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4088 Commits

Author SHA1 Message Date
Dylan DPC
a9005b6cc0
Rollup merge of #105864 - matthiaskrgr:compl, r=Nilstrieb 
clippy::complexity fixes

filter_next
needless_question_mark
bind_instead_of_map
manual_find
derivable_impls
map_identity
redundant_slicing
skip_while_next
unnecessary_unwrap
needless_bool

r? `@compiler-errors`
 2022-12-19 14:41:35 +05:30
Matthias Krüger
1da4a49912 clippy::complexity fixes 
filter_next
needless_question_mark
bind_instead_of_map
manual_find
derivable_impls
map_identity
redundant_slicing
skip_while_next
unnecessary_unwrap
needless_bool
 2022-12-19 00:04:28 +01:00
Matthias Krüger
ebe3563764
Rollup merge of #105873 - matthiaskrgr:clippy_fmt, r=Nilstrieb 
use &str / String literals instead of format!()
 2022-12-18 23:03:07 +01:00
Matthias Krüger
22379779b5
Rollup merge of #105875 - matthiaskrgr:needless_borrowed_reference, r=oli-obk 
don't destuct references just to reborrow
 2022-12-18 18:57:05 +01:00
Matthias Krüger
a108d55ce6 don't restuct references just to reborrow 2022-12-18 17:04:32 +01:00
Matthias Krüger
0aa4cde747 avoid .into() conversion to identical types 2022-12-18 16:20:32 +01:00
Matthias Krüger
3af7df91fc use &str / String literals instead of format!() 2022-12-18 16:17:46 +01:00
Matthias Krüger
9b6605dcc4
Rollup merge of #105770 - oli-obk:deref_all_the_things, r=compiler-errors 
Rename ConstS to ConstData

just a style nit to get it in sync with all the other interned datastructures
 2022-12-17 09:25:53 +01:00
Matthias Krüger
505848a935
Rollup merge of #105493 - WaffleLapkin:unchoke-r-a, r=Nilstrieb 
Help rust-analyzer normalize query return types

See [zulip thread](https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frust-analyzer/topic/rustc.20query.20types.20are.20not.20normalized.20since.20recently/near/312686086), since https://github.com/rust-lang/rust/pull/103808, rust analyzer doesn't normalize return types of queries. This is because r-a doesn't support associated type defaults (yet).

The easiest fix is to not use associated type defaults (duh), which this PR does.

r? `@cjgillot`
 2022-12-17 00:45:50 +01:00
Maybe Waffle
452c745518 Add a comment warning against using associated type defaults <3 2022-12-16 15:10:48 +00:00
bors
03770f0e2b Auto merge of #103880 - b-naber:field-ty-mir, r=lcnr 
Use non-ascribed type as field's type in mir

Fixes https://github.com/rust-lang/rust/issues/96514

r? `@lcnr`
 2022-12-16 12:47:49 +00:00
Oli Scherer
b170669917 Make a field only as public as it needs to be 2022-12-16 10:09:23 +00:00
Oli Scherer
02cbc017d7 Rename ConstS to ConstData 2022-12-16 10:02:51 +00:00
bors
a803f313fd Auto merge of #105717 - compiler-errors:anonymize, r=jackh726 
always use `anonymize_bound_vars`

Unless this is perf-sensitive, it's probably best to always use one anonymize function that does the right thing for all bound vars.

r? types
 2022-12-16 06:45:08 +00:00
bors
7a6af2711b Auto merge of #105760 - matthiaskrgr:rollup-r8beo9w, r=matthiaskrgr 
Rollup of 8 pull requests

Successful merges:

 - #105481 (Start improving monomorphization items stats)
 - #105674 (Point at method chains on `E0271` errors)
 - #105679 (Suggest constraining type parameter with `Clone`)
 - #105694 (Don't create dummy if val has escaping bounds var)
 - #105727 (Tweak output for bare `dyn Trait` in arguments)
 - #105739 (Migrate Jump to def links background to CSS variable)
 - #105743 (`SimplifiedType` cleanups)
 - #105758 (Move `TypeckResults` to separate module)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
 2022-12-15 22:53:03 +00:00
Matthias Krüger
2e03ff1b35
Rollup merge of #105758 - Nilstrieb:typeck-results-mod, r=compiler-errors 
Move `TypeckResults` to separate module

