llvm-6502/lib/Target/X86/X86Schedule.td

//===-- X86Schedule.td - X86 Scheduling Definitions --------*- tablegen -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// InstrSchedModel annotations for out-of-order CPUs.
//
// These annotations are independent of the itinerary classes defined below.

// Instructions with folded loads need to read the memory operand immediately,
// but other register operands don't have to be read until the load is ready.
// These operands are marked with ReadAfterLd.
def ReadAfterLd : SchedRead;

// Instructions with both a load and a store folded are modeled as a folded
// load + WriteRMW.
def WriteRMW : SchedWrite;

// Most instructions can fold loads, so almost every SchedWrite comes in two
// variants: With and without a folded load.
// An X86FoldableSchedWrite holds a reference to the corresponding SchedWrite
// with a folded load.
class X86FoldableSchedWrite : SchedWrite {
  // The SchedWrite to use when a load is folded into the instruction.
  SchedWrite Folded;
}

// Multiclass that produces a linked pair of SchedWrites.
multiclass X86SchedWritePair {
  // Register-Memory operation.
  def Ld : SchedWrite;
  // Register-Register operation.
  def NAME : X86FoldableSchedWrite {
    let Folded = !cast<SchedWrite>(NAME#"Ld");
  }
}

// Arithmetic.
defm WriteALU  : X86SchedWritePair; // Simple integer ALU op.
defm WriteIMul : X86SchedWritePair; // Integer multiplication.
defm WriteIDiv : X86SchedWritePair; // Integer division.
def  WriteLEA  : SchedWrite;        // LEA instructions can't fold loads.

// Integer shifts and rotates.
defm WriteShift : X86SchedWritePair;

// Loads, stores, and moves, not folded with other operations.
def WriteLoad  : SchedWrite;
def WriteStore : SchedWrite;
def WriteMove  : SchedWrite;

// Idioms that clear a register, like xorps %xmm0, %xmm0.
// These can often bypass execution ports completely.
def WriteZero : SchedWrite;

// Branches don't produce values, so they have no latency, but they still
// consume resources. Indirect branches can fold loads.
defm WriteJump : X86SchedWritePair;

// Floating point. This covers both scalar and vector operations.
defm WriteFAdd  : X86SchedWritePair; // Floating point add/sub/compare.
defm WriteFMul  : X86SchedWritePair; // Floating point multiplication.
defm WriteFDiv  : X86SchedWritePair; // Floating point division.
defm WriteFSqrt : X86SchedWritePair; // Floating point square root.
defm WriteFRcp  : X86SchedWritePair; // Floating point reciprocal.

// Vector integer operations.
defm WriteVecALU   : X86SchedWritePair; // Vector integer ALU op, no logicals.
defm WriteVecShift : X86SchedWritePair; // Vector integer shifts.
defm WriteVecIMul  : X86SchedWritePair; // Vector integer multiply.

// Vector bitwise operations.
// These are often used on both floating point and integer vectors.
defm WriteVecLogic : X86SchedWritePair; // Vector and/or/xor.
defm WriteShuffle  : X86SchedWritePair; // Vector shuffles and blends.

// Conversion between integer and float.
defm WriteCvtF2I : X86SchedWritePair; // Float -> Integer.
defm WriteCvtI2F : X86SchedWritePair; // Integer -> Float.
defm WriteCvtF2F : X86SchedWritePair; // Float -> Float size conversion.

// Catch-all for expensive system instructions.
def WriteSystem : SchedWrite;

// Old microcoded instructions that nobody use.
def WriteMicrocoded : SchedWrite;

