//===- X86RegisterInfo.td - Describe the X86 Register File --*- tablegen -*-==//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This file describes the X86 Register file, defining the registers themselves,
//
//===----------------------------------------------------------------------===//
-//===----------------------------------------------------------------------===//
-// Register definitions...
-//
-let Namespace = "X86" in {
-
- // 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. On x86-64, these cannot be used in any instruction
- // with a REX prefix.
- 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", [AL,AH]>, DwarfRegNum<[0, 0, 0]>;
- def DX : RegisterWithSubRegs<"dx", [DL,DH]>, DwarfRegNum<[1, 2, 2]>;
- def CX : RegisterWithSubRegs<"cx", [CL,CH]>, DwarfRegNum<[2, 1, 1]>;
- def BX : RegisterWithSubRegs<"bx", [BL,BH]>, 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]>;
-
- // YMM Registers, used by AVX instructions
- def YMM0: Register<"ymm0">, DwarfRegNum<[17, 21, 21]>;
- def YMM1: Register<"ymm1">, DwarfRegNum<[18, 22, 22]>;
- def YMM2: Register<"ymm2">, DwarfRegNum<[19, 23, 23]>;
- def YMM3: Register<"ymm3">, DwarfRegNum<[20, 24, 24]>;
- def YMM4: Register<"ymm4">, DwarfRegNum<[21, 25, 25]>;
- def YMM5: Register<"ymm5">, DwarfRegNum<[22, 26, 26]>;
- def YMM6: Register<"ymm6">, DwarfRegNum<[23, 27, 27]>;
- def YMM7: Register<"ymm7">, DwarfRegNum<[24, 28, 28]>;
- def YMM8: Register<"ymm8">, DwarfRegNum<[25, -2, -2]>;
- def YMM9: Register<"ymm9">, DwarfRegNum<[26, -2, -2]>;
- def YMM10: Register<"ymm10">, DwarfRegNum<[27, -2, -2]>;
- def YMM11: Register<"ymm11">, DwarfRegNum<[28, -2, -2]>;
- def YMM12: Register<"ymm12">, DwarfRegNum<[29, -2, -2]>;
- def YMM13: Register<"ymm13">, DwarfRegNum<[30, -2, -2]>;
- def YMM14: Register<"ymm14">, DwarfRegNum<[31, -2, -2]>;
- def YMM15: Register<"ymm15">, 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<"flags">;
-
- // Segment registers
- def CS : Register<"cs">;
- def DS : Register<"ds">;
- def SS : Register<"ss">;
- def ES : Register<"es">;
- def FS : Register<"fs">;
- def GS : Register<"gs">;
+class X86Reg<string n, bits<16> Enc, list<Register> subregs = []> : Register<n> {
+ let Namespace = "X86";
+ let HWEncoding = Enc;
+ let SubRegs = subregs;
}
+// Subregister indices.
+let Namespace = "X86" in {
+ def sub_8bit : SubRegIndex<8>;
+ def sub_8bit_hi : SubRegIndex<8, 8>;
+ def sub_16bit : SubRegIndex<16>;
+ def sub_32bit : SubRegIndex<32>;
+ def sub_xmm : SubRegIndex<128>;
+ def sub_ymm : SubRegIndex<256>;
+}
//===----------------------------------------------------------------------===//
-// Subregister Set Definitions... now that we have all of the pieces, define the
-// sub registers for each register.
+// Register definitions...
//
-def x86_subreg_8bit : PatLeaf<(i32 1)>;
-def x86_subreg_8bit_hi : PatLeaf<(i32 2)>;
-def x86_subreg_16bit : PatLeaf<(i32 3)>;
-def x86_subreg_32bit : PatLeaf<(i32 4)>;
-
-def : SubRegSet<1, [AX, CX, DX, BX, SP, BP, SI, DI,
- R8W, R9W, R10W, R11W, R12W, R13W, R14W, R15W],
- [AL, CL, DL, BL, SPL, BPL, SIL, DIL,
- R8B, R9B, R10B, R11B, R12B, R13B, R14B, R15B]>;
-
-def : SubRegSet<2, [AX, CX, DX, BX],
- [AH, CH, DH, BH]>;
-
-def : SubRegSet<1, [EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI,
- R8D, R9D, R10D, R11D, R12D, R13D, R14D, R15D],
- [AL, CL, DL, BL, SPL, BPL, SIL, DIL,
- R8B, R9B, R10B, R11B, R12B, R13B, R14B, R15B]>;
-
-def : SubRegSet<2, [EAX, ECX, EDX, EBX],
- [AH, CH, DH, BH]>;
+// 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 : X86Reg<"al", 0>;
+def DL : X86Reg<"dl", 2>;
+def CL : X86Reg<"cl", 1>;
+def BL : X86Reg<"bl", 3>;
+
+// High registers. On x86-64, these cannot be used in any instruction
+// with a REX prefix.
+def AH : X86Reg<"ah", 4>;
+def DH : X86Reg<"dh", 6>;
+def CH : X86Reg<"ch", 5>;
+def BH : X86Reg<"bh", 7>;
+
+// X86-64 only, requires REX.
