lib/Target/PowerPC/PPCInstrInfo.td

//===- PPCInstrInfo.td - The PowerPC Instruction Set -------*- 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 subset of the 32-bit PowerPC instruction set, as used
// by the PowerPC instruction selector.
//
//===----------------------------------------------------------------------===//

include "PPCInstrFormats.td"

//===----------------------------------------------------------------------===//
// PowerPC specific type constraints.
//
def SDT_PPCstfiwx : SDTypeProfile<0, 2, [ // stfiwx
  SDTCisVT<0, f64>, SDTCisPtrTy<1>
]>;
def SDT_PPCCallSeqStart : SDCallSeqStart<[ SDTCisVT<0, i32> ]>;
def SDT_PPCCallSeqEnd   : SDCallSeqEnd<[ SDTCisVT<0, i32>,
                                         SDTCisVT<1, i32> ]>;
def SDT_PPCvperm   : SDTypeProfile<1, 3, [
  SDTCisVT<3, v16i8>, SDTCisSameAs<0, 1>, SDTCisSameAs<0, 2>
]>;

def SDT_PPCvcmp : SDTypeProfile<1, 3, [
  SDTCisSameAs<0, 1>, SDTCisSameAs<1, 2>, SDTCisVT<3, i32>
]>;

def SDT_PPCcondbr : SDTypeProfile<0, 3, [
  SDTCisVT<0, i32>, SDTCisVT<2, OtherVT>
]>;

def SDT_PPClbrx : SDTypeProfile<1, 2, [
  SDTCisVT<0, i32>, SDTCisPtrTy<1>, SDTCisVT<2, OtherVT>
]>;
def SDT_PPCstbrx : SDTypeProfile<0, 3, [
  SDTCisVT<0, i32>, SDTCisPtrTy<1>, SDTCisVT<2, OtherVT>
]>;

def SDT_PPClarx : SDTypeProfile<1, 1, [
  SDTCisInt<0>, SDTCisPtrTy<1>
]>;
def SDT_PPCstcx : SDTypeProfile<0, 2, [
  SDTCisInt<0>, SDTCisPtrTy<1>
]>;

def SDT_PPCTC_ret : SDTypeProfile<0, 2, [
  SDTCisPtrTy<0>, SDTCisVT<1, i32>
]>;

def SDT_PPCnop : SDTypeProfile<0, 0, []>;

//===----------------------------------------------------------------------===//
// PowerPC specific DAG Nodes.
//

def PPCfcfid  : SDNode<"PPCISD::FCFID" , SDTFPUnaryOp, []>;
def PPCfctidz : SDNode<"PPCISD::FCTIDZ", SDTFPUnaryOp, []>;
def PPCfctiwz : SDNode<"PPCISD::FCTIWZ", SDTFPUnaryOp, []>;
def PPCstfiwx : SDNode<"PPCISD::STFIWX", SDT_PPCstfiwx,
                       [SDNPHasChain, SDNPMayStore]>;

// This sequence is used for long double->int conversions.  It changes the
// bits in the FPSCR which is not modelled.  
def PPCmffs   : SDNode<"PPCISD::MFFS", SDTypeProfile<1, 0, [SDTCisVT<0, f64>]>,
                        [SDNPOutFlag]>;
def PPCmtfsb0 : SDNode<"PPCISD::MTFSB0", SDTypeProfile<0, 1, [SDTCisInt<0>]>,
                       [SDNPInFlag, SDNPOutFlag]>;
def PPCmtfsb1 : SDNode<"PPCISD::MTFSB1", SDTypeProfile<0, 1, [SDTCisInt<0>]>,
                       [SDNPInFlag, SDNPOutFlag]>;
def PPCfaddrtz: SDNode<"PPCISD::FADDRTZ", SDTFPBinOp,
                       [SDNPInFlag, SDNPOutFlag]>;
def PPCmtfsf  : SDNode<"PPCISD::MTFSF", SDTypeProfile<1, 3, 
                       [SDTCisVT<0, f64>, SDTCisInt<1>, SDTCisVT<2, f64>,
                        SDTCisVT<3, f64>]>,
                       [SDNPInFlag]>;

def PPCfsel   : SDNode<"PPCISD::FSEL",  
   // Type constraint for fsel.
   SDTypeProfile<1, 3, [SDTCisSameAs<0, 2>, SDTCisSameAs<0, 3>, 
                        SDTCisFP<0>, SDTCisVT<1, f64>]>, []>;

def PPChi       : SDNode<"PPCISD::Hi", SDTIntBinOp, []>;
def PPClo       : SDNode<"PPCISD::Lo", SDTIntBinOp, []>;
def PPCtoc_entry: SDNode<"PPCISD::TOC_ENTRY", SDTIntBinOp, [SDNPMayLoad]>;
def PPCvmaddfp  : SDNode<"PPCISD::VMADDFP", SDTFPTernaryOp, []>;
def PPCvnmsubfp : SDNode<"PPCISD::VNMSUBFP", SDTFPTernaryOp, []>;

def PPCvperm    : SDNode<"PPCISD::VPERM", SDT_PPCvperm, []>;

// These nodes represent the 32-bit PPC shifts that operate on 6-bit shift
// amounts.  These nodes are generated by the multi-precision shift code.
def PPCsrl        : SDNode<"PPCISD::SRL"       , SDTIntShiftOp>;
def PPCsra        : SDNode<"PPCISD::SRA"       , SDTIntShiftOp>;
def PPCshl        : SDNode<"PPCISD::SHL"       , SDTIntShiftOp>;

def PPCextsw_32   : SDNode<"PPCISD::EXTSW_32"  , SDTIntUnaryOp>;
def PPCstd_32     : SDNode<"PPCISD::STD_32"    , SDTStore,
                           [SDNPHasChain, SDNPMayStore]>;

// These are target-independent nodes, but have target-specific formats.
def callseq_start : SDNode<"ISD::CALLSEQ_START", SDT_PPCCallSeqStart,
                           [SDNPHasChain, SDNPOutFlag]>;
def callseq_end   : SDNode<"ISD::CALLSEQ_END",   SDT_PPCCallSeqEnd,
                           [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag]>;

def SDT_PPCCall   : SDTypeProfile<0, -1, [SDTCisInt<0>]>;
def PPCcall_Darwin : SDNode<"PPCISD::CALL_Darwin", SDT_PPCCall,
                            [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag,
                             SDNPVariadic]>;
def PPCcall_SVR4  : SDNode<"PPCISD::CALL_SVR4", SDT_PPCCall,
                           [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag,
                            SDNPVariadic]>;
def PPCnop : SDNode<"PPCISD::NOP", SDT_PPCnop, [SDNPInFlag, SDNPOutFlag]>;
def PPCload   : SDNode<"PPCISD::LOAD", SDTypeProfile<1, 1, []>,
                       [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag]>;
def PPCload_toc : SDNode<"PPCISD::LOAD_TOC", SDTypeProfile<0, 1, []>,
                          [SDNPHasChain, SDNPInFlag, SDNPOutFlag]>;
def PPCtoc_restore : SDNode<"PPCISD::TOC_RESTORE", SDTypeProfile<0, 0, []>,
                            [SDNPHasChain, SDNPInFlag, SDNPOutFlag]>;
def PPCmtctr      : SDNode<"PPCISD::MTCTR", SDT_PPCCall,
                           [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag]>;
def PPCbctrl_Darwin  : SDNode<"PPCISD::BCTRL_Darwin", SDTNone,
                              [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag,
                               SDNPVariadic]>;

def PPCbctrl_SVR4  : SDNode<"PPCISD::BCTRL_SVR4", SDTNone,
                            [SDNPHasChain, SDNPOptInFlag, SDNPOutFlag,
                             SDNPVariadic]>;

def retflag       : SDNode<"PPCISD::RET_FLAG", SDTNone,
                           [SDNPHasChain, SDNPOptInFlag, SDNPVariadic]>;

def PPCtc_return : SDNode<"PPCISD::TC_RETURN", SDT_PPCTC_ret,
                        [SDNPHasChain,  SDNPOptInFlag, SDNPVariadic]>;

def PPCvcmp       : SDNode<"PPCISD::VCMP" , SDT_PPCvcmp, []>;
def PPCvcmp_o     : SDNode<"PPCISD::VCMPo", SDT_PPCvcmp, [SDNPOutFlag]>;

def PPCcondbranch : SDNode<"PPCISD::COND_BRANCH", SDT_PPCcondbr,
                           [SDNPHasChain, SDNPOptInFlag]>;

def PPClbrx       : SDNode<"PPCISD::LBRX", SDT_PPClbrx,
                           [SDNPHasChain, SDNPMayLoad]>;
def PPCstbrx      : SDNode<"PPCISD::STBRX", SDT_PPCstbrx,
                           [SDNPHasChain, SDNPMayStore]>;

// Instructions to support atomic operations
def PPClarx      : SDNode<"PPCISD::LARX", SDT_PPClarx,
                          [SDNPHasChain, SDNPMayLoad]>;
def PPCstcx      : SDNode<"PPCISD::STCX", SDT_PPCstcx,
                          [SDNPHasChain, SDNPMayStore]>;

// Instructions to support dynamic alloca.
def SDTDynOp  : SDTypeProfile<1, 2, []>;
def PPCdynalloc   : SDNode<"PPCISD::DYNALLOC", SDTDynOp, [SDNPHasChain]>;

