1 //===-- AMDGPUMCTargetDesc.cpp - AMDGPU Target Descriptions ---------------===//
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 /// This file provides AMDGPU specific target descriptions.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "AMDGPUMCTargetDesc.h"
15 #include "AMDGPUELFStreamer.h"
16 #include "AMDGPUInstPrinter.h"
17 #include "AMDGPUMCAsmInfo.h"
18 #include "AMDGPUTargetStreamer.h"
19 #include "R600InstPrinter.h"
20 #include "R600MCTargetDesc.h"
21 #include "TargetInfo/AMDGPUTargetInfo.h"
22 #include "llvm/MC/LaneBitmask.h"
23 #include "llvm/MC/MCAsmBackend.h"
24 #include "llvm/MC/MCCodeEmitter.h"
25 #include "llvm/MC/MCELFStreamer.h"
26 #include "llvm/MC/MCInstPrinter.h"
27 #include "llvm/MC/MCInstrAnalysis.h"
28 #include "llvm/MC/MCInstrDesc.h"
29 #include "llvm/MC/MCInstrInfo.h"
30 #include "llvm/MC/MCObjectWriter.h"
31 #include "llvm/MC/MCRegisterInfo.h"
32 #include "llvm/MC/MCStreamer.h"
33 #include "llvm/MC/MCSubtargetInfo.h"
34 #include "llvm/MC/TargetRegistry.h"
35
36 using namespace llvm;
37
38 #define GET_INSTRINFO_MC_DESC
39 #define ENABLE_INSTR_PREDICATE_VERIFIER
40 #include "AMDGPUGenInstrInfo.inc"
41
42 #define GET_SUBTARGETINFO_MC_DESC
43 #include "AMDGPUGenSubtargetInfo.inc"
44
45 #define NoSchedModel NoSchedModelR600
46 #define GET_SUBTARGETINFO_MC_DESC
47 #include "R600GenSubtargetInfo.inc"
48 #undef NoSchedModelR600
49
50 #define GET_REGINFO_MC_DESC
51 #include "AMDGPUGenRegisterInfo.inc"
52
53 #define GET_REGINFO_MC_DESC
54 #include "R600GenRegisterInfo.inc"
55
createAMDGPUMCInstrInfo()56 static MCInstrInfo *createAMDGPUMCInstrInfo() {
57 MCInstrInfo *X = new MCInstrInfo();
58 InitAMDGPUMCInstrInfo(X);
59 return X;
60 }
61
createAMDGPUMCRegisterInfo(const Triple & TT)62 static MCRegisterInfo *createAMDGPUMCRegisterInfo(const Triple &TT) {
63 MCRegisterInfo *X = new MCRegisterInfo();
64 if (TT.getArch() == Triple::r600)
65 InitR600MCRegisterInfo(X, 0);
66 else
67 InitAMDGPUMCRegisterInfo(X, AMDGPU::PC_REG);
68 return X;
69 }
70
createGCNMCRegisterInfo(AMDGPUDwarfFlavour DwarfFlavour)71 MCRegisterInfo *llvm::createGCNMCRegisterInfo(AMDGPUDwarfFlavour DwarfFlavour) {
72 MCRegisterInfo *X = new MCRegisterInfo();
73 InitAMDGPUMCRegisterInfo(X, AMDGPU::PC_REG, DwarfFlavour, DwarfFlavour);
74 return X;
75 }
76
77 static MCSubtargetInfo *
createAMDGPUMCSubtargetInfo(const Triple & TT,StringRef CPU,StringRef FS)78 createAMDGPUMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
79 if (TT.getArch() == Triple::r600)
80 return createR600MCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);
81 return createAMDGPUMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);
82 }
83
createAMDGPUMCInstPrinter(const Triple & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI)84 static MCInstPrinter *createAMDGPUMCInstPrinter(const Triple &T,
85 unsigned SyntaxVariant,
86 const MCAsmInfo &MAI,
87 const MCInstrInfo &MII,
88 const MCRegisterInfo &MRI) {
89 if (T.getArch() == Triple::r600)
90 return new R600InstPrinter(MAI, MII, MRI);
91 return new AMDGPUInstPrinter(MAI, MII, MRI);
92 }
93
94 static MCTargetStreamer *
createAMDGPUAsmTargetStreamer(MCStreamer & S,formatted_raw_ostream & OS,MCInstPrinter * InstPrint)95 createAMDGPUAsmTargetStreamer(MCStreamer &S, formatted_raw_ostream &OS,
96 MCInstPrinter *InstPrint) {
97 return new AMDGPUTargetAsmStreamer(S, OS);
98 }
99
createAMDGPUObjectTargetStreamer(MCStreamer & S,const MCSubtargetInfo & STI)100 static MCTargetStreamer * createAMDGPUObjectTargetStreamer(