+let CostPerUse = 1 in {
+def SIL : X86Reg<"sil", 6>;
+def DIL : X86Reg<"dil", 7>;
+def BPL : X86Reg<"bpl", 5>;
+def SPL : X86Reg<"spl", 4>;
+def R8B : X86Reg<"r8b", 8>;
+def R9B : X86Reg<"r9b", 9>;
+def R10B : X86Reg<"r10b", 10>;
+def R11B : X86Reg<"r11b", 11>;
+def R12B : X86Reg<"r12b", 12>;
+def R13B : X86Reg<"r13b", 13>;
+def R14B : X86Reg<"r14b", 14>;
+def R15B : X86Reg<"r15b", 15>;
+}
-def : SubRegSet<3, [EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI,
- R8D, R9D, R10D, R11D, R12D, R13D, R14D, R15D],
- [AX, CX, DX, BX, SP, BP, SI, DI,
- R8W, R9W, R10W, R11W, R12W, R13W, R14W, R15W]>;
+// 16-bit registers
+let SubRegIndices = [sub_8bit, sub_8bit_hi], CoveredBySubRegs = 1 in {
+def AX : X86Reg<"ax", 0, [AL,AH]>;
+def DX : X86Reg<"dx", 2, [DL,DH]>;
+def CX : X86Reg<"cx", 1, [CL,CH]>;
+def BX : X86Reg<"bx", 3, [BL,BH]>;
+}
+let SubRegIndices = [sub_8bit] in {
+def SI : X86Reg<"si", 6, [SIL]>;
+def DI : X86Reg<"di", 7, [DIL]>;
+def BP : X86Reg<"bp", 5, [BPL]>;
+def SP : X86Reg<"sp", 4, [SPL]>;
+}
+def IP : X86Reg<"ip", 0>;
+
+// X86-64 only, requires REX.
+let SubRegIndices = [sub_8bit], CostPerUse = 1 in {
+def R8W : X86Reg<"r8w", 8, [R8B]>;
+def R9W : X86Reg<"r9w", 9, [R9B]>;
+def R10W : X86Reg<"r10w", 10, [R10B]>;
+def R11W : X86Reg<"r11w", 11, [R11B]>;
+def R12W : X86Reg<"r12w", 12, [R12B]>;
+def R13W : X86Reg<"r13w", 13, [R13B]>;
+def R14W : X86Reg<"r14w", 14, [R14B]>;
+def R15W : X86Reg<"r15w", 15, [R15B]>;
+}
-def : SubRegSet<1, [RAX, RCX, RDX, RBX, RSP, RBP, RSI, RDI,
- R8, R9, R10, R11, R12, R13, R14, R15],
- [AL, CL, DL, BL, SPL, BPL, SIL, DIL,
- R8B, R9B, R10B, R11B, R12B, R13B, R14B, R15B]>;
+// 32-bit registers
+let SubRegIndices = [sub_16bit] in {
+def EAX : X86Reg<"eax", 0, [AX]>, DwarfRegNum<[-2, 0, 0]>;
+def EDX : X86Reg<"edx", 2, [DX]>, DwarfRegNum<[-2, 2, 2]>;
+def ECX : X86Reg<"ecx", 1, [CX]>, DwarfRegNum<[-2, 1, 1]>;
+def EBX : X86Reg<"ebx", 3, [BX]>, DwarfRegNum<[-2, 3, 3]>;
+def ESI : X86Reg<"esi", 6, [SI]>, DwarfRegNum<[-2, 6, 6]>;
+def EDI : X86Reg<"edi", 7, [DI]>, DwarfRegNum<[-2, 7, 7]>;
+def EBP : X86Reg<"ebp", 5, [BP]>, DwarfRegNum<[-2, 4, 5]>;
+def ESP : X86Reg<"esp", 4, [SP]>, DwarfRegNum<[-2, 5, 4]>;
+def EIP : X86Reg<"eip", 0, [IP]>, DwarfRegNum<[-2, 8, 8]>;
+
+// X86-64 only, requires REX
+let CostPerUse = 1 in {
+def R8D : X86Reg<"r8d", 8, [R8W]>;
+def R9D : X86Reg<"r9d", 9, [R9W]>;
+def R10D : X86Reg<"r10d", 10, [R10W]>;
+def R11D : X86Reg<"r11d", 11, [R11W]>;
+def R12D : X86Reg<"r12d", 12, [R12W]>;
+def R13D : X86Reg<"r13d", 13, [R13W]>;
+def R14D : X86Reg<"r14d", 14, [R14W]>;
+def R15D : X86Reg<"r15d", 15, [R15W]>;
+}}
+
+// 64-bit registers, X86-64 only
+let SubRegIndices = [sub_32bit] in {
+def RAX : X86Reg<"rax", 0, [EAX]>, DwarfRegNum<[0, -2, -2]>;
+def RDX : X86Reg<"rdx", 2, [EDX]>, DwarfRegNum<[1, -2, -2]>;
+def RCX : X86Reg<"rcx", 1, [ECX]>, DwarfRegNum<[2, -2, -2]>;
+def RBX : X86Reg<"rbx", 3, [EBX]>, DwarfRegNum<[3, -2, -2]>;
+def RSI : X86Reg<"rsi", 6, [ESI]>, DwarfRegNum<[4, -2, -2]>;
+def RDI : X86Reg<"rdi", 7, [EDI]>, DwarfRegNum<[5, -2, -2]>;
+def RBP : X86Reg<"rbp", 5, [EBP]>, DwarfRegNum<[6, -2, -2]>;
+def RSP : X86Reg<"rsp", 4, [ESP]>, DwarfRegNum<[7, -2, -2]>;
+
+// These also require REX.