//===----------------------------------------------------------------------===//
// PowerPC specific transformation functions and pattern fragments.
//

def SHL32 : SDNodeXForm<imm, [{
  // Transformation function: 31 - imm
  return getI32Imm(31 - N->getZExtValue());
}]>;

def SRL32 : SDNodeXForm<imm, [{
  // Transformation function: 32 - imm
  return N->getZExtValue() ? getI32Imm(32 - N->getZExtValue()) : getI32Imm(0);
}]>;

def LO16 : SDNodeXForm<imm, [{
  // Transformation function: get the low 16 bits.
  return getI32Imm((unsigned short)N->getZExtValue());
}]>;

def HI16 : SDNodeXForm<imm, [{
  // Transformation function: shift the immediate value down into the low bits.
  return getI32Imm((unsigned)N->getZExtValue() >> 16);
}]>;

def HA16 : SDNodeXForm<imm, [{
  // Transformation function: shift the immediate value down into the low bits.
  signed int Val = N->getZExtValue();
  return getI32Imm((Val - (signed short)Val) >> 16);
}]>;
def MB : SDNodeXForm<imm, [{
  // Transformation function: get the start bit of a mask
  unsigned mb = 0, me;
  (void)isRunOfOnes((unsigned)N->getZExtValue(), mb, me);
  return getI32Imm(mb);
}]>;

def ME : SDNodeXForm<imm, [{
  // Transformation function: get the end bit of a mask
  unsigned mb, me = 0;
  (void)isRunOfOnes((unsigned)N->getZExtValue(), mb, me);
  return getI32Imm(me);
}]>;
def maskimm32 : PatLeaf<(imm), [{
  // maskImm predicate - True if immediate is a run of ones.
  unsigned mb, me;
  if (N->getValueType(0) == MVT::i32)
    return isRunOfOnes((unsigned)N->getZExtValue(), mb, me);
  else
    return false;
}]>;

def immSExt16  : PatLeaf<(imm), [{
  // immSExt16 predicate - True if the immediate fits in a 16-bit sign extended
  // field.  Used by instructions like 'addi'.
  if (N->getValueType(0) == MVT::i32)
    return (int32_t)N->getZExtValue() == (short)N->getZExtValue();
  else
    return (int64_t)N->getZExtValue() == (short)N->getZExtValue();
}]>;
def immZExt16  : PatLeaf<(imm), [{
  // immZExt16 predicate - True if the immediate fits in a 16-bit zero extended
  // field.  Used by instructions like 'ori'.
  return (uint64_t)N->getZExtValue() == (unsigned short)N->getZExtValue();
}], LO16>;

// imm16Shifted* - These match immediates where the low 16-bits are zero.  There
// are two forms: imm16ShiftedSExt and imm16ShiftedZExt.  These two forms are
// identical in 32-bit mode, but in 64-bit mode, they return true if the
// immediate fits into a sign/zero extended 32-bit immediate (with the low bits
// clear).
def imm16ShiftedZExt : PatLeaf<(imm), [{
  // imm16ShiftedZExt predicate - True if only bits in the top 16-bits of the
  // immediate are set.  Used by instructions like 'xoris'.
  return (N->getZExtValue() & ~uint64_t(0xFFFF0000)) == 0;
}], HI16>;

def imm16ShiftedSExt : PatLeaf<(imm), [{
  // imm16ShiftedSExt predicate - True if only bits in the top 16-bits of the
  // immediate are set.  Used by instructions like 'addis'.  Identical to 
  // imm16ShiftedZExt in 32-bit mode.
  if (N->getZExtValue() & 0xFFFF) return false;
  if (N->getValueType(0) == MVT::i32)
    return true;
  // For 64-bit, make sure it is sext right.
  return N->getZExtValue() == (uint64_t)(int)N->getZExtValue();
}], HI16>;


//===----------------------------------------------------------------------===//
// PowerPC Flag Definitions.

class isPPC64 { bit PPC64 = 1; }
class isDOT   {
  list<Register> Defs = [CR0];
  bit RC  = 1;
}

class RegConstraint<string C> {
  string Constraints = C;
}
class NoEncode<string E> {
  string DisableEncoding = E;
}


//===----------------------------------------------------------------------===//
// PowerPC Operand Definitions.

def s5imm   : Operand<i32> {
  let PrintMethod = "printS5ImmOperand";
}
def u5imm   : Operand<i32> {
  let PrintMethod = "printU5ImmOperand";
}
def u6imm   : Operand<i32> {
  let PrintMethod = "printU6ImmOperand";
}
def s16imm  : Operand<i32> {
  let PrintMethod = "printS16ImmOperand";
}
def u16imm  : Operand<i32> {
  let PrintMethod = "printU16ImmOperand";
}
def s16immX4  : Operand<i32> {   // Multiply imm by 4 before printing.
  let PrintMethod = "printS16X4ImmOperand";
}
def directbrtarget : Operand<OtherVT> {
  let PrintMethod = "printBranchOperand";
  let EncoderMethod = "getDirectBrEncoding";
}
def condbrtarget : Operand<OtherVT> {
  let EncoderMethod = "getCondBrEncoding";
}
def calltarget : Operand<iPTR> {
  let EncoderMethod = "getDirectBrEncoding";
}
def aaddr : Operand<iPTR> {
  let PrintMethod = "printAbsAddrOperand";
}
def piclabel: Operand<iPTR> {}
def symbolHi: Operand<i32> {
  let PrintMethod = "printSymbolHi";
  let EncoderMethod = "getHA16Encoding";
}
def symbolLo: Operand<i32> {
  let PrintMethod = "printSymbolLo";
  let EncoderMethod = "getLO16Encoding";
}
def crbitm: Operand<i8> {
  let PrintMethod = "printcrbitm";
  let EncoderMethod = "get_crbitm_encoding";
}
// Address operands
def memri : Operand<iPTR> {
  let PrintMethod = "printMemRegImm";
  let MIOperandInfo = (ops i32imm:$imm, ptr_rc:$reg);
}
def memrr : Operand<iPTR> {
  let PrintMethod = "printMemRegReg";
  let MIOperandInfo = (ops ptr_rc, ptr_rc);
}
def memrix : Operand<iPTR> {   // memri where the imm is shifted 2 bits.
  let PrintMethod = "printMemRegImmShifted";
  let MIOperandInfo = (ops i32imm:$imm, ptr_rc:$reg);
}
def tocentry : Operand<iPTR> {
  let MIOperandInfo = (ops i32imm:$imm);
}

// PowerPC Predicate operand.  20 = (0<<5)|20 = always, CR0 is a dummy reg
// that doesn't matter.
def pred : PredicateOperand<OtherVT, (ops imm, CRRC),
                                     (ops (i32 20), (i32 zero_reg))> {
  let PrintMethod = "printPredicateOperand";
}

// Define PowerPC specific addressing mode.
def iaddr  : ComplexPattern<iPTR, 2, "SelectAddrImm",    [], []>;
def xaddr  : ComplexPattern<iPTR, 2, "SelectAddrIdx",    [], []>;
def xoaddr : ComplexPattern<iPTR, 2, "SelectAddrIdxOnly",[], []>;
def ixaddr : ComplexPattern<iPTR, 2, "SelectAddrImmShift", [], []>; // "std"

/// This is just the offset part of iaddr, used for preinc.
def iaddroff : ComplexPattern<iPTR, 1, "SelectAddrImmOffs", [], []>;

//===----------------------------------------------------------------------===//
// PowerPC Instruction Predicate Definitions.
def FPContractions : Predicate<"!NoExcessFPPrecision">;
def In32BitMode  : Predicate<"!PPCSubTarget.isPPC64()">;
def In64BitMode  : Predicate<"PPCSubTarget.isPPC64()">;


//===----------------------------------------------------------------------===//
// PowerPC Instruction Definitions.

// Pseudo-instructions:

let hasCtrlDep = 1 in {
let Defs = [R1], Uses = [R1] in {
def ADJCALLSTACKDOWN : Pseudo<(outs), (ins u16imm:$amt), "",
                              [(callseq_start timm:$amt)]>;
def ADJCALLSTACKUP   : Pseudo<(outs), (ins u16imm:$amt1, u16imm:$amt2), "",
                              [(callseq_end timm:$amt1, timm:$amt2)]>;
}

def UPDATE_VRSAVE    : Pseudo<(outs GPRC:$rD), (ins GPRC:$rS),
                              "UPDATE_VRSAVE $rD, $rS", []>;
}

let Defs = [R1], Uses = [R1] in
def DYNALLOC : Pseudo<(outs GPRC:$result), (ins GPRC:$negsize, memri:$fpsi), "",
                       [(set GPRC:$result,
                             (PPCdynalloc GPRC:$negsize, iaddr:$fpsi))]>;
                         
// SELECT_CC_* - Used to implement the SELECT_CC DAG operation.  Expanded after
// instruction selection into a branch sequence.
let usesCustomInserter = 1,    // Expanded after instruction selection.
    PPC970_Single = 1 in {
  def SELECT_CC_I4 : Pseudo<(outs GPRC:$dst), (ins CRRC:$cond, GPRC:$T, GPRC:$F,
                              i32imm:$BROPC), "",
                              []>;
  def SELECT_CC_I8 : Pseudo<(outs G8RC:$dst), (ins CRRC:$cond, G8RC:$T, G8RC:$F,
                              i32imm:$BROPC), "",
                              []>;
  def SELECT_CC_F4  : Pseudo<(outs F4RC:$dst), (ins CRRC:$cond, F4RC:$T, F4RC:$F,
                              i32imm:$BROPC), "",
                              []>;
  def SELECT_CC_F8  : Pseudo<(outs F8RC:$dst), (ins CRRC:$cond, F8RC:$T, F8RC:$F,
                              i32imm:$BROPC), "",
                              []>;
  def SELECT_CC_VRRC: Pseudo<(outs VRRC:$dst), (ins CRRC:$cond, VRRC:$T, VRRC:$F,
                              i32imm:$BROPC), "",
                              []>;
}

