-12-15 17:32:14 +11:00
Nicholas Nethercote
8cddcd39ba Remove SymbolStr.
By changing `as_str()` to take `&self` instead of `self`, we can just
return `&str`. We're still lying about lifetimes, but it's a smaller lie
than before, where `SymbolStr` contained a (fake) `&'static str`!
2021-12-15 13:30:26 +11:00
Sylvan Bowdler
8679e17723 Remove in_band_lifetimes from rustc_metadata 2021-12-14 17:35:27 +00:00
lcnr
dcd716fee2 extend simplify_type 2021-12-14 13:32:42 +01:00
bors
6bda5b331c Auto merge of #90716 - euclio:libloading, r=cjgillot
replace dynamic library module with libloading

This PR deletes the `rustc_metadata::dynamic_lib` module in favor of the popular and better tested [`libloading` crate](https://github.com/nagisa/rust_libloading/).

We don't benefit from `libloading`'s symbol lifetimes since we end up leaking the loaded library in all cases, but the call-sites look much nicer by improving error handling and abstracting away some transmutes. We also can remove `rustc_metadata`'s direct dependencies on `libc` and `winapi`.

This PR also adds an exception for `libloading` (and its license) to tidy, so this will need sign-off from the compiler team.
2021-12-12 17:28:52 +00:00
bors
82575a1d6f Auto merge of #91715 - the8472:bump-rmeta-fromat-version, r=Mark-Simulacrum
Bump rmeta version to fix rustc_serialize ICE

#91407 changed the serialization format which leads to ICEs for nightly users such as #91663 and linked issues. The issue can be solved by running `cargo clean`. But bumping the metadata version should lead to the cached files being discarded, avoiding the issue entirely.
2021-12-11 01:00:14 +00:00
The 8472
0696e79f27 Bump rmeta version to fix rustc_serialize ICE
#91407 changed the serialization format which leads to ICEs for nightly users such as #91663 and linked issue.
Bumping the metadata version should lead to the cached files being discarded instead.
2021-12-09 18:00:36 +01:00
est31
15de4cbc4b Remove redundant [..]s 2021-12-09 00:01:29 +01:00
Andy Russell
923f939791
replace dynamic library module with libloading 2021-12-06 12:03:47 -05:00
Michael
2ca9333011 Improve suggestion for extern crate self error message 2021-12-01 21:59:54 +00:00
Michael
62f4ce993e Stop treating extern crate loading failures as fatal errors 2021-12-01 21:04:13 +00:00
bors
90912e68ab Auto merge of #91330 - cjgillot:no-ee-features, r=Aaron1011
Remove eval_always for lib_features.

r? `@Aaron1011`
2021-11-30 07:40:08 +00:00
Camille GILLOT
877b2d79d9 Remove eval_always for lib_features. 2021-11-28 21:13:36 +01:00
Camille GILLOT
5fb4648757 Take a LocalDefId in expect_*item. 2021-11-28 21:09:45 +01:00
inquisitivecrystal
9a987b0466 Add ty::Visibility::is_public() 2021-11-09 18:35:00 -08:00
Matthias Krüger
fd5a4f42ad
Rollup merge of #90701 - michaelwoerister:more-artifact-sizes, r=davidtwco
Record more artifact sizes during self-profiling.

This PR adds artifact size recording for

- "linked artifacts" (executables, RLIBs, dylibs, static libs)
- object files
- dwo files
- assembly files
- crate metadata
- LLVM bitcode files
- LLVM IR files
- codegen unit size estimates

Currently the identifiers emitted for these are hard-coded as string literals. Is it worth adding constants to https://github.com/rust-lang/measureme/blob/master/measureme/src/rustc.rs instead? We don't do that for query names and the like -- but artifact kinds might be more stable than query names.
2021-11-09 19:00:45 +01:00
Matthias Krüger
fd74c93403
Rollup merge of #89561 - nbdd0121:const_typeck, r=nikomatsakis
Type inference for inline consts

Fixes #78132
Fixes #78174
Fixes #81857
Fixes #89964

Perform type checking/inference of inline consts in the same context as the outer def, similar to what is currently done to closure.

Doing so would require `closure_base_def_id` of the inline const to return the outer def, and since `closure_base_def_id` can be called on non-local crate (and thus have no HIR available), a new `DefKind` is created for inline consts.

The type of the generated anon const can capture lifetime of outer def, so we couldn't just use the typeck result as the type of the inline const's def. Closure has a similar issue, and it uses extra type params `CK, CS, U` to capture closure kind, input/output signature and upvars. I use a similar approach for inline consts, letting it have an extra type param `R`, and then `typeof(InlineConst<[paremt generics], R>)` would just be `R`. In borrowck region requirements are also propagated to the outer MIR body just like it's currently done for closure.

With this PR, inline consts in expression position are quitely usable now; however the usage in pattern position is still incomplete -- since those does not remain in the MIR borrowck couldn't verify the lifetime there. I have left an ignored test as a FIXME.

