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11a667f122
This lets external consumers customize the output, similar to how AssemblyAnnotationWriter lets the caller define callbacks when printing IR. The array of handlers already existed, this just cleans up the code so that it can be exposed publically. Replaces https://reviews.llvm.org/D74158 Differential Revision: https://reviews.llvm.org/D89613
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
//===-- llvm/CodeGen/AsmPrinterHandler.h -----------------------*- C++ -*--===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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_CODEGEN_ASMPRINTERHANDLER_H
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#define LLVM_CODEGEN_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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class Module;
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typedef MCSymbol *ExceptionSymbolProvider(AsmPrinter *Asm,
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const MachineBasicBlock *MBB);
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/// 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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/// 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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virtual void beginModule(Module *M) {}
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/// Emit all sections that should come after the content.
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virtual void endModule() = 0;
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/// 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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// 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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/// 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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/// 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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/// Process beginning of an instruction.
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virtual void beginInstruction(const MachineInstr *MI) = 0;
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/// Process end of an instruction.
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virtual void endInstruction() = 0;
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/// Process beginning of a basic block during basic block sections.
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virtual void beginBasicBlock(const MachineBasicBlock &MBB) {}
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/// Process end of a basic block during basic block sections.
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virtual void endBasicBlock(const MachineBasicBlock &MBB) {}
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};
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} // End of namespace llvm
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#endif
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