[llvm] [NewPM][CodeGen] Add `FunctionToMachineFunctionAnalysis` (PR #88610)

[via llvm-commits]

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@@ -0,0 +1,48 @@
+//===- FunctionToMachineFunctionAnalysis.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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the definitions of the FunctionToMachineFunctionAnalysis
+// members.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/FunctionToMachineFunctionAnalysis.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/Target/TargetMachine.h"
+#include <atomic>
+
+using namespace llvm;
+
+AnalysisKey FunctionToMachineFunctionAnalysis::Key;
+
+bool FunctionToMachineFunctionAnalysis::Result::invalidate(
+    Function &, const PreservedAnalyses &PA,
+    FunctionAnalysisManager::Invalidator &) {
+  // Unless it is invalidated explicitly, it should remain preserved.
+  auto PAC = PA.getChecker<FunctionToMachineFunctionAnalysis>();
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paperchalice wrote:

IR analyses are unconditional preserved in `MachinePassModel`.

https://github.com/llvm/llvm-project/pull/88610