// SPILL_CR - Indicate that we're dumping the CR register, so we'll need to
// scavenge a register for it.
def SPILL_CR : Pseudo<(outs), (ins GPRC:$cond, memri:$F),
                     "", []>;

let isTerminator = 1, isBarrier = 1, PPC970_Unit = 7 in {
  let isReturn = 1, Uses = [LR, RM] in
    def BLR : XLForm_2_br<19, 16, 0, (outs), (ins pred:$p),
                          "b${p:cc}lr ${p:reg}", BrB, 
                          [(retflag)]>;
  let isBranch = 1, isIndirectBranch = 1, Uses = [CTR] in
    def BCTR : XLForm_2_ext<19, 528, 20, 0, 0, (outs), (ins), "bctr", BrB, []>;
}

let Defs = [LR] in
  def MovePCtoLR : Pseudo<(outs), (ins piclabel:$label), "", []>,
                   PPC970_Unit_BRU;

let isBranch = 1, isTerminator = 1, hasCtrlDep = 1, PPC970_Unit = 7 in {
  let isBarrier = 1 in {
  def B   : IForm<18, 0, 0, (outs), (ins directbrtarget:$dst),
                  "b $dst", BrB,
                  [(br bb:$dst)]>;
  }

  // BCC represents an arbitrary conditional branch on a predicate.
  // FIXME: should be able to write a pattern for PPCcondbranch, but can't use
  // a two-value operand where a dag node expects two operands. :( 
  def BCC : BForm<16, 0, 0, (outs), (ins pred:$cond, condbrtarget:$dst),
                  "b${cond:cc} ${cond:reg}, $dst"
                  /*[(PPCcondbranch CRRC:$crS, imm:$opc, bb:$dst)]*/>;
}

// Darwin ABI Calls.
let isCall = 1, PPC970_Unit = 7, 
  // All calls clobber the non-callee saved registers...
  Defs = [R0,R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,
          F0,F1,F2,F3,F4,F5,F6,F7,F8,F9,F10,F11,F12,F13,
          V0,V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V18,V19,
          LR,CTR,
          CR0,CR1,CR5,CR6,CR7,CARRY] in {
  // Convenient aliases for call instructions
  let Uses = [RM] in {
    def BL_Darwin  : IForm<18, 0, 1,
                           (outs), (ins calltarget:$func, variable_ops), 
                           "bl $func", BrB, []>;  // See Pat patterns below.
    def BLA_Darwin : IForm<18, 1, 1, 
                          (outs), (ins aaddr:$func, variable_ops),
                          "bla $func", BrB, [(PPCcall_Darwin (i32 imm:$func))]>;
  }
  let Uses = [CTR, RM] in {
    def BCTRL_Darwin : XLForm_2_ext<19, 528, 20, 0, 1, 
                                  (outs), (ins variable_ops),
                                  "bctrl", BrB,
                                  [(PPCbctrl_Darwin)]>, Requires<[In32BitMode]>;
  }
}

// SVR4 ABI Calls.
let isCall = 1, PPC970_Unit = 7, 
  // All calls clobber the non-callee saved registers...
  Defs = [R0,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12,
          F0,F1,F2,F3,F4,F5,F6,F7,F8,F9,F10,F11,F12,F13,
          V0,V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15,V16,V17,V18,V19,
          LR,CTR,
          CR0,CR1,CR5,CR6,CR7,CARRY] in {
  // Convenient aliases for call instructions
  let Uses = [RM] in {
    def BL_SVR4  : IForm<18, 0, 1,
                        (outs), (ins calltarget:$func, variable_ops), 
                        "bl $func", BrB, []>;  // See Pat patterns below.
    def BLA_SVR4 : IForm<18, 1, 1,
                        (outs), (ins aaddr:$func, variable_ops),
                        "bla $func", BrB,
                        [(PPCcall_SVR4 (i32 imm:$func))]>;
  }
  let Uses = [CTR, RM] in {
    def BCTRL_SVR4 : XLForm_2_ext<19, 528, 20, 0, 1,
                                (outs), (ins variable_ops),
                                "bctrl", BrB,
                                [(PPCbctrl_SVR4)]>, Requires<[In32BitMode]>;
  }
}


let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, Uses = [RM] in
def TCRETURNdi :Pseudo< (outs),
                        (ins calltarget:$dst, i32imm:$offset, variable_ops),
                 "#TC_RETURNd $dst $offset",
                 []>;


let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, Uses = [RM] in
def TCRETURNai :Pseudo<(outs), (ins aaddr:$func, i32imm:$offset, variable_ops),
                 "#TC_RETURNa $func $offset",
                 [(PPCtc_return (i32 imm:$func), imm:$offset)]>;

let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, Uses = [RM] in
def TCRETURNri : Pseudo<(outs), (ins CTRRC:$dst, i32imm:$offset, variable_ops),
                 "#TC_RETURNr $dst $offset",
                 []>;


let isTerminator = 1, isBarrier = 1, PPC970_Unit = 7, isBranch = 1,
    isIndirectBranch = 1, isCall = 1, isReturn = 1, Uses = [CTR, RM]  in
def TAILBCTR : XLForm_2_ext<19, 528, 20, 0, 0, (outs), (ins), "bctr", BrB, []>,
     Requires<[In32BitMode]>;



let isBranch = 1, isTerminator = 1, hasCtrlDep = 1, PPC970_Unit = 7,
    isBarrier = 1, isCall = 1, isReturn = 1, Uses = [RM] in
def TAILB   : IForm<18, 0, 0, (outs), (ins calltarget:$dst),
                  "b $dst", BrB,
                  []>;


let isBranch = 1, isTerminator = 1, hasCtrlDep = 1, PPC970_Unit = 7,
    isBarrier = 1, isCall = 1, isReturn = 1, Uses = [RM] in
def TAILBA   : IForm<18, 0, 0, (outs), (ins aaddr:$dst),
                  "ba $dst", BrB,
                  []>;


// DCB* instructions.
def DCBA   : DCB_Form<758, 0, (outs), (ins memrr:$dst),
                      "dcba $dst", LdStDCBF, [(int_ppc_dcba xoaddr:$dst)]>,
                      PPC970_DGroup_Single;
def DCBF   : DCB_Form<86, 0, (outs), (ins memrr:$dst),
                      "dcbf $dst", LdStDCBF, [(int_ppc_dcbf xoaddr:$dst)]>,
                      PPC970_DGroup_Single;
def DCBI   : DCB_Form<470, 0, (outs), (ins memrr:$dst),
                      "dcbi $dst", LdStDCBF, [(int_ppc_dcbi xoaddr:$dst)]>,
                      PPC970_DGroup_Single;
def DCBST  : DCB_Form<54, 0, (outs), (ins memrr:$dst),
                      "dcbst $dst", LdStDCBF, [(int_ppc_dcbst xoaddr:$dst)]>,
                      PPC970_DGroup_Single;
def DCBT   : DCB_Form<278, 0, (outs), (ins memrr:$dst),
                      "dcbt $dst", LdStDCBF, [(int_ppc_dcbt xoaddr:$dst)]>,
                      PPC970_DGroup_Single;
def DCBTST : DCB_Form<246, 0, (outs), (ins memrr:$dst),
                      "dcbtst $dst", LdStDCBF, [(int_ppc_dcbtst xoaddr:$dst)]>,
                      PPC970_DGroup_Single;
def DCBZ   : DCB_Form<1014, 0, (outs), (ins memrr:$dst),
                      "dcbz $dst", LdStDCBF, [(int_ppc_dcbz xoaddr:$dst)]>,
                      PPC970_DGroup_Single;
def DCBZL  : DCB_Form<1014, 1, (outs), (ins memrr:$dst),
                      "dcbzl $dst", LdStDCBF, [(int_ppc_dcbzl xoaddr:$dst)]>,
                      PPC970_DGroup_Single;

// Atomic operations
let usesCustomInserter = 1 in {
  let Uses = [CR0] in {
    def ATOMIC_LOAD_ADD_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_add_8 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_SUB_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_sub_8 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_AND_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_and_8 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_OR_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_or_8 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_XOR_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_xor_8 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_NAND_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_nand_8 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_ADD_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_add_16 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_SUB_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_sub_16 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_AND_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_and_16 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_OR_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_or_16 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_XOR_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_xor_16 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_NAND_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_nand_16 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_ADD_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_add_32 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_SUB_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_sub_32 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_AND_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_and_32 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_OR_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_or_32 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_XOR_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_xor_32 xoaddr:$ptr, GPRC:$incr))]>;
    def ATOMIC_LOAD_NAND_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$incr), "",
      [(set GPRC:$dst, (atomic_load_nand_32 xoaddr:$ptr, GPRC:$incr))]>;

    def ATOMIC_CMP_SWAP_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$old, GPRC:$new), "",
      [(set GPRC:$dst, 
                    (atomic_cmp_swap_8 xoaddr:$ptr, GPRC:$old, GPRC:$new))]>;
    def ATOMIC_CMP_SWAP_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$old, GPRC:$new), "",
      [(set GPRC:$dst, 
                    (atomic_cmp_swap_16 xoaddr:$ptr, GPRC:$old, GPRC:$new))]>;
    def ATOMIC_CMP_SWAP_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$old, GPRC:$new), "",
      [(set GPRC:$dst, 
                    (atomic_cmp_swap_32 xoaddr:$ptr, GPRC:$old, GPRC:$new))]>;

    def ATOMIC_SWAP_I8 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$new), "",
      [(set GPRC:$dst, (atomic_swap_8 xoaddr:$ptr, GPRC:$new))]>;
    def ATOMIC_SWAP_I16 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$new), "",
      [(set GPRC:$dst, (atomic_swap_16 xoaddr:$ptr, GPRC:$new))]>;
    def ATOMIC_SWAP_I32 : Pseudo<
      (outs GPRC:$dst), (ins memrr:$ptr, GPRC:$new), "",
      [(set GPRC:$dst, (atomic_swap_32 xoaddr:$ptr, GPRC:$new))]>;
  }
}

