[llvm] [WIP][AMDGPU] combine uniform AMDGPU lane Intrinsics (PR #116953)

[Diana Picus via llvm-commits]

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@@ -0,0 +1,183 @@
+//===-- AMDGPUUniformIntrinsicCombine.cpp
+//-----------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// This pass combines uniform intrinsic instructions.
+/// Unifrom Intrinsic combine uses pattern match to identify and optimize
+/// redundent intrinsic instruction.
----------------
rovka wrote:

```suggestion
/// redundant intrinsic instructions.
```

https://github.com/llvm/llvm-project/pull/116953