+let CostPerUse = 1 in {
+def R8 : X86Reg<"r8", 8, [R8D]>, DwarfRegNum<[ 8, -2, -2]>;
+def R9 : X86Reg<"r9", 9, [R9D]>, DwarfRegNum<[ 9, -2, -2]>;
+def R10 : X86Reg<"r10", 10, [R10D]>, DwarfRegNum<[10, -2, -2]>;
+def R11 : X86Reg<"r11", 11, [R11D]>, DwarfRegNum<[11, -2, -2]>;
+def R12 : X86Reg<"r12", 12, [R12D]>, DwarfRegNum<[12, -2, -2]>;
+def R13 : X86Reg<"r13", 13, [R13D]>, DwarfRegNum<[13, -2, -2]>;
+def R14 : X86Reg<"r14", 14, [R14D]>, DwarfRegNum<[14, -2, -2]>;
+def R15 : X86Reg<"r15", 15, [R15D]>, DwarfRegNum<[15, -2, -2]>;
+def RIP : X86Reg<"rip", 0, [EIP]>, DwarfRegNum<[16, -2, -2]>;
+}}
+
+// MMX Registers. These are actually aliased to ST0 .. ST7
+def MM0 : X86Reg<"mm0", 0>, DwarfRegNum<[41, 29, 29]>;
+def MM1 : X86Reg<"mm1", 1>, DwarfRegNum<[42, 30, 30]>;
+def MM2 : X86Reg<"mm2", 2>, DwarfRegNum<[43, 31, 31]>;
+def MM3 : X86Reg<"mm3", 3>, DwarfRegNum<[44, 32, 32]>;
+def MM4 : X86Reg<"mm4", 4>, DwarfRegNum<[45, 33, 33]>;
+def MM5 : X86Reg<"mm5", 5>, DwarfRegNum<[46, 34, 34]>;
+def MM6 : X86Reg<"mm6", 6>, DwarfRegNum<[47, 35, 35]>;
+def MM7 : X86Reg<"mm7", 7>, DwarfRegNum<[48, 36, 36]>;
+
+// Pseudo Floating Point registers
+def FP0 : X86Reg<"fp0", 0>;
+def FP1 : X86Reg<"fp1", 0>;
+def FP2 : X86Reg<"fp2", 0>;
+def FP3 : X86Reg<"fp3", 0>;
+def FP4 : X86Reg<"fp4", 0>;
+def FP5 : X86Reg<"fp5", 0>;
+def FP6 : X86Reg<"fp6", 0>;
+
+// XMM Registers, used by the various SSE instruction set extensions.
+def XMM0: X86Reg<"xmm0", 0>, DwarfRegNum<[17, 21, 21]>;
+def XMM1: X86Reg<"xmm1", 1>, DwarfRegNum<[18, 22, 22]>;
+def XMM2: X86Reg<"xmm2", 2>, DwarfRegNum<[19, 23, 23]>;
+def XMM3: X86Reg<"xmm3", 3>, DwarfRegNum<[20, 24, 24]>;
+def XMM4: X86Reg<"xmm4", 4>, DwarfRegNum<[21, 25, 25]>;
+def XMM5: X86Reg<"xmm5", 5>, DwarfRegNum<[22, 26, 26]>;
+def XMM6: X86Reg<"xmm6", 6>, DwarfRegNum<[23, 27, 27]>;
+def XMM7: X86Reg<"xmm7", 7>, DwarfRegNum<[24, 28, 28]>;
+
+// X86-64 only
+let CostPerUse = 1 in {
+def XMM8: X86Reg<"xmm8", 8>, DwarfRegNum<[25, -2, -2]>;
+def XMM9: X86Reg<"xmm9", 9>, DwarfRegNum<[26, -2, -2]>;
+def XMM10: X86Reg<"xmm10", 10>, DwarfRegNum<[27, -2, -2]>;
+def XMM11: X86Reg<"xmm11", 11>, DwarfRegNum<[28, -2, -2]>;
+def XMM12: X86Reg<"xmm12", 12>, DwarfRegNum<[29, -2, -2]>;
+def XMM13: X86Reg<"xmm13", 13>, DwarfRegNum<[30, -2, -2]>;
+def XMM14: X86Reg<"xmm14", 14>, DwarfRegNum<[31, -2, -2]>;
+def XMM15: X86Reg<"xmm15", 15>, DwarfRegNum<[32, -2, -2]>;
+
+def XMM16: X86Reg<"xmm16", 16>, DwarfRegNum<[60, -2, -2]>;
+def XMM17: X86Reg<"xmm17", 17>, DwarfRegNum<[61, -2, -2]>;
+def XMM18: X86Reg<"xmm18", 18>, DwarfRegNum<[62, -2, -2]>;
+def XMM19: X86Reg<"xmm19", 19>, DwarfRegNum<[63, -2, -2]>;
+def XMM20: X86Reg<"xmm20", 20>, DwarfRegNum<[64, -2, -2]>;
+def XMM21: X86Reg<"xmm21", 21>, DwarfRegNum<[65, -2, -2]>;
+def XMM22: X86Reg<"xmm22", 22>, DwarfRegNum<[66, -2, -2]>;
+def XMM23: X86Reg<"xmm23", 23>, DwarfRegNum<[67, -2, -2]>;
+def XMM24: X86Reg<"xmm24", 24>, DwarfRegNum<[68, -2, -2]>;
+def XMM25: X86Reg<"xmm25", 25>, DwarfRegNum<[69, -2, -2]>;
+def XMM26: X86Reg<"xmm26", 26>, DwarfRegNum<[70, -2, -2]>;
+def XMM27: X86Reg<"xmm27", 27>, DwarfRegNum<[71, -2, -2]>;
+def XMM28: X86Reg<"xmm28", 28>, DwarfRegNum<[72, -2, -2]>;
+def XMM29: X86Reg<"xmm29", 29>, DwarfRegNum<[73, -2, -2]>;
+def XMM30: X86Reg<"xmm30", 30>, DwarfRegNum<[74, -2, -2]>;
+def XMM31: X86Reg<"xmm31", 31>, DwarfRegNum<[75, -2, -2]>;
+
+} // CostPerUse
+
+// YMM0-15 registers, used by AVX instructions and
+// YMM16-31 registers, used by AVX-512 instructions.
+let SubRegIndices = [sub_xmm] in {
+ foreach Index = 0-31 in {
+ def YMM#Index : X86Reg<"ymm"#Index, Index, [!cast<X86Reg>("XMM"#Index)]>,
+ DwarfRegAlias<!cast<X86Reg>("XMM"#Index)>;
+ }
+}
-def : SubRegSet<2, [RAX, RCX, RDX, RBX],
- [AH, CH, DH, BH]>;
+// ZMM Registers, used by AVX-512 instructions.