Some disucssions can be found on [this Zulip thread](https://rust-lang.zulipchat.com/#narrow/stream/260443-project-const-generics/topic/inline.20consts.20typeck).
cc `````@spastorino````` `````@lcnr`````
r? `````@nikomatsakis`````

`````@rustbot````` label A-inference F-inline_const T-compiler
2021-11-09 19:00:40 +01:00
Michael Woerister
fefe1e9192 Record more artifact sizes during self-profiling. 2021-11-08 17:02:40 +01:00
bors
5fa94f3c57 Auto merge of #88368 - jyn514:metadata-error, r=petrochenkov
Improve error when an .rlib can't be parsed

This usually describes either an error in the compiler itself or some
sort of IO error. Either way, we should report it to the user rather
than just saying "crate not found".

This only gives an error if the crate couldn't be loaded at all - if the
compiler finds another .rlib or .rmeta file which was valid, it will
continue to compile the crate.

Example output:
```
error[E0785]: found invalid metadata files for crate `foo`
 --> bar.rs:3:24
  |
3 |         println!("{}", foo::FOO_11_49[0]);
  |                        ^^^
  |
  = warning: failed to parse rlib '/home/joshua/test-rustdoc/libfoo.rlib': Invalid archive extended name offset
```

cc `@ehuss`
2021-11-07 23:03:55 +00:00
bors
46b8e7488e Auto merge of #90668 - matthiaskrgr:clippy_nov7, r=jyn514
more clippy fixes
2021-11-07 20:04:54 +00:00
Matthias Krüger
5c454551da more clippy fixes 2021-11-07 16:59:05 +01:00
Joshua Nelson
257ac1b498 Improve error when an .rlib can't be parsed
This usually describes either an error in the compiler itself or some
sort of IO error. Either way, we should report it to the user rather
than just saying "crate not found".

This only gives an error if the crate couldn't be loaded at all - if the
compiler finds another .rlib or .rmeta file which was valid, it will
continue to compile the crate.

Example output:
```
error[E0785]: found invalid metadata files for crate `foo`
 --> bar.rs:3:24
  |
3 |         println!("{}", foo::FOO_11_49[0]);
  |                        ^^^
  |
  = warning: failed to parse rlib '/home/joshua/test-rustdoc/libfoo.rlib': Invalid archive extended name offset
```
2021-11-07 15:03:40 +00:00
Vadim Petrochenkov
2834f57c45 ast: Fix naming conventions in AST structures
TraitKind -> Trait
TyAliasKind -> TyAlias
ImplKind -> Impl
FnKind -> Fn

All `*Kind`s in AST are supposed to be enums.

Tuple structs are converted to braced structs for the types above, and fields are reordered in syntactic order.

Also, mutable AST visitor now correctly visit spans in defaultness, unsafety, impl polarity and constness.
2021-11-07 21:38:17 +08:00
Gary Guo
02c1774cd3 Give inline const separate DefKind 2021-11-07 03:59:06 +00:00
Eric Huss
9057936a9a Demote metadata load warning to "info". 2021-11-03 13:39:37 -07:00
Guillaume Gomez
1a1f525bb0
Rollup merge of #90202 - matthewjasper:xcrate-hygiene, r=petrochenkov
Improve and test cross-crate hygiene

- Decode the parent expansion for traits and enums in `rustc_resolve`, this was already being used for resolution in typeck
- Avoid suggesting importing names with def-site hygiene, since it's often not useful
- Add more tests

r? `@petrochenkov`
2021-10-30 20:30:27 +02:00
Michael Woerister
6771ac3f19 Update odht crate to 0.3.1 (big-endian bugfix) 2021-10-29 18:05:15 +02:00
Matthew Jasper
d8426ea636 Remove ModData from rustc_metadata
This avoids having to decode 2 `Lazy`s when decoding a modules exports.
2021-10-28 21:48:21 +01:00
Mark Rousskov
3215eeb99f
Revert "Add rustc lint, warning when iterating over hashmaps" 2021-10-28 11:01:42 -04:00
bjorn3
f5c3e83013 Avoid a branch on key being local for queries that use the same local and extern providers 2021-10-25 13:36:23 +02:00
Matthias Krüger
87822b27ee
Rollup merge of #89558 - lcnr:query-stable-lint, r=estebank
Add rustc lint, warning when iterating over hashmaps

r? rust-lang/wg-incr-comp
2021-10-24 15:48:42 +02:00
Matthew Jasper
4ecb49eba3 Handle cross-crate module ExpnIds consistently
- Always use the ExpnId serialized to `tables`
- Use the Id for traits and enums from other crates in resolution.
2021-10-21 22:07:03 +01:00
Eric Huss
6f915056a1 Don't emit a warning for empty rmeta files. 2021-10-19 16:56:47 -07:00
bors
1af55d19c7 Auto merge of #89933 - est31:let_else, r=michaelwoerister
Adopt let_else across the compiler

This performs a substitution of code following the pattern:

```
let <id> = if let <pat> = ... { identity } else { ... : ! };
```

To simplify it to:

```
let <pat> = ... { identity } else { ... : ! };
```

By adopting the `let_else` feature (cc #87335).

The PR also updates the syn crate because the currently used version of the crate doesn't support `let_else` syntax yet.

Note: Generally I'm the person who *removes* usages of unstable features from the compiler, not adds more usages of them, but in this instance I think it hopefully helps the feature get stabilized sooner and in a better state. I have written a [comment](https://github.com/rust-lang/rust/issues/87335#issuecomment-944846205) on the tracking issue about my experience and what I feel could be improved before stabilization of `let_else`.
2021-10-19 14:41:39 +00:00
bors
6f53ddfa74 Auto merge of #89514 - davidtwco:polymorphize-shims-and-predicates, r=lcnr
polymorphization: shims and predicates

Supersedes #75737 and #75414. This pull request includes up some changes to polymorphization which hadn't landed previously and gets stage2 bootstrapping and the test suite passing when polymorphization is enabled. There are still issues with `type_id` and polymorphization to investigate but this should get polymorphization in a reasonable state to work on.

- #75737 and #75414 both worked but were blocked on having the rest of the test suite pass (with polymorphization enabled) with and without the PRs. It makes more sense to just land these so that the changes are in.
- #75737's changes remove the restriction of `InstanceDef::Item` on polymorphization, so that shims can now be polymorphized. This won't have much of an effect until polymorphization's analysis is more advanced, but it doesn't hurt.
- #75414's changes remove all logic which marks parameters as used based on their presence in predicates - given #75675, this will enable more polymorphization and avoid the symbol clashes that predicate logic previously sidestepped.
- Polymorphization now explicitly checks (and skips) foreign items, this is necessary for stage2 bootstrapping to work when polymorphization is enabled.
- The conditional determining the emission of a note adding context to a post-monomorphization error has been modified. Polymorphization results in `optimized_mir` running for shims during collection where that wouldn't happen previously, some errors are emitted during `optimized_mir` and these were considered post-monomorphization errors with the existing logic (more errors and shims have a `DefId` coming from the std crate, not the local crate), adding a note that resulted in tests failing. It isn't particularly feasible to change where polymorphization runs or prevent it from using `optimized_mir`, so it seemed more reasonable to not change the conditional.
- `characteristic_def_id_of_type` was being invoked during partitioning for self types of impl blocks which had projections that depended on the value of unused generic parameters of a function - this caused a ICE in a debuginfo test. If partitioning is enabled and the instance needs substitution then this is skipped. That test still fails for me locally, but not with an ICE, but it fails in a fresh checkout too, so 🤷‍♂️.

r? `@lcnr`
2021-10-17 12:33:12 +00:00
est31
1418df5888 Adopt let_else across the compiler
This performs a substitution of code following the pattern:

let <id> = if let <pat> = ... { identity } else { ... : ! };

To simplify it to:

let <pat> = ... { identity } else { ... : ! };

By adopting the let_else feature.
2021-10-16 07:18:05 +02:00
lcnr
00e5abe9b6 allow potential_query_instability everywhere 2021-10-15 10:58:18 +02:00
Noah Lev
2e56b6f98e Include rmeta candidates in "multiple matching crates" error
Only dylib and rlib candidates were included in the error. I think the
reason is that at the time this error was originally implemented, rmeta
crate sources were represented different from dylib and rlib sources.
I wrote up more detailed analysis in [this comment][1].

The new version of the code is also a bit easier to read and should be
more robust to future changes since it uses `CrateSources::paths()`.

[1]: https://github.com/rust-lang/rust/pull/88675#issuecomment-935282436
2021-10-12 13:10:11 -07:00
Noah Lev
6792c6a851 Sort candidate libraries by source path in error
This makes the error output deterministic and thus testable.
2021-10-12 13:08:32 -07:00
Guillaume Gomez
836597a881
Rollup merge of #89649 - matthiaskrgr:clippycompl, r=jyn514
clippy::complexity fixes
2021-10-08 22:30:40 +02:00
Matthias Krüger
e6f77a1787 clippy::complexity fixes 2021-10-08 20:07:44 +02:00
Jubilee
aed1801841
Rollup merge of #89476 - cjgillot:expn-id, r=petrochenkov
Correct decoding of foreign expansions during incr. comp.

Fixes https://github.com/rust-lang/rust/issues/74946

The original issue was due to a wrong assertion in `expn_hash_to_expn_id`.

The secondary issue was due to a mismatch between the encoding and decoding paths for expansions that are created after the TyCtxt is created.
2021-10-07 20:26:14 -07:00
Jubilee
6c17601a2e
Rollup merge of #89025 - ricobbe:raw-dylib-link-ordinal, r=michaelwoerister
Implement `#[link_ordinal(n)]`

Allows the use of `#[link_ordinal(n)]` with `#[link(kind = "raw-dylib")]`, allowing Rust to link against DLLs that export symbols by ordinal rather than by name.  As long as the ordinal matches, the name of the function in Rust is not required to match the name of the corresponding function in the exporting DLL.

Part of #58713.
2021-10-07 20:26:11 -07:00
Camille GILLOT
4028b093e4 Do not ICE if some foreign expansions were not encoded.
The metadata encoder does not necessarily encode all expansions, only
those which are referenced in other metadata fields.
2021-10-06 19:10:08 +02:00
Camille GILLOT
ce21756ed3 Access Session while decoding expn_id. 2021-10-06 19:06:20 +02:00
Cameron Steffen
33b9b95305 Introduce get_diagnostic_name 2021-10-06 08:40:28 -05:00
Manish Goregaokar
5f8b1614d1
Rollup merge of #89546 - joshtriplett:grow-metadata-faster, r=petrochenkov