//===----------------------------------------------------------------------===//
// Instruction Itinerary classes used for X86
def IIC_ALU_MEM     : InstrItinClass;
def IIC_ALU_NONMEM  : InstrItinClass;
def IIC_LEA         : InstrItinClass;
def IIC_LEA_16      : InstrItinClass;
def IIC_MUL8        : InstrItinClass;
def IIC_MUL16_MEM   : InstrItinClass;
def IIC_MUL16_REG   : InstrItinClass;
def IIC_MUL32_MEM   : InstrItinClass;
def IIC_MUL32_REG   : InstrItinClass;
def IIC_MUL64       : InstrItinClass;
// imul by al, ax, eax, tax
def IIC_IMUL8       : InstrItinClass;
def IIC_IMUL16_MEM  : InstrItinClass;
def IIC_IMUL16_REG  : InstrItinClass;
def IIC_IMUL32_MEM  : InstrItinClass;
def IIC_IMUL32_REG  : InstrItinClass;
def IIC_IMUL64      : InstrItinClass;
// imul reg by reg|mem
def IIC_IMUL16_RM   : InstrItinClass;
def IIC_IMUL16_RR   : InstrItinClass;
def IIC_IMUL32_RM   : InstrItinClass;
def IIC_IMUL32_RR   : InstrItinClass;
def IIC_IMUL64_RM   : InstrItinClass;
def IIC_IMUL64_RR   : InstrItinClass;
// imul reg = reg/mem * imm
def IIC_IMUL16_RMI  : InstrItinClass;
def IIC_IMUL16_RRI  : InstrItinClass;
def IIC_IMUL32_RMI  : InstrItinClass;
def IIC_IMUL32_RRI  : InstrItinClass;
def IIC_IMUL64_RMI  : InstrItinClass;
def IIC_IMUL64_RRI  : InstrItinClass;
// div
def IIC_DIV8_MEM    : InstrItinClass;
def IIC_DIV8_REG    : InstrItinClass;
def IIC_DIV16       : InstrItinClass;
def IIC_DIV32       : InstrItinClass;
def IIC_DIV64       : InstrItinClass;
// idiv
def IIC_IDIV8       : InstrItinClass;
def IIC_IDIV16      : InstrItinClass;
def IIC_IDIV32      : InstrItinClass;
def IIC_IDIV64      : InstrItinClass;
// neg/not/inc/dec
def IIC_UNARY_REG   : InstrItinClass;
def IIC_UNARY_MEM   : InstrItinClass;
// add/sub/and/or/xor/adc/sbc/cmp/test
def IIC_BIN_MEM     : InstrItinClass;
def IIC_BIN_NONMEM  : InstrItinClass;
// shift/rotate
def IIC_SR          : InstrItinClass;
// shift double
def IIC_SHD16_REG_IM : InstrItinClass;
def IIC_SHD16_REG_CL : InstrItinClass;
def IIC_SHD16_MEM_IM : InstrItinClass;
def IIC_SHD16_MEM_CL : InstrItinClass;
def IIC_SHD32_REG_IM : InstrItinClass;
def IIC_SHD32_REG_CL : InstrItinClass;
def IIC_SHD32_MEM_IM : InstrItinClass;
def IIC_SHD32_MEM_CL : InstrItinClass;
def IIC_SHD64_REG_IM : InstrItinClass;
def IIC_SHD64_REG_CL : InstrItinClass;
def IIC_SHD64_MEM_IM : InstrItinClass;
def IIC_SHD64_MEM_CL : InstrItinClass;
// cmov
def IIC_CMOV16_RM : InstrItinClass;
def IIC_CMOV16_RR : InstrItinClass;
def IIC_CMOV32_RM : InstrItinClass;
def IIC_CMOV32_RR : InstrItinClass;
def IIC_CMOV64_RM : InstrItinClass;
def IIC_CMOV64_RR : InstrItinClass;
// set
def IIC_SET_R : InstrItinClass;
def IIC_SET_M : InstrItinClass;
// jmp/jcc/jcxz
def IIC_Jcc : InstrItinClass;
def IIC_JCXZ : InstrItinClass;
def IIC_JMP_REL : InstrItinClass;
def IIC_JMP_REG : InstrItinClass;
def IIC_JMP_MEM : InstrItinClass;
def IIC_JMP_FAR_MEM : InstrItinClass;
def IIC_JMP_FAR_PTR : InstrItinClass;
// loop
def IIC_LOOP : InstrItinClass;
def IIC_LOOPE : InstrItinClass;
def IIC_LOOPNE : InstrItinClass;
// call
def IIC_CALL_RI : InstrItinClass;
def IIC_CALL_MEM : InstrItinClass;
def IIC_CALL_FAR_MEM : InstrItinClass;
def IIC_CALL_FAR_PTR : InstrItinClass;
// ret
def IIC_RET : InstrItinClass;
def IIC_RET_IMM : InstrItinClass;
//sign extension movs
def IIC_MOVSX : InstrItinClass;
def IIC_MOVSX_R16_R8 : InstrItinClass;
def IIC_MOVSX_R16_M8 : InstrItinClass;
def IIC_MOVSX_R16_R16 : InstrItinClass;
def IIC_MOVSX_R32_R32 : InstrItinClass;
//zero extension movs
def IIC_MOVZX : InstrItinClass;
def IIC_MOVZX_R16_R8 : InstrItinClass;
def IIC_MOVZX_R16_M8 : InstrItinClass;

