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Improve codegen diagnostic handling #121129

Merged
merged 3 commits into from
Feb 22, 2024
Merged

Improve codegen diagnostic handling #121129

merged 3 commits into from
Feb 22, 2024

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nnethercote
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Clarify the workings of the temporary Diagnostic type used to send diagnostics from codegen threads to the main thread.

r? @estebank

@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. labels Feb 15, 2024
@nnethercote
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This is a rehash of what I attempted in #120575, before I learned that rustc_errors::Diagnostic doesn't impl Send in all configurations.

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bors commented Feb 15, 2024

☔ The latest upstream changes (presumably #120931) made this pull request unmergeable. Please resolve the merge conflicts.

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rustbot commented Feb 15, 2024

Some changes occurred to the CTFE / Miri engine

cc @rust-lang/miri

@nnethercote
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☔ The latest upstream changes (presumably #120931) made this pull request unmergeable. Please resolve the merge conflicts.

I fixed the conflicts, and that change actually let me do an additional cleanup involving Diagnostic::args, which is nice.

cc @chenyukang

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bors commented Feb 20, 2024

☔ The latest upstream changes (presumably #120576) made this pull request unmergeable. Please resolve the merge conflicts.

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I rebased.

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bors commented Feb 21, 2024

☔ The latest upstream changes (presumably #121400) made this pull request unmergeable. Please resolve the merge conflicts.

@nnethercote
Overhaul Diagnostic args.
b38ed1a 
First, introduce a typedef `DiagnosticArgMap`.

Second, make the `args` field public, and remove the `args` getter and
`replace_args` setter. These were necessary previously because the getter
had a `#[allow(rustc::potential_query_instability)]` attribute, but that
was removed in rust-lang#120931 when the args were changed from `FxHashMap` to
`FxIndexMap`. (All the other `Diagnostic` fields are public.)
@nnethercote
Overhaul rustc_codegen_ssa::back::write::Diagnostic.
ad5d7f4 
- Make it more closely match `rustc_errors::Diagnostic`, by making the
  field names match, and adding `children`, which requires adding
  `rustc_codegen_ssa::back::write::Subdiagnostic`.
- Check that we aren't missing important info when converting
  diagnostics.
- Add better comments.
- Tweak `rustc_errors::Diagnostic::replace_args` so that we don't need
  to do any cloning when converting diagnostics.
@nnethercote
Remove SharedEmitterMessage::AbortIfErrors.
6efffd7 
It's always paired wth `SharedEmitterMessage::Diagnostic`, so the two
can be merged.
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Another rebase, woo!

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@bors r+

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bors commented Feb 22, 2024

📌 Commit 6efffd7 has been approved by estebank

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 Feb 22, 2024
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bors commented Feb 22, 2024

⌛ Testing commit 6efffd7 with merge f70f19f...

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bors commented Feb 22, 2024

☀️ Test successful - checks-actions
Approved by: estebank
Pushing f70f19f to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Feb 22, 2024
@bors bors merged commit f70f19f into rust-lang:master Feb 22, 2024
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@rustbot rustbot added this to the 1.78.0 milestone Feb 22, 2024
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Finished benchmarking commit (f70f19f): 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)		 -5.1% [-5.1%, -5.1%] 1
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)		 -2.3% [-2.3%, -2.3%] 1
Improvements ✅
(secondary)		 -3.9% [-3.9%, -3.9%] 1
All ❌✅ (primary) -2.3% [-2.3%, -2.3%] 1

Cycles

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

Binary size

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

Bootstrap: 648.961s -> 649.949s (0.15%)
Artifact size: 310.94 MiB -> 310.94 MiB (-0.00%)

@matthiaskrgr matthiaskrgr mentioned this pull request Feb 22, 2024
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@nnethercote nnethercote deleted the codegen-Diags branch February 22, 2024 21:13
@matthiaskrgr matthiaskrgr mentioned this pull request Feb 23, 2024
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merged-by-bors This PR was explicitly merged by bors. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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