+let SubRegIndices = [sub_ymm] in {
+ foreach Index = 0-31 in {
+ def ZMM#Index : X86Reg<"zmm"#Index, Index, [!cast<X86Reg>("YMM"#Index)]>,
+ DwarfRegAlias<!cast<X86Reg>("XMM"#Index)>;
+ }
+}
-def : SubRegSet<3, [RAX, RCX, RDX, RBX, RSP, RBP, RSI, RDI,
- R8, R9, R10, R11, R12, R13, R14, R15],
- [AX, CX, DX, BX, SP, BP, SI, DI,
- R8W, R9W, R10W, R11W, R12W, R13W, R14W, R15W]>;
+ // Mask Registers, used by AVX-512 instructions.
+ def K0 : X86Reg<"k0", 0>, DwarfRegNum<[118, -2, -2]>;
+ def K1 : X86Reg<"k1", 1>, DwarfRegNum<[119, -2, -2]>;
+ def K2 : X86Reg<"k2", 2>, DwarfRegNum<[120, -2, -2]>;
+ def K3 : X86Reg<"k3", 3>, DwarfRegNum<[121, -2, -2]>;
+ def K4 : X86Reg<"k4", 4>, DwarfRegNum<[122, -2, -2]>;
+ def K5 : X86Reg<"k5", 5>, DwarfRegNum<[123, -2, -2]>;
+ def K6 : X86Reg<"k6", 6>, DwarfRegNum<[124, -2, -2]>;
+ def K7 : X86Reg<"k7", 7>, DwarfRegNum<[125, -2, -2]>;
+
+class STRegister<string n, bits<16> Enc, list<Register> A> : X86Reg<n, Enc> {
+ let Aliases = A;
+}
-def : SubRegSet<4, [RAX, RCX, RDX, RBX, RSP, RBP, RSI, RDI,
- R8, R9, R10, R11, R12, R13, R14, R15],
- [EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI,
- R8D, R9D, R10D, R11D, R12D, R13D, R14D, R15D]>;
+// Floating point stack registers. These don't map one-to-one to the FP
+// pseudo registers, but we still mark them as aliasing FP registers. That
+// way both kinds can be live without exceeding the stack depth. ST registers
+// are only live around inline assembly.
+def ST0 : STRegister<"st(0)", 0, []>, DwarfRegNum<[33, 12, 11]>;
+def ST1 : STRegister<"st(1)", 1, [FP6]>, DwarfRegNum<[34, 13, 12]>;
+def ST2 : STRegister<"st(2)", 2, [FP5]>, DwarfRegNum<[35, 14, 13]>;
+def ST3 : STRegister<"st(3)", 3, [FP4]>, DwarfRegNum<[36, 15, 14]>;
+def ST4 : STRegister<"st(4)", 4, [FP3]>, DwarfRegNum<[37, 16, 15]>;
+def ST5 : STRegister<"st(5)", 5, [FP2]>, DwarfRegNum<[38, 17, 16]>;
+def ST6 : STRegister<"st(6)", 6, [FP1]>, DwarfRegNum<[39, 18, 17]>;
+def ST7 : STRegister<"st(7)", 7, [FP0]>, DwarfRegNum<[40, 19, 18]>;
+
+// Floating-point status word
+def FPSW : X86Reg<"fpsw", 0>;
+
+// Status flags register
+def EFLAGS : X86Reg<"flags", 0>;
+
+// Segment registers
+def CS : X86Reg<"cs", 1>;
+def DS : X86Reg<"ds", 3>;
+def SS : X86Reg<"ss", 2>;
+def ES : X86Reg<"es", 0>;
+def FS : X86Reg<"fs", 4>;
+def GS : X86Reg<"gs", 5>;
+
+// Debug registers
+def DR0 : X86Reg<"dr0", 0>;
+def DR1 : X86Reg<"dr1", 1>;
+def DR2 : X86Reg<"dr2", 2>;
+def DR3 : X86Reg<"dr3", 3>;
+def DR4 : X86Reg<"dr4", 4>;
+def DR5 : X86Reg<"dr5", 5>;
+def DR6 : X86Reg<"dr6", 6>;
+def DR7 : X86Reg<"dr7", 7>;
+
+// Control registers
+def CR0 : X86Reg<"cr0", 0>;
+def CR1 : X86Reg<"cr1", 1>;
+def CR2 : X86Reg<"cr2", 2>;
+def CR3 : X86Reg<"cr3", 3>;
+def CR4 : X86Reg<"cr4", 4>;
+def CR5 : X86Reg<"cr5", 5>;
+def CR6 : X86Reg<"cr6", 6>;
+def CR7 : X86Reg<"cr7", 7>;
+def CR8 : X86Reg<"cr8", 8>;
+def CR9 : X86Reg<"cr9", 9>;
+def CR10 : X86Reg<"cr10", 10>;
+def CR11 : X86Reg<"cr11", 11>;
+def CR12 : X86Reg<"cr12", 12>;
+def CR13 : X86Reg<"cr13", 13>;
+def CR14 : X86Reg<"cr14", 14>;
+def CR15 : X86Reg<"cr15", 15>;
+
+// Pseudo index registers
+def EIZ : X86Reg<"eiz", 4>;
+def RIZ : X86Reg<"riz", 4>;
-def : SubRegSet<1, [YMM0, YMM1, YMM2, YMM3, YMM4, YMM5, YMM6, YMM7,
- YMM8, YMM9, YMM10, YMM11, YMM12, YMM13, YMM14, YMM15],
- [XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
- XMM8, XMM9, XMM10, XMM11, XMM12, XMM13, XMM14, XMM15]>;
//===----------------------------------------------------------------------===//
// Register Class Definitions... now that we have all of the pieces, define the
// implicitly defined to be the register allocation order.
//
-// List call-clobbered registers before callee-save registers. RBX, RBP, (and
+// List call-clobbered registers before callee-save registers. RBX, RBP, (and
// R12, R13, R14, and R15 for X86-64) are callee-save registers.
// In 64-mode, there are 12 additional i8 registers, SIL, DIL, BPL, SPL, and
-// R8B, ... R15B.
+// R8B, ... R15B.