`ty::context` is really big and the typeck results aren't directly related to `TyCtxt`, so move them to a separate module. Also contains a small drive-by macro "improvement".
 2022-12-15 22:03:01 +01:00
Matthias Krüger
0f90ea9a61
Rollup merge of #105743 - nnethercote:SimplifiedType-cleanups, r=lcnr 
`SimplifiedType` cleanups

r? `@lcnr`
 2022-12-15 22:03:01 +01:00
Matthias Krüger
622f56065e
Rollup merge of #105674 - estebank:iterator-chains, r=oli-obk 
Point at method chains on `E0271` errors

Follow up to #105332. Fix #33941. CC #9082.

r? `@oli-obk`
 2022-12-15 22:02:58 +01:00
Matthias Krüger
863d1f653a
Rollup merge of #105481 - lqd:mono-stats, r=wesleywiser 
Start improving monomorphization items stats

As described in [this zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/247081-t-compiler.2Fperformance/topic/Compile-time.20case-study.3A.20AWS.20crates/near/314560832), some stats about monomorphization collection would be interesting to have, in a different form than `-Zprint-mono-items`: to have some visibility into the cost of the mono items, we'd like to know how many are instantiated and what is their estimated size.

That can be a proxy to analyze sources of slow compile times, although in the future, we'd also like to add more realistic stats from the actual backend's lowering.

This PR adds a new `-Z dump-mono-stats` flag which will output some stats in a `{crate_name}.mono-items.md` file (the flag optionally takes an output directory parameter, for easier use within a workspace than printing to stdout).

For example,

```rust
fn compute<T>(collection: Vec<T>) -> usize {
    collection.len() + 19 - 0 * 9 - 18 - 1 * 1 // random code to increase the function's size
}

fn main() {
    dbg!(compute(vec![0u8, 1, 2]));
    dbg!(compute(vec![0u64, 1, 2]));
    dbg!(compute(vec!["0", "1", "2", "3"]));
}
```

will output a file with this markdown table (abridged for readability), for a debug build:

| Item | Instantiation count | Estimated Cost Per Instantiation | Total Estimated Cost |
| --- | ---: | ---: | ---: |
| alloc::alloc::box_free | 3 | 122 | 366 |
| std::alloc::Global::alloc_impl | 1 | 284 | 284 |
| alloc::raw_vec::RawVec::<T, A>::current_memory | 3 | 82 | 246 |
| std::ptr::align_offset | 1 | 222 | 222 |
| std::slice::hack::into_vec | 3 | 67 | 201 |
| <std::vec::Vec<T, A> as std::ops::Drop>::drop | 3 | 66 | 198 |
| std::ptr::mut_ptr::<impl *mut T>::is_null | 4 | 47 | 188 |
| main | 1 | 163 | 163 |
| std::ptr::NonNull::<T>::new_unchecked | 4 | 37 | 148 |
...

