cpython

fba5dded - gh-134584: Decref elimination for float ops in the JIT (GH-134588)

gh-134584: Decref elimination for float ops in the JIT (GH-134588) This PR adds a PyJitRef API to the JIT's optimizer that mimics the _PyStackRef API. This allows it to track references and their stack lifetimes properly. Thus opening up the doorway to refcount elimination in the JIT.