Clean up uses of the unstable `dwarf_version` option #135739

wesleywiser · 2025-01-19T19:23:34Z

Consolidate calculation of the effective value.
Check the target DebuginfoKind instead of using is_like_msvc.
Add the tracking issue to the unstable book page for this feature.

rustbot · 2025-01-19T19:23:42Z

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compiler/rustc_session/src/session.rs

lqd · 2025-01-19T21:08:03Z

Sweet, r? lqd and r=me with a tiny doc comment and green CI. Thanks!

mati865 · 2025-01-20T00:56:19Z

I think this might break windows-gnu targets. Their spec for some reason states pdb debuginfo but they use dwarf. Previously this was handled by is_like_msvc.

rust/compiler/rustc_target/src/spec/base/windows_gnu.rs

Line 102 in 9a1d156

debuginfo_kind: DebuginfoKind::Pdb,

wesleywiser · 2025-01-20T03:14:08Z

Thanks for pointing that out! That seems super weird. I'll look into that tomorrow.

lqd · 2025-01-20T09:10:23Z

Weird.

We should document that in both cg_llvm and the target specs themselves. And/or maybe the centralization should be in rustc_target/TargetOptions (but made available via the Session if you still want to, without that logic), since it's both target-specific and has subtle rules (that can contradict the spec fields).

…uginfokind, r=lqd Update windows-gnu targets to set `DebuginfoKind::DWARF` These targets have always used DWARF debuginfo and not CodeView/PDB debuginfo like the MSVC Windows targets. However, their target definitions claim to use `DebuginfoKind::PDB` probably to ensure that we do not try to allow the use of split-DWARF debuginfo. This does not appear to be necessary since the targets set their supported split debug info to `Off`. I've looked at all of the uses of these properties and this patch does not appear to cause any functional changes in compiler behavior. I also added UI tests to attempt to validate there is no change in the behavior of these options on stable compilers. cc `@mati865` since you mentioned this in rust-lang#135739 cc `@davidtwco` for split-dwarf

…uginfokind, r=lqd Update windows-gnu targets to set `DebuginfoKind::DWARF` These targets have always used DWARF debuginfo and not CodeView/PDB debuginfo like the MSVC Windows targets. However, their target definitions claim to use `DebuginfoKind::PDB` probably to ensure that we do not try to allow the use of split-DWARF debuginfo. This does not appear to be necessary since the targets set their supported split debug info to `Off`. I've looked at all of the uses of these properties and this patch does not appear to cause any functional changes in compiler behavior. I also added UI tests to attempt to validate there is no change in the behavior of these options on stable compilers. cc ``@mati865`` since you mentioned this in rust-lang#135739 cc ``@davidtwco`` for split-dwarf

…uginfokind, r=lqd Update windows-gnu targets to set `DebuginfoKind::DWARF` These targets have always used DWARF debuginfo and not CodeView/PDB debuginfo like the MSVC Windows targets. However, their target definitions claim to use `DebuginfoKind::PDB` probably to ensure that we do not try to allow the use of split-DWARF debuginfo. This does not appear to be necessary since the targets set their supported split debug info to `Off`. I've looked at all of the uses of these properties and this patch does not appear to cause any functional changes in compiler behavior. I also added UI tests to attempt to validate there is no change in the behavior of these options on stable compilers. cc ```@mati865``` since you mentioned this in rust-lang#135739 cc ```@davidtwco``` for split-dwarf

…uginfokind, r=lqd Update windows-gnu targets to set `DebuginfoKind::DWARF` These targets have always used DWARF debuginfo and not CodeView/PDB debuginfo like the MSVC Windows targets. However, their target definitions claim to use `DebuginfoKind::PDB` probably to ensure that we do not try to allow the use of split-DWARF debuginfo. This does not appear to be necessary since the targets set their supported split debug info to `Off`. I've looked at all of the uses of these properties and this patch does not appear to cause any functional changes in compiler behavior. I also added UI tests to attempt to validate there is no change in the behavior of these options on stable compilers. cc ````@mati865```` since you mentioned this in rust-lang#135739 cc ````@davidtwco```` for split-dwarf

wesleywiser · 2025-01-28T15:55:34Z

Now that #135790 has landed, I think this is good to go.

src/doc/unstable-book/src/compiler-flags/dwarf-version.md

lqd · 2025-01-28T16:57:55Z

r=me with the link fixed

- Consolidate calculation of the effective value. - Check the target `DebuginfoKind` instead of using `is_like_msvc`.

lqd · 2025-01-30T06:27:40Z

Thanks! @bors r+

bors · 2025-01-30T06:27:43Z

📌 Commit 4d5a63f has been approved by lqd

It is now in the queue for this repository.

