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//===-- ARMInstrThumb2.td - Thumb2 support for ARM ---------*- 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 Thumb2 instruction set.
//
//===----------------------------------------------------------------------===//
// IT block predicate field
def it_pred_asmoperand : AsmOperandClass {
let Name = "ITCondCode";
let ParserMethod = "parseITCondCode";
}
def it_pred : Operand<i32> {
let PrintMethod = "printMandatoryPredicateOperand";
let ParserMatchClass = it_pred_asmoperand;
}
// IT block condition mask
def it_mask_asmoperand : AsmOperandClass { let Name = "ITMask"; }
def it_mask : Operand<i32> {
let PrintMethod = "printThumbITMask";
let ParserMatchClass = it_mask_asmoperand;
}
// t2_shift_imm: An integer that encodes a shift amount and the type of shift
// (asr or lsl). The 6-bit immediate encodes as:
// {5} 0 ==> lsl
// 1 asr
// {4-0} imm5 shift amount.
// asr #32 not allowed
def t2_shift_imm : Operand<i32> {
let PrintMethod = "printShiftImmOperand";
let ParserMatchClass = ShifterImmAsmOperand;
let DecoderMethod = "DecodeT2ShifterImmOperand";
}
// Shifted operands. No register controlled shifts for Thumb2.
// Note: We do not support rrx shifted operands yet.
def t2_so_reg : Operand<i32>, // reg imm
ComplexPattern<i32, 2, "SelectT2ShifterOperandReg",
[shl,srl,sra,rotr]> {
let EncoderMethod = "getT2SORegOpValue";
let PrintMethod = "printT2SOOperand";
let DecoderMethod = "DecodeSORegImmOperand";
let ParserMatchClass = ShiftedImmAsmOperand;
let MIOperandInfo = (ops rGPR, i32imm);
}
// t2_so_imm_not_XFORM - Return the complement of a t2_so_imm value
def t2_so_imm_not_XFORM : SDNodeXForm<imm, [{
return CurDAG->getTargetConstant(~((uint32_t)N->getZExtValue()), MVT::i32);
}]>;
// t2_so_imm_neg_XFORM - Return the negation of a t2_so_imm value
def t2_so_imm_neg_XFORM : SDNodeXForm<imm, [{
return CurDAG->getTargetConstant(-((int)N->getZExtValue()), MVT::i32);
}]>;
// t2_so_imm - Match a 32-bit immediate operand, which is an
// 8-bit immediate rotated by an arbitrary number of bits, or an 8-bit
// immediate splatted into multiple bytes of the word.
def t2_so_imm_asmoperand : ImmAsmOperand { let Name = "T2SOImm"; }
def t2_so_imm : Operand<i32>, ImmLeaf<i32, [{
return ARM_AM::getT2SOImmVal(Imm) != -1;
}]> {
let ParserMatchClass = t2_so_imm_asmoperand;
let EncoderMethod = "getT2SOImmOpValue";
let DecoderMethod = "DecodeT2SOImm";
}
// t2_so_imm_not - Match an immediate that is a complement
// of a t2_so_imm.
// Note: this pattern doesn't require an encoder method and such, as it's
// only used on aliases (Pat<> and InstAlias<>). The actual encoding
// is handled by the destination instructions, which use t2_so_imm.
def t2_so_imm_not_asmoperand : AsmOperandClass { let Name = "T2SOImmNot"; }
def t2_so_imm_not : Operand<i32>, PatLeaf<(imm), [{
return ARM_AM::getT2SOImmVal(~((uint32_t)N->getZExtValue())) != -1;
}], t2_so_imm_not_XFORM> {
let ParserMatchClass = t2_so_imm_not_asmoperand;
}
// t2_so_imm_neg - Match an immediate that is a negation of a t2_so_imm.
def t2_so_imm_neg_asmoperand : AsmOperandClass { let Name = "T2SOImmNeg"; }
def t2_so_imm_neg : Operand<i32>, PatLeaf<(imm), [{
int64_t Value = -(int)N->getZExtValue();
return Value && ARM_AM::getT2SOImmVal(Value) != -1;
}], t2_so_imm_neg_XFORM> {
let ParserMatchClass = t2_so_imm_neg_asmoperand;
}
/// imm0_4095 predicate - True if the 32-bit immediate is in the range [0.4095].
def imm0_4095_asmoperand: ImmAsmOperand { let Name = "Imm0_4095"; }
def imm0_4095 : Operand<i32>, ImmLeaf<i32, [{
return Imm >= 0 && Imm < 4096;
}]> {
let ParserMatchClass = imm0_4095_asmoperand;
}
def imm0_4095_neg_asmoperand: AsmOperandClass { let Name = "Imm0_4095Neg"; }
def imm0_4095_neg : Operand<i32>, PatLeaf<(i32 imm), [{
return (uint32_t)(-N->getZExtValue()) < 4096;
}], imm_neg_XFORM> {
let ParserMatchClass = imm0_4095_neg_asmoperand;
}
def imm0_255_neg : PatLeaf<(i32 imm), [{
return (uint32_t)(-N->getZExtValue()) < 255;
}], imm_neg_XFORM>;
def imm0_255_not : PatLeaf<(i32 imm), [{
return (uint32_t)(~N->getZExtValue()) < 255;
}], imm_comp_XFORM>;
def lo5AllOne : PatLeaf<(i32 imm), [{
// Returns true if all low 5-bits are 1.
return (((uint32_t)N->getZExtValue()) & 0x1FUL) == 0x1FUL;
}]>;
// Define Thumb2 specific addressing modes.
// t2addrmode_imm12 := reg + imm12
def t2addrmode_imm12_asmoperand : AsmOperandClass {let Name="MemUImm12Offset";}
def t2addrmode_imm12 : Operand<i32>,
ComplexPattern<i32, 2, "SelectT2AddrModeImm12", []> {
let PrintMethod = "printAddrModeImm12Operand";
let EncoderMethod = "getAddrModeImm12OpValue";
let DecoderMethod = "DecodeT2AddrModeImm12";
let ParserMatchClass = t2addrmode_imm12_asmoperand;
let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
}
// t2ldrlabel := imm12
def t2ldrlabel : Operand<i32> {
let EncoderMethod = "getAddrModeImm12OpValue";
let PrintMethod = "printT2LdrLabelOperand";
}
def t2ldr_pcrel_imm12_asmoperand : AsmOperandClass {let Name = "MemPCRelImm12";}
def t2ldr_pcrel_imm12 : Operand<i32> {
let ParserMatchClass = t2ldr_pcrel_imm12_asmoperand;
// used for assembler pseudo instruction and maps to t2ldrlabel, so
// doesn't need encoder or print methods of its own.
}
// ADR instruction labels.
def t2adrlabel : Operand<i32> {
let EncoderMethod = "getT2AdrLabelOpValue";
}
// t2addrmode_posimm8 := reg + imm8
def MemPosImm8OffsetAsmOperand : AsmOperandClass {let Name="MemPosImm8Offset";}
def t2addrmode_posimm8 : Operand<i32> {
let PrintMethod = "printT2AddrModeImm8Operand";
let EncoderMethod = "getT2AddrModeImm8OpValue";
let DecoderMethod = "DecodeT2AddrModeImm8";
let ParserMatchClass = MemPosImm8OffsetAsmOperand;
let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
}
// t2addrmode_negimm8 := reg - imm8
def MemNegImm8OffsetAsmOperand : AsmOperandClass {let Name="MemNegImm8Offset";}
def t2addrmode_negimm8 : Operand<i32>,
ComplexPattern<i32, 2, "SelectT2AddrModeImm8", []> {
let PrintMethod = "printT2AddrModeImm8Operand";
let EncoderMethod = "getT2AddrModeImm8OpValue";
let DecoderMethod = "DecodeT2AddrModeImm8";
let ParserMatchClass = MemNegImm8OffsetAsmOperand;
let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
}
// t2addrmode_imm8 := reg +/- imm8
def MemImm8OffsetAsmOperand : AsmOperandClass { let Name = "MemImm8Offset"; }
def t2addrmode_imm8 : Operand<i32>,
ComplexPattern<i32, 2, "SelectT2AddrModeImm8", []> {
let PrintMethod = "printT2AddrModeImm8Operand";
let EncoderMethod = "getT2AddrModeImm8OpValue";
let DecoderMethod = "DecodeT2AddrModeImm8";
let ParserMatchClass = MemImm8OffsetAsmOperand;
let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
}
def t2am_imm8_offset : Operand<i32>,
ComplexPattern<i32, 1, "SelectT2AddrModeImm8Offset",
[], [SDNPWantRoot]> {
let PrintMethod = "printT2AddrModeImm8OffsetOperand";
let EncoderMethod = "getT2AddrModeImm8OffsetOpValue";
let DecoderMethod = "DecodeT2Imm8";
}
// t2addrmode_imm8s4 := reg +/- (imm8 << 2)
def MemImm8s4OffsetAsmOperand : AsmOperandClass {let Name = "MemImm8s4Offset";}
def t2addrmode_imm8s4 : Operand<i32> {
let PrintMethod = "printT2AddrModeImm8s4Operand";
let EncoderMethod = "getT2AddrModeImm8s4OpValue";
let DecoderMethod = "DecodeT2AddrModeImm8s4";
let ParserMatchClass = MemImm8s4OffsetAsmOperand;
let MIOperandInfo = (ops GPR:$base, i32imm:$offsimm);
}
def t2am_imm8s4_offset_asmoperand : AsmOperandClass { let Name = "Imm8s4"; }
def t2am_imm8s4_offset : Operand<i32> {
let PrintMethod = "printT2AddrModeImm8s4OffsetOperand";
let EncoderMethod = "getT2Imm8s4OpValue";
let DecoderMethod = "DecodeT2Imm8S4";
}
// t2addrmode_imm0_1020s4 := reg + (imm8 << 2)
def MemImm0_1020s4OffsetAsmOperand : AsmOperandClass {
let Name = "MemImm0_1020s4Offset";
}
def t2addrmode_imm0_1020s4 : Operand<i32> {
let PrintMethod = "printT2AddrModeImm0_1020s4Operand";
let EncoderMethod = "getT2AddrModeImm0_1020s4OpValue";
let DecoderMethod = "DecodeT2AddrModeImm0_1020s4";
let ParserMatchClass = MemImm0_1020s4OffsetAsmOperand;
let MIOperandInfo = (ops GPRnopc:$base, i32imm:$offsimm);
}
// t2addrmode_so_reg := reg + (reg << imm2)
def t2addrmode_so_reg_asmoperand : AsmOperandClass {let Name="T2MemRegOffset";}
def t2addrmode_so_reg : Operand<i32>,
ComplexPattern<i32, 3, "SelectT2AddrModeSoReg", []> {
let PrintMethod = "printT2AddrModeSoRegOperand";
let EncoderMethod = "getT2AddrModeSORegOpValue";
let DecoderMethod = "DecodeT2AddrModeSOReg";
let ParserMatchClass = t2addrmode_so_reg_asmoperand;
let MIOperandInfo = (ops GPR:$base, rGPR:$offsreg, i32imm:$offsimm);
}
// Addresses for the TBB/TBH instructions.
def addrmode_tbb_asmoperand : AsmOperandClass { let Name = "MemTBB"; }
def addrmode_tbb : Operand<i32> {
let PrintMethod = "printAddrModeTBB";
let ParserMatchClass = addrmode_tbb_asmoperand;
let MIOperandInfo = (ops GPR:$Rn, rGPR:$Rm);
}
def addrmode_tbh_asmoperand : AsmOperandClass { let Name = "MemTBH"; }
def addrmode_tbh : Operand<i32> {
let PrintMethod = "printAddrModeTBH";
let ParserMatchClass = addrmode_tbh_asmoperand;
let MIOperandInfo = (ops GPR:$Rn, rGPR:$Rm);
}
//===----------------------------------------------------------------------===//
// Multiclass helpers...
