- // In the register alias definitions below, we define which registers alias
- // which others. We only specify which registers the small registers alias,
- // because the register file generator is smart enough to figure out that
- // AL aliases AX if we tell it that AX aliased AL (for example).
-
- // Dwarf numbering is different for 32-bit and 64-bit, and there are
- // variations by target as well. Currently the first entry is for X86-64,
- // second - for EH on X86-32/Darwin and third is 'generic' one (X86-32/Linux
- // and debug information on X86-32/Darwin)
-
- // 8-bit registers
- // Low registers
- def AL : Register<"al">, DwarfRegNum<[0, 0, 0]>;
- def DL : Register<"dl">, DwarfRegNum<[1, 2, 2]>;
- def CL : Register<"cl">, DwarfRegNum<[2, 1, 1]>;
- def BL : Register<"bl">, DwarfRegNum<[3, 3, 3]>;
-
- // X86-64 only
- def SIL : Register<"sil">, DwarfRegNum<[4, 6, 6]>;
- def DIL : Register<"dil">, DwarfRegNum<[5, 7, 7]>;
- def BPL : Register<"bpl">, DwarfRegNum<[6, 4, 5]>;
- def SPL : Register<"spl">, DwarfRegNum<[7, 5, 4]>;
- def R8B : Register<"r8b">, DwarfRegNum<[8, -2, -2]>;
- def R9B : Register<"r9b">, DwarfRegNum<[9, -2, -2]>;
- def R10B : Register<"r10b">, DwarfRegNum<[10, -2, -2]>;
- def R11B : Register<"r11b">, DwarfRegNum<[11, -2, -2]>;
- def R12B : Register<"r12b">, DwarfRegNum<[12, -2, -2]>;
- def R13B : Register<"r13b">, DwarfRegNum<[13, -2, -2]>;
- def R14B : Register<"r14b">, DwarfRegNum<[14, -2, -2]>;
- def R15B : Register<"r15b">, DwarfRegNum<[15, -2, -2]>;
-
- // High registers X86-32 only
- def AH : Register<"ah">, DwarfRegNum<[0, 0, 0]>;
- def DH : Register<"dh">, DwarfRegNum<[1, 2, 2]>;
- def CH : Register<"ch">, DwarfRegNum<[2, 1, 1]>;
- def BH : Register<"bh">, DwarfRegNum<[3, 3, 3]>;
-
- // 16-bit registers
- def AX : RegisterWithSubRegs<"ax", [AH,AL]>, DwarfRegNum<[0, 0, 0]>;
- def DX : RegisterWithSubRegs<"dx", [DH,DL]>, DwarfRegNum<[1, 2, 2]>;
- def CX : RegisterWithSubRegs<"cx", [CH,CL]>, DwarfRegNum<[2, 1, 1]>;
- def BX : RegisterWithSubRegs<"bx", [BH,BL]>, DwarfRegNum<[3, 3, 3]>;
- def SI : RegisterWithSubRegs<"si", [SIL]>, DwarfRegNum<[4, 6, 6]>;
- def DI : RegisterWithSubRegs<"di", [DIL]>, DwarfRegNum<[5, 7, 7]>;
- def BP : RegisterWithSubRegs<"bp", [BPL]>, DwarfRegNum<[6, 4, 5]>;
- def SP : RegisterWithSubRegs<"sp", [SPL]>, DwarfRegNum<[7, 5, 4]>;
- def IP : Register<"ip">, DwarfRegNum<[16]>;
-
- // X86-64 only
- def R8W : RegisterWithSubRegs<"r8w", [R8B]>, DwarfRegNum<[8, -2, -2]>;
- def R9W : RegisterWithSubRegs<"r9w", [R9B]>, DwarfRegNum<[9, -2, -2]>;
- def R10W : RegisterWithSubRegs<"r10w", [R10B]>, DwarfRegNum<[10, -2, -2]>;
