lib/Target/Sparc/SparcRegisterInfo.td - llvm - Git at Google

 //===- SparcRegisterInfo.td - Sparc Register defs ----------*- tablegen -*-===//
 //
 //                     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 Sparc register file
 //===----------------------------------------------------------------------===//

 class SparcReg<string n> : Register<n> {
   field bits<5> Num;
   let Namespace = "SP";
 }

 // Registers are identified with 5-bit ID numbers.
 // Ri - 32-bit integer registers
 class Ri<bits<5> num, string n> : SparcReg<n> {
   let Num = num;
 }
 // Rf - 32-bit floating-point registers
 class Rf<bits<5> num, string n> : SparcReg<n> {
   let Num = num;
 }
 // Rd - Slots in the FP register file for 64-bit floating-point values.
 class Rd<bits<5> num, string n, list<Register> subregs> : SparcReg<n> {
   let Num = num;
   let SubRegs = subregs;
 }

 // Integer registers
 def G0 : Ri< 0, "G0">, DwarfRegNum<[0]>;
 def G1 : Ri< 1, "G1">, DwarfRegNum<[1]>;
 def G2 : Ri< 2, "G2">, DwarfRegNum<[2]>;
 def G3 : Ri< 3, "G3">, DwarfRegNum<[3]>;
 def G4 : Ri< 4, "G4">, DwarfRegNum<[4]>;
 def G5 : Ri< 5, "G5">, DwarfRegNum<[5]>;
 def G6 : Ri< 6, "G6">, DwarfRegNum<[6]>;
 def G7 : Ri< 7, "G7">, DwarfRegNum<[7]>;
 def O0 : Ri< 8, "O0">, DwarfRegNum<[8]>;
 def O1 : Ri< 9, "O1">, DwarfRegNum<[9]>;
 def O2 : Ri<10, "O2">, DwarfRegNum<[10]>;
 def O3 : Ri<11, "O3">, DwarfRegNum<[11]>;
 def O4 : Ri<12, "O4">, DwarfRegNum<[12]>;
 def O5 : Ri<13, "O5">, DwarfRegNum<[13]>;
 def O6 : Ri<14, "O6">, DwarfRegNum<[14]>;
 def O7 : Ri<15, "O7">, DwarfRegNum<[15]>;
 def L0 : Ri<16, "L0">, DwarfRegNum<[16]>;
 def L1 : Ri<17, "L1">, DwarfRegNum<[17]>;
 def L2 : Ri<18, "L2">, DwarfRegNum<[18]>;
 def L3 : Ri<19, "L3">, DwarfRegNum<[19]>;
 def L4 : Ri<20, "L4">, DwarfRegNum<[20]>;
 def L5 : Ri<21, "L5">, DwarfRegNum<[21]>;
 def L6 : Ri<22, "L6">, DwarfRegNum<[22]>;
 def L7 : Ri<23, "L7">, DwarfRegNum<[23]>;
 def I0 : Ri<24, "I0">, DwarfRegNum<[24]>;
 def I1 : Ri<25, "I1">, DwarfRegNum<[25]>;
 def I2 : Ri<26, "I2">, DwarfRegNum<[26]>;
 def I3 : Ri<27, "I3">, DwarfRegNum<[27]>;
 def I4 : Ri<28, "I4">, DwarfRegNum<[28]>;
 def I5 : Ri<29, "I5">, DwarfRegNum<[29]>;
 def I6 : Ri<30, "I6">, DwarfRegNum<[30]>;
 def I7 : Ri<31, "I7">, DwarfRegNum<[31]>;