Make an initial guess for metadata size to reduce buffer resizes

When reading metadata, the compiler starts with a `Vec::new()`, which will need to grow repeatedly as the metadata gets decompressed into it. Reduce the number of resizes by starting out at the size of the compressed data.
2021-10-05 12:52:49 -07:00
bors
55111d656f Auto merge of #89266 - cjgillot:session-ich, r=michaelwoerister
Move ICH to rustc_query_system

Based on https://github.com/rust-lang/rust/pull/89183

The StableHashingContext does not need to be in rustc_middle.

This PR moves it to rustc_query_system. This will avoid a dependency between rustc_ast_lowering and rustc_middle in https://github.com/rust-lang/rust/pull/89124.
2021-10-05 09:45:11 +00:00
Josh Triplett
c35a700be2 Make an initial guess for metadata size to reduce buffer resizes 2021-10-04 19:23:13 -07:00
Jubilee
5352e17df3
Rollup merge of #89483 - hkmatsumoto:patch-diagnostics-2, r=estebank
Practice diagnostic message convention

Detected by #89455.

r? ```@estebank```
2021-10-04 13:58:15 -07:00
Jubilee
9381d7a898
Rollup merge of #89407 - pierwill:recommend-clean-E0514, r=davidtwco
Recommend running `cargo clean` in E0514 output

This suggestion has worked for me before. Seems to me it could help others.
2021-10-04 13:58:10 -07:00
Camille GILLOT
8961616e60 Move rustc_middle::middle::cstore to rustc_session. 2021-10-03 16:08:51 +02:00
Hirochika Matsumoto
3818981ca1 Practice diagnostic message convention 2021-10-03 16:16:28 +09:00
bors
c02371c442 Auto merge of #88880 - cjgillot:no-krate, r=oli-obk
Rework HIR API to make invocations of the hir_crate query harder.

`hir_crate` forces the recomputation of queries that depend on it.

This PR aims at avoiding useless invocations of `hir_crate` by making dependent code go through `tcx.hir()`.
2021-10-01 20:06:34 +00:00
David Wood
76b05531ca polymorphize: polymorphize shims
This commit removes the restriction of `InstanceDef::Item` on
polymorphization, so that shims can now be polymorphized.

Signed-off-by: David Wood <david.wood@huawei.com>
2021-10-01 17:08:06 +00:00
pierwill
7ed75ce97c Recommend running cargo clean in E0514 output 2021-09-30 12:52:51 -05:00
Camille GILLOT
b244b98e7c Move EncodedMetadata to rustc_metadata. 2021-09-30 19:41:32 +02:00
Camille GILLOT
df54d3980b Move encode_metadata out of CrateStore. 2021-09-30 19:41:31 +02:00
Camille GILLOT
db9fea508a Avoid more invocations of hir_crate query. 2021-09-29 23:16:47 +02:00
bors
bf642323d6 Auto merge of #89016 - lcnr:non_blanket_impls, r=nikomatsakis,michaelwoerister
fix non_blanket_impls iteration order

We sometimes iterate over all `non_blanket_impls`, not sure if this is observable outside
of error messages (i.e. as incremental bugs). This should fix the underlying issue of #86986.

second attempt of #88718

r? `@nikomatsakis`
2021-09-23 15:44:53 +00:00
bors
ac2d9fc509 Auto merge of #89103 - Mark-Simulacrum:migrate-2021, r=estebank
Migrate in-tree crates to 2021

This replaces #89075 (cherry picking some of the commits from there), and closes #88637 and fixes #89074.

It excludes a migration of the library crates for now (see tidy diff) because we have some pending bugs around macro spans to fix there.

I instrumented bootstrap during the migration to make sure all crates moved from 2018 to 2021 had the compatibility warnings applied first.

Originally, the intent was to support cargo fix --edition within bootstrap, but this proved fairly difficult to pull off. We'd need to architect the check functionality to support running cargo check and cargo fix within the same x.py invocation, and only resetting sysroots on check. Further, it was found that cargo fix doesn't behave too well with "not quite workspaces", such as Clippy which has several crates. Bootstrap runs with --manifest-path ... for all the tools, and this makes cargo fix only attempt migration for that crate. We can't use e.g. --workspace due to needing to maintain sysroots for different phases of compilation appropriately.

It is recommended to skip the mass migration of Cargo.toml's to 2021 for review purposes; you can also use `git diff d6cd2c6c87 -I'^edition = .20...$'` to ignore the edition = 2018/21 lines in the diff.
2021-09-21 19:25:49 +00:00
bors
49c0861ed0 Auto merge of #87234 - cjgillot:lower-mono, r=petrochenkov
Lower only one HIR owner at a time

Based on https://github.com/rust-lang/rust/pull/83723
Additional diff is here: https://github.com/cjgillot/rust/compare/ownernode...lower-mono

Lowering is very tangled and has a tendency to intertwine the transformation of different items. This PR aims at simplifying the logic by:
- moving global analyses to the resolver (item_generics_num_lifetimes, proc_macros, trait_impls);
- removing a few special cases (non-exported macros and use statements);
- restricting the amount of available information at any one time;
- avoiding back-and-forth between different owners: an item must now be lowered all at once, and its parent cannot refer to its nodes.

I also removed the sorting of bodies by span.  The diagnostic ordering changes marginally, since definitions are pretty much sorted already according to the AST. This uncovered a subtlety in thir-unsafeck.

(While these items could logically be in different PRs, the dependency between commits and the amount of conflicts force a monolithic PR.)
2021-09-21 07:52:15 +00:00
lcnr
01bcddbdc4 crates is already deterministic 2021-09-21 08:24:23 +02:00
Mark Rousskov
3b89679671 Adjust documentation for compatibility with 2021
This also adjusts the lint docs generation to accept (and ignore) an allow
attribute, rather than expecting the documentation to be immediately followed by
the lint name.
2021-09-20 22:21:43 -04:00
Mark Rousskov
c746be2219 Migrate to 2021 2021-09-20 22:21:42 -04:00
Richard Cobbe
142f6c0b07 Implement #[link_ordinal] attribute in the context of #[link(kind = "raw-dylib")]. 2021-09-20 14:50:35 -07:00
