1//===-- PPC.h - Top-level interface for PowerPC Target ----------*- 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// This file contains the entry points for global functions defined in the LLVM
10// PowerPC back-end.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_LIB_TARGET_POWERPC_PPC_H
15#define LLVM_LIB_TARGET_POWERPC_PPC_H
16
17#include "llvm/Support/CodeGen.h"
18
19// GCC #defines PPC on Linux but we use it as our namespace name
20#undef PPC
21
22namespace llvm {
23class PPCRegisterBankInfo;
24class PPCSubtarget;
25class PPCTargetMachine;
26class PassRegistry;
27class FunctionPass;
28class InstructionSelector;
29class MachineInstr;
30class MachineOperand;
31class AsmPrinter;
32class MCInst;
33class MCOperand;
34class ModulePass;
35
36#ifndef NDEBUG
37 FunctionPass *createPPCCTRLoopsVerify();
38#endif
39 FunctionPass *createPPCLoopInstrFormPrepPass(PPCTargetMachine &TM);
40 FunctionPass *createPPCTOCRegDepsPass();
41 FunctionPass *createPPCEarlyReturnPass();
42 FunctionPass *createPPCVSXCopyPass();
43 FunctionPass *createPPCVSXFMAMutatePass();
44 FunctionPass *createPPCVSXSwapRemovalPass();
45 FunctionPass *createPPCReduceCRLogicalsPass();
46 FunctionPass *createPPCMIPeepholePass();
47 FunctionPass *createPPCBranchSelectionPass();
48 FunctionPass *createPPCBranchCoalescingPass();
49 FunctionPass *createPPCISelDag(PPCTargetMachine &TM, CodeGenOptLevel OL);
50 FunctionPass *createPPCTLSDynamicCallPass();
51 FunctionPass *createPPCBoolRetToIntPass();
52 FunctionPass *createPPCExpandISELPass();
53 FunctionPass *createPPCPreEmitPeepholePass();
54 FunctionPass *createPPCExpandAtomicPseudoPass();
55 FunctionPass *createPPCCTRLoopsPass();
56 void LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
57 AsmPrinter &AP);
58 bool LowerPPCMachineOperandToMCOperand(const MachineOperand &MO,
59 MCOperand &OutMO, AsmPrinter &AP);
60
61#ifndef NDEBUG
62 void initializePPCCTRLoopsVerifyPass(PassRegistry&);
63#endif
64 void initializePPCLoopInstrFormPrepPass(PassRegistry&);
65 void initializePPCTOCRegDepsPass(PassRegistry&);
66 void initializePPCEarlyReturnPass(PassRegistry&);
67 void initializePPCVSXCopyPass(PassRegistry&);
68 void initializePPCVSXFMAMutatePass(PassRegistry&);
69 void initializePPCVSXSwapRemovalPass(PassRegistry&);
70 void initializePPCReduceCRLogicalsPass(PassRegistry&);
71 void initializePPCBSelPass(PassRegistry&);
72 void initializePPCBranchCoalescingPass(PassRegistry&);
73 void initializePPCBoolRetToIntPass(PassRegistry&);
74 void initializePPCExpandISELPass(PassRegistry &);
75 void initializePPCPreEmitPeepholePass(PassRegistry &);
76 void initializePPCTLSDynamicCallPass(PassRegistry &);
77 void initializePPCMIPeepholePass(PassRegistry&);
78 void initializePPCExpandAtomicPseudoPass(PassRegistry &);
79 void initializePPCCTRLoopsPass(PassRegistry &);
80 void initializePPCDAGToDAGISelLegacyPass(PassRegistry &);
81 void initializePPCLinuxAsmPrinterPass(PassRegistry &);
82 void initializePPCAIXAsmPrinterPass(PassRegistry &);
83
84 extern char &PPCVSXFMAMutateID;
85
86 ModulePass *createPPCLowerMASSVEntriesPass();
87 void initializePPCLowerMASSVEntriesPass(PassRegistry &);
88 extern char &PPCLowerMASSVEntriesID;
89
90 ModulePass *createPPCGenScalarMASSEntriesPass();
91 void initializePPCGenScalarMASSEntriesPass(PassRegistry &);
92 extern char &PPCGenScalarMASSEntriesID;
93
94 InstructionSelector *
95 createPPCInstructionSelector(const PPCTargetMachine &, const PPCSubtarget &,
96 const PPCRegisterBankInfo &);
97 namespace PPCII {
98
99 /// Target Operand Flag enum.
100 enum TOF {
101 //===------------------------------------------------------------------===//
102 // PPC Specific MachineOperand flags.
103 MO_NO_FLAG,
104
105 /// On PPC, the 12 bits are not enough for all target operand flags.
106 /// Treat all PPC target flags as direct flags. To define new flag that is
107 /// combination of other flags, add new enum entry instead of combining
108 /// existing flags. See example MO_GOT_TPREL_PCREL_FLAG.
109
110 /// On a symbol operand "FOO", this indicates that the reference is actually
111 /// to "FOO@plt". This is used for calls and jumps to external functions
112 /// and for PIC calls on 32-bit ELF systems.
