lib/Target/PowerPC/PPCInstrInfo.td

//===- PowerPCInstrInfo.td - The PowerPC Instruction Set -----*- tablegen -*-=//
// 
//                     The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and 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 "PowerPCInstrFormats.td"

let isTerminator = 1, isReturn = 1 in
  def BLR : XLForm_2_ext<19, 16, 20, 31, 1, 0, 0, (ops), "blr">;

def u5imm   : Operand<i8> {
  let PrintMethod = "printU5ImmOperand";
}
def u6imm   : Operand<i8> {
  let PrintMethod = "printU6ImmOperand";
}
def s16imm  : Operand<i16> {
  let PrintMethod = "printS16ImmOperand";
}
def u16imm  : Operand<i16> {
  let PrintMethod = "printU16ImmOperand";
}
def target : Operand<i32> {
  let PrintMethod = "printBranchOperand";
}
def piclabel: Operand<i32> {
  let PrintMethod = "printPICLabel";
}
def symbolHi: Operand<i32> {
  let PrintMethod = "printSymbolHi";
}
def symbolLo: Operand<i32> {
  let PrintMethod = "printSymbolLo";
}

// Pseudo-instructions:
def PHI : Pseudo<(ops), "; PHI">;
let isLoad = 1 in {
def ADJCALLSTACKDOWN : Pseudo<(ops), "; ADJCALLSTACKDOWN">;
def ADJCALLSTACKUP : Pseudo<(ops), "; ADJCALLSTACKUP">;
}
def IMPLICIT_DEF : Pseudo<(ops), "; IMPLICIT_DEF">;
def MovePCtoLR : Pseudo<(ops piclabel:$label), "bl $label">;

let isBranch = 1, isTerminator = 1 in {
  def COND_BRANCH : Pseudo<(ops), "; COND_BRANCH">;
  def B   : IForm<18, 0, 0, 0, 0, (ops target:$func), "b $func">;
  def BA  : IForm<18, 1, 0, 0, 0, (ops target:$func), "ba $func">;
  def BL  : IForm<18, 0, 1, 0, 0, (ops target:$func), "bl $func">;
  def BLA : IForm<18, 1, 1, 0, 0, (ops target:$func), "bla $func">;
  // FIXME: 4*CR# needs to be added to the BI field!
  // This will only work for CR0 as it stands now
  def BLT : BForm_ext<16, 0, 0, 12, 0, 0, 0, (ops CRRC:$crS, target:$block),
                      "blt $block">;
  def BLE : BForm_ext<16, 0, 0, 4,  1, 0, 0, (ops CRRC:$crS, target:$block),
                      "ble $block">;
  def BEQ : BForm_ext<16, 0, 0, 12, 2, 0, 0, (ops CRRC:$crS, target:$block),
                      "beq $block">;
  def BGE : BForm_ext<16, 0, 0, 4,  0, 0, 0, (ops CRRC:$crS, target:$block),
                      "bge $block">;
  def BGT : BForm_ext<16, 0, 0, 12, 1, 0, 0, (ops CRRC:$crS, target:$block),
                      "bgt $block">;
  def BNE : BForm_ext<16, 0, 0, 4,  2, 0, 0, (ops CRRC:$crS, target:$block),
                      "bne $block">;
}

let isBranch = 1, isTerminator = 1, isCall = 1, 
  // 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,
          LR,XER,CTR,
          CR0,CR1,CR5,CR6,CR7] in {
  // Convenient aliases for call instructions
  def CALLpcrel : IForm<18, 0, 1, 0, 0, (ops target:$func), "bl $func">;
  def CALLindirect : XLForm_2_ext<19, 528, 20, 31, 1, 0, 0, (ops), "bctrl">;
}

