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Tracking issue for release notes of #133807: ci: Enable opt-dist for dist-aarch64-linux builds #135482

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Tracking issue for release notes of #133807: ci: Enable opt-dist for dist-aarch64-linux builds#135482
Labels
A-CIArea: Our Github Actions CIA-LTOArea: Link-time optimization (LTO)A-PGOArea: Profile-guided optimizations (PGO)T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.relnotesMarks issues that should be documented in the release notes of the next release.relnotes-tracking-issueMarks issues tracking what text to put in release notes.
Milestone
1.86.0

Description

@rustbot
rustbot
opened on Jan 14, 2025

This issue tracks the release notes text for #133807.

Steps

  • Proposed text is drafted by PR author (or team) making the noteworthy change.
  • Issue is nominated for release team review of clarity for wider audience.
  • Release team includes text in release notes/blog posts.

Release notes text

The responsible team for the underlying change should edit this section to replace the automatically generated link with a succinct description of what changed, drawing upon text proposed by the author (either in discussion or through direct editing).

# Internal Changes
- [Build the rustc on AArch64 Linux with ThinLTO + PGO.](https://github.com/rust-lang/rust/pull/133807)
The ARM 64-bit compiler (AArch64) on Linux is now optimized with ThinLTO and PGO, similar to the optimizations we have already performed for the x86-64 compiler on Linux. This should make it up to 30% faster.

Tip

Use the previous releases categories to help choose which one(s) to use.
The category will be de-duplicated with all the other ones by the release team.

More than one section can be included if needed.

Release blog section

If the change is notable enough for inclusion in the blog post, the responsible team should add content to this section.
Otherwise leave it empty.



cc @mrkajetanp, @Kobzol -- origin issue/PR authors and assignees for starting to draft text
Activity
  1. rustbot
    added 
    A-testsuiteArea: The testsuite used to check the correctness of rustc
     
    relnotesMarks issues that should be documented in the release notes of the next release.
     
    relnotes-tracking-issueMarks issues tracking what text to put in release notes.
     
    T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.
     
    needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging
     on Jan 14, 2025
  2. mrkajetanp commented on Jan 14, 2025 
    @mrkajetanp
    mrkajetanp
    on Jan 14, 2025
    Contributor
    s/Aarch64/AArch64 but looks good otherwise :)
  3. jieyouxu
    added 
    T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
     and removed 
    A-testsuiteArea: The testsuite used to check the correctness of rustc
     
    needs-triageThis issue may need triage. Remove when done. See docs forge.rust-lang.org/release/issue-triaging
     on Jan 14, 2025
  4. lqd commented on Jan 14, 2025 
    @lqd
    lqd
    on Jan 14, 2025
    Member
    maybe even s/LTO/ThinLTO/
  5. Noratrieb commented on Jan 15, 2025 
    @Noratrieb
    Noratrieb
    on Jan 15, 2025
    Member
    and a s/x64/x86-64/ because replacements are so much fun
  6. rustbot
    added this to the  1.86.0 milestone on Jan 15, 2025
  7. adamgemmell commented on Jan 16, 2025 
    @adamgemmell
    adamgemmell
    on Jan 16, 2025
    Contributor
    #135262 also included some notable compile time improvements that weren't included in the benchmarks posted for this PR. This is due to setting rust.jemalloc and and llvm.thin-lto we presume, placing the mean for rustc-perf about -13.46% for that PR.
    

    Total rustc-perf improvements on the debug-full profile across both PRs look something like up to 45%, with a 35% improvement for bootstrap/rustc-total. I don't currently have a mean value across both.
  8. jieyouxu
    added 
    A-LTOArea: Link-time optimization (LTO)
     
    A-PGOArea: Profile-guided optimizations (PGO)
     
    A-CIArea: Our Github Actions CI
     on Mar 22, 2025
  9. BoxyUwU
    closed this as completedon Apr 21, 2025
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    A-CIArea: Our Github Actions CIA-LTOArea: Link-time optimization (LTO)A-PGOArea: Profile-guided optimizations (PGO)T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.relnotesMarks issues that should be documented in the release notes of the next release.relnotes-tracking-issueMarks issues tracking what text to put in release notes.
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