// Allocate R12 and R13 last, as these require an extra byte when
// encoded in x86_64 instructions.
// FIXME: Allow AH, CH, DH, BH to be used as general-purpose registers in
// require a REX prefix. For example, "addb %ah, %dil" and "movzbl %ah, %r8d"
// cannot be encoded.
def GR8 : RegisterClass<"X86", [i8], 8,
- [AL, CL, DL, AH, CH, DH, BL, BH, SIL, DIL, BPL, SPL,
- R8B, R9B, R10B, R11B, R14B, R15B, R12B, R13B]> {
- let MethodProtos = [{
- iterator allocation_order_begin(const MachineFunction &MF) const;
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- static const unsigned X86_GR8_AO_64[] = {
- X86::AL, X86::CL, X86::DL, X86::SIL, X86::DIL,
- X86::R8B, X86::R9B, X86::R10B, X86::R11B,
- X86::BL, X86::R14B, X86::R15B, X86::R12B, X86::R13B, X86::BPL
- };
-
- GR8Class::iterator
- GR8Class::allocation_order_begin(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit())
- return X86_GR8_AO_64;
- else
- return begin();
- }
-
- GR8Class::iterator
- GR8Class::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- // Does the function dedicate RBP / EBP to being a frame ptr?
- if (!Subtarget.is64Bit())
- // In 32-mode, none of the 8-bit registers aliases EBP or ESP.
- return begin() + 8;
- else if (RI->hasFP(MF))
- // If so, don't allocate SPL or BPL.
- return array_endof(X86_GR8_AO_64) - 1;
- else
- // If not, just don't allocate SPL.
- return array_endof(X86_GR8_AO_64);
- }
+ (add AL, CL, DL, AH, CH, DH, BL, BH, SIL, DIL, BPL, SPL,
+ R8B, R9B, R10B, R11B, R14B, R15B, R12B, R13B)> {
+ let AltOrders = [(sub GR8, AH, BH, CH, DH)];
+ let AltOrderSelect = [{
+ return MF.getTarget().getSubtarget<X86Subtarget>().is64Bit();
}];
}
def GR16 : RegisterClass<"X86", [i16], 16,
- [AX, CX, DX, SI, DI, BX, BP, SP,
- R8W, R9W, R10W, R11W, R14W, R15W, R12W, R13W]> {
- let SubRegClassList = [GR8, GR8];
- let MethodProtos = [{
- iterator allocation_order_begin(const MachineFunction &MF) const;
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- static const unsigned X86_GR16_AO_64[] = {
- X86::AX, X86::CX, X86::DX, X86::SI, X86::DI,
- X86::R8W, X86::R9W, X86::R10W, X86::R11W,
- X86::BX, X86::R14W, X86::R15W, X86::R12W, X86::R13W, X86::BP
- };
-
- GR16Class::iterator
- GR16Class::allocation_order_begin(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit())
- return X86_GR16_AO_64;
- else
- return begin();
- }
-
- GR16Class::iterator
- GR16Class::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit()) {
- // Does the function dedicate RBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate SP or BP.
- return array_endof(X86_GR16_AO_64) - 1;
- else
- // If not, just don't allocate SP.
- return array_endof(X86_GR16_AO_64);
- } else {
- // Does the function dedicate EBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate SP or BP.
- return begin() + 6;
- else
- // If not, just don't allocate SP.
- return begin() + 7;
- }
- }
- }];
-}
+ (add AX, CX, DX, SI, DI, BX, BP, SP,
+ R8W, R9W, R10W, R11W, R14W, R15W, R12W, R13W)>;
-def GR32 : RegisterClass<"X86", [i32], 32,
- [EAX, ECX, EDX, ESI, EDI, EBX, EBP, ESP,
- R8D, R9D, R10D, R11D, R14D, R15D, R12D, R13D]> {
- let SubRegClassList = [GR8, GR8, GR16];
- let MethodProtos = [{
- iterator allocation_order_begin(const MachineFunction &MF) const;
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- static const unsigned X86_GR32_AO_64[] = {
- X86::EAX, X86::ECX, X86::EDX, X86::ESI, X86::EDI,
- X86::R8D, X86::R9D, X86::R10D, X86::R11D,
- X86::EBX, X86::R14D, X86::R15D, X86::R12D, X86::R13D, X86::EBP
- };
-
- GR32Class::iterator
- GR32Class::allocation_order_begin(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit())
- return X86_GR32_AO_64;
- else
- return begin();
- }
-
- GR32Class::iterator
- GR32Class::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit()) {
- // Does the function dedicate RBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate ESP or EBP.
- return array_endof(X86_GR32_AO_64) - 1;
- else
- // If not, just don't allocate ESP.
- return array_endof(X86_GR32_AO_64);
- } else {
- // Does the function dedicate EBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate ESP or EBP.
- return begin() + 6;
- else
- // If not, just don't allocate ESP.
- return begin() + 7;
- }
- }
- }];
-}
+def GR32 : RegisterClass<"X86", [i32], 32,
+ (add EAX, ECX, EDX, ESI, EDI, EBX, EBP, ESP,
+ R8D, R9D, R10D, R11D, R14D, R15D, R12D, R13D)>;
// GR64 - 64-bit GPRs. This oddly includes RIP, which isn't accurate, since
// RIP isn't really a register and it can't be used anywhere except in an
// address, but it doesn't cause trouble.
-def GR64 : RegisterClass<"X86", [i64], 64,
- [RAX, RCX, RDX, RSI, RDI, R8, R9, R10, R11,
- RBX, R14, R15, R12, R13, RBP, RSP, RIP]> {
- let SubRegClassList = [GR8, GR8, GR16, GR32];
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- GR64Class::iterator
- GR64Class::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (!Subtarget.is64Bit())
- return begin(); // None of these are allocatable in 32-bit.
- if (RI->hasFP(MF)) // Does the function dedicate RBP to being a frame ptr?