- def R11W : RegisterWithSubRegs<"r11w", [R11B]>, DwarfRegNum<[11, -2, -2]>;
- def R12W : RegisterWithSubRegs<"r12w", [R12B]>, DwarfRegNum<[12, -2, -2]>;
- def R13W : RegisterWithSubRegs<"r13w", [R13B]>, DwarfRegNum<[13, -2, -2]>;
- def R14W : RegisterWithSubRegs<"r14w", [R14B]>, DwarfRegNum<[14, -2, -2]>;
- def R15W : RegisterWithSubRegs<"r15w", [R15B]>, DwarfRegNum<[15, -2, -2]>;
-
- // 32-bit registers
- def EAX : RegisterWithSubRegs<"eax", [AX]>, DwarfRegNum<[0, 0, 0]>;
- def EDX : RegisterWithSubRegs<"edx", [DX]>, DwarfRegNum<[1, 2, 2]>;
- def ECX : RegisterWithSubRegs<"ecx", [CX]>, DwarfRegNum<[2, 1, 1]>;
- def EBX : RegisterWithSubRegs<"ebx", [BX]>, DwarfRegNum<[3, 3, 3]>;
- def ESI : RegisterWithSubRegs<"esi", [SI]>, DwarfRegNum<[4, 6, 6]>;
- def EDI : RegisterWithSubRegs<"edi", [DI]>, DwarfRegNum<[5, 7, 7]>;
- def EBP : RegisterWithSubRegs<"ebp", [BP]>, DwarfRegNum<[6, 4, 5]>;
- def ESP : RegisterWithSubRegs<"esp", [SP]>, DwarfRegNum<[7, 5, 4]>;
- def EIP : RegisterWithSubRegs<"eip", [IP]>, DwarfRegNum<[16, 8, 8]>;
-
- // X86-64 only
- def R8D : RegisterWithSubRegs<"r8d", [R8W]>, DwarfRegNum<[8, -2, -2]>;
- def R9D : RegisterWithSubRegs<"r9d", [R9W]>, DwarfRegNum<[9, -2, -2]>;
- def R10D : RegisterWithSubRegs<"r10d", [R10W]>, DwarfRegNum<[10, -2, -2]>;
- def R11D : RegisterWithSubRegs<"r11d", [R11W]>, DwarfRegNum<[11, -2, -2]>;
- def R12D : RegisterWithSubRegs<"r12d", [R12W]>, DwarfRegNum<[12, -2, -2]>;
- def R13D : RegisterWithSubRegs<"r13d", [R13W]>, DwarfRegNum<[13, -2, -2]>;
- def R14D : RegisterWithSubRegs<"r14d", [R14W]>, DwarfRegNum<[14, -2, -2]>;
- def R15D : RegisterWithSubRegs<"r15d", [R15W]>, DwarfRegNum<[15, -2, -2]>;
-
- // 64-bit registers, X86-64 only
- def RAX : RegisterWithSubRegs<"rax", [EAX]>, DwarfRegNum<[0, -2, -2]>;
- def RDX : RegisterWithSubRegs<"rdx", [EDX]>, DwarfRegNum<[1, -2, -2]>;
- def RCX : RegisterWithSubRegs<"rcx", [ECX]>, DwarfRegNum<[2, -2, -2]>;
- def RBX : RegisterWithSubRegs<"rbx", [EBX]>, DwarfRegNum<[3, -2, -2]>;
- def RSI : RegisterWithSubRegs<"rsi", [ESI]>, DwarfRegNum<[4, -2, -2]>;
- def RDI : RegisterWithSubRegs<"rdi", [EDI]>, DwarfRegNum<[5, -2, -2]>;
- def RBP : RegisterWithSubRegs<"rbp", [EBP]>, DwarfRegNum<[6, -2, -2]>;
- def RSP : RegisterWithSubRegs<"rsp", [ESP]>, DwarfRegNum<[7, -2, -2]>;
-
- def R8 : RegisterWithSubRegs<"r8", [R8D]>, DwarfRegNum<[8, -2, -2]>;
- def R9 : RegisterWithSubRegs<"r9", [R9D]>, DwarfRegNum<[9, -2, -2]>;
- def R10 : RegisterWithSubRegs<"r10", [R10D]>, DwarfRegNum<[10, -2, -2]>;
- def R11 : RegisterWithSubRegs<"r11", [R11D]>, DwarfRegNum<[11, -2, -2]>;
- def R12 : RegisterWithSubRegs<"r12", [R12D]>, DwarfRegNum<[12, -2, -2]>;