// Instructions to support atomic operations
def LWARX : XForm_1<31,  20, (outs GPRC:$rD), (ins memrr:$src),
                   "lwarx $rD, $src", LdStLWARX,
                   [(set GPRC:$rD, (PPClarx xoaddr:$src))]>;

let Defs = [CR0] in
def STWCX : XForm_1<31, 150, (outs), (ins GPRC:$rS, memrr:$dst),
                   "stwcx. $rS, $dst", LdStSTWCX,
                   [(PPCstcx GPRC:$rS, xoaddr:$dst)]>,
                   isDOT;

let isTerminator = 1, isBarrier = 1, hasCtrlDep = 1 in
def TRAP  : XForm_24<31, 4, (outs), (ins), "trap", LdStGeneral, [(trap)]>;

//===----------------------------------------------------------------------===//
// PPC32 Load Instructions.
//

// Unindexed (r+i) Loads. 
let canFoldAsLoad = 1, PPC970_Unit = 2 in {
def LBZ : DForm_1<34, (outs GPRC:$rD), (ins memri:$src),
                  "lbz $rD, $src", LdStGeneral,
                  [(set GPRC:$rD, (zextloadi8 iaddr:$src))]>;
def LHA : DForm_1<42, (outs GPRC:$rD), (ins memri:$src),
                  "lha $rD, $src", LdStLHA,
                  [(set GPRC:$rD, (sextloadi16 iaddr:$src))]>,
                  PPC970_DGroup_Cracked;
def LHZ : DForm_1<40, (outs GPRC:$rD), (ins memri:$src),
                  "lhz $rD, $src", LdStGeneral,
                  [(set GPRC:$rD, (zextloadi16 iaddr:$src))]>;
def LWZ : DForm_1<32, (outs GPRC:$rD), (ins memri:$src),
                  "lwz $rD, $src", LdStGeneral,
                  [(set GPRC:$rD, (load iaddr:$src))]>;

def LFS : DForm_1<48, (outs F4RC:$rD), (ins memri:$src),
                  "lfs $rD, $src", LdStLFDU,
                  [(set F4RC:$rD, (load iaddr:$src))]>;
def LFD : DForm_1<50, (outs F8RC:$rD), (ins memri:$src),
                  "lfd $rD, $src", LdStLFD,
                  [(set F8RC:$rD, (load iaddr:$src))]>;


// Unindexed (r+i) Loads with Update (preinc).
let mayLoad = 1 in {
def LBZU : DForm_1<35, (outs GPRC:$rD, ptr_rc:$ea_result), (ins memri:$addr),
                   "lbzu $rD, $addr", LdStGeneral,
                   []>, RegConstraint<"$addr.reg = $ea_result">,
                   NoEncode<"$ea_result">;

def LHAU : DForm_1<43, (outs GPRC:$rD, ptr_rc:$ea_result), (ins memri:$addr),
                   "lhau $rD, $addr", LdStGeneral,
                   []>, RegConstraint<"$addr.reg = $ea_result">,
                   NoEncode<"$ea_result">;

def LHZU : DForm_1<41, (outs GPRC:$rD, ptr_rc:$ea_result), (ins memri:$addr),
                   "lhzu $rD, $addr", LdStGeneral,
                   []>, RegConstraint<"$addr.reg = $ea_result">,
                   NoEncode<"$ea_result">;

def LWZU : DForm_1<33, (outs GPRC:$rD, ptr_rc:$ea_result), (ins memri:$addr),
                   "lwzu $rD, $addr", LdStGeneral,
                   []>, RegConstraint<"$addr.reg = $ea_result">,
                   NoEncode<"$ea_result">;

def LFSU : DForm_1<49, (outs F4RC:$rD, ptr_rc:$ea_result), (ins memri:$addr),
                  "lfs $rD, $addr", LdStLFDU,
                  []>, RegConstraint<"$addr.reg = $ea_result">,
                   NoEncode<"$ea_result">;

def LFDU : DForm_1<51, (outs F8RC:$rD, ptr_rc:$ea_result), (ins memri:$addr),
                  "lfd $rD, $addr", LdStLFD,
                  []>, RegConstraint<"$addr.reg = $ea_result">,
                   NoEncode<"$ea_result">;
}
}

// Indexed (r+r) Loads.
//
let canFoldAsLoad = 1, PPC970_Unit = 2 in {
def LBZX : XForm_1<31,  87, (outs GPRC:$rD), (ins memrr:$src),
                   "lbzx $rD, $src", LdStGeneral,
                   [(set GPRC:$rD, (zextloadi8 xaddr:$src))]>;
def LHAX : XForm_1<31, 343, (outs GPRC:$rD), (ins memrr:$src),
                   "lhax $rD, $src", LdStLHA,
                   [(set GPRC:$rD, (sextloadi16 xaddr:$src))]>,
                   PPC970_DGroup_Cracked;
def LHZX : XForm_1<31, 279, (outs GPRC:$rD), (ins memrr:$src),
                   "lhzx $rD, $src", LdStGeneral,
                   [(set GPRC:$rD, (zextloadi16 xaddr:$src))]>;
def LWZX : XForm_1<31,  23, (outs GPRC:$rD), (ins memrr:$src),
                   "lwzx $rD, $src", LdStGeneral,
                   [(set GPRC:$rD, (load xaddr:$src))]>;
                   
                   
def LHBRX : XForm_1<31, 790, (outs GPRC:$rD), (ins memrr:$src),
                   "lhbrx $rD, $src", LdStGeneral,
                   [(set GPRC:$rD, (PPClbrx xoaddr:$src, i16))]>;
def LWBRX : XForm_1<31,  534, (outs GPRC:$rD), (ins memrr:$src),
                   "lwbrx $rD, $src", LdStGeneral,
                   [(set GPRC:$rD, (PPClbrx xoaddr:$src, i32))]>;

def LFSX   : XForm_25<31, 535, (outs F4RC:$frD), (ins memrr:$src),
                      "lfsx $frD, $src", LdStLFDU,
                      [(set F4RC:$frD, (load xaddr:$src))]>;
def LFDX   : XForm_25<31, 599, (outs F8RC:$frD), (ins memrr:$src),
                      "lfdx $frD, $src", LdStLFDU,
                      [(set F8RC:$frD, (load xaddr:$src))]>;
}

//===----------------------------------------------------------------------===//
// PPC32 Store Instructions.
//

// Unindexed (r+i) Stores.
let PPC970_Unit = 2 in {
def STB  : DForm_1<38, (outs), (ins GPRC:$rS, memri:$src),
                   "stb $rS, $src", LdStGeneral,
                   [(truncstorei8 GPRC:$rS, iaddr:$src)]>;
def STH  : DForm_1<44, (outs), (ins GPRC:$rS, memri:$src),
                   "sth $rS, $src", LdStGeneral,
                   [(truncstorei16 GPRC:$rS, iaddr:$src)]>;
def STW  : DForm_1<36, (outs), (ins GPRC:$rS, memri:$src),
                   "stw $rS, $src", LdStGeneral,
                   [(store GPRC:$rS, iaddr:$src)]>;
def STFS : DForm_1<52, (outs), (ins F4RC:$rS, memri:$dst),
                   "stfs $rS, $dst", LdStUX,
                   [(store F4RC:$rS, iaddr:$dst)]>;
def STFD : DForm_1<54, (outs), (ins F8RC:$rS, memri:$dst),
                   "stfd $rS, $dst", LdStUX,
                   [(store F8RC:$rS, iaddr:$dst)]>;
}

// Unindexed (r+i) Stores with Update (preinc).
let PPC970_Unit = 2 in {
def STBU  : DForm_1<39, (outs ptr_rc:$ea_res), (ins GPRC:$rS,
                             symbolLo:$ptroff, ptr_rc:$ptrreg),
                    "stbu $rS, $ptroff($ptrreg)", LdStGeneral,
                    [(set ptr_rc:$ea_res,
                          (pre_truncsti8 GPRC:$rS, ptr_rc:$ptrreg, 
                                         iaddroff:$ptroff))]>,
                    RegConstraint<"$ptrreg = $ea_res">, NoEncode<"$ea_res">;
def STHU  : DForm_1<45, (outs ptr_rc:$ea_res), (ins GPRC:$rS,
                             symbolLo:$ptroff, ptr_rc:$ptrreg),
                    "sthu $rS, $ptroff($ptrreg)", LdStGeneral,
                    [(set ptr_rc:$ea_res,
                        (pre_truncsti16 GPRC:$rS, ptr_rc:$ptrreg, 
                                        iaddroff:$ptroff))]>,
                    RegConstraint<"$ptrreg = $ea_res">, NoEncode<"$ea_res">;
def STWU  : DForm_1<37, (outs ptr_rc:$ea_res), (ins GPRC:$rS,
                             symbolLo:$ptroff, ptr_rc:$ptrreg),
                    "stwu $rS, $ptroff($ptrreg)", LdStGeneral,
                    [(set ptr_rc:$ea_res, (pre_store GPRC:$rS, ptr_rc:$ptrreg, 
                                                     iaddroff:$ptroff))]>,
                    RegConstraint<"$ptrreg = $ea_res">, NoEncode<"$ea_res">;
def STFSU : DForm_1<37, (outs ptr_rc:$ea_res), (ins F4RC:$rS,
                             symbolLo:$ptroff, ptr_rc:$ptrreg),
                    "stfsu $rS, $ptroff($ptrreg)", LdStGeneral,
                    [(set ptr_rc:$ea_res, (pre_store F4RC:$rS,  ptr_rc:$ptrreg, 
                                          iaddroff:$ptroff))]>,
                    RegConstraint<"$ptrreg = $ea_res">, NoEncode<"$ea_res">;
def STFDU : DForm_1<37, (outs ptr_rc:$ea_res), (ins F8RC:$rS,
                             symbolLo:$ptroff, ptr_rc:$ptrreg),
                    "stfdu $rS, $ptroff($ptrreg)", LdStGeneral,
                    [(set ptr_rc:$ea_res, (pre_store F8RC:$rS, ptr_rc:$ptrreg, 
                                          iaddroff:$ptroff))]>,
                    RegConstraint<"$ptrreg = $ea_res">, NoEncode<"$ea_res">;
}


