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Rollup of 7 pull requests #112702

Merged
merged 17 commits into from
Jun 16, 2023
Merged

Rollup of 7 pull requests #112702

merged 17 commits into from
Jun 16, 2023

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Dylan-DPC
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Successful merges:

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

compiler-errors and others added 17 commits June 7, 2023 18:18
It fixes the following error:
error[E0412]: cannot find type `sockcred2` in module `libc`
   --> library/std/src/os/unix/net/ancillary.rs:211:29
    |
211 | pub struct SocketCred(libc::sockcred2);
    |                             ^^^^^^^^^ not found in `libc`
The other major steps in `partition` have their own function, so it's
nice for this one to be likewise.
The comment says "Find the smallest CGU that has exported symbols and
put the dead function stubs in that CGU". But the code sorts the CGUs by
size (smallest first) and then searches them in reverse order, which
means it will find the *largest* CGU that has exported symbols.

The erroneous code was introduced in rust-lang#92142.

This commit changes it to use a simpler search, avoiding the sort, and
fixes the bug in the process.
Always put the `create_size_estimate` calls and `debug_dump` calls
within a timed scopes. This makes the four main steps look more similar
to each other.
…rrors

fix: inline `predicate_may_hold_fatal` and remove expect call in it

- Fixes rust-lang#105231
- Discussion: rust-lang#111985 (comment)

r? ``@compiler-errors``
…t-universe, r=lcnr

Instantiate closure synthetic substs in root universe

In the UI test example, we end up generalizing an associated type (something like `<Map<Option<i32>, [closure upvars=?0]> as IntoIterator>::Item` generalizes into `<Map<Option<i32>, [closure upvars=?1]> as IntoIterator>::Item`) then assigning it to itself, emitting an alias-relate goal. This trivially holds via one of the normalizes-to candidates, instead of relating substs, so when closure analysis eventually sets `?0` to the actual upvars, `?1` never gets constrained. This ends up being reported as an ambiguity error during writeback.

Instead, we can take advantage of the fact that we *know* the closure substs live in the root universe. This will prevent them being generalized, since they always can be named, and the alias-relate above never gets emitted at all.

We can probably do this to a handful of other `next_ty_var` calls in typeck for variables that are clearly associated with the body of the program, but I wanted to limit this for now. Eventually, if we end up representing universes more faithfully like a tree or whatever, we can remove this and turn it back to just a call to `next_ty_var`.

Note: This is incredibly order-dependent -- we need to be assigning a type variable that was created *before* the closure substs, and we also need to actually have an unnormalized type at the time of the assignment. This currently seems easiest to trigger during call argument analysis just due to the fact that we instantiate the call's substs, normalize, THEN check args.

r? ```@lcnr```
…unistically-resolve-regions, r=lcnr

Opportunistically resolve regions in new solver

Use `opportunistic_resolve_var` during canonicalization to collapse some regions.

We have to start using `CanonicalVarValues::is_identity_modulo_regions`. We also have to modify that function to consider responses like `['static, ^0, '^1, ^2]` to be an "identity" response, since because we opportunistically resolve regions, there's no longer a 1:1 mapping between canonical var values and bound var indices in the response...

There's one nasty side-effect -- one test (`tests/ui/dyn-star/param-env-infer.rs`) starts to ICE because the certainty goes from `Yes` to `Maybe(Overflow)`... Not exactly sure why, though? Putting this up for discussion/investigation.

r? ```@lcnr```
reorder attributes to make miri-test-libstd work again

Fixes fallout from rust-lang#110141
Fix building libstd documentation on FreeBSD.

It fixes the following error:
```
error[E0412]: cannot find type `sockcred2` in module `libc`
   --> library/std/src/os/unix/net/ancillary.rs:211:29
    |
211 | pub struct SocketCred(libc::sockcred2);
    |                             ^^^^^^^^^ not found in `libc`
```
…esleywiser

Fix `dead_code_cgu` computation

This PR fixes a bug in `dead_code_cgu` computation, and also does some refactoring.

r? ```@wesleywiser```
…nnethercote

Handle interpolated literal errors

Not sure why it was doing a whole dance to re-match on the token kind when it seems like `Lit::from_token` does the right thing for both macro-arg and regular literals. Nothing seems to have regressed diagnostics-wise from the change, though.

Fixes rust-lang#112622

r? ``@nnethercote``
@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver) rollup A PR which is a rollup labels Jun 16, 2023
@Dylan-DPC
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@bors r+ rollup=never p=5

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bors commented Jun 16, 2023

📌 Commit c2e1097 has been approved by Dylan-DPC

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 16, 2023
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bors commented Jun 16, 2023

⌛ Testing commit c2e1097 with merge 2304917...

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bors commented Jun 16, 2023

☀️ Test successful - checks-actions
Approved by: Dylan-DPC
Pushing 2304917 to master...

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bors commented Jun 16, 2023

☀️ Test successful - checks-actions
Approved by: Dylan-DPC
Pushing 2304917 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Jun 16, 2023
@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Jun 16, 2023
@bors bors merged commit 2304917 into rust-lang:master Jun 16, 2023
@rustbot rustbot added this to the 1.72.0 milestone Jun 16, 2023
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📌 Perf builds for each rolled up PR:

PR# Perf Build Sha
#112642 90532b47570048ed8d89c7c4a450322b1af5223b
#112639 a56d869f0696807b5a896ab98467dda920d5c672
#112579 d16b206543ccc0aad0f8f8d4682292f8ec2f3484
#112535 b8b7f229258dce8c486e47e2518bcaec8c6be5f3
#112443 e05c11b3bf03fb761299839dc8163997531cc65a
#112399 7a265019a7f9058d8dd5ab2a596703857f1e24e3
#112163 cb7fa3d6f742d3337e82bd16dfb262ff9d4b5f4e

previous master: 99b334696f

In the case of a perf regression, run the following command for each PR you suspect might be the cause: @rust-timer build $SHA

@Dylan-DPC Dylan-DPC deleted the rollup-12d6qay branch June 16, 2023 15:23
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Finished benchmarking commit (2304917): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-3.2% [-3.7%, -1.7%] 7
All ❌✅ (primary) - - 0

Max RSS (memory usage)

This benchmark run did not return any relevant results for this metric.

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
2.3% [2.3%, 2.3%] 1
Regressions ❌
(secondary)
2.1% [2.1%, 2.1%] 1
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-3.3% [-3.6%, -3.1%] 6
All ❌✅ (primary) 2.3% [2.3%, 2.3%] 1

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 646.331s -> 648.664s (0.36%)

@lqd
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lqd commented Jun 21, 2023

Just checking if #112399 is the source of the secondary wins here.

@rust-timer build 7a265019a7f9058d8dd5ab2a596703857f1e24e3

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Finished benchmarking commit (7a265019a7f9058d8dd5ab2a596703857f1e24e3): comparison URL.

Overall result: ✅ improvements - no action needed

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-3.4% [-3.8%, -3.2%] 6
All ❌✅ (primary) - - 0

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
-2.5% [-2.5%, -2.5%] 1
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) -2.5% [-2.5%, -2.5%] 1

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
2.5% [2.3%, 2.7%] 3
Improvements ✅
(primary)
-3.3% [-4.9%, -1.2%] 8
Improvements ✅
(secondary)
-3.2% [-3.9%, -1.2%] 7
All ❌✅ (primary) -3.3% [-4.9%, -1.2%] 8

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 646.331s -> 647.006s (0.10%)

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9 participants