1 //===-- llvm/CodeGen/GCMetadataPrinter.h - Prints asm GC tables -*- 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 // The abstract base class GCMetadataPrinter supports writing GC metadata tables
11 // as assembly code. This is a separate class from GCStrategy in order to allow
12 // users of the LLVM JIT to avoid linking with the AsmWriter.
14 // Subclasses of GCMetadataPrinter must be registered using the
15 // GCMetadataPrinterRegistry. This is separate from the GCStrategy itself
16 // because these subclasses are logically plugins for the AsmWriter.
18 //===----------------------------------------------------------------------===//
20 #ifndef LLVM_CODEGEN_GCMETADATAPRINTER_H
21 #define LLVM_CODEGEN_GCMETADATAPRINTER_H
23 #include "llvm/CodeGen/GCMetadata.h"
24 #include "llvm/CodeGen/GCStrategy.h"
25 #include "llvm/Support/Registry.h"
29 class GCMetadataPrinter;
32 /// GCMetadataPrinterRegistry - The GC assembly printer registry uses all the
33 /// defaults from Registry.
34 typedef Registry<GCMetadataPrinter> GCMetadataPrinterRegistry;
36 /// GCMetadataPrinter - Emits GC metadata as assembly code.
38 class GCMetadataPrinter {
40 typedef GCStrategy::list_type list_type;
41 typedef GCStrategy::iterator iterator;
46 friend class AsmPrinter;
49 // May only be subclassed.
53 GCMetadataPrinter(const GCMetadataPrinter &);
54 GCMetadataPrinter &operator=(const GCMetadataPrinter &);
57 GCStrategy &getStrategy() { return *S; }
58 const Module &getModule() const { return S->getModule(); }
60 /// begin/end - Iterate over the collected function metadata.
61 iterator begin() { return S->begin(); }
62 iterator end() { return S->end(); }
64 /// beginAssembly/finishAssembly - Emit module metadata as assembly code.
65 virtual void beginAssembly(raw_ostream &OS, AsmPrinter &AP,
66 const TargetAsmInfo &TAI);
68 virtual void finishAssembly(raw_ostream &OS, AsmPrinter &AP,
69 const TargetAsmInfo &TAI);
71 virtual ~GCMetadataPrinter();