[llvm] [Inline][Cloning] Defer constant propagation after phi-nodes resolution (PR #87963)

[Nikita Popov via llvm-commits]

nikic wrote:

@danilaml It should be safe to drop. There used to be VMap-based CG updates for the legacy PM, but the relevant function went away entirely in https://github.com/llvm/llvm-project/commit/fa6ea7a419f37befbed04368bcb8af4c718facbb.

https://github.com/llvm/llvm-project/pull/87963