//
class T2OneRegImm<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<12> imm;
let Inst{11-8} = Rd;
let Inst{26} = imm{11};
let Inst{14-12} = imm{10-8};
let Inst{7-0} = imm{7-0};
}
class T2sOneRegImm<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2sI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{11-8} = Rd;
let Inst{26} = imm{11};
let Inst{14-12} = imm{10-8};
let Inst{7-0} = imm{7-0};
}
class T2OneRegCmpImm<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rn;
bits<12> imm;
let Inst{19-16} = Rn;
let Inst{26} = imm{11};
let Inst{14-12} = imm{10-8};
let Inst{7-0} = imm{7-0};
}
class T2OneRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<12> ShiftedRm;
let Inst{11-8} = Rd;
let Inst{3-0} = ShiftedRm{3-0};
let Inst{5-4} = ShiftedRm{6-5};
let Inst{14-12} = ShiftedRm{11-9};
let Inst{7-6} = ShiftedRm{8-7};
}
class T2sOneRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2sI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<12> ShiftedRm;
let Inst{11-8} = Rd;
let Inst{3-0} = ShiftedRm{3-0};
let Inst{5-4} = ShiftedRm{6-5};
let Inst{14-12} = ShiftedRm{11-9};
let Inst{7-6} = ShiftedRm{8-7};
}
class T2OneRegCmpShiftedReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rn;
bits<12> ShiftedRm;
let Inst{19-16} = Rn;
let Inst{3-0} = ShiftedRm{3-0};
let Inst{5-4} = ShiftedRm{6-5};
let Inst{14-12} = ShiftedRm{11-9};
let Inst{7-6} = ShiftedRm{8-7};
}
class T2TwoReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rm;
let Inst{11-8} = Rd;
let Inst{3-0} = Rm;
}
class T2sTwoReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2sI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rm;
let Inst{11-8} = Rd;
let Inst{3-0} = Rm;
}
class T2TwoRegCmp<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rn;
bits<4> Rm;
let Inst{19-16} = Rn;
let Inst{3-0} = Rm;
}
class T2TwoRegImm<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{26} = imm{11};
let Inst{14-12} = imm{10-8};
let Inst{7-0} = imm{7-0};
}
class T2sTwoRegImm<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2sI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{26} = imm{11};
let Inst{14-12} = imm{10-8};
let Inst{7-0} = imm{7-0};
}
class T2TwoRegShiftImm<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rm;
bits<5> imm;
let Inst{11-8} = Rd;
let Inst{3-0} = Rm;
let Inst{14-12} = imm{4-2};
let Inst{7-6} = imm{1-0};
}
class T2sTwoRegShiftImm<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2sI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rm;
bits<5> imm;
let Inst{11-8} = Rd;
let Inst{3-0} = Rm;
let Inst{14-12} = imm{4-2};
let Inst{7-6} = imm{1-0};
}
class T2ThreeReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{3-0} = Rm;
}
class T2sThreeReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2sI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{3-0} = Rm;
}
class T2TwoRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<12> ShiftedRm;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{3-0} = ShiftedRm{3-0};
let Inst{5-4} = ShiftedRm{6-5};
let Inst{14-12} = ShiftedRm{11-9};
let Inst{7-6} = ShiftedRm{8-7};
}
class T2sTwoRegShiftedReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2sI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<12> ShiftedRm;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{3-0} = ShiftedRm{3-0};
let Inst{5-4} = ShiftedRm{6-5};
let Inst{14-12} = ShiftedRm{11-9};
let Inst{7-6} = ShiftedRm{8-7};
}
class T2FourReg<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
bits<4> Ra;
let Inst{19-16} = Rn;
let Inst{15-12} = Ra;
let Inst{11-8} = Rd;
let Inst{3-0} = Rm;
}
class T2MulLong<bits<3> opc22_20, bits<4> opc7_4,
dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> RdLo;
bits<4> RdHi;
bits<4> Rn;
bits<4> Rm;
let Inst{31-23} = 0b111110111;
let Inst{22-20} = opc22_20;
let Inst{19-16} = Rn;
let Inst{15-12} = RdLo;
let Inst{11-8} = RdHi;
let Inst{7-4} = opc7_4;
let Inst{3-0} = Rm;
}
/// T2I_bin_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns for a
/// binary operation that produces a value. These are predicable and can be
/// changed to modify CPSR.
multiclass T2I_bin_irs<bits<4> opcod, string opc,
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
PatFrag opnode, string baseOpc, bit Commutable = 0,
string wide = ""> {
// shifted imm
def ri : T2sTwoRegImm<
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm), iii,
opc, "\t$Rd, $Rn, $imm",
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_imm:$imm))]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = opcod;
let Inst{15} = 0;
}
// register
def rr : T2sThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), iir,
opc, !strconcat(wide, "\t$Rd, $Rn, $Rm"),
[(set rGPR:$Rd, (opnode rGPR:$Rn, rGPR:$Rm))]> {
let isCommutable = Commutable;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
let Inst{14-12} = 0b000; // imm3
let Inst{7-6} = 0b00; // imm2
let Inst{5-4} = 0b00; // type
}
// shifted register
def rs : T2sTwoRegShiftedReg<
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm), iis,
opc, !strconcat(wide, "\t$Rd, $Rn, $ShiftedRm"),
[(set rGPR:$Rd, (opnode rGPR:$Rn, t2_so_reg:$ShiftedRm))]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
}
// Assembly aliases for optional destination operand when it's the same
// as the source operand.
def : t2InstAlias<!strconcat(opc, "${s}${p} $Rdn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) rGPR:$Rdn, rGPR:$Rdn,
t2_so_imm:$imm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", wide, " $Rdn, $Rm"),
(!cast<Instruction>(!strconcat(baseOpc, "rr")) rGPR:$Rdn, rGPR:$Rdn,
rGPR:$Rm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", wide, " $Rdn, $shift"),
(!cast<Instruction>(!strconcat(baseOpc, "rs")) rGPR:$Rdn, rGPR:$Rdn,
t2_so_reg:$shift, pred:$p,
cc_out:$s)>;
}
/// T2I_bin_w_irs - Same as T2I_bin_irs except these operations need
// the ".w" suffix to indicate that they are wide.
multiclass T2I_bin_w_irs<bits<4> opcod, string opc,
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
PatFrag opnode, string baseOpc, bit Commutable = 0> :
T2I_bin_irs<opcod, opc, iii, iir, iis, opnode, baseOpc, Commutable, ".w"> {
// Assembler aliases w/ the ".w" suffix.
def : t2InstAlias<!strconcat(opc, "${s}${p}.w", " $Rd, $Rn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) rGPR:$Rd, rGPR:$Rn,
t2_so_imm:$imm, pred:$p,
cc_out:$s)>;
// Assembler aliases w/o the ".w" suffix.
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rd, $Rn, $Rm"),
(!cast<Instruction>(!strconcat(baseOpc, "rr")) rGPR:$Rd, rGPR:$Rn,
rGPR:$Rm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rd, $Rn, $shift"),
(!cast<Instruction>(!strconcat(baseOpc, "rs")) rGPR:$Rd, rGPR:$Rn,
t2_so_reg:$shift, pred:$p,
cc_out:$s)>;
// and with the optional destination operand, too.
def : t2InstAlias<!strconcat(opc, "${s}${p}.w", " $Rdn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) rGPR:$Rdn, rGPR:$Rdn,
t2_so_imm:$imm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rdn, $Rm"),
(!cast<Instruction>(!strconcat(baseOpc, "rr")) rGPR:$Rdn, rGPR:$Rdn,
rGPR:$Rm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rdn, $shift"),
(!cast<Instruction>(!strconcat(baseOpc, "rs")) rGPR:$Rdn, rGPR:$Rdn,
t2_so_reg:$shift, pred:$p,
cc_out:$s)>;
}
/// T2I_rbin_is - Same as T2I_bin_irs except the order of operands are
/// reversed. The 'rr' form is only defined for the disassembler; for codegen
/// it is equivalent to the T2I_bin_irs counterpart.
multiclass T2I_rbin_irs<bits<4> opcod, string opc, PatFrag opnode> {
// shifted imm
def ri : T2sTwoRegImm<
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm), IIC_iALUi,
opc, ".w\t$Rd, $Rn, $imm",
[(set rGPR:$Rd, (opnode t2_so_imm:$imm, rGPR:$Rn))]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = opcod;
let Inst{15} = 0;
}
// register
def rr : T2sThreeReg<
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iALUr,
opc, "\t$Rd, $Rn, $Rm",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
let Inst{14-12} = 0b000; // imm3
let Inst{7-6} = 0b00; // imm2
let Inst{5-4} = 0b00; // type
}
// shifted register
def rs : T2sTwoRegShiftedReg<
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm),
IIC_iALUsir, opc, "\t$Rd, $Rn, $ShiftedRm",
[(set rGPR:$Rd, (opnode t2_so_reg:$ShiftedRm, rGPR:$Rn))]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
}
}
/// T2I_bin_s_irs - Similar to T2I_bin_irs except it sets the 's' bit so the
/// instruction modifies the CPSR register.
///
/// These opcodes will be converted to the real non-S opcodes by
/// AdjustInstrPostInstrSelection after giving then an optional CPSR operand.
let hasPostISelHook = 1, Defs = [CPSR] in {
multiclass T2I_bin_s_irs<InstrItinClass iii, InstrItinClass iir,
InstrItinClass iis, PatFrag opnode,
bit Commutable = 0> {
// shifted imm
def ri : t2PseudoInst<(outs rGPR:$Rd),
(ins GPRnopc:$Rn, t2_so_imm:$imm, pred:$p),
4, iii,
[(set rGPR:$Rd, CPSR, (opnode GPRnopc:$Rn,
t2_so_imm:$imm))]>;
// register
def rr : t2PseudoInst<(outs rGPR:$Rd), (ins GPRnopc:$Rn, rGPR:$Rm, pred:$p),
4, iir,
[(set rGPR:$Rd, CPSR, (opnode GPRnopc:$Rn,
rGPR:$Rm))]> {
let isCommutable = Commutable;
}
// shifted register
def rs : t2PseudoInst<(outs rGPR:$Rd),
(ins GPRnopc:$Rn, t2_so_reg:$ShiftedRm, pred:$p),
4, iis,
[(set rGPR:$Rd, CPSR, (opnode GPRnopc:$Rn,
t2_so_reg:$ShiftedRm))]>;
}
}
/// T2I_rbin_s_is - Same as T2I_bin_s_irs, except selection DAG
/// operands are reversed.
let hasPostISelHook = 1, Defs = [CPSR] in {
multiclass T2I_rbin_s_is<PatFrag opnode> {
// shifted imm
def ri : t2PseudoInst<(outs rGPR:$Rd),
(ins GPRnopc:$Rn, t2_so_imm:$imm, pred:$p),
4, IIC_iALUi,
[(set rGPR:$Rd, CPSR, (opnode t2_so_imm:$imm,
GPRnopc:$Rn))]>;
// shifted register
def rs : t2PseudoInst<(outs rGPR:$Rd),
(ins GPRnopc:$Rn, t2_so_reg:$ShiftedRm, pred:$p),
4, IIC_iALUsi,
[(set rGPR:$Rd, CPSR, (opnode t2_so_reg:$ShiftedRm,
GPRnopc:$Rn))]>;
}
}
/// T2I_bin_ii12rs - Defines a set of (op reg, {so_imm|imm0_4095|r|so_reg})
/// patterns for a binary operation that produces a value.
multiclass T2I_bin_ii12rs<bits<3> op23_21, string opc, PatFrag opnode,
bit Commutable = 0> {
// shifted imm
// The register-immediate version is re-materializable. This is useful
// in particular for taking the address of a local.
