MipsRegisterInfo.td revision 199511
1//===- MipsRegisterInfo.td - Mips Register defs -----------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10//===----------------------------------------------------------------------===// 11// Declarations that describe the MIPS register file 12//===----------------------------------------------------------------------===// 13 14// We have banks of 32 registers each. 15class MipsReg<string n> : Register<n> { 16 field bits<5> Num; 17 let Namespace = "Mips"; 18} 19 20class MipsRegWithSubRegs<string n, list<Register> subregs> 21 : RegisterWithSubRegs<n, subregs> { 22 field bits<5> Num; 23 let Namespace = "Mips"; 24} 25 26// Mips CPU Registers 27class MipsGPRReg<bits<5> num, string n> : MipsReg<n> { 28 let Num = num; 29} 30 31// Mips 32-bit FPU Registers 32class FPR<bits<5> num, string n> : MipsReg<n> { 33 let Num = num; 34} 35 36// Mips 64-bit (aliased) FPU Registers 37class AFPR<bits<5> num, string n, list<Register> subregs> 38 : MipsRegWithSubRegs<n, subregs> { 39 let Num = num; 40} 41 42//===----------------------------------------------------------------------===// 43// Registers 44//===----------------------------------------------------------------------===// 45 46let Namespace = "Mips" in { 47 48 // General Purpose Registers 49 def ZERO : MipsGPRReg< 0, "ZERO">, DwarfRegNum<[0]>; 50 def AT : MipsGPRReg< 1, "AT">, DwarfRegNum<[1]>; 51 def V0 : MipsGPRReg< 2, "2">, DwarfRegNum<[2]>; 52 def V1 : MipsGPRReg< 3, "3">, DwarfRegNum<[3]>; 53 def A0 : MipsGPRReg< 4, "4">, DwarfRegNum<[5]>; 54 def A1 : MipsGPRReg< 5, "5">, DwarfRegNum<[5]>; 55 def A2 : MipsGPRReg< 6, "6">, DwarfRegNum<[6]>; 56 def A3 : MipsGPRReg< 7, "7">, DwarfRegNum<[7]>; 57 def T0 : MipsGPRReg< 8, "8">, DwarfRegNum<[8]>; 58 def T1 : MipsGPRReg< 9, "9">, DwarfRegNum<[9]>; 59 def T2 : MipsGPRReg< 10, "10">, DwarfRegNum<[10]>; 60 def T3 : MipsGPRReg< 11, "11">, DwarfRegNum<[11]>; 61 def T4 : MipsGPRReg< 12, "12">, DwarfRegNum<[12]>; 62 def T5 : MipsGPRReg< 13, "13">, DwarfRegNum<[13]>; 63 def T6 : MipsGPRReg< 14, "14">, DwarfRegNum<[14]>; 64 def T7 : MipsGPRReg< 15, "15">, DwarfRegNum<[15]>; 65 def S0 : MipsGPRReg< 16, "16">, DwarfRegNum<[16]>; 66 def S1 : MipsGPRReg< 17, "17">, DwarfRegNum<[17]>; 67 def S2 : MipsGPRReg< 18, "18">, DwarfRegNum<[18]>; 68 def S3 : MipsGPRReg< 19, "19">, DwarfRegNum<[19]>; 69 def S4 : MipsGPRReg< 20, "20">, DwarfRegNum<[20]>; 70 def S5 : MipsGPRReg< 21, "21">, DwarfRegNum<[21]>; 71 def S6 : MipsGPRReg< 22, "22">, DwarfRegNum<[22]>; 72 def S7 : MipsGPRReg< 23, "23">, DwarfRegNum<[23]>; 73 def T8 : MipsGPRReg< 24, "24">, DwarfRegNum<[24]>; 74 def T9 : MipsGPRReg< 25, "25">, DwarfRegNum<[25]>; 75 def K0 : MipsGPRReg< 26, "26">, DwarfRegNum<[26]>; 76 def K1 : MipsGPRReg< 27, "27">, DwarfRegNum<[27]>; 77 def GP : MipsGPRReg< 28, "GP">, DwarfRegNum<[28]>; 78 def SP : MipsGPRReg< 29, "SP">, DwarfRegNum<[29]>; 79 def FP : MipsGPRReg< 30, "FP">, DwarfRegNum<[30]>; 80 def RA : MipsGPRReg< 31, "RA">, DwarfRegNum<[31]>; 81 82 /// Mips Single point precision FPU Registers 83 def F0 : FPR< 0, "F0">, DwarfRegNum<[32]>; 84 def F1 : FPR< 1, "F1">, DwarfRegNum<[33]>; 85 def F2 : FPR< 2, "F2">, DwarfRegNum<[34]>; 86 def F3 : FPR< 3, "F3">, DwarfRegNum<[35]>; 87 def F4 : FPR< 4, "F4">, DwarfRegNum<[36]>; 88 def F5 : FPR< 5, "F5">, DwarfRegNum<[37]>; 89 def F6 : FPR< 6, "F6">, DwarfRegNum<[38]>; 90 def F7 : FPR< 7, "F7">, DwarfRegNum<[39]>; 91 def F8 : FPR< 8, "F8">, DwarfRegNum<[40]>; 92 