PseudoProbePrinter.h

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//===- PseudoProbePrinter.h - Pseudo probe encoding support -----*- 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
//
//===----------------------------------------------------------------------===//
//
// This file contains support for writing pseudo probe info into asm files.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_PSEUDOPROBEPRINTER_H
#define LLVM_LIB_CODEGEN_ASMPRINTER_PSEUDOPROBEPRINTER_H
 
#include "llvm/ADT/DenseMap.h"
#include "llvm/CodeGen/AsmPrinterHandler.h"
 
namespace llvm {
 
class AsmPrinter;
class MCStreamer;
class Module;
class DILocation;
 
class PseudoProbeHandler : public AsmPrinterHandler {
  // Target of pseudo probe emission.
  AsmPrinter *Asm;
  // Name to GUID map, used as caching/memoization for speed.
  DenseMap<StringRef, uint64_t> NameGuidMap;
 
public:
  PseudoProbeHandler(AsmPrinter *A) : Asm(A){};
  ~PseudoProbeHandler() override;
 
  void emitPseudoProbe(uint64_t Guid, uint64_t Index, uint64_t Type,
                       uint64_t Attr, const DILocation *DebugLoc);
 
  // Unused.
  void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {}
  void endModule() override {}
  void beginFunction(const MachineFunction *MF) override {}
  void endFunction(const MachineFunction *MF) override {}
  void beginInstruction(const MachineInstr *MI) override {}
  void endInstruction() override {}
};
 
} // namespace llvm
#endif // LLVM_LIB_CODEGEN_ASMPRINTER_PSEUDOPROBEPRINTER_H