- return end()-3; // If so, don't allocate RIP, RSP or RBP
- else
- return end()-2; // If not, just don't allocate RIP or RSP
- }
- }];
-}
+def GR64 : RegisterClass<"X86", [i64], 64,
+ (add RAX, RCX, RDX, RSI, RDI, R8, R9, R10, R11,
+ RBX, R14, R15, R12, R13, RBP, RSP, RIP)>;
// Segment registers for use by MOV instructions (and others) that have a
// segment register as one operand. Always contain a 16-bit segment
// descriptor.
-def SEGMENT_REG : RegisterClass<"X86", [i16], 16, [CS, DS, SS, ES, FS, GS]> {
-}
+def SEGMENT_REG : RegisterClass<"X86", [i16], 16, (add CS, DS, SS, ES, FS, GS)>;
+
+// Debug registers.
+def DEBUG_REG : RegisterClass<"X86", [i32], 32, (sequence "DR%u", 0, 7)>;
+
+// Control registers.
+def CONTROL_REG : RegisterClass<"X86", [i64], 64, (sequence "CR%u", 0, 15)>;
// GR8_ABCD_L, GR8_ABCD_H, GR16_ABCD, GR32_ABCD, GR64_ABCD - Subclasses of
// GR8, GR16, GR32, and GR64 which contain just the "a" "b", "c", and "d"
// that support 8-bit subreg operations. On x86-64, GR16_ABCD, GR32_ABCD,
// and GR64_ABCD are classes for registers that support 8-bit h-register
// operations.
-def GR8_ABCD_L : RegisterClass<"X86", [i8], 8, [AL, CL, DL, BL]> {
-}
-def GR8_ABCD_H : RegisterClass<"X86", [i8], 8, [AH, CH, DH, BH]> {
-}
-def GR16_ABCD : RegisterClass<"X86", [i16], 16, [AX, CX, DX, BX]> {
- let SubRegClassList = [GR8_ABCD_L, GR8_ABCD_H];
-}
-def GR32_ABCD : RegisterClass<"X86", [i32], 32, [EAX, ECX, EDX, EBX]> {
- let SubRegClassList = [GR8_ABCD_L, GR8_ABCD_H, GR16_ABCD];
-}
-def GR64_ABCD : RegisterClass<"X86", [i64], 64, [RAX, RCX, RDX, RBX]> {
- let SubRegClassList = [GR8_ABCD_L, GR8_ABCD_H, GR16_ABCD, GR32_ABCD];
-}
-
-// GR8_NOREX, GR16_NOREX, GR32_NOREX, GR64_NOREX - Subclasses of
-// GR8, GR16, GR32, and GR64 which contain only the first 8 GPRs.
-// On x86-64, GR64_NOREX, GR32_NOREX and GR16_NOREX are the classes
-// of registers which do not by themselves require a REX prefix.
+def GR8_ABCD_L : RegisterClass<"X86", [i8], 8, (add AL, CL, DL, BL)>;
+def GR8_ABCD_H : RegisterClass<"X86", [i8], 8, (add AH, CH, DH, BH)>;
+def GR16_ABCD : RegisterClass<"X86", [i16], 16, (add AX, CX, DX, BX)>;
+def GR32_ABCD : RegisterClass<"X86", [i32], 32, (add EAX, ECX, EDX, EBX)>;
+def GR64_ABCD : RegisterClass<"X86", [i64], 64, (add RAX, RCX, RDX, RBX)>;
+def GR32_TC : RegisterClass<"X86", [i32], 32, (add EAX, ECX, EDX)>;
+def GR64_TC : RegisterClass<"X86", [i64], 64, (add RAX, RCX, RDX, RSI, RDI,
+ R8, R9, R11, RIP)>;
+def GR64_TCW64 : RegisterClass<"X86", [i64], 64, (add RAX, RCX, RDX,
+ R8, R9, R11)>;
+
+// GR8_NOREX - GR8 registers which do not require a REX prefix.
def GR8_NOREX : RegisterClass<"X86", [i8], 8,
- [AL, CL, DL, AH, CH, DH, BL, BH,
- SIL, DIL, BPL, SPL]> {
- let MethodProtos = [{
- iterator allocation_order_begin(const MachineFunction &MF) const;
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- static const unsigned X86_GR8_NOREX_AO_64[] = {
- X86::AL, X86::CL, X86::DL, X86::SIL, X86::DIL, X86::BL, X86::BPL
- };
-
- GR8_NOREXClass::iterator
- GR8_NOREXClass::allocation_order_begin(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit())
- return X86_GR8_NOREX_AO_64;
- else
- return begin();
- }
-
- GR8_NOREXClass::iterator
- GR8_NOREXClass::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- // Does the function dedicate RBP / EBP to being a frame ptr?
- if (!Subtarget.is64Bit())
- // In 32-mode, none of the 8-bit registers aliases EBP or ESP.
- return begin() + 8;
- else if (RI->hasFP(MF))
- // If so, don't allocate SPL or BPL.
- return array_endof(X86_GR8_NOREX_AO_64) - 1;
- else
- // If not, just don't allocate SPL.
- return array_endof(X86_GR8_NOREX_AO_64);
- }
+ (add AL, CL, DL, AH, CH, DH, BL, BH)> {
+ let AltOrders = [(sub GR8_NOREX, AH, BH, CH, DH)];
+ let AltOrderSelect = [{
+ return MF.getTarget().getSubtarget<X86Subtarget>().is64Bit();
}];
}
+// GR16_NOREX - GR16 registers which do not require a REX prefix.
def GR16_NOREX : RegisterClass<"X86", [i16], 16,
- [AX, CX, DX, SI, DI, BX, BP, SP]> {
- let SubRegClassList = [GR8_NOREX, GR8_NOREX];
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- GR16_NOREXClass::iterator
- GR16_NOREXClass::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- // Does the function dedicate RBP / EBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate SP or BP.
- return end() - 2;
- else
- // If not, just don't allocate SP.