113 MO_PLT,
114
115 /// MO_PIC_FLAG - If this bit is set, the symbol reference is relative to
116 /// the function's picbase, e.g. lo16(symbol-picbase).
117 MO_PIC_FLAG,
118
119 /// MO_PCREL_FLAG - If this bit is set, the symbol reference is relative to
120 /// the current instruction address(pc), e.g., var@pcrel. Fixup is VK_PCREL.
121 MO_PCREL_FLAG,
122
123 /// MO_GOT_FLAG - If this bit is set the symbol reference is to be computed
124 /// via the GOT. For example when combined with the MO_PCREL_FLAG it should
125 /// produce the relocation @got@pcrel. Fixup is VK_GOT_PCREL.
126 MO_GOT_FLAG,
127
128 /// MO_PCREL_OPT_FLAG - If this bit is set the operand is part of a
129 /// PC Relative linker optimization.
130 MO_PCREL_OPT_FLAG,
131
132 /// MO_TLSGD_FLAG - If this bit is set the symbol reference is relative to
133 /// TLS General Dynamic model for Linux and the variable offset of TLS
134 /// General Dynamic model for AIX.
135 MO_TLSGD_FLAG,
136
137 /// MO_TPREL_FLAG - If this bit is set, the symbol reference is relative to
138 /// the thread pointer and the symbol can be used for the TLS Initial Exec
139 /// and Local Exec models.
140 MO_TPREL_FLAG,
141
142 /// MO_TLSLDM_FLAG - on AIX the ML relocation type is only valid for a
143 /// reference to a TOC symbol from the symbol itself, and right now its only
144 /// user is the symbol "_$TLSML". The symbol name is used to decide that
145 /// the R_TLSML relocation is expected.
146 MO_TLSLDM_FLAG,
147
148 /// MO_TLSLD_FLAG - If this bit is set the symbol reference is relative to
149 /// TLS Local Dynamic model.
150 MO_TLSLD_FLAG,
151
152 /// MO_TLSGDM_FLAG - If this bit is set the symbol reference is relative
153 /// to the region handle of TLS General Dynamic model for AIX.
154 MO_TLSGDM_FLAG,
155
156 /// MO_GOT_TLSGD_PCREL_FLAG - A combintaion of flags, if these bits are set
157 /// they should produce the relocation @got@tlsgd@pcrel.
158 /// Fix up is VK_GOT_TLSGD_PCREL
159 /// MO_GOT_TLSGD_PCREL_FLAG = MO_PCREL_FLAG | MO_GOT_FLAG | MO_TLSGD_FLAG,
160 MO_GOT_TLSGD_PCREL_FLAG,
161
162 /// MO_GOT_TLSLD_PCREL_FLAG - A combintaion of flags, if these bits are set
163 /// they should produce the relocation @got@tlsld@pcrel.
164 /// Fix up is VK_GOT_TLSLD_PCREL
165 /// MO_GOT_TLSLD_PCREL_FLAG = MO_PCREL_FLAG | MO_GOT_FLAG | MO_TLSLD_FLAG,
166 MO_GOT_TLSLD_PCREL_FLAG,
167
168 /// MO_GOT_TPREL_PCREL_FLAG - A combintaion of flags, if these bits are set
169 /// they should produce the relocation @got@tprel@pcrel.
170 /// Fix up is VK_GOT_TPREL_PCREL
171 /// MO_GOT_TPREL_PCREL_FLAG = MO_GOT_FLAG | MO_TPREL_FLAG | MO_PCREL_FLAG,
172 MO_GOT_TPREL_PCREL_FLAG,
173
174 /// MO_LO, MO_HA - lo16(symbol) and ha16(symbol)
175 MO_LO,
176 MO_HA,
177
178 MO_TPREL_LO,
179 MO_TPREL_HA,
180
181 /// These values identify relocations on immediates folded
182 /// into memory operations.
183 MO_DTPREL_LO,
184 MO_TLSLD_LO,
185 MO_TOC_LO,
186
187 /// Symbol for VK_TLS fixup attached to an ADD instruction
188 MO_TLS,
189
190 /// MO_PIC_HA_FLAG = MO_PIC_FLAG | MO_HA
191 MO_PIC_HA_FLAG,
192
193 /// MO_PIC_LO_FLAG = MO_PIC_FLAG | MO_LO
194 MO_PIC_LO_FLAG,
195
196 /// MO_TPREL_PCREL_FLAG = MO_PCREL_FLAG | MO_TPREL_FLAG
197 MO_TPREL_PCREL_FLAG,
198
199 /// MO_TPREL_PCREL_FLAG = MO_PCREL_FLAG | MO_TLS
200 MO_TLS_PCREL_FLAG,
201
202 /// MO_GOT_PCREL_FLAG = MO_PCREL_FLAG | MO_GOT_FLAG
203 MO_GOT_PCREL_FLAG,
204 };
205 } // end namespace PPCII
206
207} // end namespace llvm;
208
209#endif
210