// D-Form instructions.  Most instructions that perform an operation on a
// register and an immediate are of this type.
//
let isLoad = 1 in {
def LBZ : DForm_1<35, 0, 0, (ops GPRC:$rD, s16imm:$disp, GPRC:$rA),
                  "lbz $rD, $disp($rA)">;
def LHA : DForm_1<42, 0, 0, (ops GPRC:$rD, s16imm:$disp, GPRC:$rA),
                  "lha $rD, $disp($rA)">;
def LHZ : DForm_1<40, 0, 0, (ops GPRC:$rD, s16imm:$disp, GPRC:$rA),
                  "lhz $rD, $disp($rA)">;
def LMW : DForm_1<46, 0, 0, (ops GPRC:$rD, s16imm:$disp, GPRC:$rA),
                  "lmw $rD, $disp($rA)">;
def LWZ : DForm_1<32, 0, 0, (ops GPRC:$rD, symbolLo:$disp, GPRC:$rA),
                  "lwz $rD, $disp($rA)">;
}
def ADDI   : DForm_2<14, 0, 0, (ops GPRC:$rD, GPRC:$rA, s16imm:$imm),
                     "addi $rD, $rA, $imm">;
def ADDIC  : DForm_2<12, 0, 0, (ops GPRC:$rD, GPRC:$rA, s16imm:$imm),
                     "addic $rD, $rA, $imm">;
def ADDICo : DForm_2<13, 0, 0, (ops GPRC:$rD, GPRC:$rA, s16imm:$imm),
                     "addic. $rD, $rA, $imm">;
def ADDIS  : DForm_2<15, 0, 0, (ops GPRC:$rD, GPRC:$rA, s16imm:$imm),
                     "addis $rD, $rA, $imm">;
def LA     : DForm_2<14, 0, 0, (ops GPRC:$rD, symbolLo:$sym, GPRC:$rA),
                     "la $rD, $sym($rA)">;
def LOADHiAddr : DForm_2<15, 0, 0, (ops GPRC:$rD, GPRC:$rA, symbolHi:$sym),
                         "addis $rD, $rA, $sym">;
def MULLI  : DForm_2< 7, 0, 0, (ops GPRC:$rD, GPRC:$rA, s16imm:$imm),
                     "mulli $rD, $rA, $imm">;
def SUBFIC : DForm_2< 8, 0, 0, (ops GPRC:$rD, GPRC:$rA, s16imm:$imm),
                     "subfic $rD, $rA, $imm">;
def LI  : DForm_2_r0<14, 0, 0, (ops GPRC:$rD, s16imm:$imm),
                     "li $rD, $imm">;
def LIS : DForm_2_r0<15, 0, 0, (ops GPRC:$rD, s16imm:$imm),
                     "lis $rD, $imm">;
let isStore = 1 in {
def STMW : DForm_3<47, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "stmw $rS, $disp($rA)">;
def STB  : DForm_3<38, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "stb $rS, $disp($rA)">;
def STBU : DForm_3<39, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "stbu $rS, $disp($rA)">;
def STH  : DForm_3<44, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "sth $rS, $disp($rA)">;
def STHU : DForm_3<45, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "sthu $rS, $disp($rA)">;
def STW  : DForm_3<36, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "stw $rS, $disp($rA)">;
def STWU : DForm_3<37, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "stwu $rS, $disp($rA)">;
}
def ANDIo : DForm_4<28, 0, 0,
                    (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "andi. $dst, $src1, $src2">;
def ANDISo : DForm_4<29, 0, 0,
                    (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "andis. $dst, $src1, $src2">;
def ORI   : DForm_4<24, 0, 0,
                    (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "ori $dst, $src1, $src2">;
def ORIS  : DForm_4<25, 0, 0,
                    (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "oris $dst, $src1, $src2">;
def XORI  : DForm_4<26, 0, 0,
                    (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "xori $dst, $src1, $src2">;
def XORIS : DForm_4<27, 0, 0,
                    (ops GPRC:$dst, GPRC:$src1, u16imm:$src2),
                    "xoris $dst, $src1, $src2">;
def NOP   : DForm_4_zero<24, 0, 0, (ops), "nop">;
def CMPI  : DForm_5<11, 0, 0, (ops CRRC:$crD, i1imm:$L, GPRC:$rA, s16imm:$imm),
                    "cmpi $crD, $L, $rA, $imm">;
def CMPWI : DForm_5_ext<11, 0, 0, (ops CRRC:$crD, GPRC:$rA, s16imm:$imm),
                        "cmpwi $crD, $rA, $imm">;
def CMPDI : DForm_5_ext<11, 1, 0, (ops CRRC:$crD, GPRC:$rA, s16imm:$imm),
                        "cmpdi $crD, $rA, $imm">;
def CMPLI  : DForm_6<10, 0, 0,
                     (ops CRRC:$dst, i1imm:$size, GPRC:$src1, u16imm:$src2),
                     "cmpli $dst, $size, $src1, $src2">;
def CMPLWI : DForm_6_ext<10, 0, 0,
                         (ops CRRC:$dst, GPRC:$src1, u16imm:$src2),
                         "cmplwi $dst, $src1, $src2">;
def CMPLDI : DForm_6_ext<10, 1, 0,
                         (ops CRRC:$dst, GPRC:$src1, u16imm:$src2),
                         "cmpldi $dst, $src1, $src2">;
let isLoad = 1 in {
def LFS : DForm_8<48, 0, 0, (ops GPRC:$rD, symbolLo:$disp, GPRC:$rA),
                  "lfs $rD, $disp($rA)">;
def LFD : DForm_8<50, 0, 0, (ops GPRC:$rD, symbolLo:$disp, GPRC:$rA),
                  "lfd $rD, $disp($rA)">;
}
let isStore = 1 in {
def STFS : DForm_9<52, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "stfs $rS, $disp($rA)">;
def STFD : DForm_9<54, 0, 0, (ops GPRC:$rS, s16imm:$disp, GPRC:$rA),
                   "stfd $rS, $disp($rA)">;
}