- def R13 : RegisterWithSubRegs<"r13", [R13D]>, DwarfRegNum<[13, -2, -2]>;
- def R14 : RegisterWithSubRegs<"r14", [R14D]>, DwarfRegNum<[14, -2, -2]>;
- def R15 : RegisterWithSubRegs<"r15", [R15D]>, DwarfRegNum<[15, -2, -2]>;
- def RIP : RegisterWithSubRegs<"rip", [EIP]>, DwarfRegNum<[16, -2, -2]>;
-
- // MMX Registers. These are actually aliased to ST0 .. ST7
- def MM0 : Register<"mm0">, DwarfRegNum<[41, 29, 29]>;
- def MM1 : Register<"mm1">, DwarfRegNum<[42, 30, 30]>;
- def MM2 : Register<"mm2">, DwarfRegNum<[43, 31, 31]>;
- def MM3 : Register<"mm3">, DwarfRegNum<[44, 32, 32]>;
- def MM4 : Register<"mm4">, DwarfRegNum<[45, 33, 33]>;
- def MM5 : Register<"mm5">, DwarfRegNum<[46, 34, 34]>;
- def MM6 : Register<"mm6">, DwarfRegNum<[47, 35, 35]>;
- def MM7 : Register<"mm7">, DwarfRegNum<[48, 36, 36]>;
-
- // Pseudo Floating Point registers
- def FP0 : Register<"fp0">;
- def FP1 : Register<"fp1">;
- def FP2 : Register<"fp2">;
- def FP3 : Register<"fp3">;
- def FP4 : Register<"fp4">;
- def FP5 : Register<"fp5">;
- def FP6 : Register<"fp6">;
-
- // XMM Registers, used by the various SSE instruction set extensions
- def XMM0: Register<"xmm0">, DwarfRegNum<[17, 21, 21]>;
- def XMM1: Register<"xmm1">, DwarfRegNum<[18, 22, 22]>;
- def XMM2: Register<"xmm2">, DwarfRegNum<[19, 23, 23]>;
- def XMM3: Register<"xmm3">, DwarfRegNum<[20, 24, 24]>;
- def XMM4: Register<"xmm4">, DwarfRegNum<[21, 25, 25]>;
- def XMM5: Register<"xmm5">, DwarfRegNum<[22, 26, 26]>;
- def XMM6: Register<"xmm6">, DwarfRegNum<[23, 27, 27]>;
- def XMM7: Register<"xmm7">, DwarfRegNum<[24, 28, 28]>;
-
- // X86-64 only
- def XMM8: Register<"xmm8">, DwarfRegNum<[25, -2, -2]>;
- def XMM9: Register<"xmm9">, DwarfRegNum<[26, -2, -2]>;
- def XMM10: Register<"xmm10">, DwarfRegNum<[27, -2, -2]>;
- def XMM11: Register<"xmm11">, DwarfRegNum<[28, -2, -2]>;
- def XMM12: Register<"xmm12">, DwarfRegNum<[29, -2, -2]>;
- def XMM13: Register<"xmm13">, DwarfRegNum<[30, -2, -2]>;
- def XMM14: Register<"xmm14">, DwarfRegNum<[31, -2, -2]>;
- def XMM15: Register<"xmm15">, DwarfRegNum<[32, -2, -2]>;
-
- // Floating point stack registers
- def ST0 : Register<"st(0)">, DwarfRegNum<[33, 12, 11]>;
- def ST1 : Register<"st(1)">, DwarfRegNum<[34, 13, 12]>;
- def ST2 : Register<"st(2)">, DwarfRegNum<[35, 14, 13]>;
- def ST3 : Register<"st(3)">, DwarfRegNum<[36, 15, 14]>;
- def ST4 : Register<"st(4)">, DwarfRegNum<[37, 16, 15]>;
- def ST5 : Register<"st(5)">, DwarfRegNum<[38, 17, 16]>;
- def ST6 : Register<"st(6)">, DwarfRegNum<[39, 18, 17]>;
- def ST7 : Register<"st(7)">, DwarfRegNum<[40, 19, 18]>;
-
- // Status flags register
- def EFLAGS : Register<"eflags">;