let isReMaterializable = 1 in {
def ri : T2sTwoRegImm<
(outs GPRnopc:$Rd), (ins GPRnopc:$Rn, t2_so_imm:$imm), IIC_iALUi,
opc, ".w\t$Rd, $Rn, $imm",
[(set GPRnopc:$Rd, (opnode GPRnopc:$Rn, t2_so_imm:$imm))]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24} = 1;
let Inst{23-21} = op23_21;
let Inst{15} = 0;
}
}
// 12-bit imm
def ri12 : T2I<
(outs GPRnopc:$Rd), (ins GPR:$Rn, imm0_4095:$imm), IIC_iALUi,
!strconcat(opc, "w"), "\t$Rd, $Rn, $imm",
[(set GPRnopc:$Rd, (opnode GPR:$Rn, imm0_4095:$imm))]> {
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{31-27} = 0b11110;
let Inst{26} = imm{11};
let Inst{25-24} = 0b10;
let Inst{23-21} = op23_21;
let Inst{20} = 0; // The S bit.
let Inst{19-16} = Rn;
let Inst{15} = 0;
let Inst{14-12} = imm{10-8};
let Inst{11-8} = Rd;
let Inst{7-0} = imm{7-0};
}
// register
def rr : T2sThreeReg<(outs GPRnopc:$Rd), (ins GPRnopc:$Rn, rGPR:$Rm),
IIC_iALUr, opc, ".w\t$Rd, $Rn, $Rm",
[(set GPRnopc:$Rd, (opnode GPRnopc:$Rn, rGPR:$Rm))]> {
let isCommutable = Commutable;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24} = 1;
let Inst{23-21} = op23_21;
let Inst{14-12} = 0b000; // imm3
let Inst{7-6} = 0b00; // imm2
let Inst{5-4} = 0b00; // type
}
// shifted register
def rs : T2sTwoRegShiftedReg<
(outs GPRnopc:$Rd), (ins GPRnopc:$Rn, t2_so_reg:$ShiftedRm),
IIC_iALUsi, opc, ".w\t$Rd, $Rn, $ShiftedRm",
[(set GPRnopc:$Rd, (opnode GPRnopc:$Rn, t2_so_reg:$ShiftedRm))]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24} = 1;
let Inst{23-21} = op23_21;
}
}
/// T2I_adde_sube_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns
/// for a binary operation that produces a value and use the carry
/// bit. It's not predicable.
let Defs = [CPSR], Uses = [CPSR] in {
multiclass T2I_adde_sube_irs<bits<4> opcod, string opc, PatFrag opnode,
bit Commutable = 0> {
// shifted imm
def ri : T2sTwoRegImm<(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_imm:$imm),
IIC_iALUi, opc, "\t$Rd, $Rn, $imm",
[(set rGPR:$Rd, CPSR, (opnode rGPR:$Rn, t2_so_imm:$imm, CPSR))]>,
Requires<[IsThumb2]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = opcod;
let Inst{15} = 0;
}
// register
def rr : T2sThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iALUr,
opc, ".w\t$Rd, $Rn, $Rm",
[(set rGPR:$Rd, CPSR, (opnode rGPR:$Rn, rGPR:$Rm, CPSR))]>,
Requires<[IsThumb2]> {
let isCommutable = Commutable;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
let Inst{14-12} = 0b000; // imm3
let Inst{7-6} = 0b00; // imm2
let Inst{5-4} = 0b00; // type
}
// shifted register
def rs : T2sTwoRegShiftedReg<
(outs rGPR:$Rd), (ins rGPR:$Rn, t2_so_reg:$ShiftedRm),
IIC_iALUsi, opc, ".w\t$Rd, $Rn, $ShiftedRm",
[(set rGPR:$Rd, CPSR, (opnode rGPR:$Rn, t2_so_reg:$ShiftedRm, CPSR))]>,
Requires<[IsThumb2]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
}
}
}
/// T2I_sh_ir - Defines a set of (op reg, {so_imm|r}) patterns for a shift /
// rotate operation that produces a value.
multiclass T2I_sh_ir<bits<2> opcod, string opc, Operand ty, PatFrag opnode,
string baseOpc> {
// 5-bit imm
def ri : T2sTwoRegShiftImm<
(outs rGPR:$Rd), (ins rGPR:$Rm, ty:$imm), IIC_iMOVsi,
opc, ".w\t$Rd, $Rm, $imm",
[(set rGPR:$Rd, (opnode rGPR:$Rm, (i32 ty:$imm)))]> {
let Inst{31-27} = 0b11101;
let Inst{26-21} = 0b010010;
let Inst{19-16} = 0b1111; // Rn
let Inst{5-4} = opcod;
}
// register
def rr : T2sThreeReg<
(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm), IIC_iMOVsr,
opc, ".w\t$Rd, $Rn, $Rm",
[(set rGPR:$Rd, (opnode rGPR:$Rn, rGPR:$Rm))]> {
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0100;
let Inst{22-21} = opcod;
let Inst{15-12} = 0b1111;
let Inst{7-4} = 0b0000;
}
// Optional destination register
def : t2InstAlias<!strconcat(opc, "${s}${p}", ".w $Rdn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) rGPR:$Rdn, rGPR:$Rdn,
ty:$imm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", ".w $Rdn, $Rm"),
(!cast<Instruction>(!strconcat(baseOpc, "rr")) rGPR:$Rdn, rGPR:$Rdn,
rGPR:$Rm, pred:$p,
cc_out:$s)>;
// Assembler aliases w/o the ".w" suffix.
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rd, $Rn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) rGPR:$Rd, rGPR:$Rn,
ty:$imm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rd, $Rn, $Rm"),
(!cast<Instruction>(!strconcat(baseOpc, "rr")) rGPR:$Rd, rGPR:$Rn,
rGPR:$Rm, pred:$p,
cc_out:$s)>;
// and with the optional destination operand, too.
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rdn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) rGPR:$Rdn, rGPR:$Rdn,
ty:$imm, pred:$p,
cc_out:$s)>;
def : t2InstAlias<!strconcat(opc, "${s}${p}", " $Rdn, $Rm"),
(!cast<Instruction>(!strconcat(baseOpc, "rr")) rGPR:$Rdn, rGPR:$Rdn,
rGPR:$Rm, pred:$p,
cc_out:$s)>;
}
/// T2I_cmp_irs - Defines a set of (op r, {so_imm|r|so_reg}) cmp / test
/// patterns. Similar to T2I_bin_irs except the instruction does not produce
/// a explicit result, only implicitly set CPSR.
multiclass T2I_cmp_irs<bits<4> opcod, string opc,
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
PatFrag opnode, string baseOpc> {
let isCompare = 1, Defs = [CPSR] in {
// shifted imm
def ri : T2OneRegCmpImm<
(outs), (ins GPRnopc:$Rn, t2_so_imm:$imm), iii,
opc, ".w\t$Rn, $imm",
[(opnode GPRnopc:$Rn, t2_so_imm:$imm)]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = opcod;
let Inst{20} = 1; // The S bit.
let Inst{15} = 0;
let Inst{11-8} = 0b1111; // Rd
}
// register
def rr : T2TwoRegCmp<
(outs), (ins GPRnopc:$Rn, rGPR:$Rm), iir,
opc, ".w\t$Rn, $Rm",
[(opnode GPRnopc:$Rn, rGPR:$Rm)]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
let Inst{20} = 1; // The S bit.
let Inst{14-12} = 0b000; // imm3
let Inst{11-8} = 0b1111; // Rd
let Inst{7-6} = 0b00; // imm2
let Inst{5-4} = 0b00; // type
}
// shifted register
def rs : T2OneRegCmpShiftedReg<
(outs), (ins GPRnopc:$Rn, t2_so_reg:$ShiftedRm), iis,
opc, ".w\t$Rn, $ShiftedRm",
[(opnode GPRnopc:$Rn, t2_so_reg:$ShiftedRm)]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = opcod;
let Inst{20} = 1; // The S bit.
let Inst{11-8} = 0b1111; // Rd
}
}
// Assembler aliases w/o the ".w" suffix.
// No alias here for 'rr' version as not all instantiations of this
// multiclass want one (CMP in particular, does not).
def : t2InstAlias<!strconcat(opc, "${p}", " $Rn, $imm"),
(!cast<Instruction>(!strconcat(baseOpc, "ri")) GPRnopc:$Rn,
t2_so_imm:$imm, pred:$p)>;
def : t2InstAlias<!strconcat(opc, "${p}", " $Rn, $shift"),
(!cast<Instruction>(!strconcat(baseOpc, "rs")) GPRnopc:$Rn,
t2_so_reg:$shift,
pred:$p)>;
}
/// T2I_ld - Defines a set of (op r, {imm12|imm8|so_reg}) load patterns.
multiclass T2I_ld<bit signed, bits<2> opcod, string opc,
InstrItinClass iii, InstrItinClass iis, RegisterClass target,
PatFrag opnode> {
def i12 : T2Ii12<(outs target:$Rt), (ins t2addrmode_imm12:$addr), iii,
opc, ".w\t$Rt, $addr",
[(set target:$Rt, (opnode t2addrmode_imm12:$addr))]> {
bits<4> Rt;
bits<17> addr;
let Inst{31-25} = 0b1111100;
let Inst{24} = signed;
let Inst{23} = 1;
let Inst{22-21} = opcod;
let Inst{20} = 1; // load
let Inst{19-16} = addr{16-13}; // Rn
let Inst{15-12} = Rt;
let Inst{11-0} = addr{11-0}; // imm
}
def i8 : T2Ii8 <(outs target:$Rt), (ins t2addrmode_negimm8:$addr), iii,
opc, "\t$Rt, $addr",
[(set target:$Rt, (opnode t2addrmode_negimm8:$addr))]> {
bits<4> Rt;
bits<13> addr;
let Inst{31-27} = 0b11111;
let Inst{26-25} = 0b00;
let Inst{24} = signed;
let Inst{23} = 0;
let Inst{22-21} = opcod;
let Inst{20} = 1; // load
let Inst{19-16} = addr{12-9}; // Rn
let Inst{15-12} = Rt;
let Inst{11} = 1;
// Offset: index==TRUE, wback==FALSE
let Inst{10} = 1; // The P bit.
let Inst{9} = addr{8}; // U
let Inst{8} = 0; // The W bit.
let Inst{7-0} = addr{7-0}; // imm
}
def s : T2Iso <(outs target:$Rt), (ins t2addrmode_so_reg:$addr), iis,
opc, ".w\t$Rt, $addr",
[(set target:$Rt, (opnode t2addrmode_so_reg:$addr))]> {
let Inst{31-27} = 0b11111;
let Inst{26-25} = 0b00;
let Inst{24} = signed;
let Inst{23} = 0;
let Inst{22-21} = opcod;
let Inst{20} = 1; // load
let Inst{11-6} = 0b000000;
bits<4> Rt;
let Inst{15-12} = Rt;
bits<10> addr;
let Inst{19-16} = addr{9-6}; // Rn
let Inst{3-0} = addr{5-2}; // Rm
let Inst{5-4} = addr{1-0}; // imm
let DecoderMethod = "DecodeT2LoadShift";
}
// pci variant is very similar to i12, but supports negative offsets
// from the PC.
def pci : T2Ipc <(outs target:$Rt), (ins t2ldrlabel:$addr), iii,
opc, ".w\t$Rt, $addr",
[(set target:$Rt, (opnode (ARMWrapper tconstpool:$addr)))]> {
let isReMaterializable = 1;
let Inst{31-27} = 0b11111;
let Inst{26-25} = 0b00;
let Inst{24} = signed;
let Inst{23} = ?; // add = (U == '1')
let Inst{22-21} = opcod;
let Inst{20} = 1; // load
let Inst{19-16} = 0b1111; // Rn
bits<4> Rt;
bits<12> addr;
let Inst{15-12} = Rt{3-0};
let Inst{11-0} = addr{11-0};
}
}
/// T2I_st - Defines a set of (op r, {imm12|imm8|so_reg}) store patterns.