<details>
<summary>Click for full output</summary>

| Item | Instantiation count | Estimated Cost Per Instantiation | Total Estimated Cost |
| --- | ---: | ---: | ---: |
| alloc::alloc::box_free | 3 | 122 | 366 |
| std::alloc::Global::alloc_impl | 1 | 284 | 284 |
| alloc::raw_vec::RawVec::<T, A>::current_memory | 3 | 82 | 246 |
| std::ptr::align_offset | 1 | 222 | 222 |
| std::slice::hack::into_vec | 3 | 67 | 201 |
| <std::vec::Vec<T, A> as std::ops::Drop>::drop | 3 | 66 | 198 |
| std::ptr::mut_ptr::<impl *mut T>::is_null | 4 | 47 | 188 |
| main | 1 | 163 | 163 |
| std::ptr::NonNull::<T>::new_unchecked | 4 | 37 | 148 |
| std::boxed::Box::<T, A>::into_unique | 3 | 48 | 144 |
| std::boxed::Box::<T, A>::leak | 3 | 39 | 117 |
| std::alloc::Layout::array::inner | 1 | 107 | 107 |
| std::ptr::align_offset::mod_inv | 1 | 103 | 103 |
| std::boxed::Box::<T, A>::into_raw_with_allocator | 3 | 31 | 93 |
| std::fmt::Arguments::<'a>::new_v1 | 1 | 80 | 80 |
| <alloc::raw_vec::RawVec<T, A> as std::ops::Drop>::drop | 3 | 26 | 78 |
| alloc::raw_vec::RawVec::<T, A>::from_raw_parts_in | 3 | 26 | 78 |
| alloc::alloc::exchange_malloc | 1 | 75 | 75 |
| std::ptr::const_ptr::<impl *const T>::is_null | 1 | 75 | 75 |
| std::ptr::const_ptr::<impl *const T>::is_aligned_to | 1 | 64 | 64 |
| compute | 3 | 20 | 60 |
| std::ptr::const_ptr::<impl *const T>::align_offset | 1 | 55 | 55 |
| std::ptr::read | 1 | 52 | 52 |
| <std::alloc::Global as std::alloc::Allocator>::deallocate | 1 | 50 | 50 |
| std::ptr::mut_ptr::<impl *mut T>::guaranteed_eq | 1 | 48 | 48 |
| std::fmt::ArgumentV1::<'a>::new_display | 2 | 22 | 44 |
| std::ptr::Alignment::new_unchecked | 1 | 42 | 42 |
| core::fmt::num::<impl std::fmt::Debug for usize>::fmt | 1 | 40 | 40 |
| std::result::Result::<T, E>::unwrap_unchecked | 1 | 37 | 37 |
| std::cmp::Ord::min | 1 | 32 | 32 |
| std::cmp::impls::<impl std::cmp::Ord for usize>::cmp | 1 | 31 | 31 |
| std::intrinsics::is_aligned_and_not_null | 1 | 27 | 27 |
| std::rt::lang_start | 1 | 27 | 27 |
| std::ptr::NonNull::<T>::new | 1 | 24 | 24 |
| std::fmt::ArgumentV1::<'a>::new_debug | 1 | 22 | 22 |
| std::fmt::Arguments::<'a>::new_v1_formatted | 1 | 19 | 19 |
| std::rt::lang_start::{closure#0} | 1 | 17 | 17 |
| std::sys_common::backtrace::__rust_begin_short_backtrace | 1 | 16 | 16 |
| std::slice::<impl [T]>::into_vec | 3 | 5 | 15 |
| <std::ptr::NonNull<T> as std::convert::From<std::ptr::Unique<T>>>::from | 1 | 14 | 14 |
| <&T as std::fmt::Debug>::fmt | 1 | 12 | 12 |
| <&T as std::fmt::Display>::fmt | 1 | 12 | 12 |
| std::vec::Vec::<T, A>::len | 3 | 2 | 6 |
| <T as std::convert::Into<U>>::into | 1 | 5 | 5 |
| <T as std::convert::From<T>>::from | 1 | 2 | 2 |
| <() as std::process::Termination>::report | 1 | 2 | 2 |
| std::hint::unreachable_unchecked | 1 | 2 | 2 |
| core::fmt::UnsafeArg::new | 1 | 1 | 1 |

</details>

Since we discussed it together, r? `@wesleywiser.`
 2022-12-15 22:02:57 +01:00
bors
ec56537c43 Auto merge of #105356 - JakobDegen:more-custom-mir, r=oli-obk 
Custom MIR: Many more improvements

Commits are each atomic changes, best reviewed one at a time, with the exception that the last commit includes all the documentation.

### First commit

Unsafetyck was not correctly disabled before for `dialect = "built"` custom MIR. This is fixed and a regression test is added.

### Second commit

Implements `Discriminant`, `SetDiscriminant`, and `SwitchInt`.

### Third commit

Implements indexing, field, and variant projections.

### Fourth commit

Documents the previous commits and everything else.

There is some amount of weirdness here due to having to beat Rust syntax into cooperating with MIR concepts, but it hopefully should not be too much. All of it is documented.

r? `@oli-obk`
 2022-12-15 19:59:48 +00:00
Nilstrieb
651e41c14c Move TypeckResults to seperate module 2022-12-15 20:45:35 +01:00
Nilstrieb
153419b78f Small cleanup in parameterized 2022-12-15 20:41:07 +01:00
Esteban Küber
4d4d4786f9 Shorten trimmed display of closures 
When `with_forced_trimmed_paths` is used, only print filename and start
of the closure's span, to reduce their verbosity.
 2022-12-15 11:13:44 -08:00
Matthias Krüger
a2c9f2a5e0
Rollup merge of #105627 - compiler-errors:dyn-auto-suggestable, r=davidtwco 
Auto traits in `dyn Trait + Auto` are suggestable

Not  sure why I had made the `IsSuggestableVisitor` have that rule to not consider `dyn Trait + Auto` to be suggestable.

