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

[Valery Pykhtin via llvm-commits]

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@@ -0,0 +1,78 @@
+//===- MachineSSAUpdaterBulk.h - Unstructured SSA Update Tool ----------*- C++
+//-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the MachineSSAUpdater2 class.
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vpykhtin wrote:

Sure, but let's finish with other issues, just not to mess up the review.  Open to suggestion though.

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