// Indexed (r+r) Stores.
//
let PPC970_Unit = 2 in {
def STBX  : XForm_8<31, 215, (outs), (ins GPRC:$rS, memrr:$dst),
                   "stbx $rS, $dst", LdStGeneral,
                   [(truncstorei8 GPRC:$rS, xaddr:$dst)]>, 
                   PPC970_DGroup_Cracked;
def STHX  : XForm_8<31, 407, (outs), (ins GPRC:$rS, memrr:$dst),
                   "sthx $rS, $dst", LdStGeneral,
                   [(truncstorei16 GPRC:$rS, xaddr:$dst)]>, 
                   PPC970_DGroup_Cracked;
def STWX  : XForm_8<31, 151, (outs), (ins GPRC:$rS, memrr:$dst),
                   "stwx $rS, $dst", LdStGeneral,
                   [(store GPRC:$rS, xaddr:$dst)]>,
                   PPC970_DGroup_Cracked;
                   
let mayStore = 1 in {
def STWUX : XForm_8<31, 183, (outs), (ins GPRC:$rS, GPRC:$rA, GPRC:$rB),
                   "stwux $rS, $rA, $rB", LdStGeneral,
                   []>;
}
def STHBRX: XForm_8<31, 918, (outs), (ins GPRC:$rS, memrr:$dst),
                   "sthbrx $rS, $dst", LdStGeneral,
                   [(PPCstbrx GPRC:$rS, xoaddr:$dst, i16)]>, 
                   PPC970_DGroup_Cracked;
def STWBRX: XForm_8<31, 662, (outs), (ins GPRC:$rS, memrr:$dst),
                   "stwbrx $rS, $dst", LdStGeneral,
                   [(PPCstbrx GPRC:$rS, xoaddr:$dst, i32)]>,
                   PPC970_DGroup_Cracked;

def STFIWX: XForm_28<31, 983, (outs), (ins F8RC:$frS, memrr:$dst),
                     "stfiwx $frS, $dst", LdStUX,
                     [(PPCstfiwx F8RC:$frS, xoaddr:$dst)]>;
                     
def STFSX : XForm_28<31, 663, (outs), (ins F4RC:$frS, memrr:$dst),
                     "stfsx $frS, $dst", LdStUX,
                     [(store F4RC:$frS, xaddr:$dst)]>;
def STFDX : XForm_28<31, 727, (outs), (ins F8RC:$frS, memrr:$dst),
                     "stfdx $frS, $dst", LdStUX,
                     [(store F8RC:$frS, xaddr:$dst)]>;
}

def SYNC : XForm_24_sync<31, 598, (outs), (ins),
                        "sync", LdStSync,
                        [(int_ppc_sync)]>;

//===----------------------------------------------------------------------===//
// PPC32 Arithmetic Instructions.
//

let PPC970_Unit = 1 in {  // FXU Operations.
def ADDI   : DForm_2<14, (outs GPRC:$rD), (ins GPRC:$rA, s16imm:$imm),
                     "addi $rD, $rA, $imm", IntGeneral,
                     [(set GPRC:$rD, (add GPRC:$rA, immSExt16:$imm))]>;
let Defs = [CARRY] in {
def ADDIC  : DForm_2<12, (outs GPRC:$rD), (ins GPRC:$rA, s16imm:$imm),
                     "addic $rD, $rA, $imm", IntGeneral,
                     [(set GPRC:$rD, (addc GPRC:$rA, immSExt16:$imm))]>,
                     PPC970_DGroup_Cracked;
def ADDICo : DForm_2<13, (outs GPRC:$rD), (ins GPRC:$rA, s16imm:$imm),
                     "addic. $rD, $rA, $imm", IntGeneral,
                     []>;
}
def ADDIS  : DForm_2<15, (outs GPRC:$rD), (ins GPRC:$rA, symbolHi:$imm),
                     "addis $rD, $rA, $imm", IntGeneral,
                     [(set GPRC:$rD, (add GPRC:$rA, imm16ShiftedSExt:$imm))]>;
def LA     : DForm_2<14, (outs GPRC:$rD), (ins GPRC:$rA, symbolLo:$sym),
                     "la $rD, $sym($rA)", IntGeneral,
                     [(set GPRC:$rD, (add GPRC:$rA,
                                          (PPClo tglobaladdr:$sym, 0)))]>;
def MULLI  : DForm_2< 7, (outs GPRC:$rD), (ins GPRC:$rA, s16imm:$imm),
                     "mulli $rD, $rA, $imm", IntMulLI,
                     [(set GPRC:$rD, (mul GPRC:$rA, immSExt16:$imm))]>;
let Defs = [CARRY] in {
def SUBFIC : DForm_2< 8, (outs GPRC:$rD), (ins GPRC:$rA, s16imm:$imm),
                     "subfic $rD, $rA, $imm", IntGeneral,
                     [(set GPRC:$rD, (subc immSExt16:$imm, GPRC:$rA))]>;
}

let isReMaterializable = 1 in {
  def LI  : DForm_2_r0<14, (outs GPRC:$rD), (ins symbolLo:$imm),
                       "li $rD, $imm", IntGeneral,
                       [(set GPRC:$rD, immSExt16:$imm)]>;
  def LIS : DForm_2_r0<15, (outs GPRC:$rD), (ins symbolHi:$imm),
                       "lis $rD, $imm", IntGeneral,
                       [(set GPRC:$rD, imm16ShiftedSExt:$imm)]>;
}
}

let PPC970_Unit = 1 in {  // FXU Operations.
def ANDIo : DForm_4<28, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
                    "andi. $dst, $src1, $src2", IntGeneral,
                    [(set GPRC:$dst, (and GPRC:$src1, immZExt16:$src2))]>,
                    isDOT;
def ANDISo : DForm_4<29, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
                    "andis. $dst, $src1, $src2", IntGeneral,
                    [(set GPRC:$dst, (and GPRC:$src1,imm16ShiftedZExt:$src2))]>,
                    isDOT;
def ORI   : DForm_4<24, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
                    "ori $dst, $src1, $src2", IntGeneral,
                    [(set GPRC:$dst, (or GPRC:$src1, immZExt16:$src2))]>;
def ORIS  : DForm_4<25, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
                    "oris $dst, $src1, $src2", IntGeneral,
                    [(set GPRC:$dst, (or GPRC:$src1, imm16ShiftedZExt:$src2))]>;
def XORI  : DForm_4<26, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
                    "xori $dst, $src1, $src2", IntGeneral,
                    [(set GPRC:$dst, (xor GPRC:$src1, immZExt16:$src2))]>;
def XORIS : DForm_4<27, (outs GPRC:$dst), (ins GPRC:$src1, u16imm:$src2),
                    "xoris $dst, $src1, $src2", IntGeneral,
                    [(set GPRC:$dst, (xor GPRC:$src1,imm16ShiftedZExt:$src2))]>;
def NOP   : DForm_4_zero<24, (outs), (ins), "nop", IntGeneral,
                         []>;
def CMPWI : DForm_5_ext<11, (outs CRRC:$crD), (ins GPRC:$rA, s16imm:$imm),
                        "cmpwi $crD, $rA, $imm", IntCompare>;
def CMPLWI : DForm_6_ext<10, (outs CRRC:$dst), (ins GPRC:$src1, u16imm:$src2),
                         "cmplwi $dst, $src1, $src2", IntCompare>;
}


let PPC970_Unit = 1 in {  // FXU Operations.
def NAND : XForm_6<31, 476, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "nand $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (not (and GPRC:$rS, GPRC:$rB)))]>;
def AND  : XForm_6<31,  28, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "and $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (and GPRC:$rS, GPRC:$rB))]>;
def ANDC : XForm_6<31,  60, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "andc $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (and GPRC:$rS, (not GPRC:$rB)))]>;
def OR   : XForm_6<31, 444, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "or $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (or GPRC:$rS, GPRC:$rB))]>;
def NOR  : XForm_6<31, 124, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "nor $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (not (or GPRC:$rS, GPRC:$rB)))]>;
def ORC  : XForm_6<31, 412, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "orc $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (or GPRC:$rS, (not GPRC:$rB)))]>;
def EQV  : XForm_6<31, 284, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "eqv $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (not (xor GPRC:$rS, GPRC:$rB)))]>;
def XOR  : XForm_6<31, 316, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "xor $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (xor GPRC:$rS, GPRC:$rB))]>;
def SLW  : XForm_6<31,  24, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "slw $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (PPCshl GPRC:$rS, GPRC:$rB))]>;
def SRW  : XForm_6<31, 536, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "srw $rA, $rS, $rB", IntGeneral,
                   [(set GPRC:$rA, (PPCsrl GPRC:$rS, GPRC:$rB))]>;
let Defs = [CARRY] in {
def SRAW : XForm_6<31, 792, (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB),
                   "sraw $rA, $rS, $rB", IntShift,
                   [(set GPRC:$rA, (PPCsra GPRC:$rS, GPRC:$rB))]>;
}
}

let PPC970_Unit = 1 in {  // FXU Operations.
let Defs = [CARRY] in {
def SRAWI : XForm_10<31, 824, (outs GPRC:$rA), (ins GPRC:$rS, u5imm:$SH), 
                     "srawi $rA, $rS, $SH", IntShift,
                     [(set GPRC:$rA, (sra GPRC:$rS, (i32 imm:$SH)))]>;
}
def CNTLZW : XForm_11<31,  26, (outs GPRC:$rA), (ins GPRC:$rS),
                      "cntlzw $rA, $rS", IntGeneral,
                      [(set GPRC:$rA, (ctlz GPRC:$rS))]>;
def EXTSB  : XForm_11<31, 954, (outs GPRC:$rA), (ins GPRC:$rS),
                      "extsb $rA, $rS", IntGeneral,
                      [(set GPRC:$rA, (sext_inreg GPRC:$rS, i8))]>;
def EXTSH  : XForm_11<31, 922, (outs GPRC:$rA), (ins GPRC:$rS),
                      "extsh $rA, $rS", IntGeneral,
                      [(set GPRC:$rA, (sext_inreg GPRC:$rS, i16))]>;