def F9 : FPR< 9, "F9">, DwarfRegNum<[41]>; 93 def F10 : FPR<10, "F10">, DwarfRegNum<[42]>; 94 def F11 : FPR<11, "F11">, DwarfRegNum<[43]>; 95 def F12 : FPR<12, "F12">, DwarfRegNum<[44]>; 96 def F13 : FPR<13, "F13">, DwarfRegNum<[45]>; 97 def F14 : FPR<14, "F14">, DwarfRegNum<[46]>; 98 def F15 : FPR<15, "F15">, DwarfRegNum<[47]>; 99 def F16 : FPR<16, "F16">, DwarfRegNum<[48]>; 100 def F17 : FPR<17, "F17">, DwarfRegNum<[49]>; 101 def F18 : FPR<18, "F18">, DwarfRegNum<[50]>; 102 def F19 : FPR<19, "F19">, DwarfRegNum<[51]>; 103 def F20 : FPR<20, "F20">, DwarfRegNum<[52]>; 104 def F21 : FPR<21, "F21">, DwarfRegNum<[53]>; 105 def F22 : FPR<22, "F22">, DwarfRegNum<[54]>; 106 def F23 : FPR<23, "F23">, DwarfRegNum<[55]>; 107 def F24 : FPR<24, "F24">, DwarfRegNum<[56]>; 108 def F25 : FPR<25, "F25">, DwarfRegNum<[57]>; 109 def F26 : FPR<26, "F26">, DwarfRegNum<[58]>; 110 def F27 : FPR<27, "F27">, DwarfRegNum<[59]>; 111 def F28 : FPR<28, "F28">, DwarfRegNum<[60]>; 112 def F29 : FPR<29, "F29">, DwarfRegNum<[61]>; 113 def F30 : FPR<30, "F30">, DwarfRegNum<[62]>; 114 def F31 : FPR<31, "F31">, DwarfRegNum<[63]>; 115 116 /// Mips Double point precision FPU Registers (aliased 117 /// with the single precision to hold 64 bit values) 118 def D0 : AFPR< 0, "F0", [F0, F1]>, DwarfRegNum<[32]>; 119 def D1 : AFPR< 2, "F2", [F2, F3]>, DwarfRegNum<[34]>; 120 def D2 : AFPR< 4, "F4", [F4, F5]>, DwarfRegNum<[36]>; 121 def D3 : AFPR< 6, "F6", [F6, F7]>, DwarfRegNum<[38]>; 122 def D4 : AFPR< 8, "F8", [F8, F9]>, DwarfRegNum<[40]>; 123 def D5 : AFPR<10, "F10", [F10, F11]>, DwarfRegNum<[42]>; 124 def D6 : AFPR<12, "F12", [F12, F13]>, DwarfRegNum<[44]>; 125 def D7 : AFPR<14, "F14", [F14, F15]>, DwarfRegNum<[46]>; 126 def D8 : AFPR<16, "F16", [F16, F17]>, DwarfRegNum<[48]>; 127 def D9 : AFPR<18, "F18", [F18, F19]>, DwarfRegNum<[50]>; 128 def D10 : AFPR<20, "F20", [F20, F21]>, DwarfRegNum<[52]>; 129 def D11 : AFPR<22, "F22", [F22, F23]>, DwarfRegNum<[54]>; 130 def D12 : AFPR<24, "F24", [F24, F25]>, DwarfRegNum<[56]>; 131 def D13 : AFPR<26, "F26", [F26, F27]>, DwarfRegNum<[58]>; 132 def D14 : AFPR<28, "F28", [F28, F29]>, DwarfRegNum<[60]>; 133 def D15 : AFPR<30, "F30", [F30, F31]>, DwarfRegNum<[62]>; 134 135 // Hi/Lo registers 136 def HI : Register<"hi">, DwarfRegNum<[64]>; 137 def LO : Register<"lo">, DwarfRegNum<[65]>; 138 139 // Status flags register 140 def FCR31 : Register<"31">; 141} 142 143//===----------------------------------------------------------------------===// 144// Subregister Set Definitions 145//===----------------------------------------------------------------------===// 146 147def mips_subreg_fpeven : PatLeaf<(i32 1)>; 148def mips_subreg_fpodd : PatLeaf<(i32 2)>; 149 150def : SubRegSet<1, [D0, D1, D2, D3, D4, D5, D6, D7, 151 D8, D9, D10, D11, D12, D13, D14, D15], 152 [F0, F2, F4, F6, F8, F10, F12, F14, 153 F16, F18, F20, F22, F24, F26, F28, F30]>; 154 155def : SubRegSet<2, [D0, D1, D2, D3, D4, D5, D6, D7, 156 D8, D9, D10, D11, D12, D13, D14, D15], 157 [F1, F3, F5, F7, F9, F11, F13, F15, 158 F17, F19, F21, F23, F25, F27, F29, F31]>; 159 160//===----------------------------------------------------------------------===// 161// Register Classes 162//===----------------------------------------------------------------------===// 163 164def CPURegs : RegisterClass<"Mips", [i32], 32, 165 // Return Values and Arguments 166 [V0, V1, A0, A1, A2, A3, 167 // Not preserved across procedure calls 168 T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, 