1 //===-- AsmAnnotationWriter.h - Itf for annotation .ll files - --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Clients of the assembly writer can use this interface to add their own
11 // special-purpose annotations to LLVM assembly language printouts. Note that
12 // the assembly parser won't be able to parse these, in general, so
13 // implementations are advised to print stuff as LLVM comments.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_ASSEMBLY_ASMANNOTATIONWRITER_H
18 #define LLVM_ASSEMBLY_ASMANNOTATIONWRITER_H
26 class formatted_raw_ostream;
28 class AssemblyAnnotationWriter {
31 virtual ~AssemblyAnnotationWriter();
33 /// emitFunctionAnnot - This may be implemented to emit a string right before
34 /// the start of a function.
35 virtual void emitFunctionAnnot(const Function *F, raw_ostream &OS) {}
37 /// emitBasicBlockStartAnnot - This may be implemented to emit a string right
38 /// after the basic block label, but before the first instruction in the block.
39 virtual void emitBasicBlockStartAnnot(const BasicBlock *BB, raw_ostream &OS){
42 /// emitBasicBlockEndAnnot - This may be implemented to emit a string right
43 /// after the basic block.
44 virtual void emitBasicBlockEndAnnot(const BasicBlock *BB, raw_ostream &OS){
47 /// emitInstructionAnnot - This may be implemented to emit a string right
48 /// before an instruction is emitted.
49 virtual void emitInstructionAnnot(const Instruction *I, raw_ostream &OS) {}
51 /// printInfoComment - This may be implemented to emit a comment to the
52 /// right of an instruction or global value.
53 virtual void printInfoComment(const Value &V, formatted_raw_ostream &OS) {}
56 } // End llvm namespace