def IIC_REP_MOVS : InstrItinClass;
def IIC_REP_STOS : InstrItinClass;

// SSE scalar/parallel binary operations
def IIC_SSE_ALU_F32S_RR : InstrItinClass;
def IIC_SSE_ALU_F32S_RM : InstrItinClass;
def IIC_SSE_ALU_F64S_RR : InstrItinClass;
def IIC_SSE_ALU_F64S_RM : InstrItinClass;
def IIC_SSE_MUL_F32S_RR : InstrItinClass;
def IIC_SSE_MUL_F32S_RM : InstrItinClass;
def IIC_SSE_MUL_F64S_RR : InstrItinClass;
def IIC_SSE_MUL_F64S_RM : InstrItinClass;
def IIC_SSE_DIV_F32S_RR : InstrItinClass;
def IIC_SSE_DIV_F32S_RM : InstrItinClass;
def IIC_SSE_DIV_F64S_RR : InstrItinClass;
def IIC_SSE_DIV_F64S_RM : InstrItinClass;
def IIC_SSE_ALU_F32P_RR : InstrItinClass;
def IIC_SSE_ALU_F32P_RM : InstrItinClass;
def IIC_SSE_ALU_F64P_RR : InstrItinClass;
def IIC_SSE_ALU_F64P_RM : InstrItinClass;
def IIC_SSE_MUL_F32P_RR : InstrItinClass;
def IIC_SSE_MUL_F32P_RM : InstrItinClass;
def IIC_SSE_MUL_F64P_RR : InstrItinClass;
def IIC_SSE_MUL_F64P_RM : InstrItinClass;
def IIC_SSE_DIV_F32P_RR : InstrItinClass;
def IIC_SSE_DIV_F32P_RM : InstrItinClass;
def IIC_SSE_DIV_F64P_RR : InstrItinClass;
def IIC_SSE_DIV_F64P_RM : InstrItinClass;

def IIC_SSE_COMIS_RR : InstrItinClass;
def IIC_SSE_COMIS_RM : InstrItinClass;

def IIC_SSE_HADDSUB_RR : InstrItinClass;
def IIC_SSE_HADDSUB_RM : InstrItinClass;

def IIC_SSE_BIT_P_RR  : InstrItinClass;
def IIC_SSE_BIT_P_RM  : InstrItinClass;

def IIC_SSE_INTALU_P_RR  : InstrItinClass;
def IIC_SSE_INTALU_P_RM  : InstrItinClass;
def IIC_SSE_INTALUQ_P_RR  : InstrItinClass;
def IIC_SSE_INTALUQ_P_RM  : InstrItinClass;

def IIC_SSE_INTMUL_P_RR : InstrItinClass;
def IIC_SSE_INTMUL_P_RM : InstrItinClass;

def IIC_SSE_INTSH_P_RR : InstrItinClass;
def IIC_SSE_INTSH_P_RM : InstrItinClass;
def IIC_SSE_INTSH_P_RI : InstrItinClass;

def IIC_SSE_CMPP_RR : InstrItinClass;
def IIC_SSE_CMPP_RM : InstrItinClass;