multiclass T2I_st<bits<2> opcod, string opc,
InstrItinClass iii, InstrItinClass iis, RegisterClass target,
PatFrag opnode> {
def i12 : T2Ii12<(outs), (ins target:$Rt, t2addrmode_imm12:$addr), iii,
opc, ".w\t$Rt, $addr",
[(opnode target:$Rt, t2addrmode_imm12:$addr)]> {
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0001;
let Inst{22-21} = opcod;
let Inst{20} = 0; // !load
bits<4> Rt;
let Inst{15-12} = Rt;
bits<17> addr;
let addr{12} = 1; // add = TRUE
let Inst{19-16} = addr{16-13}; // Rn
let Inst{23} = addr{12}; // U
let Inst{11-0} = addr{11-0}; // imm
}
def i8 : T2Ii8 <(outs), (ins target:$Rt, t2addrmode_negimm8:$addr), iii,
opc, "\t$Rt, $addr",
[(opnode target:$Rt, t2addrmode_negimm8:$addr)]> {
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0000;
let Inst{22-21} = opcod;
let Inst{20} = 0; // !load
let Inst{11} = 1;
// Offset: index==TRUE, wback==FALSE
let Inst{10} = 1; // The P bit.
let Inst{8} = 0; // The W bit.
bits<4> Rt;
let Inst{15-12} = Rt;
bits<13> addr;
let Inst{19-16} = addr{12-9}; // Rn
let Inst{9} = addr{8}; // U
let Inst{7-0} = addr{7-0}; // imm
}
def s : T2Iso <(outs), (ins target:$Rt, t2addrmode_so_reg:$addr), iis,
opc, ".w\t$Rt, $addr",
[(opnode target:$Rt, t2addrmode_so_reg:$addr)]> {
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0000;
let Inst{22-21} = opcod;
let Inst{20} = 0; // !load
let Inst{11-6} = 0b000000;
bits<4> Rt;
let Inst{15-12} = Rt;
bits<10> addr;
let Inst{19-16} = addr{9-6}; // Rn
let Inst{3-0} = addr{5-2}; // Rm
let Inst{5-4} = addr{1-0}; // imm
}
}
/// T2I_ext_rrot - A unary operation with two forms: one whose operand is a
/// register and one whose operand is a register rotated by 8/16/24.
class T2I_ext_rrot<bits<3> opcod, string opc, PatFrag opnode>
: T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm, rot_imm:$rot), IIC_iEXTr,
opc, ".w\t$Rd, $Rm$rot",
[(set rGPR:$Rd, (opnode (rotr rGPR:$Rm, rot_imm:$rot)))]>,
Requires<[IsThumb2]> {
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0100;
let Inst{22-20} = opcod;
let Inst{19-16} = 0b1111; // Rn
let Inst{15-12} = 0b1111;
let Inst{7} = 1;
bits<2> rot;
let Inst{5-4} = rot{1-0}; // rotate
}
// UXTB16 - Requres T2ExtractPack, does not need the .w qualifier.
class T2I_ext_rrot_uxtb16<bits<3> opcod, string opc, PatFrag opnode>
: T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm, rot_imm:$rot),
IIC_iEXTr, opc, "\t$Rd, $Rm$rot",
[(set rGPR:$Rd, (opnode (rotr rGPR:$Rm, rot_imm:$rot)))]>,
Requires<[HasT2ExtractPack, IsThumb2]> {
bits<2> rot;
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0100;
let Inst{22-20} = opcod;
let Inst{19-16} = 0b1111; // Rn
let Inst{15-12} = 0b1111;
let Inst{7} = 1;
let Inst{5-4} = rot;
}
// SXTB16 - Requres T2ExtractPack, does not need the .w qualifier, no pattern
// supported yet.
class T2I_ext_rrot_sxtb16<bits<3> opcod, string opc>
: T2TwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm, rot_imm:$rot), IIC_iEXTr,
opc, "\t$Rd, $Rm$rot", []>,
Requires<[IsThumb2, HasT2ExtractPack]> {
bits<2> rot;
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0100;
let Inst{22-20} = opcod;
let Inst{19-16} = 0b1111; // Rn
let Inst{15-12} = 0b1111;
let Inst{7} = 1;
let Inst{5-4} = rot;
}
/// T2I_exta_rrot - A binary operation with two forms: one whose operand is a
/// register and one whose operand is a register rotated by 8/16/24.
class T2I_exta_rrot<bits<3> opcod, string opc, PatFrag opnode>
: T2ThreeReg<(outs rGPR:$Rd),
(ins rGPR:$Rn, rGPR:$Rm, rot_imm:$rot),
IIC_iEXTAsr, opc, "\t$Rd, $Rn, $Rm$rot",
[(set rGPR:$Rd, (opnode rGPR:$Rn, (rotr rGPR:$Rm,rot_imm:$rot)))]>,
Requires<[HasT2ExtractPack, IsThumb2]> {
bits<2> rot;
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0100;
let Inst{22-20} = opcod;
let Inst{15-12} = 0b1111;
let Inst{7} = 1;
let Inst{5-4} = rot;
}
class T2I_exta_rrot_np<bits<3> opcod, string opc>
: T2ThreeReg<(outs rGPR:$Rd), (ins rGPR:$Rn, rGPR:$Rm,rot_imm:$rot),
IIC_iEXTAsr, opc, "\t$Rd, $Rn, $Rm$rot", []> {
bits<2> rot;
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0100;
let Inst{22-20} = opcod;
let Inst{15-12} = 0b1111;
let Inst{7} = 1;
let Inst{5-4} = rot;
}
//===----------------------------------------------------------------------===//
// Instructions
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// Miscellaneous Instructions.
//
class T2PCOneRegImm<dag oops, dag iops, InstrItinClass itin,
string asm, list<dag> pattern>
: T2XI<oops, iops, itin, asm, pattern> {
bits<4> Rd;
bits<12> label;
let Inst{11-8} = Rd;
let Inst{26} = label{11};
let Inst{14-12} = label{10-8};
let Inst{7-0} = label{7-0};
}
// LEApcrel - Load a pc-relative address into a register without offending the
// assembler.
def t2ADR : T2PCOneRegImm<(outs rGPR:$Rd),
(ins t2adrlabel:$addr, pred:$p),
IIC_iALUi, "adr{$p}.w\t$Rd, $addr", []> {
let Inst{31-27} = 0b11110;
let Inst{25-24} = 0b10;
// Inst{23:21} = '11' (add = FALSE) or '00' (add = TRUE)
let Inst{22} = 0;
let Inst{20} = 0;
let Inst{19-16} = 0b1111; // Rn
let Inst{15} = 0;
bits<4> Rd;
bits<13> addr;
let Inst{11-8} = Rd;
let Inst{23} = addr{12};
let Inst{21} = addr{12};
let Inst{26} = addr{11};
let Inst{14-12} = addr{10-8};
let Inst{7-0} = addr{7-0};
let DecoderMethod = "DecodeT2Adr";
}
let neverHasSideEffects = 1, isReMaterializable = 1 in
def t2LEApcrel : t2PseudoInst<(outs rGPR:$Rd), (ins i32imm:$label, pred:$p),
4, IIC_iALUi, []>;
def t2LEApcrelJT : t2PseudoInst<(outs rGPR:$Rd),
(ins i32imm:$label, nohash_imm:$id, pred:$p),
4, IIC_iALUi,
[]>;
//===----------------------------------------------------------------------===//
// Load / store Instructions.
//
// Load
let canFoldAsLoad = 1, isReMaterializable = 1 in
defm t2LDR : T2I_ld<0, 0b10, "ldr", IIC_iLoad_i, IIC_iLoad_si, GPR,
UnOpFrag<(load node:$Src)>>;
// Loads with zero extension
defm t2LDRH : T2I_ld<0, 0b01, "ldrh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
rGPR, UnOpFrag<(zextloadi16 node:$Src)>>;
defm t2LDRB : T2I_ld<0, 0b00, "ldrb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
rGPR, UnOpFrag<(zextloadi8 node:$Src)>>;
// Loads with sign extension
defm t2LDRSH : T2I_ld<1, 0b01, "ldrsh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
rGPR, UnOpFrag<(sextloadi16 node:$Src)>>;
defm t2LDRSB : T2I_ld<1, 0b00, "ldrsb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
rGPR, UnOpFrag<(sextloadi8 node:$Src)>>;
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1 in {
// Load doubleword
def t2LDRDi8 : T2Ii8s4<1, 0, 1, (outs rGPR:$Rt, rGPR:$Rt2),
(ins t2addrmode_imm8s4:$addr),
IIC_iLoad_d_i, "ldrd", "\t$Rt, $Rt2, $addr", "", []>;
} // mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1
// zextload i1 -> zextload i8
def : T2Pat<(zextloadi1 t2addrmode_imm12:$addr),
(t2LDRBi12 t2addrmode_imm12:$addr)>;
def : T2Pat<(zextloadi1 t2addrmode_negimm8:$addr),
(t2LDRBi8 t2addrmode_negimm8:$addr)>;
def : T2Pat<(zextloadi1 t2addrmode_so_reg:$addr),
(t2LDRBs t2addrmode_so_reg:$addr)>;
def : T2Pat<(zextloadi1 (ARMWrapper tconstpool:$addr)),
(t2LDRBpci tconstpool:$addr)>;
// extload -> zextload
// FIXME: Reduce the number of patterns by legalizing extload to zextload
// earlier?
def : T2Pat<(extloadi1 t2addrmode_imm12:$addr),
(t2LDRBi12 t2addrmode_imm12:$addr)>;
def : T2Pat<(extloadi1 t2addrmode_negimm8:$addr),
(t2LDRBi8 t2addrmode_negimm8:$addr)>;
def : T2Pat<(extloadi1 t2addrmode_so_reg:$addr),
(t2LDRBs t2addrmode_so_reg:$addr)>;
def : T2Pat<(extloadi1 (ARMWrapper tconstpool:$addr)),
(t2LDRBpci tconstpool:$addr)>;
def : T2Pat<(extloadi8 t2addrmode_imm12:$addr),
(t2LDRBi12 t2addrmode_imm12:$addr)>;
def : T2Pat<(extloadi8 t2addrmode_negimm8:$addr),
(t2LDRBi8 t2addrmode_negimm8:$addr)>;
def : T2Pat<(extloadi8 t2addrmode_so_reg:$addr),
(t2LDRBs t2addrmode_so_reg:$addr)>;
def : T2Pat<(extloadi8 (ARMWrapper tconstpool:$addr)),
(t2LDRBpci tconstpool:$addr)>;
def : T2Pat<(extloadi16 t2addrmode_imm12:$addr),
(t2LDRHi12 t2addrmode_imm12:$addr)>;
def : T2Pat<(extloadi16 t2addrmode_negimm8:$addr),
(t2LDRHi8 t2addrmode_negimm8:$addr)>;
def : T2Pat<(extloadi16 t2addrmode_so_reg:$addr),
(t2LDRHs t2addrmode_so_reg:$addr)>;
def : T2Pat<(extloadi16 (ARMWrapper tconstpool:$addr)),
(t2LDRHpci tconstpool:$addr)>;
// FIXME: The destination register of the loads and stores can't be PC, but
// can be SP. We need another regclass (similar to rGPR) to represent
// that. Not a pressing issue since these are selected manually,
// not via pattern.
