leanprover / leanprover/lean4

LLVM Backend: Make Module, TargetMachine, Context into lean_external_object

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Lean
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Description

Currently, the objects Context and TargetMachine are allocated and freed manually. It would be nice to make them lean_external_objects, so that they can be automatically freed by the Lean reference counting system.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the LLVM backend code that allocates and frees Context and TargetMachine, then inspect how Module is represented and managed. The change is complete when these objects use lean_external_object ownership and the existing manual cleanup paths are no longer needed.

Written by the indexing model from the issue text.

Assessment

Domain
backend, compilers
Issue type
Refactor
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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