def IIC_SSE_SHUFP : InstrItinClass;
def IIC_SSE_PSHUF : InstrItinClass;

def IIC_SSE_UNPCK : InstrItinClass;

def IIC_SSE_MOVMSK : InstrItinClass;
def IIC_SSE_MASKMOV : InstrItinClass;

def IIC_SSE_PEXTRW : InstrItinClass;
def IIC_SSE_PINSRW : InstrItinClass;

def IIC_SSE_PABS_RR : InstrItinClass;
def IIC_SSE_PABS_RM : InstrItinClass;

def IIC_SSE_SQRTP_RR : InstrItinClass;
def IIC_SSE_SQRTP_RM : InstrItinClass;
def IIC_SSE_SQRTS_RR : InstrItinClass;
def IIC_SSE_SQRTS_RM : InstrItinClass;

def IIC_SSE_RCPP_RR : InstrItinClass;
def IIC_SSE_RCPP_RM : InstrItinClass;
def IIC_SSE_RCPS_RR : InstrItinClass;
def IIC_SSE_RCPS_RM : InstrItinClass;

def IIC_SSE_MOV_S_RR : InstrItinClass;
def IIC_SSE_MOV_S_RM : InstrItinClass;
def IIC_SSE_MOV_S_MR : InstrItinClass;

def IIC_SSE_MOVA_P_RR : InstrItinClass;
def IIC_SSE_MOVA_P_RM : InstrItinClass;
def IIC_SSE_MOVA_P_MR : InstrItinClass;

def IIC_SSE_MOVU_P_RR : InstrItinClass;
def IIC_SSE_MOVU_P_RM : InstrItinClass;
def IIC_SSE_MOVU_P_MR : InstrItinClass;

def IIC_SSE_MOVDQ : InstrItinClass;
def IIC_SSE_MOVD_ToGP : InstrItinClass;
def IIC_SSE_MOVQ_RR : InstrItinClass;

def IIC_SSE_MOV_LH : InstrItinClass;

def IIC_SSE_LDDQU : InstrItinClass;

def IIC_SSE_MOVNT : InstrItinClass;

def IIC_SSE_PHADDSUBD_RR : InstrItinClass;
def IIC_SSE_PHADDSUBD_RM : InstrItinClass;
def IIC_SSE_PHADDSUBSW_RR : InstrItinClass;
def IIC_SSE_PHADDSUBSW_RM : InstrItinClass;
def IIC_SSE_PHADDSUBW_RR : InstrItinClass;
def IIC_SSE_PHADDSUBW_RM : InstrItinClass;
def IIC_SSE_PSHUFB_RR : InstrItinClass;
def IIC_SSE_PSHUFB_RM : InstrItinClass;
def IIC_SSE_PSIGN_RR : InstrItinClass;
def IIC_SSE_PSIGN_RM : InstrItinClass;

def IIC_SSE_PMADD : InstrItinClass;
def IIC_SSE_PMULHRSW : InstrItinClass;
def IIC_SSE_PALIGNR : InstrItinClass;
def IIC_SSE_MWAIT : InstrItinClass;
def IIC_SSE_MONITOR : InstrItinClass;

def IIC_SSE_PREFETCH : InstrItinClass;
def IIC_SSE_PAUSE : InstrItinClass;
def IIC_SSE_LFENCE : InstrItinClass;
def IIC_SSE_MFENCE : InstrItinClass;
def IIC_SSE_SFENCE : InstrItinClass;
def IIC_SSE_LDMXCSR : InstrItinClass;
def IIC_SSE_STMXCSR : InstrItinClass;

def IIC_SSE_CVT_PD_RR : InstrItinClass;
def IIC_SSE_CVT_PD_RM : InstrItinClass;
def IIC_SSE_CVT_PS_RR : InstrItinClass;
def IIC_SSE_CVT_PS_RM : InstrItinClass;
def IIC_SSE_CVT_PI2PS_RR : InstrItinClass;
def IIC_SSE_CVT_PI2PS_RM : InstrItinClass;
def IIC_SSE_CVT_Scalar_RR : InstrItinClass;
def IIC_SSE_CVT_Scalar_RM : InstrItinClass;
def IIC_SSE_CVT_SS2SI32_RM : InstrItinClass;
def IIC_SSE_CVT_SS2SI32_RR : InstrItinClass;
def IIC_SSE_CVT_SS2SI64_RM : InstrItinClass;
def IIC_SSE_CVT_SS2SI64_RR : InstrItinClass;
def IIC_SSE_CVT_SD2SI_RM : InstrItinClass;
def IIC_SSE_CVT_SD2SI_RR : InstrItinClass;