// Indexed loads
let mayLoad = 1, neverHasSideEffects = 1 in {
def t2LDR_PRE : T2Ipreldst<0, 0b10, 1, 1, (outs GPR:$Rt, GPR:$Rn_wb),
(ins t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iLoad_iu,
"ldr", "\t$Rt, $addr!", "$addr.base = $Rn_wb",
[]> {
let AsmMatchConverter = "cvtLdWriteBackRegT2AddrModeImm8";
}
def t2LDR_POST : T2Ipostldst<0, 0b10, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
(ins addr_offset_none:$Rn, t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iLoad_iu,
"ldr", "\t$Rt, $Rn$offset", "$Rn = $Rn_wb", []>;
def t2LDRB_PRE : T2Ipreldst<0, 0b00, 1, 1, (outs GPR:$Rt, GPR:$Rn_wb),
(ins t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
"ldrb", "\t$Rt, $addr!", "$addr.base = $Rn_wb",
[]> {
let AsmMatchConverter = "cvtLdWriteBackRegT2AddrModeImm8";
}
def t2LDRB_POST : T2Ipostldst<0, 0b00, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
(ins addr_offset_none:$Rn, t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
"ldrb", "\t$Rt, $Rn$offset", "$Rn = $Rn_wb", []>;
def t2LDRH_PRE : T2Ipreldst<0, 0b01, 1, 1, (outs GPR:$Rt, GPR:$Rn_wb),
(ins t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
"ldrh", "\t$Rt, $addr!", "$addr.base = $Rn_wb",
[]> {
let AsmMatchConverter = "cvtLdWriteBackRegT2AddrModeImm8";
}
def t2LDRH_POST : T2Ipostldst<0, 0b01, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
(ins addr_offset_none:$Rn, t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
"ldrh", "\t$Rt, $Rn$offset", "$Rn = $Rn_wb", []>;
def t2LDRSB_PRE : T2Ipreldst<1, 0b00, 1, 1, (outs GPR:$Rt, GPR:$Rn_wb),
(ins t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
"ldrsb", "\t$Rt, $addr!", "$addr.base = $Rn_wb",
[]> {
let AsmMatchConverter = "cvtLdWriteBackRegT2AddrModeImm8";
}
def t2LDRSB_POST : T2Ipostldst<1, 0b00, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
(ins addr_offset_none:$Rn, t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
"ldrsb", "\t$Rt, $Rn$offset", "$Rn = $Rn_wb", []>;
def t2LDRSH_PRE : T2Ipreldst<1, 0b01, 1, 1, (outs GPR:$Rt, GPR:$Rn_wb),
(ins t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iLoad_bh_iu,
"ldrsh", "\t$Rt, $addr!", "$addr.base = $Rn_wb",
[]> {
let AsmMatchConverter = "cvtLdWriteBackRegT2AddrModeImm8";
}
def t2LDRSH_POST : T2Ipostldst<1, 0b01, 1, 0, (outs GPR:$Rt, GPR:$Rn_wb),
(ins addr_offset_none:$Rn, t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iLoad_bh_iu,
"ldrsh", "\t$Rt, $Rn$offset", "$Rn = $Rn_wb", []>;
} // mayLoad = 1, neverHasSideEffects = 1
// LDRT, LDRBT, LDRHT, LDRSBT, LDRSHT all have offset mode (PUW=0b110).
// Ref: A8.6.57 LDR (immediate, Thumb) Encoding T4
class T2IldT<bit signed, bits<2> type, string opc, InstrItinClass ii>
: T2Ii8<(outs rGPR:$Rt), (ins t2addrmode_posimm8:$addr), ii, opc,
"\t$Rt, $addr", []> {
bits<4> Rt;
bits<13> addr;
let Inst{31-27} = 0b11111;
let Inst{26-25} = 0b00;
let Inst{24} = signed;
let Inst{23} = 0;
let Inst{22-21} = type;
let Inst{20} = 1; // load
let Inst{19-16} = addr{12-9};
let Inst{15-12} = Rt;
let Inst{11} = 1;
let Inst{10-8} = 0b110; // PUW.
let Inst{7-0} = addr{7-0};
}
def t2LDRT : T2IldT<0, 0b10, "ldrt", IIC_iLoad_i>;
def t2LDRBT : T2IldT<0, 0b00, "ldrbt", IIC_iLoad_bh_i>;
def t2LDRHT : T2IldT<0, 0b01, "ldrht", IIC_iLoad_bh_i>;
def t2LDRSBT : T2IldT<1, 0b00, "ldrsbt", IIC_iLoad_bh_i>;
def t2LDRSHT : T2IldT<1, 0b01, "ldrsht", IIC_iLoad_bh_i>;
// Store
defm t2STR :T2I_st<0b10,"str", IIC_iStore_i, IIC_iStore_si, GPR,
BinOpFrag<(store node:$LHS, node:$RHS)>>;
defm t2STRB:T2I_st<0b00,"strb", IIC_iStore_bh_i, IIC_iStore_bh_si,
rGPR, BinOpFrag<(truncstorei8 node:$LHS, node:$RHS)>>;
defm t2STRH:T2I_st<0b01,"strh", IIC_iStore_bh_i, IIC_iStore_bh_si,
rGPR, BinOpFrag<(truncstorei16 node:$LHS, node:$RHS)>>;
// Store doubleword
let mayStore = 1, neverHasSideEffects = 1, hasExtraSrcRegAllocReq = 1 in
def t2STRDi8 : T2Ii8s4<1, 0, 0, (outs),
(ins GPR:$Rt, GPR:$Rt2, t2addrmode_imm8s4:$addr),
IIC_iStore_d_r, "strd", "\t$Rt, $Rt2, $addr", "", []>;
// Indexed stores
let mayStore = 1, neverHasSideEffects = 1 in {
def t2STR_PRE : T2Ipreldst<0, 0b10, 0, 1, (outs GPRnopc:$Rn_wb),
(ins GPRnopc:$Rt, t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iStore_iu,
"str", "\t$Rt, $addr!",
"$addr.base = $Rn_wb,@earlyclobber $Rn_wb", []> {
let AsmMatchConverter = "cvtStWriteBackRegT2AddrModeImm8";
}
def t2STRH_PRE : T2Ipreldst<0, 0b01, 0, 1, (outs GPRnopc:$Rn_wb),
(ins rGPR:$Rt, t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iStore_iu,
"strh", "\t$Rt, $addr!",
"$addr.base = $Rn_wb,@earlyclobber $Rn_wb", []> {
let AsmMatchConverter = "cvtStWriteBackRegT2AddrModeImm8";
}
def t2STRB_PRE : T2Ipreldst<0, 0b00, 0, 1, (outs GPRnopc:$Rn_wb),
(ins rGPR:$Rt, t2addrmode_imm8:$addr),
AddrModeT2_i8, IndexModePre, IIC_iStore_bh_iu,
"strb", "\t$Rt, $addr!",
"$addr.base = $Rn_wb,@earlyclobber $Rn_wb", []> {
let AsmMatchConverter = "cvtStWriteBackRegT2AddrModeImm8";
}
} // mayStore = 1, neverHasSideEffects = 1
def t2STR_POST : T2Ipostldst<0, 0b10, 0, 0, (outs GPRnopc:$Rn_wb),
(ins GPRnopc:$Rt, addr_offset_none:$Rn,
t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iStore_iu,
"str", "\t$Rt, $Rn$offset",
"$Rn = $Rn_wb,@earlyclobber $Rn_wb",
[(set GPRnopc:$Rn_wb,
(post_store GPRnopc:$Rt, addr_offset_none:$Rn,
t2am_imm8_offset:$offset))]>;
def t2STRH_POST : T2Ipostldst<0, 0b01, 0, 0, (outs GPRnopc:$Rn_wb),
(ins rGPR:$Rt, addr_offset_none:$Rn,
t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iStore_bh_iu,
"strh", "\t$Rt, $Rn$offset",
"$Rn = $Rn_wb,@earlyclobber $Rn_wb",
[(set GPRnopc:$Rn_wb,
(post_truncsti16 rGPR:$Rt, addr_offset_none:$Rn,
t2am_imm8_offset:$offset))]>;
def t2STRB_POST : T2Ipostldst<0, 0b00, 0, 0, (outs GPRnopc:$Rn_wb),
(ins rGPR:$Rt, addr_offset_none:$Rn,
t2am_imm8_offset:$offset),
AddrModeT2_i8, IndexModePost, IIC_iStore_bh_iu,
"strb", "\t$Rt, $Rn$offset",
"$Rn = $Rn_wb,@earlyclobber $Rn_wb",
[(set GPRnopc:$Rn_wb,
(post_truncsti8 rGPR:$Rt, addr_offset_none:$Rn,
t2am_imm8_offset:$offset))]>;
// Pseudo-instructions for pattern matching the pre-indexed stores. We can't
// put the patterns on the instruction definitions directly as ISel wants
// the address base and offset to be separate operands, not a single
// complex operand like we represent the instructions themselves. The
// pseudos map between the two.
let usesCustomInserter = 1,
Constraints = "$Rn = $Rn_wb,@earlyclobber $Rn_wb" in {
def t2STR_preidx: t2PseudoInst<(outs GPRnopc:$Rn_wb),
(ins rGPR:$Rt, GPRnopc:$Rn, t2am_imm8_offset:$offset, pred:$p),
4, IIC_iStore_ru,
[(set GPRnopc:$Rn_wb,
(pre_store rGPR:$Rt, GPRnopc:$Rn, t2am_imm8_offset:$offset))]>;
def t2STRB_preidx: t2PseudoInst<(outs GPRnopc:$Rn_wb),
(ins rGPR:$Rt, GPRnopc:$Rn, t2am_imm8_offset:$offset, pred:$p),
4, IIC_iStore_ru,
[(set GPRnopc:$Rn_wb,
(pre_truncsti8 rGPR:$Rt, GPRnopc:$Rn, t2am_imm8_offset:$offset))]>;
def t2STRH_preidx: t2PseudoInst<(outs GPRnopc:$Rn_wb),
(ins rGPR:$Rt, GPRnopc:$Rn, t2am_imm8_offset:$offset, pred:$p),
4, IIC_iStore_ru,
[(set GPRnopc:$Rn_wb,
(pre_truncsti16 rGPR:$Rt, GPRnopc:$Rn, t2am_imm8_offset:$offset))]>;
}
// STRT, STRBT, STRHT all have offset mode (PUW=0b110) and are for disassembly
// only.
// Ref: A8.6.193 STR (immediate, Thumb) Encoding T4
class T2IstT<bits<2> type, string opc, InstrItinClass ii>
: T2Ii8<(outs rGPR:$Rt), (ins t2addrmode_imm8:$addr), ii, opc,
"\t$Rt, $addr", []> {
let Inst{31-27} = 0b11111;
let Inst{26-25} = 0b00;
let Inst{24} = 0; // not signed
let Inst{23} = 0;
let Inst{22-21} = type;
let Inst{20} = 0; // store
let Inst{11} = 1;
let Inst{10-8} = 0b110; // PUW
bits<4> Rt;
bits<13> addr;
let Inst{15-12} = Rt;
let Inst{19-16} = addr{12-9};
let Inst{7-0} = addr{7-0};
}
def t2STRT : T2IstT<0b10, "strt", IIC_iStore_i>;
def t2STRBT : T2IstT<0b00, "strbt", IIC_iStore_bh_i>;
def t2STRHT : T2IstT<0b01, "strht", IIC_iStore_bh_i>;
// ldrd / strd pre / post variants
// For disassembly only.
def t2LDRD_PRE : T2Ii8s4<1, 1, 1, (outs rGPR:$Rt, rGPR:$Rt2, GPR:$wb),
(ins t2addrmode_imm8s4:$addr), IIC_iLoad_d_ru,
"ldrd", "\t$Rt, $Rt2, $addr!", "$addr.base = $wb", []> {
let AsmMatchConverter = "cvtT2LdrdPre";
let DecoderMethod = "DecodeT2LDRDPreInstruction";
}
def t2LDRD_POST : T2Ii8s4post<0, 1, 1, (outs rGPR:$Rt, rGPR:$Rt2, GPR:$wb),
(ins addr_offset_none:$addr, t2am_imm8s4_offset:$imm),
IIC_iLoad_d_ru, "ldrd", "\t$Rt, $Rt2, $addr$imm",
"$addr.base = $wb", []>;
def t2STRD_PRE : T2Ii8s4<1, 1, 0, (outs GPR:$wb),
(ins rGPR:$Rt, rGPR:$Rt2, t2addrmode_imm8s4:$addr),
IIC_iStore_d_ru, "strd", "\t$Rt, $Rt2, $addr!",
"$addr.base = $wb", []> {
let AsmMatchConverter = "cvtT2StrdPre";
let DecoderMethod = "DecodeT2STRDPreInstruction";
}
def t2STRD_POST : T2Ii8s4post<0, 1, 0, (outs GPR:$wb),
(ins rGPR:$Rt, rGPR:$Rt2, addr_offset_none:$addr,
t2am_imm8s4_offset:$imm),
IIC_iStore_d_ru, "strd", "\t$Rt, $Rt2, $addr$imm",
"$addr.base = $wb", []>;
// T2Ipl (Preload Data/Instruction) signals the memory system of possible future
// data/instruction access.
