[llvm] [CodeGen] Avoid MachineModuleInfo in MachineModuleSlotTracker (PR #140530)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> [#88610 (review)](https://github.com/llvm/llvm-project/pull/88610#pullrequestreview-2000656280)

At this point MachineModuleInfo is just about reduced to the minimal map of IR Function to MachineFunction, the extra state has been removed. MachineModuleAnalysis still just holds a reference to the owning MachineModuleInfo? 


https://github.com/llvm/llvm-project/pull/140530