// MMX
def IIC_MMX_MOV_MM_RM : InstrItinClass;
def IIC_MMX_MOV_REG_MM : InstrItinClass;
def IIC_MMX_MOVQ_RM : InstrItinClass;
def IIC_MMX_MOVQ_RR : InstrItinClass;

def IIC_MMX_ALU_RM : InstrItinClass;
def IIC_MMX_ALU_RR : InstrItinClass;
def IIC_MMX_ALUQ_RM : InstrItinClass;
def IIC_MMX_ALUQ_RR : InstrItinClass;
def IIC_MMX_PHADDSUBW_RM : InstrItinClass;
def IIC_MMX_PHADDSUBW_RR : InstrItinClass;
def IIC_MMX_PHADDSUBD_RM : InstrItinClass;
def IIC_MMX_PHADDSUBD_RR : InstrItinClass;
def IIC_MMX_PMUL : InstrItinClass;
def IIC_MMX_MISC_FUNC_MEM : InstrItinClass;
def IIC_MMX_MISC_FUNC_REG : InstrItinClass;
def IIC_MMX_PSADBW : InstrItinClass;
def IIC_MMX_SHIFT_RI : InstrItinClass;
def IIC_MMX_SHIFT_RM : InstrItinClass;
def IIC_MMX_SHIFT_RR : InstrItinClass;
def IIC_MMX_UNPCK_H_RM : InstrItinClass;
def IIC_MMX_UNPCK_H_RR : InstrItinClass;
def IIC_MMX_UNPCK_L : InstrItinClass;
def IIC_MMX_PCK_RM : InstrItinClass;
def IIC_MMX_PCK_RR : InstrItinClass;
def IIC_MMX_PSHUF : InstrItinClass;
def IIC_MMX_PEXTR : InstrItinClass;
def IIC_MMX_PINSRW : InstrItinClass;
def IIC_MMX_MASKMOV : InstrItinClass;

def IIC_MMX_CVT_PD_RR : InstrItinClass;
def IIC_MMX_CVT_PD_RM : InstrItinClass;
def IIC_MMX_CVT_PS_RR : InstrItinClass;
def IIC_MMX_CVT_PS_RM : InstrItinClass;

def IIC_CMPX_LOCK : InstrItinClass;
def IIC_CMPX_LOCK_8 : InstrItinClass;
def IIC_CMPX_LOCK_8B : InstrItinClass;
def IIC_CMPX_LOCK_16B : InstrItinClass;

def IIC_XADD_LOCK_MEM : InstrItinClass;
def IIC_XADD_LOCK_MEM8 : InstrItinClass;

