AsmPrinterAnalysis.h

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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Holds an AsmPrinter instance so that state can be shared appropriately
// between the Module and MachineFunction portions of AsmPrinter.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CODEGEN_ASMPRINTERANALYSIS_H
#define LLVM_CODEGEN_ASMPRINTERANALYSIS_H
 
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/IR/Analysis.h"
#include "llvm/IR/PassManager.h"
 
namespace llvm {
 
class AsmPrinterAnalysis : public AnalysisInfoMixin<AsmPrinterAnalysis> {
public:
  static AnalysisKey Key;
  std::unique_ptr<AsmPrinter> HeldPrinter;
 
  class Result {
    AsmPrinter &Printer;
    Result(AsmPrinter &Printer) : Printer(Printer) {}
    friend class AsmPrinterAnalysis;
 
  public:
    AsmPrinter &getPrinter() { return Printer; }
 
    bool invalidate(Module &, const PreservedAnalyses,
                    ModuleAnalysisManager::Invalidator &) {
      return false;
    }
  };
 
  Result run(Module &M, ModuleAnalysisManager &) {
    return Result(*HeldPrinter);
  }
 
public:
  AsmPrinterAnalysis(std::unique_ptr<AsmPrinter> Printer)
      : HeldPrinter(std::move(Printer)) {}
};
 
} // namespace llvm
 
#endif //  LLVM_CODEGEN_ASMPRINTERANALYSIS_H