Michael Woerister
543a73d678 Update odht crate to 0.3.0
This version of odht contains a potential fix for #89085.
2021-09-20 15:57:45 +02:00
Camille GILLOT
d7795d302a Do not store visibility in *ItemRef. 2021-09-20 00:29:53 +02:00
Michael Woerister
4d151d92de Update odht to 0.2.1 2021-09-17 15:57:57 +02:00
Michael Woerister
919497cc30 rustc_metadata: Remove Metadata::raw_bytes() and use Metadata::blob() directly instead. 2021-09-14 13:56:33 +02:00
Michael Woerister
5f73085f92 Rename DefPathHashMap in rustc_metadata so its name does not clash with DefPathHashMap in rustc_hir. 2021-09-14 13:56:33 +02:00
Michael Woerister
2b60338ee9 Make DefPathHash->DefId panic for if the mapping fails.
We only use this mapping for cases where we know that it must succeed.
Letting it panic otherwise makes it harder to use the API in unsupported
ways.
2021-09-14 13:56:33 +02:00
Michael Woerister
960893c50a Store DefPathHash->DefIndex map in on-disk-hash-table format in crate metadata.
This encoding allows for random access without an expensive upfront decoding
state which in turn allows simplifying the DefPathIndex lookup logic without
regressing performance.
2021-09-14 13:56:33 +02:00
Michael Woerister
d0be27c8ec Use on-disk-hash-table format for DefPathHashMap in hir::definitions. 2021-09-14 13:54:41 +02:00
Michael Woerister
0debea1377 Allow taking an OwningRef of the crate metadata blob. 2021-09-14 13:53:55 +02:00
bors
51e514c0fb Auto merge of #88759 - Amanieu:panic_in_drop, r=nagisa,eddyb
Add -Z panic-in-drop={unwind,abort} command-line option

This PR changes `Drop` to abort if an unwinding panic attempts to escape it, making the process abort instead. This has several benefits:
- The current behavior when unwinding out of `Drop` is very unintuitive and easy to miss: unwinding continues, but the remaining drops in scope are simply leaked.
- A lot of unsafe code doesn't expect drops to unwind, which can lead to unsoundness:
  - https://github.com/servo/rust-smallvec/issues/14
  - https://github.com/bluss/arrayvec/issues/3
- There is a code size and compilation time cost to this: LLVM needs to generate extra landing pads out of all calls in a drop implementation. This can compound when functions are inlined since unwinding will then continue on to process drops in the callee, which can itself unwind, etc.
  - Initial measurements show a 3% size reduction and up to 10% compilation time reduction on some crates (`syn`).

One thing to note about `-Z panic-in-drop=abort` is that *all* crates must be built with this option for it to be sound since it makes the compiler assume that dropping `Box<dyn Any>` will never unwind.

cc https://github.com/rust-lang/lang-team/issues/97
2021-09-12 20:48:09 +00:00
Manish Goregaokar
f5ac5cadd3
Rollup merge of #88709 - BoxyUwU:thir-abstract-const, r=lcnr
generic_const_exprs: use thir for abstract consts instead of mir

Changes `AbstractConst` building to use `thir` instead of `mir` so that there's less chance of consts unifying when they shouldn't because lowering to mir dropped information (see `abstract-consts-as-cast-5.rs` test)

r? `@lcnr`
2021-09-12 03:44:56 -07:00
Manish Goregaokar
bb5ca58d29
Rollup merge of #88677 - petrochenkov:exportid, r=davidtwco
rustc: Remove local variable IDs from `Export`s

Local variables can never be exported.
2021-09-12 03:44:53 -07:00
bors
547d9374d2 Auto merge of #84373 - cjgillot:resolve-span, r=michaelwoerister,petrochenkov
Encode spans relative to the enclosing item

The aim of this PR is to avoid recomputing queries when code is moved without modification.

MCP at https://github.com/rust-lang/compiler-team/issues/443

This is achieved by :
1. storing the HIR owner LocalDefId information inside the span;
2. encoding and decoding spans relative to the enclosing item in the incremental on-disk cache;
3. marking a dependency to the `source_span(LocalDefId)` query when we translate a span from the short (`Span`) representation to its explicit (`SpanData`) representation.

Since all client code uses `Span`, step 3 ensures that all manipulations
of span byte positions actually create the dependency edge between
the caller and the `source_span(LocalDefId)`.
This query return the actual absolute span of the parent item.
As a consequence, any source code motion that changes the absolute byte position of a node will either:
- modify the distance to the parent's beginning, so change the relative span's hash;
- dirty `source_span`, and trigger the incremental recomputation of all code that
  depends on the span's absolute byte position.

With this scheme, I believe the dependency tracking to be accurate.

For the moment, the spans are marked during lowering.
I'd rather do this during def-collection,
but the AST MutVisitor is not practical enough just yet.
The only difference is that we attach macro-expanded spans
to their expansion point instead of the macro itself.
2021-09-11 23:35:28 +00:00
Amanieu d'Antras
a149bed3bd Ensure that crates are linked with compatible panic-in-drop settings 2021-09-11 16:13:30 +01:00
Vadim Petrochenkov
294510e1bb rustc: Remove local variable IDs from Exports
Local variables can never be exported.
2021-09-10 23:41:48 +03:00
Guillaume Gomez
c9a56cdc58 Add help for E0463 2021-09-10 21:36:09 +02:00
Camille GILLOT
00485e0c0e Keep a parent LocalDefId in SpanData. 2021-09-10 20:17:33 +02:00
Ellen
8295e4a6cf add test for builtin types N + N unifying with fn call 2021-09-09 15:44:04 +01:00
Ellen
406d2ab95d rename mir -> thir around abstract consts 2021-09-09 01:32:03 +01:00
bors
d295e36c38 Auto merge of #88538 - bjorn3:no_session_in_crate_loader, r=petrochenkov
CrateLocator refactorings