def IIC_FILD : InstrItinClass;
def IIC_FLD : InstrItinClass;
def IIC_FLD80 : InstrItinClass;
def IIC_FST : InstrItinClass;
def IIC_FST80 : InstrItinClass;
def IIC_FIST : InstrItinClass;
def IIC_FLDZ : InstrItinClass;
def IIC_FUCOM : InstrItinClass;
def IIC_FUCOMI : InstrItinClass;
def IIC_FCOMI : InstrItinClass;
def IIC_FNSTSW : InstrItinClass;
def IIC_FNSTCW : InstrItinClass;
def IIC_FLDCW : InstrItinClass;
def IIC_FNINIT : InstrItinClass;
def IIC_FFREE : InstrItinClass;
def IIC_FNCLEX : InstrItinClass;
def IIC_WAIT : InstrItinClass;
def IIC_FXAM : InstrItinClass;
def IIC_FNOP : InstrItinClass;
def IIC_FLDL : InstrItinClass;
def IIC_F2XM1 : InstrItinClass;
def IIC_FYL2X : InstrItinClass;
def IIC_FPTAN : InstrItinClass;
def IIC_FPATAN : InstrItinClass;
def IIC_FXTRACT : InstrItinClass;
def IIC_FPREM1 : InstrItinClass;
def IIC_FPSTP : InstrItinClass;
def IIC_FPREM : InstrItinClass;
def IIC_FYL2XP1 : InstrItinClass;
def IIC_FSINCOS : InstrItinClass;
def IIC_FRNDINT : InstrItinClass;
def IIC_FSCALE : InstrItinClass;
def IIC_FCOMPP : InstrItinClass;
def IIC_FXSAVE : InstrItinClass;
def IIC_FXRSTOR : InstrItinClass;

def IIC_FXCH : InstrItinClass;

// System instructions
def IIC_CPUID : InstrItinClass;
def IIC_INT : InstrItinClass;
def IIC_INT3 : InstrItinClass;
def IIC_INVD : InstrItinClass;
def IIC_INVLPG : InstrItinClass;
def IIC_IRET : InstrItinClass;
def IIC_HLT : InstrItinClass;
def IIC_LXS : InstrItinClass;
def IIC_LTR : InstrItinClass;
def IIC_RDTSC : InstrItinClass;
def IIC_RSM : InstrItinClass;
def IIC_SIDT : InstrItinClass;
def IIC_SGDT : InstrItinClass;
def IIC_SLDT : InstrItinClass;
def IIC_STR : InstrItinClass;
def IIC_SWAPGS : InstrItinClass;
def IIC_SYSCALL : InstrItinClass;
def IIC_SYS_ENTER_EXIT : InstrItinClass;
def IIC_IN_RR : InstrItinClass;
def IIC_IN_RI : InstrItinClass;
def IIC_OUT_RR : InstrItinClass;
def IIC_OUT_IR : InstrItinClass;
def IIC_INS : InstrItinClass;
def IIC_MOV_REG_DR : InstrItinClass;
def IIC_MOV_DR_REG : InstrItinClass;
def IIC_MOV_REG_CR : InstrItinClass;
def IIC_MOV_CR_REG : InstrItinClass;
def IIC_MOV_REG_SR : InstrItinClass;
def IIC_MOV_MEM_SR : InstrItinClass;
def IIC_MOV_SR_REG : InstrItinClass;
def IIC_MOV_SR_MEM : InstrItinClass;
def IIC_LAR_RM : InstrItinClass;
def IIC_LAR_RR : InstrItinClass;
def IIC_LSL_RM : InstrItinClass;
def IIC_LSL_RR : InstrItinClass;
def IIC_LGDT : InstrItinClass;
def IIC_LIDT : InstrItinClass;
def IIC_LLDT_REG : InstrItinClass;
def IIC_LLDT_MEM : InstrItinClass;
def IIC_PUSH_CS : InstrItinClass;
def IIC_PUSH_SR : InstrItinClass;
def IIC_POP_SR : InstrItinClass;
def IIC_POP_SR_SS : InstrItinClass;
def IIC_VERR : InstrItinClass;
def IIC_VERW_REG : InstrItinClass;
def IIC_VERW_MEM : InstrItinClass;
def IIC_WRMSR : InstrItinClass;
def IIC_RDMSR : InstrItinClass;
def IIC_RDPMC : InstrItinClass;
def IIC_SMSW : InstrItinClass;
def IIC_LMSW_REG : InstrItinClass;
def IIC_LMSW_MEM : InstrItinClass;
def IIC_ENTER : InstrItinClass;
def IIC_LEAVE : InstrItinClass;
def IIC_POP_MEM : InstrItinClass;
def IIC_POP_REG16 : InstrItinClass;
def IIC_POP_REG : InstrItinClass;
def IIC_POP_F : InstrItinClass;