- return end() - 1;
- }
- }];
-}
+ (add AX, CX, DX, SI, DI, BX, BP, SP)>;
// GR32_NOREX - GR32 registers which do not require a REX prefix.
def GR32_NOREX : RegisterClass<"X86", [i32], 32,
- [EAX, ECX, EDX, ESI, EDI, EBX, EBP, ESP]> {
- let SubRegClassList = [GR8_NOREX, GR8_NOREX, GR16_NOREX];
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- GR32_NOREXClass::iterator
- GR32_NOREXClass::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- // Does the function dedicate RBP / EBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate ESP or EBP.
- return end() - 2;
- else
- // If not, just don't allocate ESP.
- return end() - 1;
- }
- }];
-}
+ (add EAX, ECX, EDX, ESI, EDI, EBX, EBP, ESP)>;
// GR64_NOREX - GR64 registers which do not require a REX prefix.
def GR64_NOREX : RegisterClass<"X86", [i64], 64,
- [RAX, RCX, RDX, RSI, RDI, RBX, RBP, RSP, RIP]> {
- let SubRegClassList = [GR8_NOREX, GR8_NOREX, GR16_NOREX, GR32_NOREX];
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- GR64_NOREXClass::iterator
- GR64_NOREXClass::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- // Does the function dedicate RBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate RIP, RSP or RBP.
- return end() - 3;
- else
- // If not, just don't allocate RIP or RSP.
- return end() - 2;
- }
- }];
-}
+ (add RAX, RCX, RDX, RSI, RDI, RBX, RBP, RSP, RIP)>;
+
+// GR32_NOAX - GR32 registers except EAX. Used by AddRegFrm of XCHG32 in 64-bit
+// mode to prevent encoding using the 0x90 NOP encoding. xchg %eax, %eax needs
+// to clear upper 32-bits of RAX so is not a NOP.
+def GR32_NOAX : RegisterClass<"X86", [i32], 32, (sub GR32, EAX)>;
// GR32_NOSP - GR32 registers except ESP.
-def GR32_NOSP : RegisterClass<"X86", [i32], 32,
- [EAX, ECX, EDX, ESI, EDI, EBX, EBP,
- R8D, R9D, R10D, R11D, R14D, R15D, R12D, R13D]> {
- let SubRegClassList = [GR8, GR8, GR16];
- let MethodProtos = [{
- iterator allocation_order_begin(const MachineFunction &MF) const;
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- static const unsigned X86_GR32_NOSP_AO_64[] = {
- X86::EAX, X86::ECX, X86::EDX, X86::ESI, X86::EDI,
- X86::R8D, X86::R9D, X86::R10D, X86::R11D,
- X86::EBX, X86::R14D, X86::R15D, X86::R12D, X86::R13D, X86::EBP
- };
-
- GR32_NOSPClass::iterator
- GR32_NOSPClass::allocation_order_begin(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit())
- return X86_GR32_NOSP_AO_64;
- else
- return begin();
- }
-
- GR32_NOSPClass::iterator
- GR32_NOSPClass::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (Subtarget.is64Bit()) {
- // Does the function dedicate RBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate EBP.
- return array_endof(X86_GR32_NOSP_AO_64) - 1;
- else
- // If not, any reg in this class is ok.
- return array_endof(X86_GR32_NOSP_AO_64);
- } else {
- // Does the function dedicate EBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate EBP.
- return begin() + 6;
- else
- // If not, any reg in this class is ok.
- return begin() + 7;
- }
- }
- }];
-}
+def GR32_NOSP : RegisterClass<"X86", [i32], 32, (sub GR32, ESP)>;
// GR64_NOSP - GR64 registers except RSP (and RIP).
-def GR64_NOSP : RegisterClass<"X86", [i64], 64,
- [RAX, RCX, RDX, RSI, RDI, R8, R9, R10, R11,
- RBX, R14, R15, R12, R13, RBP]> {
- let SubRegClassList = [GR8, GR8, GR16, GR32_NOSP];
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- GR64_NOSPClass::iterator
- GR64_NOSPClass::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (!Subtarget.is64Bit())
- return begin(); // None of these are allocatable in 32-bit.
- if (RI->hasFP(MF)) // Does the function dedicate RBP to being a frame ptr?
- return end()-1; // If so, don't allocate RBP
- else
- return end(); // If not, any reg in this class is ok.
- }
- }];
-}
+def GR64_NOSP : RegisterClass<"X86", [i64], 64, (sub GR64, RSP, RIP)>;
+
+// GR32_NOREX_NOSP - GR32 registers which do not require a REX prefix except
+// ESP.
+def GR32_NOREX_NOSP : RegisterClass<"X86", [i32], 32,
+ (and GR32_NOREX, GR32_NOSP)>;
// GR64_NOREX_NOSP - GR64_NOREX registers except RSP.
def GR64_NOREX_NOSP : RegisterClass<"X86", [i64], 64,
- [RAX, RCX, RDX, RSI, RDI, RBX, RBP]> {
- let SubRegClassList = [GR8_NOREX, GR8_NOREX, GR16_NOREX, GR32_NOREX];
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- GR64_NOREX_NOSPClass::iterator
- GR64_NOREX_NOSPClass::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const TargetRegisterInfo *RI = TM.getRegisterInfo();
- // Does the function dedicate RBP to being a frame ptr?
- if (RI->hasFP(MF))
- // If so, don't allocate RBP.
- return end() - 1;
- else
- // If not, any reg in this class is ok.
- return end();
- }
- }];
-}
+ (and GR64_NOREX, GR64_NOSP)>;
// A class to support the 'A' assembler constraint: EAX then EDX.
-def GR32_AD : RegisterClass<"X86", [i32], 32, [EAX, EDX]> {
- let SubRegClassList = [GR8_ABCD_L, GR8_ABCD_H, GR16_ABCD];
-}
+def GR32_AD : RegisterClass<"X86", [i32], 32, (add EAX, EDX)>;
// Scalar SSE2 floating point registers.
