runtimeverification / runtimeverification/haskell-backend
Collect Ceil conditions from rewriting with rules that do not preserve definedness
Nobody has claimed this yet.
- Dominant language
- Haskell
- Stars
- 224
- Forks
- 43
- PR merge metrics
- No merged PRs in 30d
Description
Instead of aborting when an applicable rewrite rule does not preserve definedness, add a #Ceil(rewritten-config) to the constraints.
Better than this whole-sale solution would be to collect the #Ceil(partial-function-call-in-rhs) to avoid bloating the state.
Optimally, we also want to simplify these ceil conditions, either straight-away or before returning the result.
Immediate simplification would allow for early pruning , but might introduce considerable overhead.
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
No files, tests, or entry points are named. Start by locating the rewriting logic that aborts when a rule does not preserve definedness, then clarify which Ceil conditions should be collected and when simplification should occur. Done means applicable rules no longer abort and the resulting constraints are handled as agreed.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- haskell
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100