[llvm] AMDGPU/NewPM Port GCNDPPCombine to NPM (PR #105816)

[Christudasan Devadasan via llvm-commits]

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@@ -0,0 +1,28 @@
+//=======--- GCNDPPCombine.h - optimization for DPP instructions ---==========//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_AMDGPU_GCNDPPCOMBINE_H
+#define LLVM_LIB_TARGET_AMDGPU_GCNDPPCOMBINE_H
+
+#include "llvm/CodeGen/MachinePassManager.h"
+
+namespace llvm {
+class GCNDPPCombinePass : public PassInfoMixin<GCNDPPCombinePass> {
+public:
+  PreservedAnalyses run(MachineFunction &MF,
+                        MachineFunctionAnalysisManager &MAM);
+
+  MachineFunctionProperties getRequiredProperties() {
+    return MachineFunctionProperties().set(
+        MachineFunctionProperties::Property::IsSSA);
+  }
+};
+
+} // end namespace llvm
+
+#endif
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cdevadas wrote:

```suggestion
#endif // LLVM_LIB_TARGET_AMDGPU_GCNDPPCOMBINE_H
```

https://github.com/llvm/llvm-project/pull/105816