-def FR32 : RegisterClass<"X86", [f32], 32,
- [XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
- XMM8, XMM9, XMM10, XMM11,
- XMM12, XMM13, XMM14, XMM15]> {
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- FR32Class::iterator
- FR32Class::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (!Subtarget.is64Bit())
- return end()-8; // Only XMM0 to XMM7 are available in 32-bit mode.
- else
- return end();
- }
- }];
-}
+def FR32 : RegisterClass<"X86", [f32], 32, (sequence "XMM%u", 0, 15)>;
-def FR64 : RegisterClass<"X86", [f64], 64,
- [XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
- XMM8, XMM9, XMM10, XMM11,
- XMM12, XMM13, XMM14, XMM15]> {
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- FR64Class::iterator
- FR64Class::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (!Subtarget.is64Bit())
- return end()-8; // Only XMM0 to XMM7 are available in 32-bit mode.
- else
- return end();
- }
- }];
-}
+def FR64 : RegisterClass<"X86", [f64], 64, (add FR32)>;
// FIXME: This sets up the floating point register files as though they are f64
// faster on common hardware. In reality, this should be controlled by a
// command line option or something.
-def RFP32 : RegisterClass<"X86",[f32], 32, [FP0, FP1, FP2, FP3, FP4, FP5, FP6]>;
-def RFP64 : RegisterClass<"X86",[f64], 32, [FP0, FP1, FP2, FP3, FP4, FP5, FP6]>;
-def RFP80 : RegisterClass<"X86",[f80], 32, [FP0, FP1, FP2, FP3, FP4, FP5, FP6]>;
+def RFP32 : RegisterClass<"X86",[f32], 32, (sequence "FP%u", 0, 6)>;
+def RFP64 : RegisterClass<"X86",[f64], 32, (add RFP32)>;
+def RFP80 : RegisterClass<"X86",[f80], 32, (add RFP32)>;
// Floating point stack registers (these are not allocatable by the
// register allocator - the floating point stackifier is responsible
// for transforming FPn allocations to STn registers)
-def RST : RegisterClass<"X86", [f80, f64, f32], 32,
- [ST0, ST1, ST2, ST3, ST4, ST5, ST6, ST7]> {
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- RSTClass::iterator
- RSTClass::allocation_order_end(const MachineFunction &MF) const {
- return begin();
- }
- }];
+def RST : RegisterClass<"X86", [f80, f64, f32], 32, (sequence "ST%u", 0, 7)> {
+ let isAllocatable = 0;
}
// Generic vector registers: VR64 and VR128.
-def VR64 : RegisterClass<"X86", [v8i8, v4i16, v2i32, v1i64, v2f32], 64,
- [MM0, MM1, MM2, MM3, MM4, MM5, MM6, MM7]>;
-def VR128 : RegisterClass<"X86", [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],128,
- [XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
- XMM8, XMM9, XMM10, XMM11,
- XMM12, XMM13, XMM14, XMM15]> {
- let MethodProtos = [{
- iterator allocation_order_end(const MachineFunction &MF) const;
- }];
- let MethodBodies = [{
- VR128Class::iterator
- VR128Class::allocation_order_end(const MachineFunction &MF) const {
- const TargetMachine &TM = MF.getTarget();
- const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
- if (!Subtarget.is64Bit())
- return end()-8; // Only XMM0 to XMM7 are available in 32-bit mode.
- else
- return end();
- }
- }];
-}
-def VR256 : RegisterClass<"X86", [ v8i32, v4i64, v8f32, v4f64],256,
- [YMM0, YMM1, YMM2, YMM3, YMM4, YMM5, YMM6, YMM7,
- YMM8, YMM9, YMM10, YMM11,
- YMM12, YMM13, YMM14, YMM15]>;
+def VR64: RegisterClass<"X86", [x86mmx], 64, (sequence "MM%u", 0, 7)>;
+def VR128 : RegisterClass<"X86", [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
+ 128, (add FR32)>;
+def VR256 : RegisterClass<"X86", [v32i8, v16i16, v8i32, v4i64, v8f32, v4f64],
+ 256, (sequence "YMM%u", 0, 15)>;
// Status flags registers.
-def CCR : RegisterClass<"X86", [i32], 32, [EFLAGS]> {
+def CCR : RegisterClass<"X86", [i32], 32, (add EFLAGS)> {
+ let CopyCost = -1; // Don't allow copying of status registers.
+ let isAllocatable = 0;
+}
+def FPCCR : RegisterClass<"X86", [i16], 16, (add FPSW)> {
let CopyCost = -1; // Don't allow copying of status registers.
+ let isAllocatable = 0;
}
+
+// AVX-512 vector/mask registers.
+def VR512 : RegisterClass<"X86", [v16f32, v8f64, v16i32, v8i64], 512,
+ (sequence "ZMM%u", 0, 31)>;
+
+// Scalar AVX-512 floating point registers.
+def FR32X : RegisterClass<"X86", [f32], 32, (sequence "XMM%u", 0, 31)>;
+
+def FR64X : RegisterClass<"X86", [f64], 64, (add FR32X)>;
+
+// Extended VR128 and VR256 for AVX-512 instructions
+def VR128X : RegisterClass<"X86", [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
+ 128, (add FR32X)>;
+def VR256X : RegisterClass<"X86", [v32i8, v16i16, v8i32, v4i64, v8f32, v4f64],
+ 256, (sequence "YMM%u", 0, 31)>;
+
+def VK8 : RegisterClass<"X86", [v8i1], 8, (sequence "K%u", 0, 7)>;
+def VK16 : RegisterClass<"X86", [v16i1], 16, (add VK8)>;
+
+def VK8WM : RegisterClass<"X86", [v8i1], 8, (sub VK8, K0)>;
+def VK16WM : RegisterClass<"X86", [v16i1], 16, (add VK8WM)>;
+
projects / oota-llvm.git / blobdiff