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//===- MipsRegisterInfo.td - Mips Register defs -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// Declarations that describe the MIPS register file
//===----------------------------------------------------------------------===//
// We have banks of 32 registers each.
class MipsReg<string n> : Register<n> {
field bits<5> Num;
let Namespace = "Mips";
}
class MipsRegWithSubRegs<string n, list<Register> subregs>
: RegisterWithSubRegs<n, subregs> {
field bits<5> Num;
let Namespace = "Mips";
}
// Mips CPU Registers
class MipsGPRReg<bits<5> num, string n> : MipsReg<n> {
let Num = num;
}
// Mips 32-bit FPU Registers
class FPR<bits<5> num, string n> : MipsReg<n> {
let Num = num;
}
// Mips 64-bit (aliased) FPU Registers
class AFPR<bits<5> num, string n, list<Register> subregs>
: MipsRegWithSubRegs<n, subregs> {
let Num = num;
}
//===----------------------------------------------------------------------===//
// Registers
//===----------------------------------------------------------------------===//
let Namespace = "Mips" in {
// General Purpose Registers
def ZERO : MipsGPRReg< 0, "ZERO">, DwarfRegNum<[0]>;
def AT : MipsGPRReg< 1, "AT">, DwarfRegNum<[1]>;
def V0 : MipsGPRReg< 2, "2">, DwarfRegNum<[2]>;
def V1 : MipsGPRReg< 3, "3">, DwarfRegNum<[3]>;
def A0 : MipsGPRReg< 4, "4">, DwarfRegNum<[5]>;
def A1 : MipsGPRReg< 5, "5">, DwarfRegNum<[5]>;
def A2 : MipsGPRReg< 6, "6">, DwarfRegNum<[6]>;
def A3 : MipsGPRReg< 7, "7">, DwarfRegNum<[7]>;
def T0 : MipsGPRReg< 8, "8">, DwarfRegNum<[8]>;
def T1 : MipsGPRReg< 9, "9">, DwarfRegNum<[9]>;
def T2 : MipsGPRReg< 10, "10">, DwarfRegNum<[10]>;
def T3 : MipsGPRReg< 11, "11">, DwarfRegNum<[11]>;
def T4 : MipsGPRReg< 12, "12">, DwarfRegNum<[12]>;
def T5 : MipsGPRReg< 13, "13">, DwarfRegNum<[13]>;
def T6 : MipsGPRReg< 14, "14">, DwarfRegNum<[14]>;
def T7 : MipsGPRReg< 15, "15">, DwarfRegNum<[15]>;
def S0 : MipsGPRReg< 16, "16">, DwarfRegNum<[16]>;
def S1 : MipsGPRReg< 17, "17">, DwarfRegNum<[17]>;
def S2 : MipsGPRReg< 18, "18">, DwarfRegNum<[18]>;
def S3 : MipsGPRReg< 19, "19">, DwarfRegNum<[19]>;
def S4 : MipsGPRReg< 20, "20">, DwarfRegNum<[20]>;
def S5 : MipsGPRReg< 21, "21">, DwarfRegNum<[21]>;
def S6 : MipsGPRReg< 22, "22">, DwarfRegNum<[22]>;
def S7 : MipsGPRReg< 23, "23">, DwarfRegNum<[23]>;
def T8 : MipsGPRReg< 24, "24">, DwarfRegNum<[24]>;
def T9 : MipsGPRReg< 25, "25">, DwarfRegNum<[25]>;
def K0 : MipsGPRReg< 26, "26">, DwarfRegNum<[26]>;
def K1 : MipsGPRReg< 27, "27">, DwarfRegNum<[27]>;
def GP : MipsGPRReg< 28, "GP">, DwarfRegNum<[28]>;
def SP : MipsGPRReg< 29, "SP">, DwarfRegNum<[29]>;
def FP : MipsGPRReg< 30, "FP">, DwarfRegNum<[30]>;
def RA : MipsGPRReg< 31, "RA">, DwarfRegNum<[31]>;
/// Mips Single point precision FPU Registers
def F0 : FPR< 0, "F0">, DwarfRegNum<[32]>;
def F1 : FPR< 1, "F1">, DwarfRegNum<[33]>;
def F2 : FPR< 2, "F2">, DwarfRegNum<[34]>;
def F3 : FPR< 3, "F3">, DwarfRegNum<[35]>;
def F4 : FPR< 4, "F4">, DwarfRegNum<[36]>;
def F5 : FPR< 5, "F5">, DwarfRegNum<[37]>;
def F6 : FPR< 6, "F6">, DwarfRegNum<[38]>;
def F7 : FPR< 7, "F7">, DwarfRegNum<[39]>;