// DS-Form instructions.  Load/Store instructions available in PPC-64
//
let isLoad = 1 in {
def LWA  : DSForm_1<58, 2, 1, 0, (ops GPRC:$rT, s16imm:$DS, GPRC:$rA),
                    "lwa $rT, $DS($rA)">;
def LD   : DSForm_2<58, 0, 1, 0, (ops GPRC:$rT, s16imm:$DS, GPRC:$rA),
                    "ld $rT, $DS($rA)">;
}
let isStore = 1 in {
def STD  : DSForm_2<62, 0, 1, 0, (ops GPRC:$rT, s16imm:$DS, GPRC:$rA),
                    "std $rT, $DS($rA)">;
def STDU : DSForm_2<62, 1, 1, 0, (ops GPRC:$rT, s16imm:$DS, GPRC:$rA),
                    "stdu $rT, $DS($rA)">;
}

// X-Form instructions.  Most instructions that perform an operation on a
// register and another register are of this type.
//
let isLoad = 1 in {
def LBZX : XForm_1<31,  87, 0, 0, (ops GPRC:$dst, GPRC:$base, GPRC:$index),
                   "lbzx $dst, $base, $index">;
def LHAX : XForm_1<31, 343, 0, 0, (ops GPRC:$dst, GPRC:$base, GPRC:$index),
                   "lhax $dst, $base, $index">;
def LHZX : XForm_1<31, 279, 0, 0, (ops GPRC:$dst, GPRC:$base, GPRC:$index),
                   "lhzx $dst, $base, $index">;
def LWAX : XForm_1<31, 341, 1, 0, (ops GPRC:$dst, GPRC:$base, GPRC:$index),
                   "lwax $dst, $base, $index">;
def LWZX : XForm_1<31,  23, 0, 0, (ops GPRC:$dst, GPRC:$base, GPRC:$index),
                   "lwzx $dst, $base, $index">;
def LDX  : XForm_1<31,  21, 1, 0, (ops GPRC:$dst, GPRC:$base, GPRC:$index),
                   "ldx $dst, $base, $index">;
}
def MFCR : XForm_5<31,  19, 0, 0, (ops GPRC:$dst), "mfcr $dst">;
def AND  : XForm_6<31,  28, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "and $rA, $rS, $rB">;
def ANDC : XForm_6<31,  60, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "andc $rA, $rS, $rB">;
def EQV  : XForm_6<31, 284, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "eqv $rA, $rS, $rB">;
def NAND : XForm_6<31, 476, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "nand $rA, $rS, $rB">;
def NOR  : XForm_6<31, 124, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "nor $rA, $rS, $rB">;
def OR   : XForm_6<31, 444, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "or $rA, $rS, $rB">;
def ORo  : XForm_6<31, 444, 1, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "or. $rA, $rS, $rB">;
def ORC  : XForm_6<31, 412, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "orc $rA, $rS, $rB">;
def SLD  : XForm_6<31,  27, 0, 1, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "sld $rA, $rS, $rB">;
def SLW  : XForm_6<31,  24, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "slw $rA, $rS, $rB">;
def SRD  : XForm_6<31, 539, 0, 1, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "srd $rA, $rS, $rB">;
def SRW  : XForm_6<31, 536, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "srw $rA, $rS, $rB">;
def SRAD : XForm_6<31, 794, 0, 1, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "srad $rA, $rS, $rB">;
def SRAW : XForm_6<31, 792, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "sraw $rA, $rS, $rB">;
def XOR  : XForm_6<31, 316, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, GPRC:$rB),
                   "xor $rA, $rS, $rB">;
let isStore = 1 in {
def STBX  : XForm_8<31, 215, 0, 0, (ops GPRC:$rS, GPRC:$rA, GPRC:$rB),
                   "stbx $rS, $rA, $rB">;
def STHX  : XForm_8<31, 407, 0, 0, (ops GPRC:$rS, GPRC:$rA, GPRC:$rB),
                   "sthx $rS, $rA, $rB">;
