GH-122155: Track local variables between pops and pushes in cases generator by markshannon · Pull Request #122286 · python/cpython
The current design of the cases generator assumes that the code generator can infer all it needs to know from looking at the stack comments of individual micro-ops. However this isn't true within a tier 1 instruction if the intermediate stack grows during an instruction.
This PR tracks local values during micro ops, between them being popped from the stack and pushed back to the stack.