def F8 : FPR< 8, "F8">, DwarfRegNum<[40]>;
def F9 : FPR< 9, "F9">, DwarfRegNum<[41]>;
def F10 : FPR<10, "F10">, DwarfRegNum<[42]>;
def F11 : FPR<11, "F11">, DwarfRegNum<[43]>;
def F12 : FPR<12, "F12">, DwarfRegNum<[44]>;
def F13 : FPR<13, "F13">, DwarfRegNum<[45]>;
def F14 : FPR<14, "F14">, DwarfRegNum<[46]>;
def F15 : FPR<15, "F15">, DwarfRegNum<[47]>;
def F16 : FPR<16, "F16">, DwarfRegNum<[48]>;
def F17 : FPR<17, "F17">, DwarfRegNum<[49]>;
def F18 : FPR<18, "F18">, DwarfRegNum<[50]>;
def F19 : FPR<19, "F19">, DwarfRegNum<[51]>;
def F20 : FPR<20, "F20">, DwarfRegNum<[52]>;
def F21 : FPR<21, "F21">, DwarfRegNum<[53]>;
def F22 : FPR<22, "F22">, DwarfRegNum<[54]>;
def F23 : FPR<23, "F23">, DwarfRegNum<[55]>;
def F24 : FPR<24, "F24">, DwarfRegNum<[56]>;
def F25 : FPR<25, "F25">, DwarfRegNum<[57]>;
def F26 : FPR<26, "F26">, DwarfRegNum<[58]>;
def F27 : FPR<27, "F27">, DwarfRegNum<[59]>;
def F28 : FPR<28, "F28">, DwarfRegNum<[60]>;
def F29 : FPR<29, "F29">, DwarfRegNum<[61]>;
def F30 : FPR<30, "F30">, DwarfRegNum<[62]>;
def F31 : FPR<31, "F31">, DwarfRegNum<[63]>;
/// Mips Double point precision FPU Registers (aliased
/// with the single precision to hold 64 bit values)
def D0 : AFPR< 0, "F0", [F0, F1]>, DwarfRegNum<[32]>;
def D1 : AFPR< 2, "F2", [F2, F3]>, DwarfRegNum<[34]>;
def D2 : AFPR< 4, "F4", [F4, F5]>, DwarfRegNum<[36]>;
def D3 : AFPR< 6, "F6", [F6, F7]>, DwarfRegNum<[38]>;
def D4 : AFPR< 8, "F8", [F8, F9]>, DwarfRegNum<[40]>;
def D5 : AFPR<10, "F10", [F10, F11]>, DwarfRegNum<[42]>;
def D6 : AFPR<12, "F12", [F12, F13]>, DwarfRegNum<[44]>;
def D7 : AFPR<14, "F14", [F14, F15]>, DwarfRegNum<[46]>;
def D8 : AFPR<16, "F16", [F16, F17]>, DwarfRegNum<[48]>;
def D9 : AFPR<18, "F18", [F18, F19]>, DwarfRegNum<[50]>;
def D10 : AFPR<20, "F20", [F20, F21]>, DwarfRegNum<[52]>;
def D11 : AFPR<22, "F22", [F22, F23]>, DwarfRegNum<[54]>;
def D12 : AFPR<24, "F24", [F24, F25]>, DwarfRegNum<[56]>;
def D13 : AFPR<26, "F26", [F26, F27]>, DwarfRegNum<[58]>;
def D14 : AFPR<28, "F28", [F28, F29]>, DwarfRegNum<[60]>;
def D15 : AFPR<30, "F30", [F30, F31]>, DwarfRegNum<[62]>;
// Hi/Lo registers
def HI : Register<"hi">, DwarfRegNum<[64]>;
def LO : Register<"lo">, DwarfRegNum<[65]>;
// Status flags register
def FCR31 : Register<"31">;
}
//===----------------------------------------------------------------------===//
// Subregister Set Definitions
//===----------------------------------------------------------------------===//
def mips_subreg_fpeven : PatLeaf<(i32 1)>;
def mips_subreg_fpodd : PatLeaf<(i32 2)>;
def : SubRegSet<1, [D0, D1, D2, D3, D4, D5, D6, D7,
D8, D9, D10, D11, D12, D13, D14, D15],
[F0, F2, F4, F6, F8, F10, F12, F14,
F16, F18, F20, F22, F24, F26, F28, F30]>;
def : SubRegSet<2, [D0, D1, D2, D3, D4, D5, D6, D7,
D8, D9, D10, D11, D12, D13, D14, D15],
[F1, F3, F5, F7, F9, F11, F13, F15,
F17, F19, F21, F23, F25, F27, F29, F31]>;
//===----------------------------------------------------------------------===//
// Register Classes
//===----------------------------------------------------------------------===//
def CPURegs : RegisterClass<"Mips", [i32], 32,
// Return Values and Arguments
