Consume ordering.
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Description
The atomic consume ordering is currently not implemented by LLVM. This ordering can be more efficient on systems where all access has consume semantics (such as arm.) Atomic intrinsics with consume semantics should be exposed so that code using such operations will have consume semantics once LLVM implements these operations. For now they can be translated to operations with acquire semantics.
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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 reading this RFC issue and the LLVM atomic intrinsics documentation. Determine how consume ordering should be exposed and temporarily translated to acquire semantics; done means Rust code can request consume ordering and the behavior is documented until LLVM supports it.
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Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100