//===-- AArch64ISelDAGToDAG.cpp - A dag to dag inst selector for AArch64 --===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file defines an instruction selector for the AArch64 target. // //===----------------------------------------------------------------------===// #include "AArch64MachineFunctionInfo.h" #include "AArch64TargetMachine.h" #include "MCTargetDesc/AArch64AddressingModes.h" #include "llvm/ADT/APSInt.h" #include "llvm/CodeGen/ISDOpcodes.h" #include "llvm/CodeGen/SelectionDAGISel.h" #include "llvm/IR/Function.h" // To access function attributes. #include "llvm/IR/GlobalValue.h" #include "llvm/IR/Intrinsics.h" #include "llvm/IR/IntrinsicsAArch64.h" #include "llvm/Support/Debug.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/KnownBits.h" #include "llvm/Support/MathExtras.h" #include "llvm/Support/raw_ostream.h" using namespace llvm; #define DEBUG_TYPE "aarch64-isel" #define PASS_NAME "AArch64 Instruction Selection" //===--------------------------------------------------------------------===// /// AArch64DAGToDAGISel - AArch64 specific code to select AArch64 machine /// instructions for SelectionDAG operations. /// namespace { class AArch64DAGToDAGISel : public SelectionDAGISel { /// Subtarget - Keep a pointer to the AArch64Subtarget around so that we can /// make the right decision when generating code for different targets. const AArch64Subtarget *Subtarget; public: static char ID; AArch64DAGToDAGISel() = delete; explicit AArch64DAGToDAGISel(AArch64TargetMachine &tm, CodeGenOpt::Level OptLevel) : SelectionDAGISel(ID, tm, OptLevel), Subtarget(nullptr) {} bool runOnMachineFunction(MachineFunction &MF) override { Subtarget = &MF.getSubtarget(); return SelectionDAGISel::runOnMachineFunction(MF); } void Select(SDNode *Node) override; /// SelectInlineAsmMemoryOperand - Implement addressing mode selection for /// inline asm expressions. bool SelectInlineAsmMemoryOperand(const SDValue &Op, unsigned ConstraintID, std::vector &OutOps) override; template bool SelectRDVLImm(SDValue N, SDValue &Imm); bool SelectArithExtendedRegister(SDValue N, SDValue &Reg, SDValue &Shift); bool SelectArithUXTXRegister(SDValue N, SDValue &Reg, SDValue &Shift); bool SelectArithImmed(SDValue N, SDValue &Val, SDValue &Shift); bool SelectNegArithImmed(SDValue N, SDValue &Val, SDValue &Shift); bool SelectArithShiftedRegister(SDValue N, SDValue &Reg, SDValue &Shift) { return SelectShiftedRegister(N, false, Reg, Shift); } bool SelectLogicalShiftedRegister(SDValue N, SDValue &Reg, SDValue &Shift) { return SelectShiftedRegister(N, true, Reg, Shift); } bool SelectAddrModeIndexed7S8(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed7S(N, 1, Base, OffImm); } bool SelectAddrModeIndexed7S16(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed7S(N, 2, Base, OffImm); } bool SelectAddrModeIndexed7S32(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed7S(N, 4, Base, OffImm); } bool SelectAddrModeIndexed7S64(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed7S(N, 8, Base, OffImm); } bool SelectAddrModeIndexed7S128(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed7S(N, 16, Base, OffImm); } bool SelectAddrModeIndexedS9S128(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexedBitWidth(N, true, 9, 16, Base, OffImm); } bool SelectAddrModeIndexedU6S128(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexedBitWidth(N, false, 6, 16, Base, OffImm); } bool SelectAddrModeIndexed8(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed(N, 1, Base, OffImm); } bool SelectAddrModeIndexed16(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed(N, 2, Base, OffImm); } bool SelectAddrModeIndexed32(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed(N, 4, Base, OffImm); } bool SelectAddrModeIndexed64(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed(N, 8, Base, OffImm); } bool SelectAddrModeIndexed128(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexed(N, 16, Base, OffImm); } bool SelectAddrModeUnscaled8(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeUnscaled(N, 1, Base, OffImm); } bool SelectAddrModeUnscaled16(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeUnscaled(N, 2, Base, OffImm); } bool SelectAddrModeUnscaled32(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeUnscaled(N, 4, Base, OffImm); } bool SelectAddrModeUnscaled64(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeUnscaled(N, 8, Base, OffImm); } bool SelectAddrModeUnscaled128(SDValue N, SDValue &Base, SDValue &OffImm) { return SelectAddrModeUnscaled(N, 16, Base, OffImm); } template bool SelectAddrModeIndexedUImm(SDValue N, SDValue &Base, SDValue &OffImm) { // Test if there is an appropriate addressing mode and check if the // immediate fits. bool Found = SelectAddrModeIndexed(N, Size, Base, OffImm); if (Found) { if (auto *CI = dyn_cast(OffImm)) { int64_t C = CI->getSExtValue(); if (C <= Max) return true; } } // Otherwise, base only, materialize address in register. Base = N; OffImm = CurDAG->getTargetConstant(0, SDLoc(N), MVT::i64); return true; } template bool SelectAddrModeWRO(SDValue N, SDValue &Base, SDValue &Offset, SDValue &SignExtend, SDValue &DoShift) { return SelectAddrModeWRO(N, Width / 8, Base, Offset, SignExtend, DoShift); } template bool SelectAddrModeXRO(SDValue N, SDValue &Base, SDValue &Offset, SDValue &SignExtend, SDValue &DoShift) { return SelectAddrModeXRO(N, Width / 8, Base, Offset, SignExtend, DoShift); } bool SelectExtractHigh(SDValue N, SDValue &Res) { if (Subtarget->isLittleEndian() && N->getOpcode() == ISD::BITCAST) N = N->getOperand(0); if (N->getOpcode() != ISD::EXTRACT_SUBVECTOR || !isa(N->getOperand(1))) return false; EVT VT = N->getValueType(0); EVT LVT = N->getOperand(0).getValueType(); unsigned Index = N->getConstantOperandVal(1); if (!VT.is64BitVector() || !LVT.is128BitVector() || Index != VT.getVectorNumElements()) return false; Res = N->getOperand(0); return true; } bool SelectRoundingVLShr(SDValue N, SDValue &Res1, SDValue &Res2) { if (N.getOpcode() != AArch64ISD::VLSHR) return false; SDValue Op = N->getOperand(0); EVT VT = Op.getValueType(); unsigned ShtAmt = N->getConstantOperandVal(1); if (ShtAmt > VT.getScalarSizeInBits() / 2 || Op.getOpcode() != ISD::ADD) return false; APInt Imm; if (Op.getOperand(1).getOpcode() == AArch64ISD::MOVIshift) Imm = APInt(VT.getScalarSizeInBits(), Op.getOperand(1).getConstantOperandVal(0) << Op.getOperand(1).getConstantOperandVal(1)); else if (Op.getOperand(1).getOpcode() == AArch64ISD::DUP && isa(Op.getOperand(1).getOperand(0))) Imm = APInt(VT.getScalarSizeInBits(), Op.getOperand(1).getConstantOperandVal(0)); else return false; if (Imm != 1ULL << (ShtAmt - 1)) return false; Res1 = Op.getOperand(0); Res2 = CurDAG->getTargetConstant(ShtAmt, SDLoc(N), MVT::i32); return true; } bool SelectDupZeroOrUndef(SDValue N) { switch(N->getOpcode()) { case ISD::UNDEF: return true; case AArch64ISD::DUP: case ISD::SPLAT_VECTOR: { auto Opnd0 = N->getOperand(0); if (isNullConstant(Opnd0)) return true; if (isNullFPConstant(Opnd0)) return true; break; } default: break; } return false; } bool SelectDupZero(SDValue N) { switch(N->getOpcode()) { case AArch64ISD::DUP: case ISD::SPLAT_VECTOR: { auto Opnd0 = N->getOperand(0); if (isNullConstant(Opnd0)) return true; if (isNullFPConstant(Opnd0)) return true; break; } } return false; } bool SelectDupNegativeZero(SDValue N) { switch(N->getOpcode()) { case AArch64ISD::DUP: case ISD::SPLAT_VECTOR: { ConstantFPSDNode *Const = dyn_cast(N->getOperand(0)); return Const && Const->isZero() && Const->isNegative(); } } return false; } template bool SelectSVEAddSubImm(SDValue N, SDValue &Imm, SDValue &Shift) { return SelectSVEAddSubImm(N, VT, Imm, Shift); } template bool SelectSVECpyDupImm(SDValue N, SDValue &Imm, SDValue &Shift) { return SelectSVECpyDupImm(N, VT, Imm, Shift); } template bool SelectSVELogicalImm(SDValue N, SDValue &Imm) { return SelectSVELogicalImm(N, VT, Imm, Invert); } template bool SelectSVEArithImm(SDValue N, SDValue &Imm) { return SelectSVEArithImm(N, VT, Imm); } template bool SelectSVEShiftImm(SDValue N, SDValue &Imm) { return SelectSVEShiftImm(N, Low, High, AllowSaturation, Imm); } bool SelectSVEShiftSplatImmR(SDValue N, SDValue &Imm) { if (N->getOpcode() != ISD::SPLAT_VECTOR) return false; EVT EltVT = N->getValueType(0).getVectorElementType(); return SelectSVEShiftImm(N->getOperand(0), /* Low */ 1, /* High */ EltVT.getFixedSizeInBits(), /* AllowSaturation */ true, Imm); } // Returns a suitable CNT/INC/DEC/RDVL multiplier to calculate VSCALE*N. template bool SelectCntImm(SDValue N, SDValue &Imm) { if (!isa(N)) return false; int64_t MulImm = cast(N)->getSExtValue(); if (Shift) MulImm = 1LL << MulImm; if ((MulImm % std::abs(Scale)) != 0) return false; MulImm /= Scale; if ((MulImm >= Min) && (MulImm <= Max)) { Imm = CurDAG->getTargetConstant(MulImm, SDLoc(N), MVT::i32); return true; } return false; } template bool SelectEXTImm(SDValue N, SDValue &Imm) { if (!isa(N)) return false; int64_t MulImm = cast(N)->getSExtValue(); if (MulImm >= 0 && MulImm <= Max) { MulImm *= Scale; Imm = CurDAG->getTargetConstant(MulImm, SDLoc(N), MVT::i32); return true; } return false; } template bool ImmToTile(SDValue N, SDValue &Imm) { if (auto *CI = dyn_cast(N)) { uint64_t C = CI->getZExtValue(); Imm = CurDAG->getRegister(BaseReg + C, MVT::Other); return true; } return false; } /// Form sequences of consecutive 64/128-bit registers for use in NEON /// instructions making