def STWX  : XForm_8<31, 151, 0, 0, (ops GPRC:$rS, GPRC:$rA, GPRC:$rB),
                   "stwx $rS, $rA, $rB">;
def STWUX : XForm_8<31, 183, 0, 0, (ops GPRC:$rS, GPRC:$rA, GPRC:$rB),
                   "stwux $rS, $rA, $rB">;
def STDX  : XForm_8<31, 149, 1, 0, (ops GPRC:$rS, GPRC:$rA, GPRC:$rB),
                   "stdx $rS, $rA, $rB">;
def STDUX : XForm_8<31, 181, 1, 0, (ops GPRC:$rS, GPRC:$rA, GPRC:$rB),
                   "stdux $rS, $rA, $rB">;
}
def SRAWI : XForm_10<31, 824, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS, u5imm:$SH), 
                     "srawi $rA, $rS, $SH">;
def CNTLZW : XForm_11<31,  26, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS),
                      "cntlzw $rA, $rS">;
def EXTSB  : XForm_11<31, 954, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS),
                      "extsb $rA, $rS">;
def EXTSH  : XForm_11<31, 922, 0, 0, 0, (ops GPRC:$rA, GPRC:$rS),
                      "extsh $rA, $rS">;
def EXTSW  : XForm_11<31, 986, 0, 1, 0, (ops GPRC:$rA, GPRC:$rS),
                      "extsw $rA, $rS">;
def CMP    : XForm_16<31, 0, 0, 0,
                      (ops CRRC:$crD, i1imm:$long, GPRC:$rA, GPRC:$rB),
                      "cmp $crD, $long, $rA, $rB">;
def CMPL   : XForm_16<31, 32, 0, 0,
                      (ops CRRC:$crD, i1imm:$long, GPRC:$rA, GPRC:$rB),
                      "cmpl $crD, $long, $rA, $rB">;
def CMPW   : XForm_16_ext<31, 0, 0, 0,
                          (ops CRRC:$crD, GPRC:$rA, GPRC:$rB),
                          "cmpw $crD, $rA, $rB">;
def CMPD   : XForm_16_ext<31, 0, 1, 0,
                          (ops CRRC:$crD, GPRC:$rA, GPRC:$rB),
                          "cmpd $crD, $rA, $rB">;
def CMPLW  : XForm_16_ext<31, 32, 0, 0,
                          (ops CRRC:$crD, GPRC:$rA, GPRC:$rB),
                          "cmplw $crD, $rA, $rB">;
def CMPLD  : XForm_16_ext<31, 32, 1, 0,
                          (ops CRRC:$crD, GPRC:$rA, GPRC:$rB),
                          "cmpld $crD, $rA, $rB">;
def FCMPU  : XForm_17<63, 0, 0, 0, (ops CRRC:$crD, FPRC:$fA, FPRC:$fB),
                      "fcmpu $crD, $fA, $fB">;
let isLoad = 1 in {
def LFSX   : XForm_25<31, 535, 0, 0, (ops FPRC:$dst, GPRC:$base, GPRC:$index),
                      "lfsx $dst, $base, $index">;
def LFDX   : XForm_25<31, 599, 0, 0, (ops FPRC:$dst, GPRC:$base, GPRC:$index),
                      "lfdx $dst, $base, $index">;
}
def FCFID  : XForm_26<63, 846, 0, 1, 0, (ops FPRC:$frD, FPRC:$frB),
                      "fcfid $frD, $frB">;
def FCTIDZ : XForm_26<63, 815, 0, 1, 0, (ops FPRC:$frD, FPRC:$frB),
                      "fctidz $frD, $frB">;
def FCTIWZ : XForm_26<63, 15, 0, 0, 0, (ops FPRC:$frD, FPRC:$frB),
                      "fctiwz $frD, $frB">;
def FMR    : XForm_26<63, 72, 0, 0, 0, (ops FPRC:$frD, FPRC:$frB),
                      "fmr $frD, $frB">;
def FNEG   : XForm_26<63, 80, 0, 0, 0, (ops FPRC:$frD, FPRC:$frB),
                      "fneg $frD, $frB">;
def FRSP   : XForm_26<63, 12, 0, 0, 0, (ops FPRC:$frD, FPRC:$frB),
                      "frsp $frD, $frB">;
let isStore = 1 in {
def STFSX : XForm_28<31, 663, 0, 0, (ops FPRC:$frS, GPRC:$rA, GPRC:$rB),
                     "stfsx $frS, $rA, $rB">;
def STFDX : XForm_28<31, 727, 0, 0, (ops FPRC:$frS, GPRC:$rA, GPRC:$rB),
                     "stfdx $frS, $rA, $rB">;
}

