[llvm] [Transforms] Add TrackingSSAUpdater wrapper for RAUW-safe SSA value tracking. (PR #220441)

[via llvm-commits]

carlobertolli wrote:

> I'd very much prefer not to have more of this magic value handle tracking.

point taken: comments in the other PR using this showed that this only tracks user provided values, but changes inside the ssa updater itself are not tracked. I will close this and work on one of the previous solutions to the problem in the other PR
(https://github.com/llvm/llvm-project/pull/215686)

https://github.com/llvm/llvm-project/pull/220441