use of a vector-list (e.g. ldN, tbl). Vecs must have /// between 1 and 4 elements. If it contains a single element that is returned /// unchanged; otherwise a REG_SEQUENCE value is returned. SDValue createDTuple(ArrayRef Vecs); SDValue createQTuple(ArrayRef Vecs); // Form a sequence of SVE registers for instructions using list of vectors, // e.g. structured loads and stores (ldN, stN). SDValue createZTuple(ArrayRef Vecs); // Similar to above, except the register must start at a multiple of the // tuple, e.g. z2 for a 2-tuple, or z8 for a 4-tuple. SDValue createZMulTuple(ArrayRef Regs); /// Generic helper for the createDTuple/createQTuple /// functions. Those should almost always be called instead. SDValue createTuple(ArrayRef Vecs, const unsigned RegClassIDs[], const unsigned SubRegs[]); void SelectTable(SDNode *N, unsigned NumVecs, unsigned Opc, bool isExt); bool tryIndexedLoad(SDNode *N); bool trySelectStackSlotTagP(SDNode *N); void SelectTagP(SDNode *N); void SelectLoad(SDNode *N, unsigned NumVecs, unsigned Opc, unsigned SubRegIdx); void SelectPostLoad(SDNode *N, unsigned NumVecs, unsigned Opc, unsigned SubRegIdx); void SelectLoadLane(SDNode *N, unsigned NumVecs, unsigned Opc); void SelectPostLoadLane(SDNode *N, unsigned NumVecs, unsigned Opc); void SelectPredicatedLoad(SDNode *N, unsigned NumVecs, unsigned Scale, unsigned Opc_rr, unsigned Opc_ri, bool IsIntr = false); void SelectDestructiveMultiIntrinsic(SDNode *N, unsigned NumVecs, bool IsZmMulti, unsigned Opcode); void SelectPExtPair(SDNode *N, unsigned Opc); void SelectWhilePair(SDNode *N, unsigned Opc); void SelectCVTIntrinsic(SDNode *N, unsigned NumVecs, unsigned Opcode); void SelectClamp(SDNode *N, unsigned NumVecs, unsigned Opcode); void SelectUnaryMultiIntrinsic(SDNode *N, unsigned NumOutVecs, bool IsTupleInput, unsigned Opc); void SelectFrintFromVT(SDNode *N, unsigned NumVecs, unsigned Opcode); template void SelectMultiVectorMove(SDNode *N, unsigned NumVecs, unsigned BaseReg, unsigned Op); bool SelectAddrModeFrameIndexSVE(SDValue N, SDValue &Base, SDValue &OffImm); /// SVE Reg+Imm addressing mode. template bool SelectAddrModeIndexedSVE(SDNode *Root, SDValue N, SDValue &Base, SDValue &OffImm); /// SVE Reg+Reg address mode. template bool SelectSVERegRegAddrMode(SDValue N, SDValue &Base, SDValue &Offset) { return SelectSVERegRegAddrMode(N, Scale, Base, Offset); } template bool SelectSMETileSlice(SDValue N, SDValue &Vector, SDValue &Offset) { return SelectSMETileSlice(N, MaxIdx, Vector, Offset, Scale); } void SelectStore(SDNode *N, unsigned NumVecs, unsigned Opc); void SelectPostStore(SDNode *N, unsigned NumVecs, unsigned Opc); void SelectStoreLane(SDNode *N, unsigned NumVecs, unsigned Opc); void SelectPostStoreLane(SDNode *N, unsigned NumVecs, unsigned Opc); void SelectPredicatedStore(SDNode *N, unsigned NumVecs, unsigned Scale, unsigned Opc_rr, unsigned Opc_ri); std::tuple findAddrModeSVELoadStore(SDNode *N, unsigned Opc_rr, unsigned Opc_ri, const SDValue &OldBase, const SDValue &OldOffset, unsigned Scale); bool tryBitfieldExtractOp(SDNode *N); bool tryBitfieldExtractOpFromSExt(SDNode *N); bool tryBitfieldInsertOp(SDNode *N); bool tryBitfieldInsertInZeroOp(SDNode *N); bool tryShiftAmountMod(SDNode *N); bool tryHighFPExt(SDNode *N); bool tryReadRegister(SDNode *N); bool tryWriteRegister(SDNode *N); bool trySelectCastFixedLengthToScalableVector(SDNode *N); bool trySelectCastScalableToFixedLengthVector(SDNode *N); // Include the pieces autogenerated from the target description. #include "AArch64GenDAGISel.inc" private: bool SelectShiftedRegister(SDValue N, bool AllowROR, SDValue &Reg, SDValue &Shift); bool SelectShiftedRegisterFromAnd(SDValue N, SDValue &Reg, SDValue &Shift); bool SelectAddrModeIndexed7S(SDValue N, unsigned Size, SDValue &Base, SDValue &OffImm) { return SelectAddrModeIndexedBitWidth(N, true, 7, Size, Base, OffImm); } bool SelectAddrModeIndexedBitWidth(SDValue N, bool IsSignedImm, unsigned BW, unsigned Size, SDValue &Base, SDValue &OffImm); bool SelectAddrModeIndexed(SDValue N, unsigned Size, SDValue &Base, SDValue &OffImm); bool SelectAddrModeUnscaled(SDValue N, unsigned Size, SDValue &Base, SDValue &OffImm); bool SelectAddrModeWRO(SDValue N, unsigned Size, SDValue &Base, SDValue &Offset, SDValue &SignExtend, SDValue &DoShift); bool SelectAddrModeXRO(SDValue N, unsigned Size, SDValue &Base, SDValue &Offset, SDValue &SignExtend, SDValue &DoShift); bool isWorthFolding(SDValue V) const; bool SelectExtendedSHL(SDValue N, unsigned Size, bool WantExtend, SDValue &Offset, SDValue &SignExtend); template bool SelectCVTFixedPosOperand(SDValue N, SDValue &FixedPos) { return SelectCVTFixedPosOperand(N, FixedPos, RegWidth); } bool SelectCVTFixedPosOperand(SDValue N, SDValue &FixedPos, unsigned Width); bool SelectCMP_SWAP(SDNode *N); bool SelectSVEAddSubImm(SDValue N, MVT VT, SDValue &Imm, SDValue &Shift); bool SelectSVECpyDupImm(SDValue N, MVT VT, SDValue &Imm, SDValue &Shift); bool SelectSVELogicalImm(SDValue N, MVT VT, SDValue &Imm, bool Invert); bool SelectSVESignedArithImm(SDValue N, SDValue &Imm); bool SelectSVEShiftImm(SDValue N, uint64_t Low, uint64_t High, bool AllowSaturation, SDValue &Imm); bool SelectSVEArithImm(SDValue N, MVT VT, SDValue &Imm); bool SelectSVERegRegAddrMode(SDValue N, unsigned Scale, SDValue &Base, SDValue &Offset); bool SelectSMETileSlice(SDValue N, unsigned MaxSize, SDValue &Vector, SDValue &Offset, unsigned Scale = 1); bool SelectAllActivePredicate(SDValue N); bool SelectAnyPredicate(SDValue N); }; } // end anonymous namespace char AArch64DAGToDAGISel::ID = 0; INITIALIZE_PASS(AArch64DAGToDAGISel, DEBUG_TYPE, PASS_NAME, false, false) /// isIntImmediate - This method tests to see if the node is a constant /// operand. If so Imm will receive the 32-bit value. static bool isIntImmediate(const SDNode *N, uint64_t &Imm) { if (const ConstantSDNode *C = dyn_cast(N)) { Imm = C->getZExtValue(); return true; } return false; } // isIntImmediate - This method tests to see if a constant operand. // If so Imm will receive the value. static bool isIntImmediate(SDValue N, uint64_t &Imm) { return isIntImmediate(N.getNode(), Imm); } // isOpcWithIntImmediate - This method tests to see if the node is a specific // opcode and that it has a immediate integer right operand. // If so Imm will receive the 32 bit value. static bool isOpcWithIntImmediate(const SDNode *N, unsigned Opc, uint64_t &Imm) { return N->getOpcode() == Opc && isIntImmediate(N->getOperand(1).getNode(), Imm); } // isIntImmediateEq - This method tests to see if N is a constant operand that // is equivalent to 'ImmExpected'. #ifndef NDEBUG static bool isIntImmediateEq(SDValue N, const uint64_t ImmExpected) { uint64_t Imm; if (!isIntImmediate(N.getNode(), Imm)) return false; return Imm == ImmExpected; } #endif bool AArch64DAGToDAGISel::SelectInlineAsmMemoryOperand( const SDValue &Op, unsigned ConstraintID, std::vector &OutOps) { switch(ConstraintID) { default: llvm_unreachable("Unexpected asm memory constraint"); case InlineAsm::Constraint_m: case InlineAsm::Constraint_o: case InlineAsm::Constraint_Q: // We need to make sure that this one operand does not end up in XZR, thus // require the address to be in a PointerRegClass register. const TargetRegisterInfo *TRI = Subtarget->getRegisterInfo(); const TargetRegisterClass *TRC = TRI->getPointerRegClass(*MF); SDLoc dl(Op); SDValue RC = CurDAG->getTargetConstant(TRC->getID(), dl, MVT::i64); SDValue NewOp = SDValue(CurDAG->getMachineNode(TargetOpcode::COPY_TO_REGCLASS, dl, Op.getValueType(), Op, RC), 0); OutOps.push_back(NewOp); return false; } return true; } /// SelectArithImmed - Select an immediate value that can be represented as /// a 12-bit value shifted left by either 0 or 12. If so, return true with /// Val set to the 12-bit value and Shift set to the shifter operand. bool AArch64DAGToDAGISel::SelectArithImmed(SDValue N, SDValue &Val, SDValue &Shift) { // This function is called from the addsub_shifted_imm ComplexPattern, // which lists [imm] as the list of opcode it's interested in, however // we still need to check whether the operand is actually an immediate // here because the ComplexPattern opcode list is only used in // root-level opcode matching. if (!isa(N.getNode())) return false; uint64_t Immed = cast(N.getNode())->getZExtValue(); unsigned ShiftAmt; if (Immed >> 12 == 0) { ShiftAmt = 0; } else if ((Immed & 0xfff) == 0 && Immed >> 24 == 0) { ShiftAmt = 12; Immed = Immed >> 12; } else return false; unsigned ShVal = AArch64_AM::getShifterImm(AArch64_AM::LSL, ShiftAmt); SDLoc dl(N); Val = CurDAG->getTargetConstant(Immed, dl, MVT::i32); Shift = CurDAG->getTargetConstant(ShVal, dl, MVT::i32); return true; } /// SelectNegArithImmed - As above, but negates the value before trying to /// select it. bool AArch64DAGToDAGISel::SelectNegArithImmed(SDValue N, SDValue &Val, SDValue &Shift) { // This function is called from the addsub_shifted_imm ComplexPattern, // which lists [imm] as the list of opcode it's interested in, however // we still need to check whether the operand is actually an immediate // here because the ComplexPattern opcode list is only used in // root-level opcode matching. if (!isa(N.getNode())) return false; // The immediate operand must be a 24-bit zero-extended immediate. uint64_t Immed = cast(N.getNode())->getZExtValue(); // This negation is almost always valid, but "cmp wN, #0" and "cmn wN, #0" // have the opposite effect on the