def CMPW   : XForm_16_ext<31, 0, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
                          "cmpw $crD, $rA, $rB", IntCompare>;
def CMPLW  : XForm_16_ext<31, 32, (outs CRRC:$crD), (ins GPRC:$rA, GPRC:$rB),
                          "cmplw $crD, $rA, $rB", IntCompare>;
}
let PPC970_Unit = 3 in {  // FPU Operations.
//def FCMPO  : XForm_17<63, 32, (outs CRRC:$crD), (ins FPRC:$fA, FPRC:$fB),
//                      "fcmpo $crD, $fA, $fB", FPCompare>;
def FCMPUS : XForm_17<63, 0, (outs CRRC:$crD), (ins F4RC:$fA, F4RC:$fB),
                      "fcmpu $crD, $fA, $fB", FPCompare>;
def FCMPUD : XForm_17<63, 0, (outs CRRC:$crD), (ins F8RC:$fA, F8RC:$fB),
                      "fcmpu $crD, $fA, $fB", FPCompare>;

let Uses = [RM] in {
  def FCTIWZ : XForm_26<63, 15, (outs F8RC:$frD), (ins F8RC:$frB),
                        "fctiwz $frD, $frB", FPGeneral,
                        [(set F8RC:$frD, (PPCfctiwz F8RC:$frB))]>;
  def FRSP   : XForm_26<63, 12, (outs F4RC:$frD), (ins F8RC:$frB),
                        "frsp $frD, $frB", FPGeneral,
                        [(set F4RC:$frD, (fround F8RC:$frB))]>;
  def FSQRT  : XForm_26<63, 22, (outs F8RC:$frD), (ins F8RC:$frB),
                        "fsqrt $frD, $frB", FPSqrt,
                        [(set F8RC:$frD, (fsqrt F8RC:$frB))]>;
  def FSQRTS : XForm_26<59, 22, (outs F4RC:$frD), (ins F4RC:$frB),
                        "fsqrts $frD, $frB", FPSqrt,
                        [(set F4RC:$frD, (fsqrt F4RC:$frB))]>;
  }
}

/// Note that FMR is defined as pseudo-ops on the PPC970 because they are
/// often coalesced away and we don't want the dispatch group builder to think
/// that they will fill slots (which could cause the load of a LSU reject to
/// sneak into a d-group with a store).
def FMR   : XForm_26<63, 72, (outs F4RC:$frD), (ins F4RC:$frB),
                     "fmr $frD, $frB", FPGeneral,
                     []>,  // (set F4RC:$frD, F4RC:$frB)
                     PPC970_Unit_Pseudo;

let PPC970_Unit = 3 in {  // FPU Operations.
// These are artificially split into two different forms, for 4/8 byte FP.
def FABSS  : XForm_26<63, 264, (outs F4RC:$frD), (ins F4RC:$frB),
                      "fabs $frD, $frB", FPGeneral,
                      [(set F4RC:$frD, (fabs F4RC:$frB))]>;
def FABSD  : XForm_26<63, 264, (outs F8RC:$frD), (ins F8RC:$frB),
                      "fabs $frD, $frB", FPGeneral,
                      [(set F8RC:$frD, (fabs F8RC:$frB))]>;
def FNABSS : XForm_26<63, 136, (outs F4RC:$frD), (ins F4RC:$frB),
                      "fnabs $frD, $frB", FPGeneral,
                      [(set F4RC:$frD, (fneg (fabs F4RC:$frB)))]>;
def FNABSD : XForm_26<63, 136, (outs F8RC:$frD), (ins F8RC:$frB),
                      "fnabs $frD, $frB", FPGeneral,
                      [(set F8RC:$frD, (fneg (fabs F8RC:$frB)))]>;
def FNEGS  : XForm_26<63, 40, (outs F4RC:$frD), (ins F4RC:$frB),
                      "fneg $frD, $frB", FPGeneral,
                      [(set F4RC:$frD, (fneg F4RC:$frB))]>;
def FNEGD  : XForm_26<63, 40, (outs F8RC:$frD), (ins F8RC:$frB),
                      "fneg $frD, $frB", FPGeneral,
                      [(set F8RC:$frD, (fneg F8RC:$frB))]>;
}
                      

// XL-Form instructions.  condition register logical ops.
//
def MCRF   : XLForm_3<19, 0, (outs CRRC:$BF), (ins CRRC:$BFA),
                      "mcrf $BF, $BFA", BrMCR>,
             PPC970_DGroup_First, PPC970_Unit_CRU;

def CREQV  : XLForm_1<19, 289, (outs CRBITRC:$CRD),
                               (ins CRBITRC:$CRA, CRBITRC:$CRB),
                      "creqv $CRD, $CRA, $CRB", BrCR,
                      []>;

def CROR  : XLForm_1<19, 449, (outs CRBITRC:$CRD),
                               (ins CRBITRC:$CRA, CRBITRC:$CRB),
                      "cror $CRD, $CRA, $CRB", BrCR,
                      []>;

def CRSET  : XLForm_1_ext<19, 289, (outs CRBITRC:$dst), (ins),
              "creqv $dst, $dst, $dst", BrCR,
              []>;

// XFX-Form instructions.  Instructions that deal with SPRs.
//
let Uses = [CTR] in {
def MFCTR : XFXForm_1_ext<31, 339, 9, (outs GPRC:$rT), (ins),
                          "mfctr $rT", SprMFSPR>,
            PPC970_DGroup_First, PPC970_Unit_FXU;
}
let Defs = [CTR], Pattern = [(PPCmtctr GPRC:$rS)] in {
def MTCTR : XFXForm_7_ext<31, 467, 9, (outs), (ins GPRC:$rS),
                          "mtctr $rS", SprMTSPR>,
            PPC970_DGroup_First, PPC970_Unit_FXU;
}

let Defs = [LR] in {
def MTLR  : XFXForm_7_ext<31, 467, 8, (outs), (ins GPRC:$rS),
                          "mtlr $rS", SprMTSPR>,
            PPC970_DGroup_First, PPC970_Unit_FXU;
}
let Uses = [LR] in {
def MFLR  : XFXForm_1_ext<31, 339, 8, (outs GPRC:$rT), (ins),
                          "mflr $rT", SprMFSPR>,
            PPC970_DGroup_First, PPC970_Unit_FXU;
}

// Move to/from VRSAVE: despite being a SPR, the VRSAVE register is renamed like
// a GPR on the PPC970.  As such, copies in and out have the same performance
// characteristics as an OR instruction.
def MTVRSAVE : XFXForm_7_ext<31, 467, 256, (outs), (ins GPRC:$rS),
                             "mtspr 256, $rS", IntGeneral>,
               PPC970_DGroup_Single, PPC970_Unit_FXU;
def MFVRSAVE : XFXForm_1_ext<31, 339, 256, (outs GPRC:$rT), (ins),
                             "mfspr $rT, 256", IntGeneral>,
               PPC970_DGroup_First, PPC970_Unit_FXU;

def MTCRF : XFXForm_5<31, 144, (outs), (ins crbitm:$FXM, GPRC:$rS),
                      "mtcrf $FXM, $rS", BrMCRX>,
            PPC970_MicroCode, PPC970_Unit_CRU;

// This is a pseudo for MFCR, which implicitly uses all 8 of its subregisters;
// declaring that here gives the local register allocator problems with this:
//  vreg = MCRF  CR0
//  MFCR  <kill of whatever preg got assigned to vreg>
// while not declaring it breaks DeadMachineInstructionElimination.
// As it turns out, in all cases where we currently use this,
// we're only interested in one subregister of it.  Represent this in the
// instruction to keep the register allocator from becoming confused.
//
// FIXME: Make this a real Pseudo instruction when the JIT switches to MC.
def MFCRpseud: XFXForm_3<31, 19, (outs GPRC:$rT), (ins crbitm:$FXM),
                       "", SprMFCR>,
            PPC970_MicroCode, PPC970_Unit_CRU;
            
def MFCR : XFXForm_3<31, 19, (outs GPRC:$rT), (ins),
                     "mfcr $rT", SprMFCR>,
                     PPC970_MicroCode, PPC970_Unit_CRU;

def MFOCRF: XFXForm_5a<31, 19, (outs GPRC:$rT), (ins crbitm:$FXM),
                       "mfcr $rT, $FXM", SprMFCR>,
            PPC970_DGroup_First, PPC970_Unit_CRU;

// Instructions to manipulate FPSCR.  Only long double handling uses these.
// FPSCR is not modelled; we use the SDNode Flag to keep things in order.

let Uses = [RM], Defs = [RM] in { 
  def MTFSB0 : XForm_43<63, 70, (outs), (ins u5imm:$FM),
                         "mtfsb0 $FM", IntMTFSB0,
                        [(PPCmtfsb0 (i32 imm:$FM))]>,
               PPC970_DGroup_Single, PPC970_Unit_FPU;
  def MTFSB1 : XForm_43<63, 38, (outs), (ins u5imm:$FM),
                         "mtfsb1 $FM", IntMTFSB0,
                        [(PPCmtfsb1 (i32 imm:$FM))]>,
               PPC970_DGroup_Single, PPC970_Unit_FPU;
  // MTFSF does not actually produce an FP result.  We pretend it copies
  // input reg B to the output.  If we didn't do this it would look like the
  // instruction had no outputs (because we aren't modelling the FPSCR) and
  // it would be deleted.
  def MTFSF  : XFLForm<63, 711, (outs F8RC:$FRA),
                                (ins i32imm:$FM, F8RC:$rT, F8RC:$FRB),
                         "mtfsf $FM, $rT", "$FRB = $FRA", IntMTFSB0,
                         [(set F8RC:$FRA, (PPCmtfsf (i32 imm:$FM), 
                                                     F8RC:$rT, F8RC:$FRB))]>,
               PPC970_DGroup_Single, PPC970_Unit_FPU;
}
let Uses = [RM] in {
  def MFFS   : XForm_42<63, 583, (outs F8RC:$rT), (ins), 
                         "mffs $rT", IntMFFS,
                         [(set F8RC:$rT, (PPCmffs))]>,
               PPC970_DGroup_Single, PPC970_Unit_FPU;
  def FADDrtz: AForm_2<63, 21,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRB),
                      "fadd $FRT, $FRA, $FRB", FPGeneral,
                      [(set F8RC:$FRT, (PPCfaddrtz F8RC:$FRA, F8RC:$FRB))]>,
               PPC970_DGroup_Single, PPC970_Unit_FPU;
}


let PPC970_Unit = 1 in {  // FXU Operations.

