LLVM  9.0.0svn
MCCodeEmitter.h
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1 //===- llvm/MC/MCCodeEmitter.h - Instruction Encoding -----------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_MC_MCCODEEMITTER_H
10 #define LLVM_MC_MCCODEEMITTER_H
11 
12 namespace llvm {
13 
14 class MCFixup;
15 class MCInst;
16 class MCSubtargetInfo;
17 class raw_ostream;
18 template<typename T> class SmallVectorImpl;
19 
20 /// MCCodeEmitter - Generic instruction encoding interface.
22 protected: // Can only create subclasses.
23  MCCodeEmitter();
24 
25 public:
26  MCCodeEmitter(const MCCodeEmitter &) = delete;
27  MCCodeEmitter &operator=(const MCCodeEmitter &) = delete;
28  virtual ~MCCodeEmitter();
29 
30  /// Lifetime management
31  virtual void reset() {}
32 
33  /// EncodeInstruction - Encode the given \p Inst to bytes on the output
34  /// stream \p OS.
35  virtual void encodeInstruction(const MCInst &Inst, raw_ostream &OS,
37  const MCSubtargetInfo &STI) const = 0;
38 };
39 
40 } // end namespace llvm
41 
42 #endif // LLVM_MC_MCCODEEMITTER_H
This class represents lattice values for constants.
Definition: AllocatorList.h:23
MCCodeEmitter & operator=(const MCCodeEmitter &)=delete
virtual void encodeInstruction(const MCInst &Inst, raw_ostream &OS, SmallVectorImpl< MCFixup > &Fixups, const MCSubtargetInfo &STI) const =0
EncodeInstruction - Encode the given Inst to bytes on the output stream OS.
This class consists of common code factored out of the SmallVector class to reduce code duplication b...
Definition: APFloat.h:41
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:158
virtual void reset()
Lifetime management.
Definition: MCCodeEmitter.h:31
MCCodeEmitter - Generic instruction encoding interface.
Definition: MCCodeEmitter.h:21
virtual ~MCCodeEmitter()
Generic base class for all target subtargets.
This class implements an extremely fast bulk output stream that can only output to a stream...
Definition: raw_ostream.h:45