It's possible that this was done because of the fact that we don't print the right parentheses for `&(dyn Trait + Auto)`, but that's a problem with printing these types in general that we probably have tracked somewhere else...
 2022-12-15 12:46:01 +01:00
Nicholas Nethercote
5258b655a2 Merge SimplifiedTypeGen<D> into SimplifiedType. 
`SimplifiedTypeGen<DefId>` is the only instantiation used, so we don't
need the generic parameter.
 2022-12-15 15:13:19 +11:00
Nicholas Nethercote
2a5aabdfc2 Remove SimplifiedTypeGen::map_def. 
It's unused.
 2022-12-15 15:04:09 +11:00
b-naber
ff41359e65 address review 2022-12-14 21:32:42 +01:00
Rémy Rakic
74f4da44a5 add helper to get DefId from MonoItem 2022-12-14 20:17:52 +00:00
Michael Goulet
3eb5b62898 always use anonymize_bound_vars 2022-12-14 20:06:25 +00:00
Oli Scherer
b41a483e8a Fix rustdoc 2022-12-14 18:55:55 +00:00
Michael Goulet
cfa6a93a36 Auto traits in dyn are suggestable 2022-12-14 18:39:39 +00:00
Oli Scherer
18373fae35 Debug assertions hate this trick 2022-12-14 15:37:47 +00:00
Oli Scherer
49536667ff Fix some comments and only get the generics in debug mode 2022-12-14 15:36:39 +00:00
Oli Scherer
0ae3da34c3 Remove TraitRef::new 2022-12-14 15:36:39 +00:00
Oli Scherer
6af3638709 Prevent the creation of TraitRef without dedicated methods 2022-12-14 15:36:39 +00:00
Oli Scherer
a5cd3bde95 Ensure no one constructs AliasTys themselves 2022-12-14 15:36:39 +00:00
Oli Scherer
4ffe3bdf99 Remove one more usage of mk_substs_trait 2022-12-14 15:36:39 +00:00
Oli Scherer
1bf80249ae Remove many more cases of mk_substs_trait that can now use the iterator scheme` 2022-12-14 15:36:39 +00:00
Oli Scherer
0fe86aa977 Let mk_fn_def take an iterator instead to simplify some call sites 2022-12-14 15:36:39 +00:00
Oli Scherer
7fd9beedc2 Rename to match similar methods 2022-12-14 15:36:39 +00:00
Oli Scherer
fef872a875 Guard AliasTy creation against passing the wrong number of substs 2022-12-14 15:36:39 +00:00
Jakob Degen
c1b27eea45 Fix unsafetyck disabling for custom MIR 2022-12-14 01:02:35 -08:00
bors
918d0ac38e Auto merge of #104986 - compiler-errors:opaques, r=oli-obk 
Combine `ty::Projection` and `ty::Opaque` into `ty::Alias`

Implements https://github.com/rust-lang/types-team/issues/79.

This PR consolidates `ty::Projection` and `ty::Opaque` into a single `ty::Alias`, with an `AliasKind` and `AliasTy` type (renamed from `ty::ProjectionTy`, which is the inner data of `ty::Projection`) defined as so:

```
enum AliasKind {
  Projection,
  Opaque,
}

struct AliasTy<'tcx> {
  def_id: DefId,
  substs: SubstsRef<'tcx>,
}
```

Since we don't have access to `TyCtxt` in type flags computation, and because repeatedly calling `DefKind` on the def-id is expensive, these two types are distinguished with `ty::AliasKind`, conveniently glob-imported into `ty::{Projection, Opaque}`. For example:

```diff
  match ty.kind() {
-   ty::Opaque(..) =>
+   ty::Alias(ty::Opaque, ..) => {}
    _ => {}
  }
```

This PR also consolidates match arms that treated `ty::Opaque` and `ty::Projection` identically.

r? `@ghost`
 2022-12-14 01:19:24 +00:00
Matthias Krüger
1c86de25f1
Rollup merge of #105628 - spastorino:small-doc-fixes, r=compiler-errors 
Small doc fixes

r? `@compiler-errors`
 2022-12-13 19:57:12 +01:00
Michael Goulet
fbe66a6ef3 Address nits 
Co-authored-by: Oli Scherer <github35764891676564198441@oli-obk.de>
 2022-12-13 17:56:04 +00:00
Michael Goulet
0f9e414092 nit: docs 2022-12-13 17:48:55 +00:00
Michael Goulet
96cb18e864 Combine identical alias arms 2022-12-13 17:48:55 +00:00
Michael Goulet
61adaf8187 Combine projection and opaque into alias 2022-12-13 17:48:55 +00:00
Michael Goulet
c13bd83528 squash OpaqueTy and ProjectionTy into AliasTy 2022-12-13 17:40:27 +00:00
Michael Goulet
5c6afb850c ProjectionTy.item_def_id -> ProjectionTy.def_id 2022-12-13 17:34:44 +00:00