This makes the `CrateLocator` a lot cleaner IMHO and much more self-contained. The last commit removes `extra_filename` from the crate metadata. This is an **insta-stable** change as it allows a crate like `libfoo-abc.rlib` to be used as dependency and then be renamed as `libfoo-bcd.rlib` while still being found as indirect dependency. This may reduce performance when there are a lot of versions of the same crate available as the extra filename won't be used to do an early rejection of crates before trying to load metadata, but it makes the logic to find the right filename a lot cleaner.
2021-09-04 07:17:12 +00:00
bjorn3
ff98cb6408 Remove unused argument from resolve_crate 2021-09-02 12:25:27 +02:00
bjorn3
f59198ab96 Introduce CrateRejections struct 2021-09-02 12:25:27 +02:00
bjorn3
b3f850a50c Remove root field from CrateLocator 2021-09-02 12:25:26 +02:00
bjorn3
3a8c457916 Remove host_hash from CrateLocator 2021-09-02 12:25:26 +02:00
bjorn3
a3ada4e68a Refactor CrateLocator.is_proc_macro
This also fixes a (theoretical) bug where a proc-macro may be loaded as
plugin if it exports a symbol with the right name.
2021-09-02 12:25:26 +02:00
bjorn3
4f35f66796 Don't store Session in CrateLocator 2021-09-02 12:25:26 +02:00
Camille GILLOT
f8efe5d822 Compute proc_macros in resolutions. 2021-09-01 20:13:16 +02:00
inquisitivecrystal
8c62fa0575 Treat macros as HIR items 2021-08-28 00:16:34 -07:00
bors
958d788a0b Auto merge of #85344 - cbeuw:remap-across-cwd, r=michaelwoerister
Correctly handle remapping from path containing the current directory with trailing paths

If we have a `auxiliary/lib.rs`, and we generate the metadata with `--remap-path-prefix $PWD/auxiliary=xyz`, the path to `$PWD/auxiliary/lib.rs` won't be correctly remapped in the metadata. This is because internally, path to the working directory itself and relative paths to files under the working directory are remapped separately (hence neither are affected since neither has `$PWD/auxiliary` as prefix), but the concatenation between the working directory and the relative path is not remapped. This PR fixes that.
2021-08-25 10:58:43 +00:00
bors
f66e825f73 Auto merge of #87739 - Aaron1011:remove-used-attrs, r=wesleywiser
Remove `Session.used_attrs` and move logic to `CheckAttrVisitor`

Instead of updating global state to mark attributes as used,
we now explicitly emit a warning when an attribute is used in
an unsupported position. As a side effect, we are to emit more
detailed warning messages (instead of just a generic "unused" message).

`Session.check_name` is removed, since its only purpose was to mark
the attribute as used. All of the callers are modified to use
`Attribute.has_name`

Additionally, `AttributeType::AssumedUsed` is removed - an 'assumed
used' attribute is implemented by simply not performing any checks
in `CheckAttrVisitor` for a particular attribute.

We no longer emit unused attribute warnings for the `#[rustc_dummy]`
attribute - it's an internal attribute used for tests, so it doesn't
mark sense to treat it as 'unused'.

With this commit, a large source of global untracked state is removed.
2021-08-24 03:58:22 +00:00
Frank Steffahn
2f9ddf3bc7 Fix typos “an”→“a” and a few different ones that appeared in the same search 2021-08-22 18:15:49 +02:00
Frank Steffahn
b08b92eb42 Revert a change of “an --extern” (can be read with “dash dash”) 2021-08-22 16:37:47 +02:00
Frank Steffahn
bf88b113ea Fix typos “a”→“an” 2021-08-22 15:35:11 +02:00
Aaron Hill
af46699f81
Remove Session.used_attrs and move logic to CheckAttrVisitor
Instead of updating global state to mark attributes as used,
we now explicitly emit a warning when an attribute is used in
an unsupported position. As a side effect, we are to emit more
detailed warning messages (instead of just a generic "unused" message).

`Session.check_name` is removed, since its only purpose was to mark
the attribute as used. All of the callers are modified to use
`Attribute.has_name`

Additionally, `AttributeType::AssumedUsed` is removed - an 'assumed
used' attribute is implemented by simply not performing any checks
in `CheckAttrVisitor` for a particular attribute.

We no longer emit unused attribute warnings for the `#[rustc_dummy]`
attribute - it's an internal attribute used for tests, so it doesn't
mark sense to treat it as 'unused'.

With this commit, a large source of global untracked state is removed.
2021-08-21 13:27:27 -05:00
Aaron Hill
a895069c50
Include (potentially remapped) working dir in crate hash
Fixes #85019

A `SourceFile` created during compilation may have a relative
path (e.g. if rustc itself is invoked with a relative path).
When we write out crate metadata, we convert all relative paths
to absolute paths using the current working direction.

However, the working directory is not included in the crate hash.
This means that the crate metadata can change while the crate
hash remains the same. Among other problems, this can cause a
fingerprint mismatch ICE, since incremental compilation uses
the crate metadata hash to determine if a foreign query is green.

This commit moves the field holding the working directory from
`Session` to `Options`, including it as part of the crate hash.
2021-08-15 15:17:37 -05:00
bors
eb2226b1f1 Auto merge of #85296 - bjorn3:plugin_cleanup, r=petrochenkov
Plugin interface cleanup

The first commit performs two uncontroversial cleanups. The second commit removes `#[plugin_registrar]` and instead requires you to export a `__rustc_plugin_registrar` function, this will require a change to servo's script_plugins (cc `@jdm)`
2021-08-12 04:30:41 +00:00
bjorn3
a501308ec1 Replace #[plugin_registrar] with exporting __rustc_plugin_registrar 2021-08-10 14:20:48 +02:00
bors
7b52ad00cb Auto merge of #87619 - 12101111:fix-native_link_modifiers_bundle, r=petrochenkov
Fix feature gate checking of static-nobundle and native_link_modifiers

Feature native_link_modifiers_bundle don't need feature static-nobundle
to work.

Also check the feature gates when using native_link_modifiers from command line options. Current nighly compiler don't check those feature gate.