// XL-Form instructions.  condition register logical ops.
//
def CRAND  : XLForm_1<19, 257, 0, 0, (ops u5imm:$D, u5imm:$A, u5imm:$B),
                      "crand $D, $A, $B">;
def CRANDC : XLForm_1<19, 129, 0, 0, (ops u5imm:$D, u5imm:$A, u5imm:$B),
                      "crandc $D, $A, $B">;
def CRNOR  : XLForm_1<19,  33, 0, 0, (ops u5imm:$D, u5imm:$A, u5imm:$B),
                      "crnor $D, $A, $B">;
def CROR   : XLForm_1<19, 449, 0, 0, (ops u5imm:$D, u5imm:$A, u5imm:$B),
                      "cror $D, $A, $B">;

// XFX-Form instructions.  Instructions that deal with SPRs
//
// Note that although LR should be listed as `8' and CTR as `9' in the SPR
// field, the manual lists the groups of bits as [5-9] = 0, [0-4] = 8 or 9
// which means the SPR value needs to be multiplied by a factor of 32.
def MFCTR : XFXForm_1_ext<31, 339, 288, 0, 0, (ops GPRC:$rT), "mfctr $rT">;
def MFLR  : XFXForm_1_ext<31, 339, 256, 0, 0, (ops GPRC:$rT), "mflr $rT">;
def MTCTR : XFXForm_7_ext<31, 467, 288, 0, 0, (ops GPRC:$rS), "mtctr $rS">;
def MTLR  : XFXForm_7_ext<31, 467, 256, 0, 0, (ops GPRC:$rS), "mtlr $rS">;


// XS-Form instructions.  Just 'sradi'
//
def SRADI  : XSForm_1<31, 413, 0, 1, 0, (ops GPRC:$rA, GPRC:$rS, u6imm:$SH),
                      "sradi $rA, $rS, $SH">;