// instr_write is inverted for Thumb mode: (prefetch 3) -> (preload 0),
// (prefetch 1) -> (preload 2), (prefetch 2) -> (preload 1).
multiclass T2Ipl<bits<1> write, bits<1> instr, string opc> {
def i12 : T2Ii12<(outs), (ins t2addrmode_imm12:$addr), IIC_Preload, opc,
"\t$addr",
[(ARMPreload t2addrmode_imm12:$addr, (i32 write), (i32 instr))]> {
let Inst{31-25} = 0b1111100;
let Inst{24} = instr;
let Inst{22} = 0;
let Inst{21} = write;
let Inst{20} = 1;
let Inst{15-12} = 0b1111;
bits<17> addr;
let addr{12} = 1; // add = TRUE
let Inst{19-16} = addr{16-13}; // Rn
let Inst{23} = addr{12}; // U
let Inst{11-0} = addr{11-0}; // imm12
}
def i8 : T2Ii8<(outs), (ins t2addrmode_negimm8:$addr), IIC_Preload, opc,
"\t$addr",
[(ARMPreload t2addrmode_negimm8:$addr, (i32 write), (i32 instr))]> {
let Inst{31-25} = 0b1111100;
let Inst{24} = instr;
let Inst{23} = 0; // U = 0
let Inst{22} = 0;
let Inst{21} = write;
let Inst{20} = 1;
let Inst{15-12} = 0b1111;
let Inst{11-8} = 0b1100;
bits<13> addr;
let Inst{19-16} = addr{12-9}; // Rn
let Inst{7-0} = addr{7-0}; // imm8
}
def s : T2Iso<(outs), (ins t2addrmode_so_reg:$addr), IIC_Preload, opc,
"\t$addr",
[(ARMPreload t2addrmode_so_reg:$addr, (i32 write), (i32 instr))]> {
let Inst{31-25} = 0b1111100;
let Inst{24} = instr;
let Inst{23} = 0; // add = TRUE for T1
let Inst{22} = 0;
let Inst{21} = write;
let Inst{20} = 1;
let Inst{15-12} = 0b1111;
let Inst{11-6} = 0000000;
bits<10> addr;
let Inst{19-16} = addr{9-6}; // Rn
let Inst{3-0} = addr{5-2}; // Rm
let Inst{5-4} = addr{1-0}; // imm2
let DecoderMethod = "DecodeT2LoadShift";
}
// FIXME: We should have a separate 'pci' variant here. As-is we represent
// it via the i12 variant, which it's related to, but that means we can
// represent negative immediates, which aren't legal for anything except
// the 'pci' case (Rn == 15).
}
defm t2PLD : T2Ipl<0, 0, "pld">, Requires<[IsThumb2]>;
defm t2PLDW : T2Ipl<1, 0, "pldw">, Requires<[IsThumb2,HasV7,HasMP]>;
defm t2PLI : T2Ipl<0, 1, "pli">, Requires<[IsThumb2,HasV7]>;
//===----------------------------------------------------------------------===//
// Load / store multiple Instructions.
//
multiclass thumb2_ld_mult<string asm, InstrItinClass itin,
InstrItinClass itin_upd, bit L_bit> {
def IA :
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin, !strconcat(asm, "${p}.w\t$Rn, $regs"), []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b01; // Increment After
let Inst{22} = 0;
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
def IA_UPD :
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin_upd, !strconcat(asm, "${p}.w\t$Rn!, $regs"), "$Rn = $wb", []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b01; // Increment After
let Inst{22} = 0;
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
def DB :
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin, !strconcat(asm, "db${p}\t$Rn, $regs"), []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b10; // Decrement Before
let Inst{22} = 0;
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
def DB_UPD :
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin_upd, !strconcat(asm, "db${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b10; // Decrement Before
let Inst{22} = 0;
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15-0} = regs;
}
}
let neverHasSideEffects = 1 in {
let mayLoad = 1, hasExtraDefRegAllocReq = 1 in
defm t2LDM : thumb2_ld_mult<"ldm", IIC_iLoad_m, IIC_iLoad_mu, 1>;
multiclass thumb2_st_mult<string asm, InstrItinClass itin,
InstrItinClass itin_upd, bit L_bit> {
def IA :
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin, !strconcat(asm, "${p}.w\t$Rn, $regs"), []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b01; // Increment After
let Inst{22} = 0;
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15} = 0;
let Inst{14} = regs{14};
let Inst{13} = 0;
let Inst{12-0} = regs{12-0};
}
def IA_UPD :
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin_upd, !strconcat(asm, "${p}.w\t$Rn!, $regs"), "$Rn = $wb", []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b01; // Increment After
let Inst{22} = 0;
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15} = 0;
let Inst{14} = regs{14};
let Inst{13} = 0;
let Inst{12-0} = regs{12-0};
}
def DB :
T2XI<(outs), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin, !strconcat(asm, "db${p}\t$Rn, $regs"), []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b10; // Decrement Before
let Inst{22} = 0;
let Inst{21} = 0; // No writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15} = 0;
let Inst{14} = regs{14};
let Inst{13} = 0;
let Inst{12-0} = regs{12-0};
}
def DB_UPD :
T2XIt<(outs GPR:$wb), (ins GPR:$Rn, pred:$p, reglist:$regs, variable_ops),
itin_upd, !strconcat(asm, "db${p}\t$Rn!, $regs"), "$Rn = $wb", []> {
bits<4> Rn;
bits<16> regs;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b00;
let Inst{24-23} = 0b10; // Decrement Before
let Inst{22} = 0;
let Inst{21} = 1; // Writeback
let Inst{20} = L_bit;
let Inst{19-16} = Rn;
let Inst{15} = 0;
let Inst{14} = regs{14};
let Inst{13} = 0;
let Inst{12-0} = regs{12-0};
}
}
let mayStore = 1, hasExtraSrcRegAllocReq = 1 in
defm t2STM : thumb2_st_mult<"stm", IIC_iStore_m, IIC_iStore_mu, 0>;
} // neverHasSideEffects
//===----------------------------------------------------------------------===//
// Move Instructions.
//
let neverHasSideEffects = 1 in
def t2MOVr : T2sTwoReg<(outs GPRnopc:$Rd), (ins GPR:$Rm), IIC_iMOVr,
"mov", ".w\t$Rd, $Rm", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = 0b0010;
let Inst{19-16} = 0b1111; // Rn
let Inst{14-12} = 0b000;
let Inst{7-4} = 0b0000;
}
def : t2InstAlias<"mov${p}.w $Rd, $Rm", (t2MOVr GPRnopc:$Rd, GPR:$Rm,
pred:$p, zero_reg)>;
def : t2InstAlias<"movs${p}.w $Rd, $Rm", (t2MOVr GPRnopc:$Rd, GPR:$Rm,
pred:$p, CPSR)>;
def : t2InstAlias<"movs${p} $Rd, $Rm", (t2MOVr GPRnopc:$Rd, GPR:$Rm,
pred:$p, CPSR)>;
// AddedComplexity to ensure isel tries t2MOVi before t2MOVi16.
let isReMaterializable = 1, isAsCheapAsAMove = 1, isMoveImm = 1,
AddedComplexity = 1 in
def t2MOVi : T2sOneRegImm<(outs rGPR:$Rd), (ins t2_so_imm:$imm), IIC_iMOVi,
"mov", ".w\t$Rd, $imm",
[(set rGPR:$Rd, t2_so_imm:$imm)]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = 0b0010;
let Inst{19-16} = 0b1111; // Rn
let Inst{15} = 0;
}
// cc_out is handled as part of the explicit mnemonic in the parser for 'mov'.
// Use aliases to get that to play nice here.
def : t2InstAlias<"movs${p}.w $Rd, $imm", (t2MOVi rGPR:$Rd, t2_so_imm:$imm,
pred:$p, CPSR)>;
def : t2InstAlias<"movs${p} $Rd, $imm", (t2MOVi rGPR:$Rd, t2_so_imm:$imm,
pred:$p, CPSR)>;
def : t2InstAlias<"mov${p}.w $Rd, $imm", (t2MOVi rGPR:$Rd, t2_so_imm:$imm,
pred:$p, zero_reg)>;
def : t2InstAlias<"mov${p} $Rd, $imm", (t2MOVi rGPR:$Rd, t2_so_imm:$imm,
pred:$p, zero_reg)>;
let isReMaterializable = 1, isAsCheapAsAMove = 1, isMoveImm = 1 in
def t2MOVi16 : T2I<(outs rGPR:$Rd), (ins imm0_65535_expr:$imm), IIC_iMOVi,
"movw", "\t$Rd, $imm",
[(set rGPR:$Rd, imm0_65535:$imm)]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 1;
let Inst{24-21} = 0b0010;
let Inst{20} = 0; // The S bit.
let Inst{15} = 0;
bits<4> Rd;
bits<16> imm;
let Inst{11-8} = Rd;
let Inst{19-16} = imm{15-12};
let Inst{26} = imm{11};
let Inst{14-12} = imm{10-8};
let Inst{7-0} = imm{7-0};
let DecoderMethod = "DecodeT2MOVTWInstruction";
}
def t2MOVi16_ga_pcrel : PseudoInst<(outs rGPR:$Rd),
(ins i32imm:$addr, pclabel:$id), IIC_iMOVi, []>;
let Constraints = "$src = $Rd" in {
def t2MOVTi16 : T2I<(outs rGPR:$Rd),
(ins rGPR:$src, imm0_65535_expr:$imm), IIC_iMOVi,
"movt", "\t$Rd, $imm",
[(set rGPR:$Rd,
(or (and rGPR:$src, 0xffff), lo16AllZero:$imm))]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 1;
let Inst{24-21} = 0b0110;
let Inst{20} = 0; // The S bit.
let Inst{15} = 0;
bits<4> Rd;
bits<16> imm;
let Inst{11-8} = Rd;
let Inst{19-16} = imm{15-12};
let Inst{26} = imm{11};
let Inst{14-12} = imm{10-8};
let Inst{7-0} = imm{7-0};
let DecoderMethod = "DecodeT2MOVTWInstruction";
}
def t2MOVTi16_ga_pcrel : PseudoInst<(outs rGPR:$Rd),
(ins rGPR:$src, i32imm:$addr, pclabel:$id), IIC_iMOVi, []>;
} // Constraints
def : T2Pat<(or rGPR:$src, 0xffff0000), (t2MOVTi16 rGPR:$src, 0xffff)>;
//===----------------------------------------------------------------------===//
// Extend Instructions.