def IIC_POP_FD : InstrItinClass;
def IIC_POP_A : InstrItinClass;
def IIC_PUSH_IMM : InstrItinClass;
def IIC_PUSH_MEM : InstrItinClass;
def IIC_PUSH_REG : InstrItinClass;
def IIC_PUSH_F : InstrItinClass;
def IIC_PUSH_A : InstrItinClass;
def IIC_BSWAP : InstrItinClass;
def IIC_BSF : InstrItinClass;
def IIC_BSR : InstrItinClass;
def IIC_MOVS : InstrItinClass;
def IIC_STOS : InstrItinClass;
def IIC_SCAS : InstrItinClass;
def IIC_CMPS : InstrItinClass;
def IIC_MOV : InstrItinClass;
def IIC_MOV_MEM : InstrItinClass;
def IIC_AHF : InstrItinClass;
def IIC_BT_MI : InstrItinClass;
def IIC_BT_MR : InstrItinClass;
def IIC_BT_RI : InstrItinClass;
def IIC_BT_RR : InstrItinClass;
def IIC_BTX_MI : InstrItinClass;
def IIC_BTX_MR : InstrItinClass;
def IIC_BTX_RI : InstrItinClass;
def IIC_BTX_RR : InstrItinClass;
def IIC_XCHG_REG : InstrItinClass;
def IIC_XCHG_MEM : InstrItinClass;
def IIC_XADD_REG : InstrItinClass;
def IIC_XADD_MEM : InstrItinClass;
def IIC_CMPXCHG_MEM : InstrItinClass;
def IIC_CMPXCHG_REG : InstrItinClass;
def IIC_CMPXCHG_MEM8 : InstrItinClass;
def IIC_CMPXCHG_REG8 : InstrItinClass;
def IIC_CMPXCHG_8B : InstrItinClass;
def IIC_CMPXCHG_16B : InstrItinClass;
def IIC_LODS : InstrItinClass;
def IIC_OUTS : InstrItinClass;
def IIC_CLC : InstrItinClass;
def IIC_CLD : InstrItinClass;
def IIC_CLI : InstrItinClass;
def IIC_CMC : InstrItinClass;
def IIC_CLTS : InstrItinClass;
def IIC_STC : InstrItinClass;
def IIC_STI : InstrItinClass;
def IIC_STD : InstrItinClass;
def IIC_XLAT : InstrItinClass;
def IIC_AAA : InstrItinClass;
def IIC_AAD : InstrItinClass;
def IIC_AAM : InstrItinClass;
def IIC_AAS : InstrItinClass;
def IIC_DAA : InstrItinClass;
def IIC_DAS : InstrItinClass;
def IIC_BOUND : InstrItinClass;
def IIC_ARPL_REG : InstrItinClass;
def IIC_ARPL_MEM : InstrItinClass;
def IIC_MOVBE : InstrItinClass;

def IIC_NOP : InstrItinClass;

//===----------------------------------------------------------------------===//
// Processor instruction itineraries.

// IssueWidth is analagous to the number of decode units. Core and its
// descendents, including Nehalem and SandyBridge have 4 decoders.
// Resources beyond the decoder operate on micro-ops and are bufferred
// so adjacent micro-ops don't directly compete.
//
// MinLatency=0 indicates that RAW dependencies can be decoded in the
// same cycle.
//
// HighLatency=10 is optimistic. X86InstrInfo::isHighLatencyDef
// indicates high latency opcodes. Alternatively, InstrItinData
// entries may be included here to define specific operand
// latencies. Since these latencies are not used for pipeline hazards,
// they do not need to be exact.
//
// ILPWindow=10 is an arbitrary threshold that approximates cycles of
// latency hidden by instruction buffers. The actual value is not very
// important but should be zero for inorder and nonzero for OOO processors.
//
// The GenericModel contains no instruciton itineraries.
def GenericModel : SchedMachineModel {
  let IssueWidth = 4;
  let MinLatency = 0;
  let LoadLatency = 4;
  let HighLatency = 10;
  let ILPWindow = 10;
}

include "X86ScheduleAtom.td"
include "X86SchedSandyBridge.td"