rust-lang / rust-lang/rustc-perf
Fix running Cranelift on benchmarks with LTO
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- Dominant language
- Rust
- Stars
- 733
- Forks
- 189
- Avg merge
- 10h 52m
- Merged PRs (30d)
- 43
Description
Cranelift cannot currently handle lto = "thin" (@bjorn3 right?), so it fails on benchmarks which use it. We should either disable LTO or (ideally) skip running Cranelift with such benchmarks.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the benchmark configurations that enable lto = "thin" and the code that runs benchmarks with Cranelift. Confirm the failure, then choose whether to disable LTO or skip incompatible benchmarks; done means Cranelift benchmarks no longer fail because of ThinLTO.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- performance
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100