//
// Sign extenders
def t2SXTB : T2I_ext_rrot<0b100, "sxtb",
UnOpFrag<(sext_inreg node:$Src, i8)>>;
def t2SXTH : T2I_ext_rrot<0b000, "sxth",
UnOpFrag<(sext_inreg node:$Src, i16)>>;
def t2SXTB16 : T2I_ext_rrot_sxtb16<0b010, "sxtb16">;
def t2SXTAB : T2I_exta_rrot<0b100, "sxtab",
BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS, i8))>>;
def t2SXTAH : T2I_exta_rrot<0b000, "sxtah",
BinOpFrag<(add node:$LHS, (sext_inreg node:$RHS,i16))>>;
def t2SXTAB16 : T2I_exta_rrot_np<0b010, "sxtab16">;
// Zero extenders
let AddedComplexity = 16 in {
def t2UXTB : T2I_ext_rrot<0b101, "uxtb",
UnOpFrag<(and node:$Src, 0x000000FF)>>;
def t2UXTH : T2I_ext_rrot<0b001, "uxth",
UnOpFrag<(and node:$Src, 0x0000FFFF)>>;
def t2UXTB16 : T2I_ext_rrot_uxtb16<0b011, "uxtb16",
UnOpFrag<(and node:$Src, 0x00FF00FF)>>;
// FIXME: This pattern incorrectly assumes the shl operator is a rotate.
// The transformation should probably be done as a combiner action
// instead so we can include a check for masking back in the upper
// eight bits of the source into the lower eight bits of the result.
//def : T2Pat<(and (shl rGPR:$Src, (i32 8)), 0xFF00FF),
// (t2UXTB16 rGPR:$Src, 3)>,
// Requires<[HasT2ExtractPack, IsThumb2]>;
def : T2Pat<(and (srl rGPR:$Src, (i32 8)), 0xFF00FF),
(t2UXTB16 rGPR:$Src, 1)>,
Requires<[HasT2ExtractPack, IsThumb2]>;
def t2UXTAB : T2I_exta_rrot<0b101, "uxtab",
BinOpFrag<(add node:$LHS, (and node:$RHS, 0x00FF))>>;
def t2UXTAH : T2I_exta_rrot<0b001, "uxtah",
BinOpFrag<(add node:$LHS, (and node:$RHS, 0xFFFF))>>;
def t2UXTAB16 : T2I_exta_rrot_np<0b011, "uxtab16">;
}
//===----------------------------------------------------------------------===//
// Arithmetic Instructions.
//
defm t2ADD : T2I_bin_ii12rs<0b000, "add",
BinOpFrag<(add node:$LHS, node:$RHS)>, 1>;
defm t2SUB : T2I_bin_ii12rs<0b101, "sub",
BinOpFrag<(sub node:$LHS, node:$RHS)>>;
// ADD and SUB with 's' bit set. No 12-bit immediate (T4) variants.
//
// Currently, t2ADDS/t2SUBS are pseudo opcodes that exist only in the
// selection DAG. They are "lowered" to real t2ADD/t2SUB opcodes by
// AdjustInstrPostInstrSelection where we determine whether or not to
// set the "s" bit based on CPSR liveness.
//
// FIXME: Eliminate t2ADDS/t2SUBS pseudo opcodes after adding tablegen
// support for an optional CPSR definition that corresponds to the DAG
// node's second value. We can then eliminate the implicit def of CPSR.
defm t2ADDS : T2I_bin_s_irs <IIC_iALUi, IIC_iALUr, IIC_iALUsi,
BinOpFrag<(ARMaddc node:$LHS, node:$RHS)>, 1>;
defm t2SUBS : T2I_bin_s_irs <IIC_iALUi, IIC_iALUr, IIC_iALUsi,
BinOpFrag<(ARMsubc node:$LHS, node:$RHS)>>;
let hasPostISelHook = 1 in {
defm t2ADC : T2I_adde_sube_irs<0b1010, "adc",
BinOpWithFlagFrag<(ARMadde node:$LHS, node:$RHS, node:$FLAG)>, 1>;
defm t2SBC : T2I_adde_sube_irs<0b1011, "sbc",
BinOpWithFlagFrag<(ARMsube node:$LHS, node:$RHS, node:$FLAG)>>;
}
// RSB
defm t2RSB : T2I_rbin_irs <0b1110, "rsb",
BinOpFrag<(sub node:$LHS, node:$RHS)>>;
// FIXME: Eliminate them if we can write def : Pat patterns which defines
// CPSR and the implicit def of CPSR is not needed.
defm t2RSBS : T2I_rbin_s_is <BinOpFrag<(ARMsubc node:$LHS, node:$RHS)>>;
// (sub X, imm) gets canonicalized to (add X, -imm). Match this form.
// The assume-no-carry-in form uses the negation of the input since add/sub
// assume opposite meanings of the carry flag (i.e., carry == !borrow).
// See the definition of AddWithCarry() in the ARM ARM A2.2.1 for the gory
// details.
// The AddedComplexity preferences the first variant over the others since
// it can be shrunk to a 16-bit wide encoding, while the others cannot.
let AddedComplexity = 1 in
def : T2Pat<(add GPR:$src, imm0_255_neg:$imm),
(t2SUBri GPR:$src, imm0_255_neg:$imm)>;
def : T2Pat<(add GPR:$src, t2_so_imm_neg:$imm),
(t2SUBri GPR:$src, t2_so_imm_neg:$imm)>;
def : T2Pat<(add GPR:$src, imm0_4095_neg:$imm),
(t2SUBri12 GPR:$src, imm0_4095_neg:$imm)>;
let AddedComplexity = 1 in
def : T2Pat<(ARMaddc rGPR:$src, imm0_255_neg:$imm),
(t2SUBSri rGPR:$src, imm0_255_neg:$imm)>;
def : T2Pat<(ARMaddc rGPR:$src, t2_so_imm_neg:$imm),
(t2SUBSri rGPR:$src, t2_so_imm_neg:$imm)>;
// The with-carry-in form matches bitwise not instead of the negation.
// Effectively, the inverse interpretation of the carry flag already accounts
// for part of the negation.
let AddedComplexity = 1 in
def : T2Pat<(ARMadde rGPR:$src, imm0_255_not:$imm, CPSR),
(t2SBCri rGPR:$src, imm0_255_not:$imm)>;
def : T2Pat<(ARMadde rGPR:$src, t2_so_imm_not:$imm, CPSR),
(t2SBCri rGPR:$src, t2_so_imm_not:$imm)>;
// Select Bytes -- for disassembly only
def t2SEL : T2ThreeReg<(outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm),
NoItinerary, "sel", "\t$Rd, $Rn, $Rm", []>,
Requires<[IsThumb2, HasThumb2DSP]> {
let Inst{31-27} = 0b11111;
let Inst{26-24} = 0b010;
let Inst{23} = 0b1;
let Inst{22-20} = 0b010;
let Inst{15-12} = 0b1111;
let Inst{7} = 0b1;
let Inst{6-4} = 0b000;
}
// A6.3.13, A6.3.14, A6.3.15 Parallel addition and subtraction (signed/unsigned)
// And Miscellaneous operations -- for disassembly only
class T2I_pam<bits<3> op22_20, bits<4> op7_4, string opc,
list<dag> pat = [/* For disassembly only; pattern left blank */],
dag iops = (ins rGPR:$Rn, rGPR:$Rm),
string asm = "\t$Rd, $Rn, $Rm">
: T2I<(outs rGPR:$Rd), iops, NoItinerary, opc, asm, pat>,
Requires<[IsThumb2, HasThumb2DSP]> {
let Inst{31-27} = 0b11111;
let Inst{26-23} = 0b0101;
let Inst{22-20} = op22_20;
let Inst{15-12} = 0b1111;
let Inst{7-4} = op7_4;
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{3-0} = Rm;
}
// Saturating add/subtract -- for disassembly only
def t2QADD : T2I_pam<0b000, 0b1000, "qadd",
[(set rGPR:$Rd, (int_arm_qadd rGPR:$Rn, rGPR:$Rm))],
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
def t2QADD16 : T2I_pam<0b001, 0b0001, "qadd16">;
def t2QADD8 : T2I_pam<0b000, 0b0001, "qadd8">;
def t2QASX : T2I_pam<0b010, 0b0001, "qasx">;
def t2QDADD : T2I_pam<0b000, 0b1001, "qdadd", [],
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
def t2QDSUB : T2I_pam<0b000, 0b1011, "qdsub", [],
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
def t2QSAX : T2I_pam<0b110, 0b0001, "qsax">;
def t2QSUB : T2I_pam<0b000, 0b1010, "qsub",
[(set rGPR:$Rd, (int_arm_qsub rGPR:$Rn, rGPR:$Rm))],
(ins rGPR:$Rm, rGPR:$Rn), "\t$Rd, $Rm, $Rn">;
def t2QSUB16 : T2I_pam<0b101, 0b0001, "qsub16">;
def t2QSUB8 : T2I_pam<0b100, 0b0001, "qsub8">;
def t2UQADD16 : T2I_pam<0b001, 0b0101, "uqadd16">;
def t2UQADD8 : T2I_pam<0b000, 0b0101, "uqadd8">;
def t2UQASX : T2I_pam<0b010, 0b0101, "uqasx">;
def t2UQSAX : T2I_pam<0b110, 0b0101, "uqsax">;
def t2UQSUB16 : T2I_pam<0b101, 0b0101, "uqsub16">;
def t2UQSUB8 : T2I_pam<0b100, 0b0101, "uqsub8">;
// Signed/Unsigned add/subtract -- for disassembly only
def t2SASX : T2I_pam<0b010, 0b0000, "sasx">;
def t2SADD16 : T2I_pam<0b001, 0b0000, "sadd16">;
def t2SADD8 : T2I_pam<0b000, 0b0000, "sadd8">;
def t2SSAX : T2I_pam<0b110, 0b0000, "ssax">;
def t2SSUB16 : T2I_pam<0b101, 0b0000, "ssub16">;
def t2SSUB8 : T2I_pam<0b100, 0b0000, "ssub8">;
def t2UASX : T2I_pam<0b010, 0b0100, "uasx">;
def t2UADD16 : T2I_pam<0b001, 0b0100, "uadd16">;
def t2UADD8 : T2I_pam<0b000, 0b0100, "uadd8">;
def t2USAX : T2I_pam<0b110, 0b0100, "usax">;
def t2USUB16 : T2I_pam<0b101, 0b0100, "usub16">;
def t2USUB8 : T2I_pam<0b100, 0b0100, "usub8">;
// Signed/Unsigned halving add/subtract -- for disassembly only
def t2SHASX : T2I_pam<0b010, 0b0010, "shasx">;
def t2SHADD16 : T2I_pam<0b001, 0b0010, "shadd16">;
def t2SHADD8 : T2I_pam<0b000, 0b0010, "shadd8">;
def t2SHSAX : T2I_pam<0b110, 0b0010, "shsax">;
def t2SHSUB16 : T2I_pam<0b101, 0b0010, "shsub16">;
def t2SHSUB8 : T2I_pam<0b100, 0b0010, "shsub8">;
def t2UHASX : T2I_pam<0b010, 0b0110, "uhasx">;
def t2UHADD16 : T2I_pam<0b001, 0b0110, "uhadd16">;
def t2UHADD8 : T2I_pam<0b000, 0b0110, "uhadd8">;
def t2UHSAX : T2I_pam<0b110, 0b0110, "uhsax">;
def t2UHSUB16 : T2I_pam<0b101, 0b0110, "uhsub16">;
def t2UHSUB8 : T2I_pam<0b100, 0b0110, "uhsub8">;
// Helper class for disassembly only
// A6.3.16 & A6.3.17
// T2Imac - Thumb2 multiply [accumulate, and absolute difference] instructions.