C flag, so this pattern mustn't match under // those circumstances. if (Immed == 0) return false; if (N.getValueType() == MVT::i32) Immed = ~((uint32_t)Immed) + 1; else Immed = ~Immed + 1ULL; if (Immed & 0xFFFFFFFFFF000000ULL) return false; Immed &= 0xFFFFFFULL; return SelectArithImmed(CurDAG->getConstant(Immed, SDLoc(N), MVT::i32), Val, Shift); } /// getShiftTypeForNode - Translate a shift node to the corresponding /// ShiftType value. static AArch64_AM::ShiftExtendType getShiftTypeForNode(SDValue N) { switch (N.getOpcode()) { default: return AArch64_AM::InvalidShiftExtend; case ISD::SHL: return AArch64_AM::LSL; case ISD::SRL: return AArch64_AM::LSR; case ISD::SRA: return AArch64_AM::ASR; case ISD::ROTR: return AArch64_AM::ROR; } } /// Determine whether it is worth it to fold SHL into the addressing /// mode. static bool isWorthFoldingSHL(SDValue V) { assert(V.getOpcode() == ISD::SHL && "invalid opcode"); // It is worth folding logical shift of up to three places. auto *CSD = dyn_cast(V.getOperand(1)); if (!CSD) return false; unsigned ShiftVal = CSD->getZExtValue(); if (ShiftVal > 3) return false; // Check if this particular node is reused in any non-memory related // operation. If yes, do not try to fold this node into the address // computation, since the computation will be kept. const SDNode *Node = V.getNode(); for (SDNode *UI : Node->uses()) if (!isa(*UI)) for (SDNode *UII : UI->uses()) if (!isa(*UII)) return false; return true; } /// Determine whether it is worth to fold V into an extended register. bool AArch64DAGToDAGISel::isWorthFolding(SDValue V) const { // Trivial if we are optimizing for code size or if there is only // one use of the value. if (CurDAG->shouldOptForSize() || V.hasOneUse()) return true; // If a subtarget has a fastpath LSL we can fold a logical shift into // the addressing mode and save a cycle. if (Subtarget->hasLSLFast() && V.getOpcode() == ISD::SHL && isWorthFoldingSHL(V)) return true; if (Subtarget->hasLSLFast() && V.getOpcode() == ISD::ADD) { const SDValue LHS = V.getOperand(0); const SDValue RHS = V.getOperand(1); if (LHS.getOpcode() == ISD::SHL && isWorthFoldingSHL(LHS)) return true; if (RHS.getOpcode() == ISD::SHL && isWorthFoldingSHL(RHS)) return true; } // It hurts otherwise, since the value will be reused. return false; } /// and (shl/srl/sra, x, c), mask --> shl (srl/sra, x, c1), c2 /// to select more shifted register bool AArch64DAGToDAGISel::SelectShiftedRegisterFromAnd(SDValue N, SDValue &Reg, SDValue &Shift) { EVT VT = N.getValueType(); if (VT != MVT::i32 && VT != MVT::i64) return false; if (N->getOpcode() != ISD::AND || !N->hasOneUse()) return false; SDValue LHS = N.getOperand(0); if (!LHS->hasOneUse()) return false; unsigned LHSOpcode = LHS->getOpcode(); if (LHSOpcode != ISD::SHL && LHSOpcode != ISD::SRL && LHSOpcode != ISD::SRA) return false; ConstantSDNode *ShiftAmtNode = dyn_cast(LHS.getOperand(1)); if (!ShiftAmtNode) return false; uint64_t ShiftAmtC = ShiftAmtNode->getZExtValue(); ConstantSDNode *RHSC = dyn_cast(N.getOperand(1)); if (!RHSC) return false; APInt AndMask = RHSC->getAPIntValue(); unsigned LowZBits, MaskLen; if (!AndMask.isShiftedMask(LowZBits, MaskLen)) return false; unsigned BitWidth = N.getValueSizeInBits(); SDLoc DL(LHS); uint64_t NewShiftC; unsigned NewShiftOp; if (LHSOpcode == ISD::SHL) { // LowZBits <= ShiftAmtC will fall into isBitfieldPositioningOp // BitWidth != LowZBits + MaskLen doesn't match the pattern if (LowZBits <= ShiftAmtC || (BitWidth != LowZBits + MaskLen)) return false; NewShiftC = LowZBits - ShiftAmtC; NewShiftOp = VT == MVT::i64 ? AArch64::UBFMXri : AArch64::UBFMWri; } else { if (LowZBits == 0) return false; // NewShiftC >= BitWidth will fall into isBitfieldExtractOp NewShiftC = LowZBits + ShiftAmtC; if (NewShiftC >= BitWidth) return false; // SRA need all high bits if (LHSOpcode == ISD::SRA && (BitWidth != (LowZBits + MaskLen))) return false; // SRL high bits can be 0 or 1 if (LHSOpcode == ISD::SRL && (BitWidth > (NewShiftC + MaskLen))) return false; if (LHSOpcode == ISD::SRL) NewShiftOp = VT == MVT::i64 ? AArch64::UBFMXri : AArch64::UBFMWri; else NewShiftOp = VT == MVT::i64 ? AArch64::SBFMXri : AArch64::SBFMWri; } assert(NewShiftC < BitWidth && "Invalid shift amount"); SDValue NewShiftAmt = CurDAG->getTargetConstant(NewShiftC, DL, VT); SDValue BitWidthMinus1 = CurDAG->getTargetConstant(BitWidth - 1, DL, VT); Reg = SDValue(CurDAG->getMachineNode(NewShiftOp, DL, VT, LHS->getOperand(0), NewShiftAmt, BitWidthMinus1), 0); unsigned ShVal = AArch64_AM::getShifterImm(AArch64_AM::LSL, LowZBits); Shift = CurDAG->getTargetConstant(ShVal, DL, MVT::i32); return true; } /// SelectShiftedRegister - Select a "shifted register" operand. If the value /// is not shifted, set the Shift operand to default of "LSL 0". The logical /// instructions allow the shifted register to be rotated, but the arithmetic /// instructions do not. The AllowROR parameter specifies whether ROR is /// supported. bool AArch64DAGToDAGISel::SelectShiftedRegister(SDValue N, bool AllowROR, SDValue &Reg, SDValue &Shift) { if (SelectShiftedRegisterFromAnd(N, Reg, Shift)) return true; AArch64_AM::ShiftExtendType ShType = getShiftTypeForNode(N); if (ShType == AArch64_AM::InvalidShiftExtend) return false; if (!AllowROR && ShType == AArch64_AM::ROR) return false; if (ConstantSDNode *RHS = dyn_cast(N.getOperand(1))) { unsigned BitSize = N.getValueSizeInBits(); unsigned Val = RHS->getZExtValue() & (BitSize - 1); unsigned ShVal = AArch64_AM::getShifterImm(ShType, Val); Reg = N.getOperand(0); Shift = CurDAG->getTargetConstant(ShVal, SDLoc(N), MVT::i32); return isWorthFolding(N); } return false; } /// getExtendTypeForNode - Translate an extend node to the corresponding /// ExtendType value. static AArch64_AM::ShiftExtendType getExtendTypeForNode(SDValue N, bool IsLoadStore = false) { if (N.getOpcode() == ISD::SIGN_EXTEND || N.getOpcode() == ISD::SIGN_EXTEND_INREG) { EVT SrcVT; if (N.getOpcode() == ISD::SIGN_EXTEND_INREG) SrcVT = cast(N.getOperand(1))->getVT(); else SrcVT = N.getOperand(0).getValueType(); if (!IsLoadStore && SrcVT == MVT::i8) return AArch64_AM::SXTB; else if (!IsLoadStore && SrcVT == MVT::i16) return AArch64_AM::SXTH; else if (SrcVT == MVT::i32) return AArch64_AM::SXTW; assert(SrcVT != MVT::i64 && "extend from 64-bits?"); return AArch64_AM::InvalidShiftExtend; } else if (N.getOpcode() == ISD::ZERO_EXTEND || N.getOpcode() == ISD::ANY_EXTEND) { EVT SrcVT = N.getOperand(0).getValueType(); if (!IsLoadStore && SrcVT == MVT::i8) return AArch64_AM::UXTB; else if (!IsLoadStore && SrcVT == MVT::i16) return AArch64_AM::UXTH; else if (SrcVT == MVT::i32) return AArch64_AM::UXTW; assert(SrcVT != MVT::i64 && "extend from 64-bits?"); return AArch64_AM::InvalidShiftExtend; } else if (N.getOpcode() == ISD::AND) { ConstantSDNode *CSD = dyn_cast(N.getOperand(1)); if (!CSD) return AArch64_AM::InvalidShiftExtend; uint64_t AndMask = CSD->getZExtValue(); switch (AndMask) { default: return AArch64_AM::InvalidShiftExtend; case 0xFF: return !IsLoadStore ? AArch64_AM::UXTB : AArch64_AM::InvalidShiftExtend; case 0xFFFF: return !IsLoadStore ? AArch64_AM::UXTH : AArch64_AM::InvalidShiftExtend; case 0xFFFFFFFF: return AArch64_AM::UXTW; } } return AArch64_AM::InvalidShiftExtend; } /// Instructions that accept extend modifiers like UXTW expect the register /// being extended to be a GPR32, but the incoming DAG might be acting on a /// GPR64 (either via SEXT_INREG or AND). Extract the appropriate low bits if /// this is the case. static SDValue narrowIfNeeded(SelectionDAG *CurDAG, SDValue N) { if (N.getValueType() == MVT::i32) return N; SDLoc dl(N); return CurDAG->getTargetExtractSubreg(AArch64::sub_32, dl, MVT::i32, N); } // Returns a suitable CNT/INC/DEC/RDVL multiplier to calculate VSCALE*N. template bool AArch64DAGToDAGISel::SelectRDVLImm(SDValue N, SDValue &Imm) { if (!isa(N)) return false; int64_t MulImm = cast(N)->getSExtValue(); if ((MulImm % std::abs(Scale)) == 0) { int64_t RDVLImm = MulImm / Scale; if ((RDVLImm >= Low) && (RDVLImm <= High)) { Imm = CurDAG->getTargetConstant(RDVLImm, SDLoc(N), MVT::i32); return true; } } return false; } /// SelectArithExtendedRegister - Select a "extended register" operand. This /// operand folds in an extend followed by an optional left shift. bool AArch64DAGToDAGISel::SelectArithExtendedRegister(SDValue N, SDValue &Reg, SDValue &Shift) { unsigned ShiftVal = 0; AArch64_AM::ShiftExtendType Ext; if (N.getOpcode() == ISD::SHL) { ConstantSDNode *CSD = dyn_cast(N.getOperand(1)); if (!CSD) return false; ShiftVal = CSD->getZExtValue(); if (ShiftVal > 4) return false; Ext = getExtendTypeForNode(N.getOperand(0)); if (Ext == AArch64_AM::InvalidShiftExtend) return false; Reg = N.getOperand(0).getOperand(0); } else { Ext = getExtendTypeForNode(N); if (Ext == AArch64_AM::InvalidShiftExtend) return false; Reg = N.getOperand(0); // Don't match if free 32-bit -> 64-bit zext can be used instead. Use the // isDef32 as a heuristic for when the operand is likely to be a 32bit def. auto isDef32 = [](SDValue N) { unsigned Opc = N.getOpcode(); return Opc != ISD::TRUNCATE && Opc != TargetOpcode::EXTRACT_SUBREG && Opc != ISD::CopyFromReg && Opc != ISD::AssertSext && Opc != ISD::AssertZext && Opc != ISD::AssertAlign && Opc != ISD::FREEZE; }; if (Ext == AArch64_AM::UXTW && Reg->getValueType(0).getSizeInBits() == 32 && isDef32(Reg)) return false; } // AArch64 mandates that the RHS of the operation must use