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