// XO-Form instructions.  Arithmetic instructions that can set overflow bit
//
def ADD4  : XOForm_1<31, 266, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "add $rT, $rA, $rB", IntGeneral,
                     [(set GPRC:$rT, (add GPRC:$rA, GPRC:$rB))]>;
let Defs = [CARRY] in {
def ADDC  : XOForm_1<31, 10, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "addc $rT, $rA, $rB", IntGeneral,
                     [(set GPRC:$rT, (addc GPRC:$rA, GPRC:$rB))]>,
                     PPC970_DGroup_Cracked;
}
def DIVW  : XOForm_1<31, 491, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "divw $rT, $rA, $rB", IntDivW,
                     [(set GPRC:$rT, (sdiv GPRC:$rA, GPRC:$rB))]>,
                     PPC970_DGroup_First, PPC970_DGroup_Cracked;
def DIVWU : XOForm_1<31, 459, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "divwu $rT, $rA, $rB", IntDivW,
                     [(set GPRC:$rT, (udiv GPRC:$rA, GPRC:$rB))]>,
                     PPC970_DGroup_First, PPC970_DGroup_Cracked;
def MULHW : XOForm_1<31, 75, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "mulhw $rT, $rA, $rB", IntMulHW,
                     [(set GPRC:$rT, (mulhs GPRC:$rA, GPRC:$rB))]>;
def MULHWU : XOForm_1<31, 11, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "mulhwu $rT, $rA, $rB", IntMulHWU,
                     [(set GPRC:$rT, (mulhu GPRC:$rA, GPRC:$rB))]>;
def MULLW : XOForm_1<31, 235, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "mullw $rT, $rA, $rB", IntMulHW,
                     [(set GPRC:$rT, (mul GPRC:$rA, GPRC:$rB))]>;
def SUBF  : XOForm_1<31, 40, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "subf $rT, $rA, $rB", IntGeneral,
                     [(set GPRC:$rT, (sub GPRC:$rB, GPRC:$rA))]>;
let Defs = [CARRY] in {
def SUBFC : XOForm_1<31, 8, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                     "subfc $rT, $rA, $rB", IntGeneral,
                     [(set GPRC:$rT, (subc GPRC:$rB, GPRC:$rA))]>,
                     PPC970_DGroup_Cracked;
}
def NEG    : XOForm_3<31, 104, 0, (outs GPRC:$rT), (ins GPRC:$rA),
                      "neg $rT, $rA", IntGeneral,
                      [(set GPRC:$rT, (ineg GPRC:$rA))]>;
let Uses = [CARRY], Defs = [CARRY] in {
def ADDE  : XOForm_1<31, 138, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                      "adde $rT, $rA, $rB", IntGeneral,
                      [(set GPRC:$rT, (adde GPRC:$rA, GPRC:$rB))]>;
def ADDME  : XOForm_3<31, 234, 0, (outs GPRC:$rT), (ins GPRC:$rA),
                      "addme $rT, $rA", IntGeneral,
                      [(set GPRC:$rT, (adde GPRC:$rA, -1))]>;
def ADDZE  : XOForm_3<31, 202, 0, (outs GPRC:$rT), (ins GPRC:$rA),
                      "addze $rT, $rA", IntGeneral,
                      [(set GPRC:$rT, (adde GPRC:$rA, 0))]>;
def SUBFE : XOForm_1<31, 136, 0, (outs GPRC:$rT), (ins GPRC:$rA, GPRC:$rB),
                      "subfe $rT, $rA, $rB", IntGeneral,
                      [(set GPRC:$rT, (sube GPRC:$rB, GPRC:$rA))]>;
def SUBFME : XOForm_3<31, 232, 0, (outs GPRC:$rT), (ins GPRC:$rA),
                      "subfme $rT, $rA", IntGeneral,
                      [(set GPRC:$rT, (sube -1, GPRC:$rA))]>;
def SUBFZE : XOForm_3<31, 200, 0, (outs GPRC:$rT), (ins GPRC:$rA),
                      "subfze $rT, $rA", IntGeneral,
                      [(set GPRC:$rT, (sube 0, GPRC:$rA))]>;
}
}

// A-Form instructions.  Most of the instructions executed in the FPU are of
// this type.
//
let PPC970_Unit = 3 in {  // FPU Operations.
let Uses = [RM] in {
  def FMADD : AForm_1<63, 29, 
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRC, F8RC:$FRB),
                      "fmadd $FRT, $FRA, $FRC, $FRB", FPFused,
                      [(set F8RC:$FRT, (fadd (fmul F8RC:$FRA, F8RC:$FRC),
                                             F8RC:$FRB))]>,
                      Requires<[FPContractions]>;
  def FMADDS : AForm_1<59, 29,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRC, F4RC:$FRB),
                      "fmadds $FRT, $FRA, $FRC, $FRB", FPGeneral,
                      [(set F4RC:$FRT, (fadd (fmul F4RC:$FRA, F4RC:$FRC),
                                             F4RC:$FRB))]>,
                      Requires<[FPContractions]>;
  def FMSUB : AForm_1<63, 28,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRC, F8RC:$FRB),
                      "fmsub $FRT, $FRA, $FRC, $FRB", FPFused,
                      [(set F8RC:$FRT, (fsub (fmul F8RC:$FRA, F8RC:$FRC),
                                             F8RC:$FRB))]>,
                      Requires<[FPContractions]>;
  def FMSUBS : AForm_1<59, 28,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRC, F4RC:$FRB),
                      "fmsubs $FRT, $FRA, $FRC, $FRB", FPGeneral,
                      [(set F4RC:$FRT, (fsub (fmul F4RC:$FRA, F4RC:$FRC),
                                             F4RC:$FRB))]>,
                      Requires<[FPContractions]>;
  def FNMADD : AForm_1<63, 31,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRC, F8RC:$FRB),
                      "fnmadd $FRT, $FRA, $FRC, $FRB", FPFused,
                      [(set F8RC:$FRT, (fneg (fadd (fmul F8RC:$FRA, F8RC:$FRC),
                                                   F8RC:$FRB)))]>,
                      Requires<[FPContractions]>;
  def FNMADDS : AForm_1<59, 31,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRC, F4RC:$FRB),
                      "fnmadds $FRT, $FRA, $FRC, $FRB", FPGeneral,
                      [(set F4RC:$FRT, (fneg (fadd (fmul F4RC:$FRA, F4RC:$FRC),
                                                   F4RC:$FRB)))]>,
                      Requires<[FPContractions]>;
  def FNMSUB : AForm_1<63, 30,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRC, F8RC:$FRB),
                      "fnmsub $FRT, $FRA, $FRC, $FRB", FPFused,
                      [(set F8RC:$FRT, (fneg (fsub (fmul F8RC:$FRA, F8RC:$FRC),
                                                   F8RC:$FRB)))]>,
                      Requires<[FPContractions]>;
  def FNMSUBS : AForm_1<59, 30,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRC, F4RC:$FRB),
                      "fnmsubs $FRT, $FRA, $FRC, $FRB", FPGeneral,
                      [(set F4RC:$FRT, (fneg (fsub (fmul F4RC:$FRA, F4RC:$FRC),
                                                   F4RC:$FRB)))]>,
                      Requires<[FPContractions]>;
}
// FSEL is artificially split into 4 and 8-byte forms for the result.  To avoid
// having 4 of these, force the comparison to always be an 8-byte double (code
// should use an FMRSD if the input comparison value really wants to be a float)
// and 4/8 byte forms for the result and operand type..
def FSELD : AForm_1<63, 23,
                    (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRC, F8RC:$FRB),
                    "fsel $FRT, $FRA, $FRC, $FRB", FPGeneral,
                    [(set F8RC:$FRT, (PPCfsel F8RC:$FRA,F8RC:$FRC,F8RC:$FRB))]>;
def FSELS : AForm_1<63, 23,
                     (outs F4RC:$FRT), (ins F8RC:$FRA, F4RC:$FRC, F4RC:$FRB),
                     "fsel $FRT, $FRA, $FRC, $FRB", FPGeneral,
                    [(set F4RC:$FRT, (PPCfsel F8RC:$FRA,F4RC:$FRC,F4RC:$FRB))]>;
let Uses = [RM] in {
  def FADD  : AForm_2<63, 21,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRB),
                      "fadd $FRT, $FRA, $FRB", FPGeneral,
                      [(set F8RC:$FRT, (fadd F8RC:$FRA, F8RC:$FRB))]>;
  def FADDS : AForm_2<59, 21,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRB),
                      "fadds $FRT, $FRA, $FRB", FPGeneral,
                      [(set F4RC:$FRT, (fadd F4RC:$FRA, F4RC:$FRB))]>;
  def FDIV  : AForm_2<63, 18,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRB),
                      "fdiv $FRT, $FRA, $FRB", FPDivD,
                      [(set F8RC:$FRT, (fdiv F8RC:$FRA, F8RC:$FRB))]>;
  def FDIVS : AForm_2<59, 18,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRB),
                      "fdivs $FRT, $FRA, $FRB", FPDivS,
                      [(set F4RC:$FRT, (fdiv F4RC:$FRA, F4RC:$FRB))]>;
  def FMUL  : AForm_3<63, 25,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRB),
                      "fmul $FRT, $FRA, $FRB", FPFused,
                      [(set F8RC:$FRT, (fmul F8RC:$FRA, F8RC:$FRB))]>;
  def FMULS : AForm_3<59, 25,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRB),
                      "fmuls $FRT, $FRA, $FRB", FPGeneral,
                      [(set F4RC:$FRT, (fmul F4RC:$FRA, F4RC:$FRB))]>;
  def FSUB  : AForm_2<63, 20,
                      (outs F8RC:$FRT), (ins F8RC:$FRA, F8RC:$FRB),
                      "fsub $FRT, $FRA, $FRB", FPGeneral,
                      [(set F8RC:$FRT, (fsub F8RC:$FRA, F8RC:$FRB))]>;
  def FSUBS : AForm_2<59, 20,
                      (outs F4RC:$FRT), (ins F4RC:$FRA, F4RC:$FRB),
                      "fsubs $FRT, $FRA, $FRB", FPGeneral,
                      [(set F4RC:$FRT, (fsub F4RC:$FRA, F4RC:$FRB))]>;
  }
}