 // Floating-point registers
 def F0  : Rf< 0,  "F0">, DwarfRegNum<[32]>;
 def F1  : Rf< 1,  "F1">, DwarfRegNum<[33]>;
 def F2  : Rf< 2,  "F2">, DwarfRegNum<[34]>;
 def F3  : Rf< 3,  "F3">, DwarfRegNum<[35]>;
 def F4  : Rf< 4,  "F4">, DwarfRegNum<[36]>;
 def F5  : Rf< 5,  "F5">, DwarfRegNum<[37]>;
 def F6  : Rf< 6,  "F6">, DwarfRegNum<[38]>;
 def F7  : Rf< 7,  "F7">, DwarfRegNum<[39]>;
 def F8  : Rf< 8,  "F8">, DwarfRegNum<[40]>;
 def F9  : Rf< 9,  "F9">, DwarfRegNum<[41]>;
 def F10 : Rf<10, "F10">, DwarfRegNum<[42]>;
 def F11 : Rf<11, "F11">, DwarfRegNum<[43]>;
 def F12 : Rf<12, "F12">, DwarfRegNum<[44]>;
 def F13 : Rf<13, "F13">, DwarfRegNum<[45]>;
 def F14 : Rf<14, "F14">, DwarfRegNum<[46]>;
 def F15 : Rf<15, "F15">, DwarfRegNum<[47]>;
 def F16 : Rf<16, "F16">, DwarfRegNum<[48]>;
 def F17 : Rf<17, "F17">, DwarfRegNum<[49]>;
 def F18 : Rf<18, "F18">, DwarfRegNum<[50]>;
 def F19 : Rf<19, "F19">, DwarfRegNum<[51]>;
 def F20 : Rf<20, "F20">, DwarfRegNum<[52]>;
 def F21 : Rf<21, "F21">, DwarfRegNum<[53]>;
 def F22 : Rf<22, "F22">, DwarfRegNum<[54]>;
 def F23 : Rf<23, "F23">, DwarfRegNum<[55]>;
 def F24 : Rf<24, "F24">, DwarfRegNum<[56]>;
 def F25 : Rf<25, "F25">, DwarfRegNum<[57]>;
 def F26 : Rf<26, "F26">, DwarfRegNum<[58]>;
 def F27 : Rf<27, "F27">, DwarfRegNum<[59]>;
 def F28 : Rf<28, "F28">, DwarfRegNum<[60]>;
 def F29 : Rf<29, "F29">, DwarfRegNum<[61]>;
 def F30 : Rf<30, "F30">, DwarfRegNum<[62]>;
 def F31 : Rf<31, "F31">, DwarfRegNum<[63]>;

 // Aliases of the F* registers used to hold 64-bit fp values (doubles)
 def D0  : Rd< 0,  "F0", [F0,   F1]>, DwarfRegNum<[32]>;
 def D1  : Rd< 2,  "F2", [F2,   F3]>, DwarfRegNum<[34]>;
 def D2  : Rd< 4,  "F4", [F4,   F5]>, DwarfRegNum<[36]>;
 def D3  : Rd< 6,  "F6", [F6,   F7]>, DwarfRegNum<[38]>;
 def D4  : Rd< 8,  "F8", [F8,   F9]>, DwarfRegNum<[40]>;
 def D5  : Rd<10, "F10", [F10, F11]>, DwarfRegNum<[42]>;
 def D6  : Rd<12, "F12", [F12, F13]>, DwarfRegNum<[44]>;
 def D7  : Rd<14, "F14", [F14, F15]>, DwarfRegNum<[46]>;
 def D8  : Rd<16, "F16", [F16, F17]>, DwarfRegNum<[48]>;
 def D9  : Rd<18, "F18", [F18, F19]>, DwarfRegNum<[50]>;
 def D10 : Rd<20, "F20", [F20, F21]>, DwarfRegNum<[52]>;
 def D11 : Rd<22, "F22", [F22, F23]>, DwarfRegNum<[54]>;
 def D12 : Rd<24, "F24", [F24, F25]>, DwarfRegNum<[56]>;
 def D13 : Rd<26, "F26", [F26, F27]>, DwarfRegNum<[58]>;
 def D14 : Rd<28, "F28", [F28, F29]>, DwarfRegNum<[60]>;
 def D15 : Rd<30, "F30", [F30, F31]>, DwarfRegNum<[62]>;

 // Register classes.
 //
 // FIXME: the register order should be defined in terms of the preferred
 // allocation order...
 //
 def IntRegs : RegisterClass<"SP", [i32], 32, [L0, L1, L2, L3, L4, L5, L6, L7,
                                      I0, I1, I2, I3, I4, I5,
                                      O0, O1, O2, O3, O4, O5, O7,

    // FIXME: G1 reserved for now for large imm generation by frame code.
                                      G1,
                                      // Non-allocatable regs:
                                      G2, G3, G4, // FIXME: OK for use only in
                                                  // applications, not libraries.
                                      O6, // stack ptr
                                      I6, // frame ptr
                                      I7, // return address
                                      G0, // constant zero
                                      G5, G6, G7 // reserved for kernel
                                      ]> {
   let MethodProtos = [{
     iterator allocation_order_end(const MachineFunction &MF) const;
   }];
   let MethodBodies = [{
     IntRegsClass::iterator
     IntRegsClass::allocation_order_end(const MachineFunction &MF) const {
       // FIXME: These special regs should be taken out of the regclass!
       return end()-10  // Don't allocate special registers
          -1;  // FIXME: G1 reserved for large imm generation by frame code.
     }
   }];
 }

 def FPRegs : RegisterClass<"SP", [f32], 32, [F0, F1, F2, F3, F4, F5, F6, F7, F8,
   F9, F10, F11, F12, F13, F14, F15, F16, F17, F18, F19, F20, F21, F22,
   F23, F24, F25, F26, F27, F28, F29, F30, F31]>;

 def DFPRegs : RegisterClass<"SP", [f64], 64, [D0, D1, D2, D3, D4, D5, D6, D7,
   D8, D9, D10, D11, D12, D13, D14, D15]>;
	//===- SparcRegisterInfo.td - Sparc Register defs ----------- tablegen --===//
	//
	// 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 Sparc register file
	//===----------------------------------------------------------------------===//

	class SparcReg<string n> : Register<n> {
	field bits<5> Num;
	let Namespace = "SP";
	}