// XO-Form instructions.  Arithmetic instructions that can set overflow bit
//
def ADD   : XOForm_1<31, 266, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "add $rT, $rA, $rB">;
def ADDC  : XOForm_1<31, 10, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "addc $rT, $rA, $rB">;
def ADDE  : XOForm_1<31, 138, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "adde $rT, $rA, $rB">;
def DIVD  : XOForm_1<31, 489, 0, 0, 1, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "divd $rT, $rA, $rB">;
def DIVDU : XOForm_1<31, 457, 0, 0, 1, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "divdu $rT, $rA, $rB">;
def DIVW  : XOForm_1<31, 491, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "divw $rT, $rA, $rB">;
def DIVWU : XOForm_1<31, 459, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "divwu $rT, $rA, $rB">;
def MULHWU : XOForm_1<31, 11, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "mulhwu $rT, $rA, $rB">;
def MULLD : XOForm_1<31, 233, 0, 0, 1, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "mulld $rT, $rA, $rB">;
def MULLW : XOForm_1<31, 235, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "mullw $rT, $rA, $rB">;
def SUBF  : XOForm_1<31, 40, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "subf $rT, $rA, $rB">;
def SUBFC : XOForm_1<31, 8, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "subfc $rT, $rA, $rB">;
def SUBFE : XOForm_1<31, 136, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "subfe $rT, $rA, $rB">;
def SUB  : XOForm_1r<31, 40, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "sub $rT, $rA, $rB">;
def SUBC : XOForm_1r<31, 8, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA, GPRC:$rB),
                     "subc $rT, $rA, $rB">;
def ADDME  : XOForm_3<31, 234, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA),
                      "addme $rT, $rA">;
def ADDZE  : XOForm_3<31, 202, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA),
                      "addze $rT, $rA">;
def NEG    : XOForm_3<31, 104, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA),
                      "neg $rT, $rA">;
def SUBFZE : XOForm_3<31, 200, 0, 0, 0, 0, (ops GPRC:$rT, GPRC:$rA),
                      "subfze $rT, $rA">;

// A-Form instructions.  Most of the instructions executed in the FPU are of
// this type.
//
def FMADD : AForm_1<63, 29, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRC, FPRC:$FRB),
                    "fmadd $FRT, $FRA, $FRC, $FRB">;
def FSEL  : AForm_1<63, 23, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRC, FPRC:$FRB),
                    "fsel $FRT, $FRA, $FRC, $FRB">;
def FADD  : AForm_2<63, 21, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fadd $FRT, $FRA, $FRB">;
def FADDS : AForm_2<59, 21, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fadds $FRT, $FRA, $FRB">;
def FDIV  : AForm_2<63, 18, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fdiv $FRT, $FRA, $FRB">;
def FDIVS : AForm_2<59, 18, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fdivs $FRT, $FRA, $FRB">;
def FMUL  : AForm_3<63, 25, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fmul $FRT, $FRA, $FRB">;
def FMULS : AForm_3<59, 25, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fmuls $FRT, $FRA, $FRB">;
def FSUB  : AForm_2<63, 20, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fsub $FRT, $FRA, $FRB">;
def FSUBS : AForm_2<59, 20, 0, 0, 0,
                    (ops FPRC:$FRT, FPRC:$FRA, FPRC:$FRB),
                    "fsubs $FRT, $FRA, $FRB">;

// M-Form instructions.  rotate and mask instructions.
//
let isTwoAddress = 1 in {
def RLWIMI : MForm_2<20, 0, 0, 0,
                     (ops GPRC:$rA, GPRC:$rSi, GPRC:$rS, u5imm:$SH, u5imm:$MB, 
                      u5imm:$ME), "rlwimi $rA, $rS, $SH, $MB, $ME">;
}
def RLWINM : MForm_2<21, 0, 0, 0,
                     (ops GPRC:$rA, GPRC:$rS, u5imm:$SH, u5imm:$MB, u5imm:$ME),
                     "rlwinm $rA, $rS, $SH, $MB, $ME">;


// MD-Form instructions.  64 bit rotate instructions.
//
def RLDICL : MDForm_1<30, 0, 0, 1, 0, 
                      (ops GPRC:$rA, GPRC:$rS, u6imm:$SH, u6imm:$MB),
                      "rldicl $rA, $rS, $SH, $MB">;
def RLDICR : MDForm_1<30, 1, 0, 1, 0, 
                      (ops GPRC:$rA, GPRC:$rS, u6imm:$SH, u6imm:$ME),
                      "rldicr $rA, $rS, $SH, $ME">;