class T2ThreeReg_mac<bit long, bits<3> op22_20, bits<4> op7_4, dag oops,
dag iops, InstrItinClass itin, string opc, string asm, list<dag> pattern>
: T2ThreeReg<oops, iops, itin, opc, asm, pattern> {
let Inst{31-27} = 0b11111;
let Inst{26-24} = 0b011;
let Inst{23} = long;
let Inst{22-20} = op22_20;
let Inst{7-4} = op7_4;
}
class T2FourReg_mac<bit long, bits<3> op22_20, bits<4> op7_4, dag oops,
dag iops, InstrItinClass itin, string opc, string asm, list<dag> pattern>
: T2FourReg<oops, iops, itin, opc, asm, pattern> {
let Inst{31-27} = 0b11111;
let Inst{26-24} = 0b011;
let Inst{23} = long;
let Inst{22-20} = op22_20;
let Inst{7-4} = op7_4;
}
// Unsigned Sum of Absolute Differences [and Accumulate].
def t2USAD8 : T2ThreeReg_mac<0, 0b111, 0b0000, (outs rGPR:$Rd),
(ins rGPR:$Rn, rGPR:$Rm),
NoItinerary, "usad8", "\t$Rd, $Rn, $Rm", []>,
Requires<[IsThumb2, HasThumb2DSP]> {
let Inst{15-12} = 0b1111;
}
def t2USADA8 : T2FourReg_mac<0, 0b111, 0b0000, (outs rGPR:$Rd),
(ins rGPR:$Rn, rGPR:$Rm, rGPR:$Ra), NoItinerary,
"usada8", "\t$Rd, $Rn, $Rm, $Ra", []>,
Requires<[IsThumb2, HasThumb2DSP]>;
// Signed/Unsigned saturate.
class T2SatI<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rn;
bits<5> sat_imm;
bits<7> sh;
let Inst{11-8} = Rd;
let Inst{19-16} = Rn;
let Inst{4-0} = sat_imm;
let Inst{21} = sh{5};
let Inst{14-12} = sh{4-2};
let Inst{7-6} = sh{1-0};
}
def t2SSAT: T2SatI<
(outs rGPR:$Rd),
(ins imm1_32:$sat_imm, rGPR:$Rn, t2_shift_imm:$sh),
NoItinerary, "ssat", "\t$Rd, $sat_imm, $Rn$sh", []> {
let Inst{31-27} = 0b11110;
let Inst{25-22} = 0b1100;
let Inst{20} = 0;
let Inst{15} = 0;
let Inst{5} = 0;
}
def t2SSAT16: T2SatI<
(outs rGPR:$Rd), (ins imm1_16:$sat_imm, rGPR:$Rn), NoItinerary,
"ssat16", "\t$Rd, $sat_imm, $Rn", []>,
Requires<[IsThumb2, HasThumb2DSP]> {
let Inst{31-27} = 0b11110;
let Inst{25-22} = 0b1100;
let Inst{20} = 0;
let Inst{15} = 0;
let Inst{21} = 1; // sh = '1'
let Inst{14-12} = 0b000; // imm3 = '000'
let Inst{7-6} = 0b00; // imm2 = '00'
let Inst{5-4} = 0b00;
}
def t2USAT: T2SatI<
(outs rGPR:$Rd),
(ins imm0_31:$sat_imm, rGPR:$Rn, t2_shift_imm:$sh),
NoItinerary, "usat", "\t$Rd, $sat_imm, $Rn$sh", []> {
let Inst{31-27} = 0b11110;
let Inst{25-22} = 0b1110;
let Inst{20} = 0;
let Inst{15} = 0;
}
def t2USAT16: T2SatI<(outs rGPR:$Rd), (ins imm0_15:$sat_imm, rGPR:$Rn),
NoItinerary,
"usat16", "\t$Rd, $sat_imm, $Rn", []>,
Requires<[IsThumb2, HasThumb2DSP]> {
let Inst{31-22} = 0b1111001110;
let Inst{20} = 0;
let Inst{15} = 0;
let Inst{21} = 1; // sh = '1'
let Inst{14-12} = 0b000; // imm3 = '000'
let Inst{7-6} = 0b00; // imm2 = '00'
let Inst{5-4} = 0b00;
}
def : T2Pat<(int_arm_ssat GPR:$a, imm:$pos), (t2SSAT imm:$pos, GPR:$a, 0)>;
def : T2Pat<(int_arm_usat GPR:$a, imm:$pos), (t2USAT imm:$pos, GPR:$a, 0)>;
//===----------------------------------------------------------------------===//
// Shift and rotate Instructions.
//
defm t2LSL : T2I_sh_ir<0b00, "lsl", imm0_31,
BinOpFrag<(shl node:$LHS, node:$RHS)>, "t2LSL">;
defm t2LSR : T2I_sh_ir<0b01, "lsr", imm_sr,
BinOpFrag<(srl node:$LHS, node:$RHS)>, "t2LSR">;
defm t2ASR : T2I_sh_ir<0b10, "asr", imm_sr,
BinOpFrag<(sra node:$LHS, node:$RHS)>, "t2ASR">;
defm t2ROR : T2I_sh_ir<0b11, "ror", imm0_31,
BinOpFrag<(rotr node:$LHS, node:$RHS)>, "t2ROR">;
// (rotr x, (and y, 0x...1f)) ==> (ROR x, y)
def : Pat<(rotr rGPR:$lhs, (and rGPR:$rhs, lo5AllOne)),
(t2RORrr rGPR:$lhs, rGPR:$rhs)>;
let Uses = [CPSR] in {
def t2RRX : T2sTwoReg<(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iMOVsi,
"rrx", "\t$Rd, $Rm",
[(set rGPR:$Rd, (ARMrrx rGPR:$Rm))]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = 0b0010;
let Inst{19-16} = 0b1111; // Rn
let Inst{14-12} = 0b000;
let Inst{7-4} = 0b0011;
}
}
let isCodeGenOnly = 1, Defs = [CPSR] in {
def t2MOVsrl_flag : T2TwoRegShiftImm<
(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iMOVsi,
"lsrs", ".w\t$Rd, $Rm, #1",
[(set rGPR:$Rd, (ARMsrl_flag rGPR:$Rm))]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = 0b0010;
let Inst{20} = 1; // The S bit.
let Inst{19-16} = 0b1111; // Rn
let Inst{5-4} = 0b01; // Shift type.
// Shift amount = Inst{14-12:7-6} = 1.
let Inst{14-12} = 0b000;
let Inst{7-6} = 0b01;
}
def t2MOVsra_flag : T2TwoRegShiftImm<
(outs rGPR:$Rd), (ins rGPR:$Rm), IIC_iMOVsi,
"asrs", ".w\t$Rd, $Rm, #1",
[(set rGPR:$Rd, (ARMsra_flag rGPR:$Rm))]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = 0b0010;
let Inst{20} = 1; // The S bit.
let Inst{19-16} = 0b1111; // Rn
let Inst{5-4} = 0b10; // Shift type.
// Shift amount = Inst{14-12:7-6} = 1.
let Inst{14-12} = 0b000;
let Inst{7-6} = 0b01;
}
}
//===----------------------------------------------------------------------===//
// Bitwise Instructions.
//
defm t2AND : T2I_bin_w_irs<0b0000, "and",
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
BinOpFrag<(and node:$LHS, node:$RHS)>, "t2AND", 1>;
defm t2ORR : T2I_bin_w_irs<0b0010, "orr",
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
BinOpFrag<(or node:$LHS, node:$RHS)>, "t2ORR", 1>;
defm t2EOR : T2I_bin_w_irs<0b0100, "eor",
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
BinOpFrag<(xor node:$LHS, node:$RHS)>, "t2EOR", 1>;
defm t2BIC : T2I_bin_w_irs<0b0001, "bic",
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
BinOpFrag<(and node:$LHS, (not node:$RHS))>,
"t2BIC">;
class T2BitFI<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<5> msb;
bits<5> lsb;
let Inst{11-8} = Rd;
let Inst{4-0} = msb{4-0};
let Inst{14-12} = lsb{4-2};
let Inst{7-6} = lsb{1-0};
}
class T2TwoRegBitFI<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2BitFI<oops, iops, itin, opc, asm, pattern> {
bits<4> Rn;
let Inst{19-16} = Rn;
}
let Constraints = "$src = $Rd" in
def t2BFC : T2BitFI<(outs rGPR:$Rd), (ins rGPR:$src, bf_inv_mask_imm:$imm),
IIC_iUNAsi, "bfc", "\t$Rd, $imm",
[(set rGPR:$Rd, (and rGPR:$src, bf_inv_mask_imm:$imm))]> {
let Inst{31-27} = 0b11110;
let Inst{26} = 0; // should be 0.
let Inst{25} = 1;
let Inst{24-20} = 0b10110;
let Inst{19-16} = 0b1111; // Rn
let Inst{15} = 0;
let Inst{5} = 0; // should be 0.
bits<10> imm;
let msb{4-0} = imm{9-5};
let lsb{4-0} = imm{4-0};
}
def t2SBFX: T2TwoRegBitFI<
(outs rGPR:$Rd), (ins rGPR:$Rn, imm0_31:$lsb, imm1_32:$msb),
IIC_iUNAsi, "sbfx", "\t$Rd, $Rn, $lsb, $msb", []> {
let Inst{31-27} = 0b11110;
let Inst{25} = 1;
let Inst{24-20} = 0b10100;
let Inst{15} = 0;
}
def t2UBFX: T2TwoRegBitFI<
(outs rGPR:$Rd), (ins rGPR:$Rn, imm0_31:$lsb, imm1_32:$msb),
IIC_iUNAsi, "ubfx", "\t$Rd, $Rn, $lsb, $msb", []> {
let Inst{31-27} = 0b11110;
let Inst{25} = 1;
let Inst{24-20} = 0b11100;
let Inst{15} = 0;
}
// A8.6.18 BFI - Bitfield insert (Encoding T1)
let Constraints = "$src = $Rd" in {
def t2BFI : T2TwoRegBitFI<(outs rGPR:$Rd),
(ins rGPR:$src, rGPR:$Rn, bf_inv_mask_imm:$imm),
IIC_iBITi, "bfi", "\t$Rd, $Rn, $imm",
[(set rGPR:$Rd, (ARMbfi rGPR:$src, rGPR:$Rn,
bf_inv_mask_imm:$imm))]> {
let Inst{31-27} = 0b11110;
let Inst{26} = 0; // should be 0.
let Inst{25} = 1;
let Inst{24-20} = 0b10110;
let Inst{15} = 0;
let Inst{5} = 0; // should be 0.
bits<10> imm;
let msb{4-0} = imm{9-5};
let lsb{4-0} = imm{4-0};
}
}
defm t2ORN : T2I_bin_irs<0b0011, "orn",
IIC_iBITi, IIC_iBITr, IIC_iBITsi,
BinOpFrag<(or node:$LHS, (not node:$RHS))>,
"t2ORN", 0, "">;
/// T2I_un_irs - Defines a set of (op reg, {so_imm|r|so_reg}) patterns for a
/// unary operation that produces a value. These are predicable and can be
/// changed to modify CPSR.
multiclass T2I_un_irs<bits<4> opcod, string opc,
InstrItinClass iii, InstrItinClass iir, InstrItinClass iis,
PatFrag opnode, bit Cheap = 0, bit ReMat = 0> {
// shifted imm
def i : T2sOneRegImm<(outs rGPR:$Rd), (ins t2_so_imm:$imm), iii,
opc, "\t$Rd, $imm",
[(set rGPR:$Rd, (opnode t2_so_imm:$imm))]> {
let isAsCheapAsAMove = Cheap;
let isReMaterializable = ReMat;
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = opcod;
let Inst{19-16} = 0b1111; // Rn