169 // Callee save 170 S0, S1, S2, S3, S4, S5, S6, S7, 171 // Reserved 172 ZERO, AT, K0, K1, GP, SP, FP, RA]> 173{ 174 let MethodProtos = [{ 175 iterator allocation_order_end(const MachineFunction &MF) const; 176 }]; 177 let MethodBodies = [{ 178 CPURegsClass::iterator 179 CPURegsClass::allocation_order_end(const MachineFunction &MF) const { 180 // The last 8 registers on the list above are reserved 181 return end()-8; 182 } 183 }]; 184} 185 186// 64bit fp: 187// * FGR64 - 32 64-bit registers 188// * AFGR64 - 16 32-bit even registers (32-bit FP Mode) 189// 190// 32bit fp: 191// * FGR32 - 16 32-bit even registers 192// * FGR32 - 32 32-bit registers (single float only mode) 193def FGR32 : RegisterClass<"Mips", [f32], 32, 194 // Return Values and Arguments 195 [F0, F1, F2, F3, F12, F13, F14, F15, 196 // Not preserved across procedure calls 197 F4, F5, F6, F7, F8, F9, F10, F11, F16, F17, F18, F19, 198 // Callee save 199 F20, F21, F22, F23, F24, F25, F26, F27, F28, F29, F30, 200 // Reserved 201 F31]> 202{ 203 let MethodProtos = [{ 204 iterator allocation_order_begin(const MachineFunction &MF) const; 205 iterator allocation_order_end(const MachineFunction &MF) const; 206 }]; 207 let MethodBodies = [{ 208 209 static const unsigned MIPS_FGR32[] = { 210 Mips::F0, Mips::F1, Mips::F2, Mips::F3, Mips::F12, Mips::F13, 211 Mips::F14, Mips::F15, Mips::F4, Mips::F5, Mips::F6, Mips::F7, 212 Mips::F8, Mips::F9, Mips::F10, Mips::F11, Mips::F16, Mips::F17, 213 Mips::F18, Mips::F19, Mips::F20, Mips::F21, Mips::F22, Mips::F23, 214 Mips::F24, Mips::F25, Mips::F26, Mips::F27, Mips::F28, Mips::F29, 215 Mips::F30 216 }; 217 218 static const unsigned MIPS_SVR4_FGR32[] = { 219 Mips::F0, Mips::F2, Mips::F12, Mips::F14, Mips::F4, 220 Mips::F6, Mips::F8, Mips::F10, Mips::F16, Mips::F18, 221 Mips::F20, Mips::F22, Mips::F24, Mips::F26, Mips::F28, Mips::F30, 222 }; 223 224 FGR32Class::iterator 225 FGR32Class::allocation_order_begin(const MachineFunction &MF) const { 226 const TargetMachine &TM = MF.getTarget(); 227 const MipsSubtarget &Subtarget = TM.getSubtarget<MipsSubtarget>(); 228 229 if (Subtarget.isSingleFloat()) 230 return MIPS_FGR32; 231 else 232 return MIPS_SVR4_FGR32; 233 } 234 235 FGR32Class::iterator 236 FGR32Class::allocation_order_end(const MachineFunction &MF) const { 237 const TargetMachine &TM = MF.getTarget(); 238 const MipsSubtarget &Subtarget = TM.getSubtarget<MipsSubtarget>(); 239 240 if (Subtarget.isSingleFloat()) 241 return MIPS_FGR32 + (sizeof(MIPS_FGR32) / sizeof(unsigned)); 242 else 243 return MIPS_SVR4_FGR32 + (sizeof(MIPS_SVR4_FGR32) / sizeof(unsigned)); 244 } 245 }]; 246} 247 248def AFGR64 : RegisterClass<"Mips", [f64], 64, 249 // Return Values and Arguments 250 [D0, D1, D6, D7, 251 // Not preserved across procedure calls 252 D2, D3, D4, D5, D8, D9, 253 // Callee save 254 D10, D11, D12, D13, D14, 255 // Reserved 256 D15]> 257{ 258 let SubRegClassList = [FGR32, FGR32]; 259 let MethodProtos = [{ 260 iterator allocation_order_end(const MachineFunction &MF) const; 261 }]; 262 let MethodBodies = [{ 263 AFGR64Class::iterator 264 AFGR64Class::allocation_order_end(const MachineFunction &MF) const { 265 // The last register on the list above is reserved 266 return end()-1; 267 } 268 }]; 269} 270 271// Condition Register for floating point operations 272def CCR : RegisterClass<"Mips", [i32], 32, [FCR31]>; 273 274// Hi/Lo Registers 275def HILO : RegisterClass<"Mips", [i32], 32, [HI, LO]>; 276 277