[llvm] [MachineSSAUpdater][AMDGPU] Add faster version of MachineSSAUpdater class. (PR #145722)

[Valery Pykhtin via llvm-commits]

================
@@ -0,0 +1,78 @@
+//===- MachineSSAUpdaterBulk.h - Unstructured SSA Update Tool ----------*- C++
----------------
vpykhtin wrote:

Renamed to MachineIDFSSAUpdater.

https://github.com/llvm/llvm-project/pull/145722