the smallest // register class that could contain the size being extended from. Thus, // if we're folding a (sext i8), we need the RHS to be a GPR32, even though // there might not be an actual 32-bit value in the program. We can // (harmlessly) synthesize one by injected an EXTRACT_SUBREG here. assert(Ext != AArch64_AM::UXTX && Ext != AArch64_AM::SXTX); Reg = narrowIfNeeded(CurDAG, Reg); Shift = CurDAG->getTargetConstant(getArithExtendImm(Ext, ShiftVal), SDLoc(N), MVT::i32); return isWorthFolding(N); } /// SelectArithUXTXRegister - Select a "UXTX register" operand. This /// operand is refered by the instructions have SP operand bool AArch64DAGToDAGISel::SelectArithUXTXRegister(SDValue N, SDValue &Reg, SDValue &Shift) { unsigned ShiftVal = 0; AArch64_AM::ShiftExtendType Ext; if (N.getOpcode() != ISD::SHL) return false; ConstantSDNode *CSD = dyn_cast(N.getOperand(1)); if (!CSD) return false; ShiftVal = CSD->getZExtValue(); if (ShiftVal > 4) return false; Ext = AArch64_AM::UXTX; Reg = N.getOperand(0); Shift = CurDAG->getTargetConstant(getArithExtendImm(Ext, ShiftVal), SDLoc(N), MVT::i32); return isWorthFolding(N); } /// If there's a use of this ADDlow that's not itself a load/store then we'll /// need to create a real ADD instruction from it anyway and there's no point in /// folding it into the mem op. Theoretically, it shouldn't matter, but there's /// a single pseudo-instruction for an ADRP/ADD pair so over-aggressive folding /// leads to duplicated ADRP instructions. static bool isWorthFoldingADDlow(SDValue N) { for (auto *Use : N->uses()) { if (Use->getOpcode() != ISD::LOAD && Use->getOpcode() != ISD::STORE && Use->getOpcode() != ISD::ATOMIC_LOAD && Use->getOpcode() != ISD::ATOMIC_STORE) return false; // ldar and stlr have much more restrictive addressing modes (just a // register). if (isStrongerThanMonotonic(cast(Use)->getSuccessOrdering())) return false; } return true; } /// SelectAddrModeIndexedBitWidth - Select a "register plus scaled (un)signed BW-bit /// immediate" address. The "Size" argument is the size in bytes of the memory /// reference, which determines the scale. bool AArch64DAGToDAGISel::SelectAddrModeIndexedBitWidth(SDValue N, bool IsSignedImm, unsigned BW, unsigned Size, SDValue &Base, SDValue &OffImm) { SDLoc dl(N); const DataLayout &DL = CurDAG->getDataLayout(); const TargetLowering *TLI = getTargetLowering(); if (N.getOpcode() == ISD::FrameIndex) { int FI = cast(N)->getIndex(); Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); OffImm = CurDAG->getTargetConstant(0, dl, MVT::i64); return true; } // As opposed to the (12-bit) Indexed addressing mode below, the 7/9-bit signed // selected here doesn't support labels/immediates, only base+offset. if (CurDAG->isBaseWithConstantOffset(N)) { if (ConstantSDNode *RHS = dyn_cast(N.getOperand(1))) { if (IsSignedImm) { int64_t RHSC = RHS->getSExtValue(); unsigned Scale = Log2_32(Size); int64_t Range = 0x1LL << (BW - 1); if ((RHSC & (Size - 1)) == 0 && RHSC >= -(Range << Scale) && RHSC < (Range << Scale)) { Base = N.getOperand(0); if (Base.getOpcode() == ISD::FrameIndex) { int FI = cast(Base)->getIndex(); Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); } OffImm = CurDAG->getTargetConstant(RHSC >> Scale, dl, MVT::i64); return true; } } else { // unsigned Immediate uint64_t RHSC = RHS->getZExtValue(); unsigned Scale = Log2_32(Size); uint64_t Range = 0x1ULL << BW; if ((RHSC & (Size - 1)) == 0 && RHSC < (Range << Scale)) { Base = N.getOperand(0); if (Base.getOpcode() == ISD::FrameIndex) { int FI = cast(Base)->getIndex(); Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); } OffImm = CurDAG->getTargetConstant(RHSC >> Scale, dl, MVT::i64); return true; } } } } // Base only. The address will be materialized into a register before // the memory is accessed. // add x0, Xbase, #offset // stp x1, x2, [x0] Base = N; OffImm = CurDAG->getTargetConstant(0, dl, MVT::i64); return true; } /// SelectAddrModeIndexed - Select a "register plus scaled unsigned 12-bit /// immediate" address. The "Size" argument is the size in bytes of the memory /// reference, which determines the scale. bool AArch64DAGToDAGISel::SelectAddrModeIndexed(SDValue N, unsigned Size, SDValue &Base, SDValue &OffImm) { SDLoc dl(N); const DataLayout &DL = CurDAG->getDataLayout(); const TargetLowering *TLI = getTargetLowering(); if (N.getOpcode() == ISD::FrameIndex) { int FI = cast(N)->getIndex(); Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); OffImm = CurDAG->getTargetConstant(0, dl, MVT::i64); return true; } if (N.getOpcode() == AArch64ISD::ADDlow && isWorthFoldingADDlow(N)) { GlobalAddressSDNode *GAN = dyn_cast(N.getOperand(1).getNode()); Base = N.getOperand(0); OffImm = N.getOperand(1); if (!GAN) return true; if (GAN->getOffset() % Size == 0 && GAN->getGlobal()->getPointerAlignment(DL) >= Size) return true; } if (CurDAG->isBaseWithConstantOffset(N)) { if (ConstantSDNode *RHS = dyn_cast(N.getOperand(1))) { int64_t RHSC = (int64_t)RHS->getZExtValue(); unsigned Scale = Log2_32(Size); if ((RHSC & (Size - 1)) == 0 && RHSC >= 0 && RHSC < (0x1000 << Scale)) { Base = N.getOperand(0); if (Base.getOpcode() == ISD::FrameIndex) { int FI = cast(Base)->getIndex(); Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); } OffImm = CurDAG->getTargetConstant(RHSC >> Scale, dl, MVT::i64); return true; } } } // Before falling back to our general case, check if the unscaled // instructions can handle this. If so, that's preferable. if (SelectAddrModeUnscaled(N, Size, Base, OffImm)) return false; // Base only. The address will be materialized into a register before // the memory is accessed. // add x0, Xbase, #offset // ldr x0, [x0] Base = N; OffImm = CurDAG->getTargetConstant(0, dl, MVT::i64); return true; } /// SelectAddrModeUnscaled - Select a "register plus unscaled signed 9-bit /// immediate" address. This should only match when there is an offset that /// is not valid for a scaled immediate addressing mode. The "Size" argument /// is the size in bytes of the memory reference, which is needed here to know /// what is valid for a scaled immediate. bool AArch64DAGToDAGISel::SelectAddrModeUnscaled(SDValue N, unsigned Size, SDValue &Base, SDValue &OffImm) { if (!CurDAG->isBaseWithConstantOffset(N)) return false; if (ConstantSDNode *RHS = dyn_cast(N.getOperand(1))) { int64_t RHSC = RHS->getSExtValue(); // If the offset is valid as a scaled immediate, don't match here. if ((RHSC & (Size - 1)) == 0 && RHSC >= 0 && RHSC < (0x1000 << Log2_32(Size))) return false; if (RHSC >= -256 && RHSC < 256) { Base = N.getOperand(0); if (Base.getOpcode() == ISD::FrameIndex) { int FI = cast(Base)->getIndex(); const TargetLowering *TLI = getTargetLowering(); Base = CurDAG->getTargetFrameIndex( FI, TLI->getPointerTy(CurDAG->getDataLayout())); } OffImm = CurDAG->getTargetConstant(RHSC, SDLoc(N), MVT::i64); return true; } } return false; } static SDValue Widen(SelectionDAG *CurDAG, SDValue N) { SDLoc dl(N); SDValue ImpDef = SDValue( CurDAG->getMachineNode(TargetOpcode::IMPLICIT_DEF, dl, MVT::i64), 0); return CurDAG->getTargetInsertSubreg(AArch64::sub_32, dl, MVT::i64, ImpDef, N); } /// Check if the given SHL node (\p N), can be used to form an /// extended register for an addressing mode. bool AArch64DAGToDAGISel::SelectExtendedSHL(SDValue N, unsigned Size, bool WantExtend, SDValue &Offset, SDValue &SignExtend) { assert(N.getOpcode() == ISD::SHL && "Invalid opcode."); ConstantSDNode *CSD = dyn_cast(N.getOperand(1)); if (!CSD || (CSD->getZExtValue() & 0x7) != CSD->getZExtValue()) return false; SDLoc dl(N); if (WantExtend) { AArch64_AM::ShiftExtendType Ext = getExtendTypeForNode(N.getOperand(0), true); if (Ext == AArch64_AM::InvalidShiftExtend) return false; Offset = narrowIfNeeded(CurDAG, N.getOperand(0).getOperand(0)); SignExtend = CurDAG->getTargetConstant(Ext == AArch64_AM::SXTW, dl, MVT::i32); } else { Offset = N.getOperand(0); SignExtend = CurDAG->getTargetConstant(0, dl, MVT::i32); } unsigned LegalShiftVal = Log2_32(Size); unsigned ShiftVal = CSD->getZExtValue(); if (ShiftVal != 0 && ShiftVal != LegalShiftVal) return false; return isWorthFolding(N); } bool AArch64DAGToDAGISel::SelectAddrModeWRO(SDValue N, unsigned Size, SDValue &Base, SDValue &Offset, SDValue &SignExtend, SDValue &DoShift) { if (N.getOpcode() != ISD::ADD) return false; SDValue LHS = N.getOperand(0); SDValue RHS = N.getOperand(1); SDLoc dl(N); // We don't want to match immediate adds here, because they are better lowered // to the register-immediate addressing modes. if (isa(LHS) || isa(RHS)) return false; // Check if this particular node is reused in any non-memory related // operation. If yes, do not try to fold this node into the address // computation, since the computation will be kept. const SDNode *Node = N.getNode(); for (SDNode *UI : Node->uses()) { if (!isa(*UI)) return false; } // Remember if it is worth folding N when it produces extended register. bool IsExtendedRegisterWorthFolding = isWorthFolding(N); // Try to match a shifted extend on the RHS. if (IsExtendedRegisterWorthFolding && RHS.getOpcode() == ISD::SHL && SelectExtendedSHL(RHS, Size, true, Offset, SignExtend)) { Base = LHS; DoShift = CurDAG->getTargetConstant(true, dl, MVT::i32); return true; } // Try to match a shifted extend on the LHS. if (IsExtendedRegisterWorthFolding && LHS.getOpcode() == ISD::SHL && SelectExtendedSHL(LHS, Size, true, Offset, SignExtend)) { Base = RHS; DoShift = CurDAG->getTargetConstant(true, dl, MVT::i32); return true; } // There was no shift, whatever else we find. DoShift = CurDAG->getTargetConstant(false, dl, MVT::i32); AArch64_AM::ShiftExtendType Ext = AArch64_AM::InvalidShiftExtend; // Try to match an unshifted extend on the LHS. if (IsExtendedRegisterWorthFolding && (Ext = getExtendTypeForNode(LHS, true)) != AArch64_AM::InvalidShiftExtend) { Base = RHS; Offset = narrowIfNeeded(CurDAG, LHS.getOperand(0)); SignExtend = CurDAG->getTargetConstant(Ext == AArch64_AM::SXTW, dl, MVT::i32); if (isWorthFolding(LHS)) return true; } // Try to match an unshifted extend on the RHS. if (IsExtendedRegisterWorthFolding && (Ext = getExtendTypeForNode(RHS, true)) != AArch64_AM::InvalidShiftExtend) { Base = LHS; Offset = narrowIfNeeded(CurDAG, RHS.getOperand(0)); SignExtend = CurDAG->getTargetConstant(Ext == AArch64_AM::SXTW, dl, MVT::i32); if (isWorthFolding(RHS)) return true; } return false; } // Check if the given immediate is preferred by ADD. If an immediate can be // encoded in an ADD, or it can be encoded in an "ADD LSL #12" and can not be // encoded by one MOVZ, return true. static bool isPreferredADD(int64_t ImmOff) { // Constant in [0x0, 0xfff] can be encoded in ADD. if ((ImmOff & 0xfffffffffffff000LL) == 0x0LL) return true; // Check if it can be encoded in an "ADD LSL #12". if ((ImmOff & 0xffffffffff000fffLL) == 0x0LL) // As a single MOVZ is faster than a "ADD of LSL #12", ignore such constant. return (ImmOff & 0xffffffffff00ffffLL) != 0x0LL && (ImmOff & 0xffffffffffff0fffLL) != 0x0LL; return false; } bool AArch64DAGToDAGISel::SelectAddrModeXRO(SDValue N, unsigned Size, SDValue &Base, SDValue &Offset, SDValue &SignExtend, SDValue &DoShift) { if (N.getOpcode() != ISD::ADD) return false; SDValue LHS = N.getOperand(0); SDValue RHS = N.getOperand(1); SDLoc DL(N); // Check if this particular node is reused in any non-memory related // operation. If yes, do not try to fold this node into the address // computation, since the computation will be kept. const SDNode *Node = N.getNode(); for (SDNode *UI : Node->uses()) { if (!isa(*UI)) return false; } // Watch out if RHS is a wide immediate, it can not be selected into // [BaseReg+Imm] addressing mode. Also it may not be able to be encoded into // ADD/SUB. Instead it will use [BaseReg + 0] address mode and generate // instructions like: // MOV X0, WideImmediate // ADD X1, BaseReg, X0 // LDR X2, [X1, 0] // For such situation, using [BaseReg, XReg] addressing mode can save one // ADD/SUB: // MOV X0, WideImmediate // LDR X2, [BaseReg, X0] if (isa(RHS)) { int64_t ImmOff = (int64_t)cast(RHS)->getZExtValue(); unsigned Scale = Log2_32(Size); // Skip the immediate can be selected by load/store addressing mode. // Also skip the immediate can be encoded by a single ADD (SUB is also // checked by using -ImmOff). if ((ImmOff % Size == 0 && ImmOff >= 0 && ImmOff < (0x1000 << Scale)) || isPreferredADD(ImmOff) || isPreferredADD(-ImmOff)) return false; SDValue Ops[] = { RHS }; SDNode *MOVI = CurDAG->getMachineNode(AArch64::MOVi64imm, DL, MVT::i64, Ops); SDValue MOVIV = SDValue(MOVI, 0); // This ADD of two X register will be selected into [Reg+Reg] mode. N = CurDAG->getNode(ISD::ADD, DL, MVT::i64, LHS, MOVIV); } // Remember if it is worth folding N when it produces extended register. bool IsExtendedRegisterWorthFolding = isWorthFolding(N); // Try to match a shifted extend on the RHS. if (IsExtendedRegisterWorthFolding && RHS.getOpcode() == ISD::SHL && SelectExtendedSHL(RHS, Size, false, Offset, SignExtend)) { Base = LHS; DoShift = CurDAG->getTargetConstant(true, DL, MVT::i32); return true; } // Try to match a shifted extend on the LHS. if (IsExtendedRegisterWorthFolding && LHS.getOpcode() == ISD::SHL && SelectExtendedSHL(LHS, Size, false, Offset, SignExtend)) { Base = RHS; DoShift = CurDAG->getTargetConstant(true, DL, MVT::i32); return true; } // Match any non-shifted, non-extend, non-immediate add expression. Base = LHS; Offset = RHS; SignExtend = CurDAG->getTargetConstant(false, DL, MVT::i32); DoShift = CurDAG->getTargetConstant(false, DL, MVT::i32); // Reg1 + Reg2 is free: no check needed. return true; } SDValue AArch64DAGToDAGISel::createDTuple(ArrayRef Regs) { static const unsigned RegClassIDs[] = { AArch64::DDRegClassID, AArch64::DDDRegClassID, AArch64::DDDDRegClassID}; static const unsigned SubRegs[] = {AArch64::dsub0, AArch64::dsub1, AArch64::dsub2, AArch64::dsub3}; return createTuple(Regs, RegClassIDs, SubRegs); } SDValue AArch64DAGToDAGISel::createQTuple(ArrayRef Regs) { static const unsigned RegClassIDs[] = { AArch64::QQRegClassID, AArch64::QQQRegClassID, AArch64::QQQQRegClassID}; static const unsigned SubRegs[] = {AArch64::qsub0, AArch64::qsub1, AArch64::qsub2, AArch64::qsub3}; return createTuple(Regs, RegClassIDs, SubRegs); } SDValue AArch64DAGToDAGISel::createZTuple(ArrayRef Regs) { static const unsigned RegClassIDs[] = {AArch64::ZPR2RegClassID, AArch64::ZPR3RegClassID, AArch64::ZPR4RegClassID}; static const unsigned SubRegs[] = {AArch64::zsub0, AArch64::zsub1, AArch64::zsub2, AArch64::zsub3}; return createTuple(Regs, RegClassIDs, SubRegs); } SDValue AArch64DAGToDAGISel::createZMulTuple(ArrayRef Regs) { assert(Regs.size() == 2 || Regs.size() == 4); // The createTuple interface requires 3 RegClassIDs for each possible // tuple type even though we only have them for ZPR2 and ZPR4. static const unsigned RegClassIDs[] = {AArch64::ZPR2Mul2RegClassID, 0, AArch64::ZPR4Mul4RegClassID}; static const unsigned SubRegs[] = {AArch64::zsub0, AArch64::zsub1, AArch64::zsub2, AArch64::zsub3}; return createTuple(Regs, RegClassIDs, SubRegs); } SDValue AArch64DAGToDAGISel::createTuple(ArrayRef Regs, const unsigned RegClassIDs[], const unsigned SubRegs[]) { // There's no special register-class for a vector-list of 1 element: it's just // a vector. if (Regs.size() == 1) return Regs[0]; assert(Regs.size() >= 2 && Regs.size() <= 4); SDLoc DL(Regs[0]); SmallVector Ops; // First operand of REG_SEQUENCE is the desired RegClass. Ops.push_back( CurDAG->getTargetConstant(RegClassIDs[Regs.size() - 2], DL, MVT::i32)); // Then we get pairs of source & subregister-position for the components. for (unsigned i = 0; i < Regs.size(); ++i) { Ops.push_back(Regs[i]); Ops.push_back(CurDAG->getTargetConstant(SubRegs[i], DL, MVT::i32)); } SDNode *N = CurDAG->getMachineNode(TargetOpcode::REG_SEQUENCE, DL, MVT::Untyped, Ops); return SDValue(N, 0); } void AArch64DAGToDAGISel::SelectTable(SDNode *N, unsigned NumVecs, unsigned Opc, bool isExt) { SDLoc dl(N); EVT VT = N->getValueType(0); unsigned ExtOff = isExt; // Form a REG_SEQUENCE to force register allocation. unsigned Vec0Off = ExtOff + 1; SmallVector Regs(N->op_begin() + Vec0Off, N->op_begin() + Vec0Off + NumVecs); SDValue RegSeq = createQTuple(Regs); SmallVector Ops; if (isExt) Ops.push_back(N->getOperand(1)); Ops.push_back(RegSeq); Ops.push_back(N->getOperand(NumVecs + ExtOff + 1)); ReplaceNode(N, CurDAG->getMachineNode(Opc, dl, VT, Ops)); } bool AArch64DAGToDAGISel::tryIndexedLoad(SDNode *N) { LoadSDNode *LD = cast(N); if (LD->isUnindexed()) return false; EVT VT = LD->getMemoryVT(); EVT DstVT = N->getValueType(0); ISD::MemIndexedMode AM = LD->getAddressingMode(); bool IsPre = AM == ISD::PRE_INC || AM == ISD::PRE_DEC; // We're not doing validity checking here. That was done when checking // if we should mark the load as indexed or not. We're just selecting // the right instruction. unsigned Opcode = 0; ISD::LoadExtType ExtType = LD->getExtensionType(); bool InsertTo64 = false; if (VT == MVT::i64) Opcode = IsPre ? AArch64::LDRXpre : AArch64::LDRXpost; else if (VT == MVT::i32) { if (ExtType == ISD::NON_EXTLOAD) Opcode = IsPre ? AArch64::LDRWpre : AArch64::LDRWpost; else if (ExtType == ISD::SEXTLOAD) Opcode = IsPre ? AArch64::LDRSWpre : AArch64::LDRSWpost; else { Opcode = IsPre ? AArch64::LDRWpre : AArch64::LDRWpost; InsertTo64 = true; // The result of the load is only i32. It's the subreg_to_reg that makes // it into an i64. DstVT = MVT::i32; } } else if (VT == MVT::i16) { if (ExtType == ISD::SEXTLOAD) { if (DstVT == MVT::i64) Opcode = IsPre ? AArch64::LDRSHXpre : AArch64::LDRSHXpost; else Opcode = IsPre ? AArch64::LDRSHWpre : AArch64::LDRSHWpost; } else { Opcode = IsPre ? AArch64::LDRHHpre : AArch64::LDRHHpost; InsertTo64 = DstVT == MVT::i64; // The result of the load is only i32. It's the subreg_to_reg that makes // it into an i64. DstVT = MVT::i32; } } else if (VT == MVT::i8) { if (ExtType == ISD::SEXTLOAD) { if (DstVT == MVT::i64) Opcode = IsPre ? AArch64::LDRSBXpre : AArch64::LDRSBXpost; else Opcode = IsPre ? AArch64::LDRSBWpre : AArch64::LDRSBWpost; } else { Opcode = IsPre ? AArch64::LDRBBpre : AArch64::LDRBBpost; InsertTo64 = DstVT == MVT::i64; // The result of the load is only i32. It's the subreg_to_reg that makes // it into an i64. DstVT = MVT::i32; } } else if (VT == MVT::f16) { Opcode = IsPre ? AArch64::LDRHpre : AArch64::LDRHpost; } else if (VT == MVT::bf16) { Opcode = IsPre ? AArch64::LDRHpre : AArch64::LDRHpost; } else if (VT == MVT::f32) { Opcode = IsPre ? AArch64::LDRSpre : AArch64::LDRSpost; } else if (VT == MVT::f64 || VT.is64BitVector()) { Opcode = IsPre ? AArch64::LDRDpre : AArch64::LDRDpost; } else if (VT.is128BitVector()) { Opcode = IsPre ? AArch64::LDRQpre : AArch64::LDRQpost; } else return false; SDValue Chain = LD->getChain(); SDValue Base = LD->getBasePtr(); ConstantSDNode *OffsetOp = cast(LD->getOffset()); int OffsetVal = (int)OffsetOp->getZExtValue(); SDLoc