[llvm-branch-commits] [llvm] [CodeGen][NewPM] Port RegisterCoalescer to NPM (PR #124698)

[Akshat Oke via llvm-branch-commits]

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@@ -0,0 +1,28 @@
+//===- llvm/CodeGen/RegisterCoalescerPass.h ---------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_REGISTER_COALESCERPASS_H
+#define LLVM_CODEGEN_REGISTER_COALESCERPASS_H
+
+#include "llvm/CodeGen/MachinePassManager.h"
+
+namespace llvm {
+class RegisterCoalescerPass : public PassInfoMixin<RegisterCoalescerPass> {
+public:
+  PreservedAnalyses run(MachineFunction &MF,
+                        MachineFunctionAnalysisManager &MFAM);
+
+  MachineFunctionProperties getClearedProperties() const {
+    return MachineFunctionProperties().set(
+        MachineFunctionProperties::Property::IsSSA);
+  }
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optimisan wrote:

It does work; `MFPropsModifier` handles these methods as a RAII class (which I have missed to use in run(), I'll update that in a while)

https://github.com/llvm/llvm-project/pull/124698