[V0, V1, A0, A1, A2, A3,
// Not preserved across procedure calls
T0, T1, T2, T3, T4, T5, T6, T7, T8, T9,
// Callee save
S0, S1, S2, S3, S4, S5, S6, S7,
// Reserved
ZERO, AT, K0, K1, GP, SP, FP, RA]>
{
let MethodProtos = [{
iterator allocation_order_end(const MachineFunction &MF) const;
}];
let MethodBodies = [{
CPURegsClass::iterator
CPURegsClass::allocation_order_end(const MachineFunction &MF) const {
// The last 8 registers on the list above are reserved
return end()-8;
}
}];
}
// 64bit fp:
// * FGR64 - 32 64-bit registers
// * AFGR64 - 16 32-bit even registers (32-bit FP Mode)
//
// 32bit fp:
// * FGR32 - 16 32-bit even registers
// * FGR32 - 32 32-bit registers (single float only mode)
def FGR32 : RegisterClass<"Mips", [f32], 32,
// Return Values and Arguments
[F0, F1, F2, F3, F12, F13, F14, F15,
// Not preserved across procedure calls
F4, F5, F6, F7, F8, F9, F10, F11, F16, F17, F18, F19,
// Callee save
F20, F21, F22, F23, F24, F25, F26, F27, F28, F29, F30,
// Reserved
F31]>
{
let MethodProtos = [{
iterator allocation_order_begin(const MachineFunction &MF) const;
iterator allocation_order_end(const MachineFunction &MF) const;
}];
let MethodBodies = [{
static const unsigned MIPS_FGR32[] = {
Mips::F0, Mips::F1, Mips::F2, Mips::F3, Mips::F12, Mips::F13,
Mips::F14, Mips::F15, Mips::F4, Mips::F5, Mips::F6, Mips::F7,
Mips::F8, Mips::F9, Mips::F10, Mips::F11, Mips::F16, Mips::F17,
Mips::F18, Mips::F19, Mips::F20, Mips::F21, Mips::F22, Mips::F23,
Mips::F24, Mips::F25, Mips::F26, Mips::F27, Mips::F28, Mips::F29,
Mips::F30
};
static const unsigned MIPS_SVR4_FGR32[] = {
Mips::F0, Mips::F2, Mips::F12, Mips::F14, Mips::F4,
Mips::F6, Mips::F8, Mips::F10, Mips::F16, Mips::F18,
Mips::F20, Mips::F22, Mips::F24, Mips::F26, Mips::F28, Mips::F30,
};
FGR32Class::iterator
FGR32Class::allocation_order_begin(const MachineFunction &MF) const {
const TargetMachine &TM = MF.getTarget();
const MipsSubtarget &Subtarget = TM.getSubtarget<MipsSubtarget>();
if (Subtarget.isSingleFloat())
return MIPS_FGR32;
else
return MIPS_SVR4_FGR32;
}
FGR32Class::iterator
FGR32Class::allocation_order_end(const MachineFunction &MF) const {
const TargetMachine &TM = MF.getTarget();
const MipsSubtarget &Subtarget = TM.getSubtarget<MipsSubtarget>();
if (Subtarget.isSingleFloat())
return MIPS_FGR32 + (sizeof(MIPS_FGR32) / sizeof(unsigned));
else
return MIPS_SVR4_FGR32 + (sizeof(MIPS_SVR4_FGR32) / sizeof(unsigned));
}
}];
}
def AFGR64 : RegisterClass<"Mips", [f64], 64,
// Return Values and Arguments
[D0, D1, D6, D7,
// Not preserved across procedure calls
D2, D3, D4, D5, D8, D9,
// Callee save
D10, D11, D12, D13, D14,
// Reserved
D15]>
{
let SubRegClassList = [FGR32, FGR32];
let MethodProtos = [{
iterator allocation_order_end(const MachineFunction &MF) const;
}];
let MethodBodies = [{
AFGR64Class::iterator
AFGR64Class::allocation_order_end(const MachineFunction &MF) const {
// The last register on the list above is reserved
return end()-1;
}
}];
}
// Condition Register for floating point operations
def CCR : RegisterClass<"Mips", [i32], 32, [FCR31]>;
// Hi/Lo Registers
def HILO : RegisterClass<"Mips", [i32], 32, [HI, LO]>;
|