	// Registers are identified with 5-bit ID numbers.
	// Ri - 32-bit integer registers
	class Ri<bits<5> num, string n> : SparcReg<n> {
	let Num = num;
	}
	// Rf - 32-bit floating-point registers
	class Rf<bits<5> num, string n> : SparcReg<n> {
	let Num = num;
	}
	// Rd - Slots in the FP register file for 64-bit floating-point values.
	class Rd<bits<5> num, string n, list<Register> subregs> : SparcReg<n> {
	let Num = num;
	let SubRegs = subregs;
	}

	// Integer registers
	def G0 : Ri< 0, "G0">, DwarfRegNum<[0]>;
	def G1 : Ri< 1, "G1">, DwarfRegNum<[1]>;
	def G2 : Ri< 2, "G2">, DwarfRegNum<[2]>;
	def G3 : Ri< 3, "G3">, DwarfRegNum<[3]>;
	def G4 : Ri< 4, "G4">, DwarfRegNum<[4]>;
	def G5 : Ri< 5, "G5">, DwarfRegNum<[5]>;
	def G6 : Ri< 6, "G6">, DwarfRegNum<[6]>;
	def G7 : Ri< 7, "G7">, DwarfRegNum<[7]>;
	def O0 : Ri< 8, "O0">, DwarfRegNum<[8]>;
	def O1 : Ri< 9, "O1">, DwarfRegNum<[9]>;
	def O2 : Ri<10, "O2">, DwarfRegNum<[10]>;
	def O3 : Ri<11, "O3">, DwarfRegNum<[11]>;
	def O4 : Ri<12, "O4">, DwarfRegNum<[12]>;
	def O5 : Ri<13, "O5">, DwarfRegNum<[13]>;
	def O6 : Ri<14, "O6">, DwarfRegNum<[14]>;
	def O7 : Ri<15, "O7">, DwarfRegNum<[15]>;
	def L0 : Ri<16, "L0">, DwarfRegNum<[16]>;
	def L1 : Ri<17, "L1">, DwarfRegNum<[17]>;
	def L2 : Ri<18, "L2">, DwarfRegNum<[18]>;
	def L3 : Ri<19, "L3">, DwarfRegNum<[19]>;
	def L4 : Ri<20, "L4">, DwarfRegNum<[20]>;
	def L5 : Ri<21, "L5">, DwarfRegNum<[21]>;
	def L6 : Ri<22, "L6">, DwarfRegNum<[22]>;
	def L7 : Ri<23, "L7">, DwarfRegNum<[23]>;
	def I0 : Ri<24, "I0">, DwarfRegNum<[24]>;
	def I1 : Ri<25, "I1">, DwarfRegNum<[25]>;
	def I2 : Ri<26, "I2">, DwarfRegNum<[26]>;
	def I3 : Ri<27, "I3">, DwarfRegNum<[27]>;
	def I4 : Ri<28, "I4">, DwarfRegNum<[28]>;
	def I5 : Ri<29, "I5">, DwarfRegNum<[29]>;
	def I6 : Ri<30, "I6">, DwarfRegNum<[30]>;
	def I7 : Ri<31, "I7">, DwarfRegNum<[31]>;

