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//===-- lib/CodeGen/AsmPrinter/AsmPrinterHandler.h -------------*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains a generic interface for AsmPrinter handlers,
// like debug and EH info emitters.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_ASMPRINTERHANDLER_H
#define LLVM_LIB_CODEGEN_ASMPRINTER_ASMPRINTERHANDLER_H
#include "llvm/Support/DataTypes.h"
namespace llvm {
class AsmPrinter;
class MachineBasicBlock;
class MachineFunction;
class MachineInstr;
class MCSymbol;
typedef MCSymbol *ExceptionSymbolProvider(AsmPrinter *Asm);
/// \brief Collects and handles AsmPrinter objects required to build debug
/// or EH information.
class AsmPrinterHandler {
public:
virtual ~AsmPrinterHandler();
/// \brief For symbols that have a size designated (e.g. common symbols),
/// this tracks that size.
virtual void setSymbolSize(const MCSymbol *Sym, uint64_t Size) = 0;
/// \brief Emit all sections that should come after the content.
virtual void endModule() = 0;
/// \brief Gather pre-function debug information.
/// Every beginFunction(MF) call should be followed by an endFunction(MF)
/// call.
virtual void beginFunction(const MachineFunction *MF) = 0;
// \brief Emit any of function marker (like .cfi_endproc). This is called
// before endFunction and cannot switch sections.
virtual void markFunctionEnd();
/// \brief Gather post-function debug information.
/// Please note that some AsmPrinter implementations may not call
/// beginFunction at all.
virtual void endFunction(const MachineFunction *MF) = 0;
virtual void beginFragment(const MachineBasicBlock *MBB,
ExceptionSymbolProvider ESP) {}
virtual void endFragment() {}
/// \brief Emit target-specific EH funclet machinery.
virtual void beginFunclet(const MachineBasicBlock &MBB,
MCSymbol *Sym = nullptr) {}
virtual void endFunclet() {}
/// \brief Process beginning of an instruction.
virtual void beginInstruction(const MachineInstr *MI) = 0;
/// \brief Process end of an instruction.
virtual void endInstruction() = 0;
};
} // End of namespace llvm
#endif
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