…, r=lqd Clean up uses of the unstable `dwarf_version` option - Consolidate calculation of the effective value. - Check the target `DebuginfoKind` instead of using `is_like_msvc`. - Add the tracking issue to the unstable book page for this feature. cc rust-lang#103057

…iaskrgr Rollup of 8 pull requests Successful merges: - rust-lang#133636 ([rustdoc] Add sans-serif font setting) - rust-lang#135434 (Match Ergonomics 2024: update edition 2024 behavior of feature gates) - rust-lang#135739 (Clean up uses of the unstable `dwarf_version` option) - rust-lang#135882 (simplify `similar_tokens` from `Option<Vec<_>>` to `&[_]`) - rust-lang#136179 (Allow transmuting generic pattern types to and from their base) - rust-lang#136199 (Fix a couple Emscripten tests) - rust-lang#136238 (ci: refactor how directories are removed in free-disk-space disk) - rust-lang#136251 (use impl Into<String> instead of explicit type args with bounds) r? `@ghost` `@rustbot` modify labels: rollup

…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#133636 ([rustdoc] Add sans-serif font setting) - rust-lang#135434 (Match Ergonomics 2024: update edition 2024 behavior of feature gates) - rust-lang#135739 (Clean up uses of the unstable `dwarf_version` option) - rust-lang#135882 (simplify `similar_tokens` from `Option<Vec<_>>` to `&[_]`) - rust-lang#136179 (Allow transmuting generic pattern types to and from their base) - rust-lang#136199 (Fix a couple Emscripten tests) - rust-lang#136251 (use impl Into<String> instead of explicit type args with bounds) r? `@ghost` `@rustbot` modify labels: rollup

Rollup merge of rust-lang#135739 - wesleywiser:dwarf_version_handling, r=lqd Clean up uses of the unstable `dwarf_version` option - Consolidate calculation of the effective value. - Check the target `DebuginfoKind` instead of using `is_like_msvc`. - Add the tracking issue to the unstable book page for this feature. cc rust-lang#103057

rustbot assigned chenyukang Jan 19, 2025

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 Jan 19, 2025

wesleywiser force-pushed the dwarf_version_handling branch from 89c7fcc to a9fae0d Compare January 19, 2025 20:59

wesleywiser changed the title ~~Clean up uses of the unstable dwarf_verison option~~ Clean up uses of the unstable dwarf_version option Jan 19, 2025

lqd reviewed Jan 19, 2025

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rustbot assigned lqd and unassigned chenyukang Jan 19, 2025

wesleywiser force-pushed the dwarf_version_handling branch from a9fae0d to 26c10d0 Compare January 19, 2025 22:02

wesleywiser mentioned this pull request Jan 20, 2025

Update windows-gnu targets to set DebuginfoKind::DWARF #135790

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lqd reviewed Jan 28, 2025

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wesleywiser added 2 commits January 29, 2025 21:44

Clean up uses of the unstable dwarf_version option

51eaa0d

- Consolidate calculation of the effective value. - Check the target `DebuginfoKind` instead of using `is_like_msvc`.

Add tracking issue to docs

4d5a63f

wesleywiser force-pushed the dwarf_version_handling branch from 26c10d0 to 4d5a63f Compare January 30, 2025 03:45

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 Jan 30, 2025

matthiaskrgr mentioned this pull request Jan 30, 2025

Rollup of 8 pull requests #136285

Closed

matthiaskrgr mentioned this pull request Jan 30, 2025

Rollup of 7 pull requests #136292

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bors merged commit aedc0a3 into rust-lang:master Jan 30, 2025
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rustbot added this to the 1.86.0 milestone Jan 30, 2025

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Clean up uses of the unstable `dwarf_version` option #135739

Clean up uses of the unstable `dwarf_version` option #135739

wesleywiser commented Jan 19, 2025

rustbot commented Jan 19, 2025

lqd commented Jan 19, 2025

mati865 commented Jan 20, 2025

wesleywiser commented Jan 20, 2025

lqd commented Jan 20, 2025

wesleywiser commented Jan 28, 2025

lqd commented Jan 28, 2025

lqd commented Jan 30, 2025

bors commented Jan 30, 2025

Clean up uses of the unstable dwarf_version option #135739

Clean up uses of the unstable dwarf_version option #135739

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wesleywiser commented Jan 19, 2025

rustbot commented Jan 19, 2025

lqd commented Jan 19, 2025

mati865 commented Jan 20, 2025

wesleywiser commented Jan 20, 2025

lqd commented Jan 20, 2025

wesleywiser commented Jan 28, 2025

lqd commented Jan 28, 2025

lqd commented Jan 30, 2025

bors commented Jan 30, 2025

Clean up uses of the unstable `dwarf_version` option #135739

Clean up uses of the unstable `dwarf_version` option #135739