101 MCStreamer &S,
102 const MCSubtargetInfo &STI) {
103 return new AMDGPUTargetELFStreamer(S, STI);
104 }
105
createAMDGPUNullTargetStreamer(MCStreamer & S)106 static MCTargetStreamer *createAMDGPUNullTargetStreamer(MCStreamer &S) {
107 return new AMDGPUTargetStreamer(S);
108 }
109
createMCStreamer(const Triple & T,MCContext & Context,std::unique_ptr<MCAsmBackend> && MAB,std::unique_ptr<MCObjectWriter> && OW,std::unique_ptr<MCCodeEmitter> && Emitter)110 static MCStreamer *createMCStreamer(const Triple &T, MCContext &Context,
111 std::unique_ptr<MCAsmBackend> &&MAB,
112 std::unique_ptr<MCObjectWriter> &&OW,
113 std::unique_ptr<MCCodeEmitter> &&Emitter) {
114 return createAMDGPUELFStreamer(T, Context, std::move(MAB), std::move(OW),
115 std::move(Emitter));
116 }
117
118 namespace {
119
120 class AMDGPUMCInstrAnalysis : public MCInstrAnalysis {
121 public:
AMDGPUMCInstrAnalysis(const MCInstrInfo * Info)122 explicit AMDGPUMCInstrAnalysis(const MCInstrInfo *Info)
123 : MCInstrAnalysis(Info) {}
124
evaluateBranch(const MCInst & Inst,uint64_t Addr,uint64_t Size,uint64_t & Target) const125 bool evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size,
126 uint64_t &Target) const override {
127 if (Inst.getNumOperands() == 0 || !Inst.getOperand(0).isImm() ||
128 Info->get(Inst.getOpcode()).operands()[0].OperandType !=
129 MCOI::OPERAND_PCREL)
130 return false;
131
132 int64_t Imm = Inst.getOperand(0).getImm();
133 // Our branches take a simm16, but we need two extra bits to account for
134 // the factor of 4.
135 APInt SignedOffset(18, Imm * 4, true);
136 Target = (SignedOffset.sext(64) + Addr + Size).getZExtValue();
137 return true;
138 }
139 };
140
141 } // end anonymous namespace
142
createAMDGPUMCInstrAnalysis(const MCInstrInfo * Info)143 static MCInstrAnalysis *createAMDGPUMCInstrAnalysis(const MCInstrInfo *Info) {
144 return new AMDGPUMCInstrAnalysis(Info);
145 }
146
LLVMInitializeAMDGPUTargetMC()147 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAMDGPUTargetMC() {
148
149 TargetRegistry::RegisterMCInstrInfo(getTheGCNTarget(), createAMDGPUMCInstrInfo);
150 TargetRegistry::RegisterMCInstrInfo(getTheR600Target(),
151 createR600MCInstrInfo);
152 for (Target *T : {&getTheR600Target(), &getTheGCNTarget()}) {
153 RegisterMCAsmInfo<AMDGPUMCAsmInfo> X(*T);
154
155 TargetRegistry::RegisterMCRegInfo(*T, createAMDGPUMCRegisterInfo);
156 TargetRegistry::RegisterMCSubtargetInfo(*T, createAMDGPUMCSubtargetInfo);
157 TargetRegistry::RegisterMCInstPrinter(*T, createAMDGPUMCInstPrinter);
158 TargetRegistry::RegisterMCInstrAnalysis(*T, createAMDGPUMCInstrAnalysis);
159 TargetRegistry::RegisterMCAsmBackend(*T, createAMDGPUAsmBackend);
160 TargetRegistry::RegisterELFStreamer(*T, createMCStreamer);
161 }
162
163 // R600 specific registration
164 TargetRegistry::RegisterMCCodeEmitter(getTheR600Target(),
165 createR600MCCodeEmitter);
166 TargetRegistry::RegisterObjectTargetStreamer(
167 getTheR600Target(), createAMDGPUObjectTargetStreamer);
168
169 // GCN specific registration
170 TargetRegistry::RegisterMCCodeEmitter(getTheGCNTarget(),
171 createAMDGPUMCCodeEmitter);
172
173 TargetRegistry::RegisterAsmTargetStreamer(getTheGCNTarget(),
174 createAMDGPUAsmTargetStreamer);
175 TargetRegistry::RegisterObjectTargetStreamer(
176 getTheGCNTarget(), createAMDGPUObjectTargetStreamer);
177 TargetRegistry::RegisterNullTargetStreamer(getTheGCNTarget(),
178 createAMDGPUNullTargetStreamer);
179 }
180