Provide the llvm.is.constant/__builtin_constant_p intrinsic
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Description
These can be useful for inlining the simple cases of some functions (something like memcpy) without a code size penalty in the more complicated cases.
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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 reviewing the requested llvm.is.constant and __builtin_constant_p intrinsics and determine what Rust-facing scope the proposal requires. The issue names no files or tests, so establish the relevant compiler entry points and define completion as a documented, reviewed proposal for providing these intrinsics.
Written by the indexing model from the issue text.
Assessment
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100