1 //===-- AMDGPUCodeEmitter.h - AMDGPU Code Emitter interface -----*- 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 /// \file
10 /// CodeEmitter interface for SI codegen.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCCODEEMITTER_H
15 #define LLVM_LIB_TARGET_AMDGPU_MCTARGETDESC_AMDGPUMCCODEEMITTER_H
16 
17 #include "llvm/ADT/APInt.h"
18 #include "llvm/MC/MCCodeEmitter.h"
19 #include <cstdint>
20 
21 namespace llvm {
22 
23 class MCInst;
24 class MCInstrInfo;
25 class MCOperand;
26 class MCSubtargetInfo;
27 class FeatureBitset;
28 
29 class AMDGPUMCCodeEmitter : public MCCodeEmitter {
30   virtual void anchor();
31 
32 protected:
33   const MCInstrInfo &MCII;
34 
35   AMDGPUMCCodeEmitter(const MCInstrInfo &mcii) : MCII(mcii) {}
36 
37 public:
38   void getBinaryCodeForInstr(const MCInst &MI, SmallVectorImpl<MCFixup> &Fixups,
39                              APInt &Inst, APInt &Scratch,
40                              const MCSubtargetInfo &STI) const;
41 
42   virtual void getMachineOpValue(const MCInst &MI, const MCOperand &MO,
43                                  APInt &Op, SmallVectorImpl<MCFixup> &Fixups,
44                                  const MCSubtargetInfo &STI) const = 0;
45 
46   virtual void getSOPPBrEncoding(const MCInst &MI, unsigned OpNo, APInt &Op,
47                                  SmallVectorImpl<MCFixup> &Fixups,
48                                  const MCSubtargetInfo &STI) const = 0;
49 
50   virtual void getSMEMOffsetEncoding(const MCInst &MI, unsigned OpNo, APInt &Op,
51                                      SmallVectorImpl<MCFixup> &Fixups,
52                                      const MCSubtargetInfo &STI) const = 0;
53 
54   virtual void getSDWASrcEncoding(const MCInst &MI, unsigned OpNo, APInt &Op,
55                                   SmallVectorImpl<MCFixup> &Fixups,
56                                   const MCSubtargetInfo &STI) const = 0;
57 
58   virtual void getSDWAVopcDstEncoding(const MCInst &MI, unsigned OpNo,
59                                       APInt &Op,
60                                       SmallVectorImpl<MCFixup> &Fixups,
61                                       const MCSubtargetInfo &STI) const = 0;
62 
63   virtual void getAVOperandEncoding(const MCInst &MI, unsigned OpNo, APInt &Op,
64                                     SmallVectorImpl<MCFixup> &Fixups,
65                                     const MCSubtargetInfo &STI) const = 0;
66 
67 protected:
68   FeatureBitset computeAvailableFeatures(const FeatureBitset &FB) const;
69   void
70   verifyInstructionPredicates(const MCInst &MI,
71                               const FeatureBitset &AvailableFeatures) const;
72 };
73 
74 } // End namespace llvm
75 
76 #endif
77