```
> touch lib.rs
> rustc +nightly lib.rs -L /usr/lib -l static:+bundle=dl --crate-type=rlib
> rustc +nightly lib.rs -L /usr/lib -l dylib:+as-needed=dl --crate-type=dylib -Ctarget-feature=-crt-static
> rustc +nightly lib.rs -L /usr/lib -l static:-bundle=dl --crate-type=rlib
error[E0658]: kind="static-nobundle" is unstable
  |
  = note: see issue #37403 <https://github.com/rust-lang/rust/issues/37403> for more information
  = help: add `#![feature(static_nobundle)]` to the crate attributes to enable

error: aborting due to previous error

For more information about this error, try `rustc --explain E0658`.

```

First found this in https://github.com/rust-lang/rust/pull/85600#discussion_r676612655
2021-08-09 03:59:30 +00:00
12101111
d935a14f4c
Fix feature gate checking of static-nobundle and native_link_modifiers 2021-08-08 21:46:40 +08:00
Ellen
2c004a2287 encode generics_of of fields and ty params 2021-08-06 14:20:59 +01:00
Amanieu d'Antras
1247f9b829 Add back -Zno-profiler-runtime
This was removed by #85284 in favor of -Zprofiler-runtime=<name>.
However the suggested -Zprofiler-runtime=None doesn't work because
"None" is treated as a crate name.
2021-08-04 10:47:59 +01:00
Jade
3cf820e17d rfc3052: Remove authors field from Cargo manifests
Since RFC 3052 soft deprecated the authors field anyway, hiding it from
crates.io, docs.rs, and making Cargo not add it by default, and it is
not generally up to date/useful information, we should remove it from
crates in this repo.
2021-07-29 14:56:05 -07:00
bors
6489ee1041 Auto merge of #83723 - cjgillot:ownernode, r=petrochenkov
Store all HIR owners in the same container

This replaces the previous storage in a BTreeMap for each of Item/ImplItem/TraitItem/ForeignItem.
This should allow for a more compact storage.

Based on https://github.com/rust-lang/rust/pull/83114
2021-07-25 11:11:02 +00:00
Camille GILLOT
fee421685d Introduce OwnerNode::Crate. 2021-07-25 12:22:47 +02:00
Camille GILLOT
36a28060f1 Merge the BTreeMap in hir::Crate. 2021-07-25 12:18:56 +02:00
Joshua Nelson
17f7536fb2 Remove detection of rustup and cargo in 'missing extern crate' diagnostics
Previously, this would change the test output when RUSTUP_HOME was set:

```
---- [ui] ui/issues/issue-49851/compiler-builtins-error.rs stdout ----
diff of stderr:

1       error[E0463]: can't find crate for `core`
2          |
3          = note: the `thumbv7em-none-eabihf` target may not be installed
+          = help: consider downloading the target with `rustup target add thumbv7em-none-eabihf`
4
5       error: aborting due to previous error
6
```

Originally, I fixed it by explicitly unsetting RUSTUP_HOME in
compiletest. Then I realized that almost no one has RUSTUP_HOME set,
since rustup doesn't set it itself; although it does set RUST_RECURSION_COUNT
whenever it launches a proxy. Then it was pointed out that this runtime
check doesn't really make sense and it's fine to make it unconditional.
2021-07-24 01:29:42 +00:00
bors
18073052d8 Auto merge of #86698 - cjgillot:modc, r=estebank
Move OnDiskCache to rustc_query_impl.

This should be the last remnant of the query implementation that was still in rustc_middle.
2021-07-18 10:42:23 +00:00
Camille GILLOT
81241cbf3a Move OnDiskCache to rustc_query_impl. 2021-07-18 11:14:07 +02:00
Yuki Okushi
81d0b70402
Rollup merge of #87092 - ricobbe:fix-raw-dylib-multiple-definitions, r=petrochenkov
Remove nondeterminism in multiple-definitions test

Compare all fields in `DllImport` when sorting to avoid nondeterminism in the error for multiple inconsistent definitions of an extern function.  Restore the multiple-definitions test.

Resolves #87084.
2021-07-18 14:21:56 +09:00
Camille GILLOT
41c1f39fa8 Drop ExpnData::krate. 2021-07-17 19:41:10 +02:00
Camille GILLOT
dbd2d77641 Drop orig_id. 2021-07-17 19:41:09 +02:00
Camille GILLOT
37a13def48 Encode ExpnId using ExpnHash for incr. comp. 2021-07-17 19:41:08 +02:00
Camille GILLOT
2fe37c5bd1 Choose encoding format in caller code. 2021-07-17 19:41:07 +02:00
Camille GILLOT
6e78d6c9d6 Make the CrateNum part of the ExpnId. 2021-07-17 19:35:33 +02:00
Richard Cobbe
ce59f1aac5 Consider all fields when comparing DllImports, to remove nondetermininsm in multiple-definitions test 2021-07-16 11:10:31 -07:00
Camille GILLOT
c2d43e1329 Simplify metadata decoding. 2021-07-15 19:31:47 +02:00
Camille GILLOT
47ea2ae933 Separate encoding paths.
The two paths will be modified independently in the next few commits.
2021-07-15 19:31:46 +02:00
bors
b9197978a9 Auto merge of #86876 - jyn514:56935-target-crate-num, r=petrochenkov
Reuse CrateNum for proc-macro crates even when cross-compiling

Proc-macros are always compiled for the host, so this should be the same
in every way as recompiling the crate.

I am not sure why the previous code special-cased the target, since the
compiler properly gives an error when trying to load a crate for a
different host:

```
error[E0461]: couldn't find crate `dependency` with expected target triple x86_64-unknown-linux-gnu
  --> /home/joshua/rustc4/src/test/ui/cfg-dependent.rs:8:2
   |
LL |     dependency::is_64();
   |     ^^^^^^^^^^
   |
   = note: the following crate versions were found:
           crate `dependency`, target triple i686-unknown-linux-gnu: /home/joshua/rustc4/build/x86_64-unknown-linux-gnu/test/ui/cfg-dependent/auxiliary/libdependency.so
```

I think another possible fix is to remove the check altogether. But I'm
not sure, and this fix works, so I'm not making the larger change here.

Fixes https://github.com/rust-lang/rust/issues/56935.

r? `@petrochenkov` cc `@alexcrichton`
2021-07-15 02:39:38 +00:00
Joshua Nelson
68b959827b Reuse CrateNum for proc-macro crates even when cross-compiling
Proc-macros are always compiled for the host, so this should be the same
in every way as recompiling the crate.

I am not sure why the previous code special-cased the target, since the
compiler properly gives an error when trying to load a crate for a
different host:

```
error[E0461]: couldn't find crate `dependency` with expected target triple x86_64-unknown-linux-gnu
  --> /home/joshua/rustc4/src/test/ui/cfg-dependent.rs:8:2
   |
LL |     dependency::is_64();
   |     ^^^^^^^^^^
   |
   = note: the following crate versions were found:
           crate `dependency`, target triple i686-unknown-linux-gnu: /home/joshua/rustc4/build/x86_64-unknown-linux-gnu/test/ui/cfg-dependent/auxiliary/libdependency.so
```

I think another possible fix is to remove the check altogether. But I'm
not sure, and this fix works, so I'm not making the larger change here.
2021-07-14 20:36:35 -04:00
Camille GILLOT
3fba5a4844 Shrink the CrateStore dynamic interface. 2021-07-14 16:37:56 +02:00
bors
c7d6bcc788 Auto merge of #87044 - cjgillot:expnhash, r=petrochenkov
Cache expansion hash globally

... instead of computing it multiple times.

Split from #86676
r? `@petrochenkov`
2021-07-13 22:32:58 +00:00
Camille GILLOT
616ce3c5c0 Cache expansion hash. 2021-07-13 23:10:56 +02:00
bors
394804bb23 Auto merge of #86857 - fee1-dead:add-attr, r=oli-obk
Add #[default_method_body_is_const]

`@rustbot` label F-const_trait_impl
2021-07-13 06:59:34 +00:00
bors
72568552fd Auto merge of #85941 - cjgillot:qresolve, r=Aaron1011
Reduce the amount of untracked state in TyCtxt -- Take 2

Main part of #85153

The offending line (https://github.com/rust-lang/rust/pull/85153#discussion_r642866298) is replaced by a FIXME until the possible bug and the perf concern are both resolved.

r? `@Aaron1011`
2021-07-11 16:09:17 +00:00
Vadim Petrochenkov
de897f5205 rustc_expand: Remove redundant field from proc macro expander structures
This information is already available from `ExpnData`
2021-07-10 23:22:27 +03:00