[llvm] [NewPM] Port MachineCombiner to the new pass manager (PR #217279)

[Aiden Grossman via llvm-commits]

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@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// 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_CODEGEN_MACHINECOMBINER_H
+#define LLVM_CODEGEN_MACHINECOMBINER_H
+
+#include "llvm/CodeGen/MachinePassManager.h"
+
+namespace llvm {
+
+class MachineCombinerPass : public RequiredPassInfoMixin<MachineCombinerPass> {
+public:
+  LLVM_ABI PreservedAnalyses run(MachineFunction &MF,
+                                 MachineFunctionAnalysisManager &MFAM);
+
+  MachineFunctionProperties getRequiredProperties() const {
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boomanaiden154 wrote:

This isn't present in the Legacy version so we probably shouldn't have it here.

https://github.com/llvm/llvm-project/pull/217279