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//===-- AsmAnnotationWriter.h - Itf for annotation .ll files - --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Clients of the assembly writer can use this interface to add their own
// special-purpose annotations to LLVM assembly language printouts. Note that
// the assembly parser won't be able to parse these, in general, so
// implementations are advised to print stuff as LLVM comments.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ASSEMBLY_ASMANNOTATIONWRITER_H
#define LLVM_ASSEMBLY_ASMANNOTATIONWRITER_H
#include <iosfwd>
namespace llvm {
class Function;
class BasicBlock;
class Instruction;
struct AssemblyAnnotationWriter {
virtual ~AssemblyAnnotationWriter();
// emitFunctionAnnot - This may be implemented to emit a string right before
// the start of a function.
virtual void emitFunctionAnnot(const Function *F, std::ostream &OS) {}
// emitBasicBlockStartAnnot - This may be implemented to emit a string right
// after the basic block label, but before the first instruction in the block.
virtual void emitBasicBlockStartAnnot(const BasicBlock *BB, std::ostream &OS){
}
// emitBasicBlockEndAnnot - This may be implemented to emit a string right
// after the basic block.
virtual void emitBasicBlockEndAnnot(const BasicBlock *BB, std::ostream &OS){
}
// emitInstructionAnnot - This may be implemented to emit a string right
// before an instruction is emitted.
virtual void emitInstructionAnnot(const Instruction *I, std::ostream &OS) {}
};
} // End llvm namespace
#endif
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