let PPC970_Unit = 1 in {  // FXU Operations.
// M-Form instructions.  rotate and mask instructions.
//
let isCommutable = 1 in {
// RLWIMI can be commuted if the rotate amount is zero.
def RLWIMI : MForm_2<20,
                     (outs GPRC:$rA), (ins GPRC:$rSi, GPRC:$rS, u5imm:$SH, u5imm:$MB, 
                      u5imm:$ME), "rlwimi $rA, $rS, $SH, $MB, $ME", IntRotate,
                      []>, PPC970_DGroup_Cracked, RegConstraint<"$rSi = $rA">,
                      NoEncode<"$rSi">;
}
def RLWINM : MForm_2<21,
                     (outs GPRC:$rA), (ins GPRC:$rS, u5imm:$SH, u5imm:$MB, u5imm:$ME),
                     "rlwinm $rA, $rS, $SH, $MB, $ME", IntGeneral,
                     []>;
def RLWINMo : MForm_2<21,
                     (outs GPRC:$rA), (ins GPRC:$rS, u5imm:$SH, u5imm:$MB, u5imm:$ME),
                     "rlwinm. $rA, $rS, $SH, $MB, $ME", IntGeneral,
                     []>, isDOT, PPC970_DGroup_Cracked;
def RLWNM  : MForm_2<23,
                     (outs GPRC:$rA), (ins GPRC:$rS, GPRC:$rB, u5imm:$MB, u5imm:$ME),
                     "rlwnm $rA, $rS, $rB, $MB, $ME", IntGeneral,
                     []>;
}


//===----------------------------------------------------------------------===//
// PowerPC Instruction Patterns
//

// Arbitrary immediate support.  Implement in terms of LIS/ORI.
def : Pat<(i32 imm:$imm),
          (ORI (LIS (HI16 imm:$imm)), (LO16 imm:$imm))>;

// Implement the 'not' operation with the NOR instruction.
def NOT : Pat<(not GPRC:$in),
              (NOR GPRC:$in, GPRC:$in)>;

// ADD an arbitrary immediate.
def : Pat<(add GPRC:$in, imm:$imm),
          (ADDIS (ADDI GPRC:$in, (LO16 imm:$imm)), (HA16 imm:$imm))>;
// OR an arbitrary immediate.
def : Pat<(or GPRC:$in, imm:$imm),
          (ORIS (ORI GPRC:$in, (LO16 imm:$imm)), (HI16 imm:$imm))>;
// XOR an arbitrary immediate.
def : Pat<(xor GPRC:$in, imm:$imm),
          (XORIS (XORI GPRC:$in, (LO16 imm:$imm)), (HI16 imm:$imm))>;
// SUBFIC
def : Pat<(sub  immSExt16:$imm, GPRC:$in),
          (SUBFIC GPRC:$in, imm:$imm)>;

// SHL/SRL
def : Pat<(shl GPRC:$in, (i32 imm:$imm)),
          (RLWINM GPRC:$in, imm:$imm, 0, (SHL32 imm:$imm))>;
def : Pat<(srl GPRC:$in, (i32 imm:$imm)),
          (RLWINM GPRC:$in, (SRL32 imm:$imm), imm:$imm, 31)>;

// ROTL
def : Pat<(rotl GPRC:$in, GPRC:$sh),
          (RLWNM GPRC:$in, GPRC:$sh, 0, 31)>;
def : Pat<(rotl GPRC:$in, (i32 imm:$imm)),
          (RLWINM GPRC:$in, imm:$imm, 0, 31)>;

// RLWNM
def : Pat<(and (rotl GPRC:$in, GPRC:$sh), maskimm32:$imm),
          (RLWNM GPRC:$in, GPRC:$sh, (MB maskimm32:$imm), (ME maskimm32:$imm))>;

// Calls
def : Pat<(PPCcall_Darwin (i32 tglobaladdr:$dst)),
          (BL_Darwin tglobaladdr:$dst)>;
def : Pat<(PPCcall_Darwin (i32 texternalsym:$dst)),
          (BL_Darwin texternalsym:$dst)>;
def : Pat<(PPCcall_SVR4 (i32 tglobaladdr:$dst)),
          (BL_SVR4 tglobaladdr:$dst)>;
def : Pat<(PPCcall_SVR4 (i32 texternalsym:$dst)),
          (BL_SVR4 texternalsym:$dst)>;


def : Pat<(PPCtc_return (i32 tglobaladdr:$dst),  imm:$imm),
          (TCRETURNdi tglobaladdr:$dst, imm:$imm)>;

def : Pat<(PPCtc_return (i32 texternalsym:$dst), imm:$imm),
          (TCRETURNdi texternalsym:$dst, imm:$imm)>;

def : Pat<(PPCtc_return CTRRC:$dst, imm:$imm),
          (TCRETURNri CTRRC:$dst, imm:$imm)>;



// Hi and Lo for Darwin Global Addresses.
def : Pat<(PPChi tglobaladdr:$in, 0), (LIS tglobaladdr:$in)>;
def : Pat<(PPClo tglobaladdr:$in, 0), (LI tglobaladdr:$in)>;
def : Pat<(PPChi tconstpool:$in, 0), (LIS tconstpool:$in)>;
def : Pat<(PPClo tconstpool:$in, 0), (LI tconstpool:$in)>;
def : Pat<(PPChi tjumptable:$in, 0), (LIS tjumptable:$in)>;
def : Pat<(PPClo tjumptable:$in, 0), (LI tjumptable:$in)>;
def : Pat<(PPChi tblockaddress:$in, 0), (LIS tblockaddress:$in)>;
def : Pat<(PPClo tblockaddress:$in, 0), (LI tblockaddress:$in)>;
def : Pat<(add GPRC:$in, (PPChi tglobaladdr:$g, 0)),
          (ADDIS GPRC:$in, tglobaladdr:$g)>;
def : Pat<(add GPRC:$in, (PPChi tconstpool:$g, 0)),
          (ADDIS GPRC:$in, tconstpool:$g)>;
def : Pat<(add GPRC:$in, (PPChi tjumptable:$g, 0)),
          (ADDIS GPRC:$in, tjumptable:$g)>;
def : Pat<(add GPRC:$in, (PPChi tblockaddress:$g, 0)),
          (ADDIS GPRC:$in, tblockaddress:$g)>;

// Fused negative multiply subtract, alternate pattern
def : Pat<(fsub F8RC:$B, (fmul F8RC:$A, F8RC:$C)),
          (FNMSUB F8RC:$A, F8RC:$C, F8RC:$B)>,
          Requires<[FPContractions]>;
def : Pat<(fsub F4RC:$B, (fmul F4RC:$A, F4RC:$C)),
          (FNMSUBS F4RC:$A, F4RC:$C, F4RC:$B)>,
          Requires<[FPContractions]>;

// Standard shifts.  These are represented separately from the real shifts above
// so that we can distinguish between shifts that allow 5-bit and 6-bit shift
// amounts.
def : Pat<(sra GPRC:$rS, GPRC:$rB),
          (SRAW GPRC:$rS, GPRC:$rB)>;
def : Pat<(srl GPRC:$rS, GPRC:$rB),
          (SRW GPRC:$rS, GPRC:$rB)>;
def : Pat<(shl GPRC:$rS, GPRC:$rB),
          (SLW GPRC:$rS, GPRC:$rB)>;

def : Pat<(zextloadi1 iaddr:$src),
          (LBZ iaddr:$src)>;
def : Pat<(zextloadi1 xaddr:$src),
          (LBZX xaddr:$src)>;
def : Pat<(extloadi1 iaddr:$src),
          (LBZ iaddr:$src)>;
def : Pat<(extloadi1 xaddr:$src),
          (LBZX xaddr:$src)>;
def : Pat<(extloadi8 iaddr:$src),
          (LBZ iaddr:$src)>;
def : Pat<(extloadi8 xaddr:$src),
          (LBZX xaddr:$src)>;
def : Pat<(extloadi16 iaddr:$src),
          (LHZ iaddr:$src)>;
def : Pat<(extloadi16 xaddr:$src),
          (LHZX xaddr:$src)>;
def : Pat<(f64 (extloadf32 iaddr:$src)),
          (COPY_TO_REGCLASS (LFS iaddr:$src), F8RC)>;
def : Pat<(f64 (extloadf32 xaddr:$src)),
          (COPY_TO_REGCLASS (LFSX xaddr:$src), F8RC)>;

def : Pat<(f64 (fextend F4RC:$src)),
          (COPY_TO_REGCLASS F4RC:$src, F8RC)>;

// Memory barriers
def : Pat<(membarrier (i32 imm /*ll*/),
                      (i32 imm /*ls*/),
                      (i32 imm /*sl*/),
                      (i32 imm /*ss*/),
                      (i32 imm /*device*/)),
           (SYNC)>;

include "PPCInstrAltivec.td"
include "PPCInstr64Bit.td"