	// Floating-point registers
	def F0 : Rf< 0, "F0">, DwarfRegNum<[32]>;
	def F1 : Rf< 1, "F1">, DwarfRegNum<[33]>;
	def F2 : Rf< 2, "F2">, DwarfRegNum<[34]>;
	def F3 : Rf< 3, "F3">, DwarfRegNum<[35]>;
	def F4 : Rf< 4, "F4">, DwarfRegNum<[36]>;
	def F5 : Rf< 5, "F5">, DwarfRegNum<[37]>;
	def F6 : Rf< 6, "F6">, DwarfRegNum<[38]>;
	def F7 : Rf< 7, "F7">, DwarfRegNum<[39]>;
	def F8 : Rf< 8, "F8">, DwarfRegNum<[40]>;
	def F9 : Rf< 9, "F9">, DwarfRegNum<[41]>;
	def F10 : Rf<10, "F10">, DwarfRegNum<[42]>;
	def F11 : Rf<11, "F11">, DwarfRegNum<[43]>;
	def F12 : Rf<12, "F12">, DwarfRegNum<[44]>;
	def F13 : Rf<13, "F13">, DwarfRegNum<[45]>;
	def F14 : Rf<14, "F14">, DwarfRegNum<[46]>;
	def F15 : Rf<15, "F15">, DwarfRegNum<[47]>;
	def F16 : Rf<16, "F16">, DwarfRegNum<[48]>;
	def F17 : Rf<17, "F17">, DwarfRegNum<[49]>;
	def F18 : Rf<18, "F18">, DwarfRegNum<[50]>;
	def F19 : Rf<19, "F19">, DwarfRegNum<[51]>;
	def F20 : Rf<20, "F20">, DwarfRegNum<[52]>;
	def F21 : Rf<21, "F21">, DwarfRegNum<[53]>;
	def F22 : Rf<22, "F22">, DwarfRegNum<[54]>;
	def F23 : Rf<23, "F23">, DwarfRegNum<[55]>;
	def F24 : Rf<24, "F24">, DwarfRegNum<[56]>;
	def F25 : Rf<25, "F25">, DwarfRegNum<[57]>;
	def F26 : Rf<26, "F26">, DwarfRegNum<[58]>;
	def F27 : Rf<27, "F27">, DwarfRegNum<[59]>;
	def F28 : Rf<28, "F28">, DwarfRegNum<[60]>;
	def F29 : Rf<29, "F29">, DwarfRegNum<[61]>;
	def F30 : Rf<30, "F30">, DwarfRegNum<[62]>;
	def F31 : Rf<31, "F31">, DwarfRegNum<[63]>;

	// Aliases of the F* registers used to hold 64-bit fp values (doubles)
	def D0 : Rd< 0, "F0", [F0, F1]>, DwarfRegNum<[32]>;
	def D1 : Rd< 2, "F2", [F2, F3]>, DwarfRegNum<[34]>;
	def D2 : Rd< 4, "F4", [F4, F5]>, DwarfRegNum<[36]>;
	def D3 : Rd< 6, "F6", [F6, F7]>, DwarfRegNum<[38]>;
	def D4 : Rd< 8, "F8", [F8, F9]>, DwarfRegNum<[40]>;
	def D5 : Rd<10, "F10", [F10, F11]>, DwarfRegNum<[42]>;
	def D6 : Rd<12, "F12", [F12, F13]>, DwarfRegNum<[44]>;
	def D7 : Rd<14, "F14", [F14, F15]>, DwarfRegNum<[46]>;
	def D8 : Rd<16, "F16", [F16, F17]>, DwarfRegNum<[48]>;
	def D9 : Rd<18, "F18", [F18, F19]>, DwarfRegNum<[50]>;
	def D10 : Rd<20, "F20", [F20, F21]>, DwarfRegNum<[52]>;
	def D11 : Rd<22, "F22", [F22, F23]>, DwarfRegNum<[54]>;
	def D12 : Rd<24, "F24", [F24, F25]>, DwarfRegNum<[56]>;
	def D13 : Rd<26, "F26", [F26, F27]>, DwarfRegNum<[58]>;
	def D14 : Rd<28, "F28", [F28, F29]>, DwarfRegNum<[60]>;
	def D15 : Rd<30, "F30", [F30, F31]>, DwarfRegNum<[62]>;

	// Register classes.
	//
	// FIXME: the register order should be defined in terms of the preferred
	// allocation order...
	//
	def IntRegs : RegisterClass<"SP", [i32], 32, [L0, L1, L2, L3, L4, L5, L6, L7,
	I0, I1, I2, I3, I4, I5,
	O0, O1, O2, O3, O4, O5, O7,

	// FIXME: G1 reserved for now for large imm generation by frame code.
	G1,
	// Non-allocatable regs:
	G2, G3, G4, // FIXME: OK for use only in
	// applications, not libraries.
	O6, // stack ptr
	I6, // frame ptr
	I7, // return address
	G0, // constant zero
	G5, G6, G7 // reserved for kernel
	]> {
	let MethodProtos = [{
	iterator allocation_order_end(const MachineFunction &MF) const;
	}];
	let MethodBodies = [{
	IntRegsClass::iterator
	IntRegsClass::allocation_order_end(const MachineFunction &MF) const {
	// FIXME: These special regs should be taken out of the regclass!
	return end()-10 // Don't allocate special registers
	-1; // FIXME: G1 reserved for large imm generation by frame code.
	}
	}];
	}

	def FPRegs : RegisterClass<"SP", [f32], 32, [F0, F1, F2, F3, F4, F5, F6, F7, F8,
	F9, F10, F11, F12, F13, F14, F15, F16, F17, F18, F19, F20, F21, F22,
	F23, F24, F25, F26, F27, F28, F29, F30, F31]>;

	def DFPRegs : RegisterClass<"SP", [f64], 64, [D0, D1, D2, D3, D4, D5, D6, D7,
	D8, D9, D10, D11, D12, D13, D14, D15]>;