dl(N); SDValue Offset = CurDAG->getTargetConstant(OffsetVal, dl, MVT::i64); SDValue Ops[] = { Base, Offset, Chain }; SDNode *Res = CurDAG->getMachineNode(Opcode, dl, MVT::i64, DstVT, MVT::Other, Ops); // Transfer memoperands. MachineMemOperand *MemOp = cast(N)->getMemOperand(); CurDAG->setNodeMemRefs(cast(Res), {MemOp}); // Either way, we're replacing the node, so tell the caller that. SDValue LoadedVal = SDValue(Res, 1); if (InsertTo64) { SDValue SubReg = CurDAG->getTargetConstant(AArch64::sub_32, dl, MVT::i32); LoadedVal = SDValue(CurDAG->getMachineNode( AArch64::SUBREG_TO_REG, dl, MVT::i64, CurDAG->getTargetConstant(0, dl, MVT::i64), LoadedVal, SubReg), 0); } ReplaceUses(SDValue(N, 0), LoadedVal); ReplaceUses(SDValue(N, 1), SDValue(Res, 0)); ReplaceUses(SDValue(N, 2), SDValue(Res, 2)); CurDAG->RemoveDeadNode(N); return true; } void AArch64DAGToDAGISel::SelectLoad(SDNode *N, unsigned NumVecs, unsigned Opc, unsigned SubRegIdx) { SDLoc dl(N); EVT VT = N->getValueType(0); SDValue Chain = N->getOperand(0); SDValue Ops[] = {N->getOperand(2), // Mem operand; Chain}; const EVT ResTys[] = {MVT::Untyped, MVT::Other}; SDNode *Ld = CurDAG->getMachineNode(Opc, dl, ResTys, Ops); SDValue SuperReg = SDValue(Ld, 0); for (unsigned i = 0; i < NumVecs; ++i) ReplaceUses(SDValue(N, i), CurDAG->getTargetExtractSubreg(SubRegIdx + i, dl, VT, SuperReg)); ReplaceUses(SDValue(N, NumVecs), SDValue(Ld, 1)); // Transfer memoperands. In the case of AArch64::LD64B, there won't be one, // because it's too simple to have needed special treatment during lowering. if (auto *MemIntr = dyn_cast(N)) { MachineMemOperand *MemOp = MemIntr->getMemOperand(); CurDAG->setNodeMemRefs(cast(Ld), {MemOp}); } CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectPostLoad(SDNode *N, unsigned NumVecs, unsigned Opc, unsigned SubRegIdx) { SDLoc dl(N); EVT VT = N->getValueType(0); SDValue Chain = N->getOperand(0); SDValue Ops[] = {N->getOperand(1), // Mem operand N->getOperand(2), // Incremental Chain}; const EVT ResTys[] = {MVT::i64, // Type of the write back register MVT::Untyped, MVT::Other}; SDNode *Ld = CurDAG->getMachineNode(Opc, dl, ResTys, Ops); // Update uses of write back register ReplaceUses(SDValue(N, NumVecs), SDValue(Ld, 0)); // Update uses of vector list SDValue SuperReg = SDValue(Ld, 1); if (NumVecs == 1) ReplaceUses(SDValue(N, 0), SuperReg); else for (unsigned i = 0; i < NumVecs; ++i) ReplaceUses(SDValue(N, i), CurDAG->getTargetExtractSubreg(SubRegIdx + i, dl, VT, SuperReg)); // Update the chain ReplaceUses(SDValue(N, NumVecs + 1), SDValue(Ld, 2)); CurDAG->RemoveDeadNode(N); } /// Optimize \param OldBase and \param OldOffset selecting the best addressing /// mode. Returns a tuple consisting of an Opcode, an SDValue representing the /// new Base and an SDValue representing the new offset. std::tuple AArch64DAGToDAGISel::findAddrModeSVELoadStore(SDNode *N, unsigned Opc_rr, unsigned Opc_ri, const SDValue &OldBase, const SDValue &OldOffset, unsigned Scale) { SDValue NewBase = OldBase; SDValue NewOffset = OldOffset; // Detect a possible Reg+Imm addressing mode. const bool IsRegImm = SelectAddrModeIndexedSVE( N, OldBase, NewBase, NewOffset); // Detect a possible reg+reg addressing mode, but only if we haven't already // detected a Reg+Imm one. const bool IsRegReg = !IsRegImm && SelectSVERegRegAddrMode(OldBase, Scale, NewBase, NewOffset); // Select the instruction. return std::make_tuple(IsRegReg ? Opc_rr : Opc_ri, NewBase, NewOffset); } enum class SelectTypeKind { Int1 = 0, Int = 1, FP = 2, AnyType = 3, }; /// This function selects an opcode from a list of opcodes, which is /// expected to be the opcode for { 8-bit, 16-bit, 32-bit, 64-bit } /// element types, in this order. template static unsigned SelectOpcodeFromVT(EVT VT, ArrayRef Opcodes) { // Only match scalable vector VTs if (!VT.isScalableVector()) return 0; EVT EltVT = VT.getVectorElementType(); switch (Kind) { case SelectTypeKind::AnyType: break; case SelectTypeKind::Int: if (EltVT != MVT::i8 && EltVT != MVT::i16 && EltVT != MVT::i32 && EltVT != MVT::i64) return 0; break; case SelectTypeKind::Int1: if (EltVT != MVT::i1) return 0; break; case SelectTypeKind::FP: if (EltVT != MVT::f16 && EltVT != MVT::f32 && EltVT != MVT::f64) return 0; break; } unsigned Offset; switch (VT.getVectorMinNumElements()) { case 16: // 8-bit Offset = 0; break; case 8: // 16-bit Offset = 1; break; case 4: // 32-bit Offset = 2; break; case 2: // 64-bit Offset = 3; break; default: return 0; } return (Opcodes.size() <= Offset) ? 0 : Opcodes[Offset]; } // This function is almost identical to SelectWhilePair, but has an // extra check on the range of the immediate operand. // TODO: Merge these two functions together at some point? void AArch64DAGToDAGISel::SelectPExtPair(SDNode *N, unsigned Opc) { // Immediate can be either 0 or 1. if (ConstantSDNode *Imm = dyn_cast(N->getOperand(2))) if (Imm->getZExtValue() > 1) return; SDLoc DL(N); EVT VT = N->getValueType(0); SDValue Ops[] = {N->getOperand(1), N->getOperand(2)}; SDNode *WhilePair = CurDAG->getMachineNode(Opc, DL, MVT::Untyped, Ops); SDValue SuperReg = SDValue(WhilePair, 0); for (unsigned I = 0; I < 2; ++I) ReplaceUses(SDValue(N, I), CurDAG->getTargetExtractSubreg( AArch64::psub0 + I, DL, VT, SuperReg)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectWhilePair(SDNode *N, unsigned Opc) { SDLoc DL(N); EVT VT = N->getValueType(0); SDValue Ops[] = {N->getOperand(1), N->getOperand(2)}; SDNode *WhilePair = CurDAG->getMachineNode(Opc, DL, MVT::Untyped, Ops); SDValue SuperReg = SDValue(WhilePair, 0); for (unsigned I = 0; I < 2; ++I) ReplaceUses(SDValue(N, I), CurDAG->getTargetExtractSubreg( AArch64::psub0 + I, DL, VT, SuperReg)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectCVTIntrinsic(SDNode *N, unsigned NumVecs, unsigned Opcode) { EVT VT = N->getValueType(0); SmallVector Regs(N->op_begin() + 1, N->op_begin() + 1 + NumVecs); SDValue Ops = createZTuple(Regs); SDLoc DL(N); SDNode *Intrinsic = CurDAG->getMachineNode(Opcode, DL, MVT::Untyped, Ops); SDValue SuperReg = SDValue(Intrinsic, 0); for (unsigned i = 0; i < NumVecs; ++i) ReplaceUses(SDValue(N, i), CurDAG->getTargetExtractSubreg( AArch64::zsub0 + i, DL, VT, SuperReg)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectDestructiveMultiIntrinsic(SDNode *N, unsigned NumVecs, bool IsZmMulti, unsigned Opcode) { assert(Opcode != 0 && "Unexpected opcode"); SDLoc DL(N); EVT VT = N->getValueType(0); auto GetMultiVecOperand = [=](unsigned StartIdx) { SmallVector Regs(N->op_begin() + StartIdx, N->op_begin() + StartIdx + NumVecs); return createZMulTuple(Regs); }; SDValue Zdn = GetMultiVecOperand(1); SDValue Zm; if (IsZmMulti) Zm = GetMultiVecOperand(NumVecs + 1); else Zm = N->getOperand(NumVecs + 1); SDNode *Intrinsic = CurDAG->getMachineNode(Opcode, DL, MVT::Untyped, Zdn, Zm); SDValue SuperReg = SDValue(Intrinsic, 0); for (unsigned i = 0; i < NumVecs; ++i) ReplaceUses(SDValue(N, i), CurDAG->getTargetExtractSubreg( AArch64::zsub0 + i, DL, VT, SuperReg)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectPredicatedLoad(SDNode *N, unsigned NumVecs, unsigned Scale, unsigned Opc_ri, unsigned Opc_rr, bool IsIntr) { assert(Scale < 4 && "Invalid scaling value."); SDLoc DL(N); EVT VT = N->getValueType(0); SDValue Chain = N->getOperand(0); // Optimize addressing mode. SDValue Base, Offset; unsigned Opc; std::tie(Opc, Base, Offset) = findAddrModeSVELoadStore( N, Opc_rr, Opc_ri, N->getOperand(IsIntr ? 3 : 2), CurDAG->getTargetConstant(0, DL, MVT::i64), Scale); SDValue Ops[] = {N->getOperand(IsIntr ? 2 : 1), // Predicate Base, // Memory operand Offset, Chain}; const EVT ResTys[] = {MVT::Untyped, MVT::Other}; SDNode *Load = CurDAG->getMachineNode(Opc, DL, ResTys, Ops); SDValue SuperReg = SDValue(Load, 0); for (unsigned i = 0; i < NumVecs; ++i) ReplaceUses(SDValue(N, i), CurDAG->getTargetExtractSubreg( AArch64::zsub0 + i, DL, VT, SuperReg)); // Copy chain unsigned ChainIdx = NumVecs; ReplaceUses(SDValue(N, ChainIdx), SDValue(Load, 1)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectFrintFromVT(SDNode *N, unsigned NumVecs, unsigned Opcode) { if (N->getValueType(0) != MVT::nxv4f32) return; SelectUnaryMultiIntrinsic(N, NumVecs, true, Opcode); } void AArch64DAGToDAGISel::SelectClamp(SDNode *N, unsigned NumVecs, unsigned Op) { SDLoc DL(N); EVT VT = N->getValueType(0); SmallVector Regs(N->op_begin() + 1, N->op_begin() + 1 + NumVecs); SDValue Zd = createZMulTuple(Regs); SDValue Zn = N->getOperand(1 + NumVecs); SDValue Zm = N->getOperand(2 + NumVecs); SDValue Ops[] = {Zd, Zn, Zm}; SDNode *Intrinsic = CurDAG->getMachineNode(Op, DL, MVT::Untyped, Ops); SDValue SuperReg = SDValue(Intrinsic, 0); for (unsigned i = 0; i < NumVecs; ++i) ReplaceUses(SDValue(N, i), CurDAG->getTargetExtractSubreg( AArch64::zsub0 + i, DL, VT, SuperReg)); CurDAG->RemoveDeadNode(N); } bool SelectSMETile(unsigned &BaseReg, unsigned TileNum) { switch (BaseReg) { default: return false; case AArch64::ZA: case AArch64::ZAB0: if (TileNum == 0) break; return false; case AArch64::ZAH0: if (TileNum <= 1) break; return false; case AArch64::ZAS0: if (TileNum <= 3) break; return false; case AArch64::ZAD0: if (TileNum <= 7) break; return false; } BaseReg += TileNum; return true; } template void AArch64DAGToDAGISel::SelectMultiVectorMove(SDNode *N, unsigned NumVecs, unsigned BaseReg, unsigned Op) { unsigned TileNum = 0; if (BaseReg != AArch64::ZA) TileNum = cast(N->getOperand(2))->getZExtValue(); if (!SelectSMETile(BaseReg, TileNum)) return; SDValue SliceBase, Base, Offset; if (BaseReg == AArch64::ZA) SliceBase = N->getOperand(2); else SliceBase = N->getOperand(3); if (!SelectSMETileSlice(SliceBase, MaxIdx, Base, Offset, Scale)) return; SDLoc DL(N); SDValue SubReg = CurDAG->getRegister(BaseReg, MVT::Other); SDValue Ops[] = {SubReg, Base, Offset, /*Chain*/ N->getOperand(0)}; SDNode *Mov = CurDAG->getMachineNode(Op, DL, {MVT::Untyped, MVT::Other}, Ops); EVT VT = N->getValueType(0); for (unsigned I = 0; I < NumVecs; ++I) ReplaceUses(SDValue(N, I), CurDAG->getTargetExtractSubreg(AArch64::zsub0 + I, DL, VT, SDValue(Mov, 0))); // Copy chain unsigned ChainIdx = NumVecs; ReplaceUses(SDValue(N, ChainIdx), SDValue(Mov, 1)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectUnaryMultiIntrinsic(SDNode *N, unsigned NumOutVecs, bool IsTupleInput, unsigned Opc) { SDLoc DL(N); EVT VT = N->getValueType(0); unsigned NumInVecs = N->getNumOperands() - 1; SmallVector Ops; if (IsTupleInput) { assert((NumInVecs == 2 || NumInVecs == 4) && "Don't know how to handle multi-register input!"); SmallVector Regs(N->op_begin() + 1, N->op_begin() + 1 + NumInVecs); Ops.push_back(createZMulTuple(Regs)); } else { // All intrinsic nodes have the ID as the first operand, hence the "1 + I". for (unsigned I = 0; I < NumInVecs; I++) Ops.push_back(N->getOperand(1 + I)); } SDNode *Res = CurDAG->getMachineNode(Opc, DL, MVT::Untyped, Ops); SDValue SuperReg = SDValue(Res, 0); for (unsigned I = 0; I < NumOutVecs; I++) ReplaceUses(SDValue(N, I), CurDAG->getTargetExtractSubreg( AArch64::zsub0 + I, DL, VT, SuperReg)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectStore(SDNode *N, unsigned NumVecs, unsigned Opc) { SDLoc dl(N); EVT VT = N->getOperand(2)->getValueType(0); // Form a REG_SEQUENCE to force register allocation. bool Is128Bit = VT.getSizeInBits() == 128; SmallVector Regs(N->op_begin() + 2, N->op_begin() + 2 + NumVecs); SDValue RegSeq = Is128Bit ? createQTuple(Regs) : createDTuple(Regs); SDValue Ops[] = {RegSeq, N->getOperand(NumVecs + 2), N->getOperand(0)}; SDNode *St = CurDAG->getMachineNode(Opc, dl, N->getValueType(0), Ops); // Transfer memoperands. MachineMemOperand *MemOp = cast(N)->getMemOperand(); CurDAG->setNodeMemRefs(cast(St), {MemOp}); ReplaceNode(N, St); } void AArch64DAGToDAGISel::SelectPredicatedStore(SDNode *N, unsigned NumVecs, unsigned Scale, unsigned Opc_rr, unsigned Opc_ri) { SDLoc dl(N); // Form a REG_SEQUENCE to force register allocation. SmallVector Regs(N->op_begin() + 2, N->op_begin() + 2 + NumVecs); SDValue RegSeq = createZTuple(Regs); // Optimize addressing mode. unsigned Opc; SDValue Offset, Base; std::tie(Opc, Base, Offset) = findAddrModeSVELoadStore( N, Opc_rr, Opc_ri, N->getOperand(NumVecs + 3), CurDAG->getTargetConstant(0, dl, MVT::i64), Scale); SDValue Ops[] = {RegSeq, N->getOperand(NumVecs + 2), // predicate Base, // address Offset, // offset N->getOperand(0)}; // chain SDNode *St = CurDAG->getMachineNode(Opc, dl, N->getValueType(0), Ops); ReplaceNode(N, St); } bool AArch64DAGToDAGISel::SelectAddrModeFrameIndexSVE(SDValue N, SDValue &Base, SDValue &OffImm) { SDLoc dl(N); const DataLayout &DL = CurDAG->getDataLayout(); const TargetLowering *TLI = getTargetLowering(); // Try to match it for the frame address if (auto FINode = dyn_cast(N)) { int FI = FINode->getIndex(); Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); OffImm = CurDAG->getTargetConstant(0, dl, MVT::i64); return true; } return false; } void AArch64DAGToDAGISel::SelectPostStore(SDNode *N, unsigned NumVecs, unsigned Opc) { SDLoc dl(N); EVT VT = N->getOperand(2)->getValueType(0); const EVT ResTys[] = {MVT::i64, // Type of the write back register MVT::Other}; // Type for the Chain // Form a REG_SEQUENCE to force register allocation. bool Is128Bit = VT.getSizeInBits() == 128; SmallVector Regs(N->op_begin() + 1, N->op_begin() + 1 + NumVecs); SDValue RegSeq = Is128Bit ? createQTuple(Regs) : createDTuple(Regs); SDValue Ops[] = {RegSeq, N->getOperand(NumVecs + 1), // base register N->getOperand(NumVecs + 2), // Incremental N->getOperand(0)}; // Chain SDNode *St = CurDAG->getMachineNode(Opc, dl, ResTys, Ops); ReplaceNode(N, St); } namespace { /// WidenVector - Given a value in the V64 register class, produce the /// equivalent value in the V128 register class. class WidenVector { SelectionDAG &DAG; public: WidenVector(SelectionDAG &DAG) : DAG(DAG) {} SDValue operator()(SDValue V64Reg) { EVT VT = V64Reg.getValueType(); unsigned NarrowSize = VT.getVectorNumElements(); MVT EltTy = VT.getVectorElementType().getSimpleVT(); MVT WideTy = MVT::getVectorVT(EltTy, 2 * NarrowSize); SDLoc DL(V64Reg); SDValue Undef = SDValue(DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF, DL, WideTy), 0); return DAG.getTargetInsertSubreg(AArch64::dsub, DL, WideTy, Undef, V64Reg); } }; } // namespace /// NarrowVector - Given a value in the V128 register class, produce the /// equivalent value in the V64 register class. static SDValue NarrowVector(SDValue V128Reg, SelectionDAG &DAG) { EVT VT = V128Reg.getValueType(); unsigned WideSize = VT.getVectorNumElements(); MVT EltTy = VT.getVectorElementType().getSimpleVT(); MVT NarrowTy = MVT::getVectorVT(EltTy, WideSize / 2); return DAG.getTargetExtractSubreg(AArch64::dsub, SDLoc(V128Reg), NarrowTy, V128Reg); } void AArch64DAGToDAGISel::SelectLoadLane(SDNode *N, unsigned NumVecs, unsigned Opc) { SDLoc dl(N); EVT VT = N->getValueType(0); bool Narrow = VT.getSizeInBits() == 64; // Form a REG_SEQUENCE to force register allocation. SmallVector Regs(N->op_begin() + 2, N->op_begin() + 2 + NumVecs); if (Narrow) transform(Regs, Regs.begin(), WidenVector(*CurDAG)); SDValue RegSeq = createQTuple(Regs); const EVT ResTys[] = {MVT::Untyped, MVT::Other}; unsigned LaneNo = cast(N->getOperand(NumVecs + 2))->getZExtValue(); SDValue Ops[] = {RegSeq, CurDAG->getTargetConstant(LaneNo, dl, MVT::i64), N->getOperand(NumVecs + 3), N->getOperand(0)}; SDNode *Ld = CurDAG->getMachineNode(Opc, dl, ResTys, Ops); SDValue SuperReg = SDValue(Ld, 0); EVT WideVT = RegSeq.getOperand(1)->getValueType(0); static const unsigned QSubs[] = { AArch64::qsub0, AArch64::qsub1, AArch64::qsub2, AArch64::qsub3 }; for (unsigned i = 0; i < NumVecs; ++i) { SDValue NV = CurDAG->getTargetExtractSubreg(QSubs[i], dl, WideVT, SuperReg); if (Narrow) NV = NarrowVector(NV, *CurDAG); ReplaceUses(SDValue(N, i), NV); } ReplaceUses(SDValue(N, NumVecs), SDValue(Ld, 1)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectPostLoadLane(SDNode *N, unsigned NumVecs, unsigned Opc) { SDLoc dl(N); EVT VT = N->getValueType(0); bool Narrow = VT.getSizeInBits() == 64; // Form a REG_SEQUENCE to force register allocation. SmallVector Regs(N->op_begin() + 1, N->op_begin() + 1 + NumVecs); if (Narrow) transform(Regs, Regs.begin(), WidenVector(*CurDAG)); SDValue RegSeq = createQTuple(Regs); const EVT ResTys[] = {MVT::i64, // Type of the write back register RegSeq->getValueType(0), MVT::Other}; unsigned LaneNo = cast(N->getOperand(NumVecs + 1))->getZExtValue(); SDValue Ops[] = {RegSeq, CurDAG->getTargetConstant(LaneNo, dl, MVT::i64), // Lane Number N->getOperand(NumVecs + 2), // Base register N->getOperand(NumVecs + 3), // Incremental N->getOperand(0)}; SDNode *Ld = CurDAG->getMachineNode(Opc, dl, ResTys, Ops); // Update uses of the write back register ReplaceUses(SDValue(N, NumVecs), SDValue(Ld, 0)); // Update uses of the vector list SDValue SuperReg = SDValue(Ld, 1); if (NumVecs == 1) { ReplaceUses(SDValue(N, 0), Narrow ? NarrowVector(SuperReg, *CurDAG) : SuperReg); } else { EVT WideVT = RegSeq.getOperand(1)->getValueType(0); static const unsigned QSubs[] = { AArch64::qsub0, AArch64::qsub1, AArch64::qsub2, AArch64::qsub3 }; for (unsigned i = 0; i < NumVecs; ++i) { SDValue NV = CurDAG->getTargetExtractSubreg(QSubs[i], dl, WideVT, SuperReg); if (Narrow) NV = NarrowVector(NV, *CurDAG); ReplaceUses(SDValue(N, i), NV); } } // Update the Chain ReplaceUses(SDValue(N, NumVecs + 1), SDValue(Ld, 2)); CurDAG->RemoveDeadNode(N); } void AArch64DAGToDAGISel::SelectStoreLane(SDNode *N, unsigned NumVecs, unsigned Opc) { SDLoc dl(N); EVT VT = N->getOperand(2)->getValueType(0); bool Narrow = VT.getSizeInBits() == 64; // Form a REG_SEQUENCE to force register allocation. SmallVector Regs(N->op_begin() + 2, N->op_begin() + 2 + NumVecs); if (Narrow) transform(Regs, Regs.begin(), WidenVector(*CurDAG)); SDValue RegSeq = createQTuple(Regs); unsigned LaneNo = cast(N->getOperand(NumVecs + 2))->getZExtValue(); SDValue Ops[] = {RegSeq, CurDAG->getTargetConstant(LaneNo, dl, MVT::i64), N->getOperand(NumVecs + 3), N->getOperand(0)}; SDNode *St = CurDAG->getMachineNode(Opc, dl, MVT::Other, Ops); // Transfer memoperands. MachineMemOperand *MemOp = cast(N)->getMemOperand(); CurDAG->setNodeMemRefs(cast(St), {MemOp}); ReplaceNode(N, St); } void AArch64DAGToDAGISel::SelectPostStoreLane(SDNode *N, unsigned NumVecs, unsigned Opc) { SDLoc dl(N); EVT VT = N->getOperand(2)->getValueType(0); bool Narrow = VT.getSizeInBits() == 64; // Form a REG_SEQUENCE to force register allocation. SmallVector Regs(N->op_begin() + 1, N->op_begin() + 1 + NumVecs); if (Narrow) transform(Regs, Regs.begin(), WidenVector(*CurDAG)); SDValue RegSeq = createQTuple(Regs); const EVT ResTys[] = {MVT::i64, // Type of the write back register MVT::Other}; unsigned LaneNo = cast(N->getOperand(NumVecs + 1))->getZExtValue(); SDValue Ops[] = {RegSeq, CurDAG->getTargetConstant(LaneNo, dl, MVT::i64), N->getOperand(NumVecs + 2), // Base Register N->getOperand(NumVecs + 3), // Incremental N->getOperand(0)}; SDNode *St = CurDAG->getMachineNode(Opc, dl, ResTys, Ops); // Transfer memoperands. MachineMemOperand *MemOp = cast(N)->getMemOperand(); CurDAG->setNodeMemRefs(cast(St), {MemOp}); ReplaceNode(N, St); } static bool isBitfieldExtractOpFromAnd(SelectionDAG *CurDAG, SDNode *N, unsigned &Opc, SDValue &Opd0, unsigned &LSB, unsigned &MSB, unsigned NumberOfIgnoredLowBits, bool BiggerPattern) { assert(N->getOpcode() == ISD::AND && "N must be a AND operation to call this function"); EVT VT = N->getValueType(0); // Here we can test the type of VT and return false when the type does not // match, but since it is done prior to that call in the current context // we turned that into an assert to avoid redundant code. assert((VT == MVT::i32 || VT == MVT::i64) && "Type checking must have been done before calling this function"); // FIXME: simplify-demanded-bits in DAGCombine will probably have // changed the AND node to a 32-bit mask operation. We'll have to // undo that as part of the transform here if we want to catch all // the opportunities. // Currently the NumberOfIgnoredLowBits argument helps to recover // from these situations when matching bigger pattern (bitfield insert). // For unsigned extracts, check for a shift right and mask uint64_t AndImm = 0; if (!isOpcWithIntImmediate(N, ISD::AND, AndImm)) return false; const SDNode *Op0 = N->getOperand(0).getNode(); // Because of simplify-demanded-bits in DAGCombine, the mask may have been // simplified. Try to undo that AndImm |= maskTrailingOnes(NumberOfIgnoredLowBits); // The immediate is a mask of the low bits iff imm & (imm+1) == 0 if (AndImm & (AndImm + 1)) return false; bool ClampMSB = false; uint64_t SrlImm = 0; // Handle the SRL + ANY_EXTEND case. if (VT == MVT::i64 && Op0->getOpcode() == ISD::ANY_EXTEND && isOpcWithIntImmediate(Op0->getOperand(0).getNode(), ISD::SRL, SrlImm)) { // Extend the incoming operand of the SRL to 64-bit. Opd0 = Widen(CurDAG, Op0->getOperand(0).getOperand(0)); // Make sure to clamp the MSB so that we preserve the semantics of the // original operations. ClampMSB = true; } else if (VT == MVT::i32 && Op0->getOpcode() == ISD::TRUNCATE && isOpcWithIntImmediate(Op0->getOperand(0).getNode(), ISD::SRL, SrlImm)) { // If the shift result was truncated, we can still combine them. Opd0 = Op0->getOperand(0).getOperand(0); // Use the type of SRL node. VT = Opd0->getValueType(0); } else if (isOpcWithIntImmediate(Op0, ISD::SRL, SrlImm)) { Opd0 = Op0->getOperand(0); ClampMSB = (VT == MVT::i32); } else if (BiggerPattern) { // Let's pretend a 0 shift right has been performed. // The resulting code will be at least as good as the original one // plus it may expose more opportunities for bitfield insert pattern. // FIXME: Currently we limit this to the bigger pattern, because // some optimizations expect AND and not UBFM. Opd0 = N->getOperand(0); } else return false; // Bail out on large immediates. This happens when no proper // combining/constant folding was performed. if (!BiggerPattern && (SrlImm <= 0 || SrlImm >= VT.getSizeInBits())) { LLVM_DEBUG( (dbgs() << N << ": Found large shift immediate, this should not happen\n")); return false; } LSB = SrlImm; MSB = SrlImm + (VT == MVT::i32 ? llvm::countr_one(AndImm) : llvm::countr_one(AndImm)) - 1; if (ClampMSB) // Since we're moving the extend before the right shift operation, we need // to clamp the MSB to make sure we don't shift in undefined bits instead of // the zeros which would get shifted in with the original right shift // operation. MSB = MSB > 31 ? 31 : MSB; Opc = VT == MVT::i32 ? AArch64::UBFMWri : AArch64::UBFMXri; return true; } static bool isBitfieldExtractOpFromSExtInReg(SDNode *N, unsigned &Opc, SDValue &Opd0, unsigned &Immr, unsigned &Imms) { assert(N->getOpcode() == ISD::SIGN_EXTEND_INREG); EVT VT = N->getValueType(0); unsigned BitWidth = VT.getSizeInBits(); assert((VT == MVT::i32 || VT == MVT::i64) && "Type checking must have been done before calling this function"); SDValue Op = N->getOperand(0); if (Op->getOpcode() == ISD::TRUNCATE) { Op = Op->getOperand(0); VT = Op->getValueType(0); BitWidth = VT.getSizeInBits(); } uint64_t ShiftImm; if (!isOpcWithIntImmediate(Op.getNode(), ISD::SRL, ShiftImm) && !isOpcWithIntImmediate(Op.getNode(), ISD::SRA, ShiftImm)) return false; unsigned Width = cast(N->getOperand(1))->getVT().getSizeInBits(); if (ShiftImm + Width > BitWidth) return false; Opc = (VT == MVT::i32) ? AArch64::SBFMWri : AArch64::SBFMXri; Opd0 = Op.getOperand(0); Immr = ShiftImm; Imms = ShiftImm + Width - 1; return true; } static bool isSeveralBitsExtractOpFromShr(SDNode *N, unsigned &Opc, SDValue &Opd0, unsigned &LSB, unsigned &MSB) { // We are looking for the following pattern which basically extracts several // continuous bits from the source value and places it from the LSB of the // destination value, all other bits of the destination value or set to zero: // // Value2 = AND Value, MaskImm // SRL Value2, ShiftImm // // with MaskImm >> ShiftImm to search for the bit width. // // This gets selected into a single UBFM: // // UBFM Value, ShiftImm, Log2_64(MaskImm) // if (N->getOpcode() != ISD::SRL) return false; uint64_t AndMask = 0; if (!isOpcWithIntImmediate(N->getOperand(0).getNode(), ISD::AND, AndMask)) return false; Opd0 = N->getOperand(0).getOperand(0); uint64_t SrlImm = 0; if (!isIntImmediate(N->getOperand(1), SrlImm)) return false; // Check whether we really have several bits extract here. if (!isMask_64(AndMask >> SrlImm)) return false; Opc = N->getValueType(0) == MVT::i32 ? AArch64::UBFMWri : AArch64::UBFMXri; LSB = SrlImm; MSB = llvm::Log2_64(AndMask); return true; } static bool isBitfieldExtractOpFromShr(SDNode *N, unsigned &Opc, SDValue &Opd0, unsigned &Immr, unsigned &Imms, bool BiggerPattern) { assert((N->getOpcode() == ISD::SRA || N->getOpcode() == ISD::SRL) && "N must be a SHR/SRA operation to call this function"); EVT VT = N->getValueType(0); // Here we can test the type of VT and return false when the type does not // match, but since it is done prior to that call in the current context // we turned that into an assert to avoid redundant code. assert((VT == MVT::i32 || VT == MVT::i64) && "Type checking must have been done before calling this function"); // Check for AND + SRL doing several bits extract. if (isSeveralBitsExtractOpFromShr(N, Opc, Opd0, Immr, Imms)) return true; // We're looking for a shift of a shift. uint64_t ShlImm = 0; uint64_t TruncBits = 0; if (isOpcWithIntImmediate(N->getOperand(0).getNode(), ISD::SHL, ShlImm)) { Opd0 = N->getOperand(0).getOperand(0); } else if (VT == MVT::i32 && N->getOpcode() == ISD::SRL && N->getOperand(0).getNode()->getOpcode() == ISD::TRUNCATE) { // We are looking for a shift of truncate. Truncate from i64 to i32 could // be considered as setting high 32 bits as zero. Our strategy here is to // always generate 64bit UBFM. This consistency will help the CSE pass // later find more redundancy. Opd0 = N->getOperand(0).getOperand(0); TruncBits = Opd0->getValueType(0).getSizeInBits() - VT.getSizeInBits(); VT = Opd0.getValueType(); assert(VT == MVT::i64 && "the promoted type should be i64"); } else if (BiggerPattern) { // Let's pretend a 0 shift left has been performed. // FIXME: Currently we limit this to the bigger pattern case, // because some optimizations expect AND and not UBFM Opd0 = N->getOperand(0); } else return false; // Missing combines/constant folding may have left us with strange // constants. if (ShlImm >= VT.getSizeInBits()) { LLVM_DEBUG( (dbgs() << N << ": Found large shift immediate, this should not happen\n")); return false; } uint64_t SrlImm = 0; if (!isIntImmediate(N->getOperand(1), SrlImm)) return false; assert(SrlImm > 0 && SrlImm < VT.getSizeInBits() && "bad amount in shift node!"); int immr = SrlImm - ShlImm; Immr = immr < 0 ? immr + VT.getSizeInBits() : immr; Imms = VT.getSizeInBits() - ShlImm - TruncBits - 1; // SRA requires a signed extraction if (VT == MVT::i32) Opc = N->getOpcode() == ISD::SRA ? AArch64::SBFMWri : AArch64::UBFMWri; else Opc = N->getOpcode() == ISD::SRA ? AArch64::SBFMXri : AArch64::UBFMXri; return true; } bool AArch64DAGToDAGISel::tryBitfieldExtractOpFromSExt(SDNode *N) { assert(N->getOpcode() == ISD::SIGN_EXTEND); EVT VT = N->getValueType(0); EVT NarrowVT = N->getOperand(0)->getValueType(0); if (VT != MVT::i64 || NarrowVT != MVT::i32) return false; uint64_t ShiftImm; SDValue Op = N->getOperand(0); if (!isOpcWithIntImmediate(Op.getNode(), ISD::SRA, ShiftImm)) return false; SDLoc dl(N); // Extend the incoming operand of the shift to 64-bits. SDValue Opd0 = Widen(CurDAG, Op.getOperand(0)); unsigned Immr = ShiftImm; unsigned Imms = NarrowVT.getSizeInBits() - 1; SDValue Ops[] = {Opd0, CurDAG->getTargetConstant(Immr, dl, VT), CurDAG->getTargetConstant(Imms, dl, VT)}; CurDAG->SelectNodeTo(N, AArch64::SBFMXri, VT, Ops); return true; } /// Try to form fcvtl2 instructions from a floating-point extend of a high-half /// extract of a subvector. bool AArch64DAGToDAGISel::tryHighFPExt(SDNode *N) { assert(N->getOpcode() == ISD::FP_EXTEND); // There are 2 forms of fcvtl2 - extend to double or extend to float. SDValue Extract = N->getOperand(0); EVT VT = N->getValueType(0); EVT NarrowVT = Extract.getValueType(); if ((VT != MVT::v2f64 || NarrowVT != MVT::v2f32) && (VT != MVT::v4f32 || NarrowVT != MVT::v4f16)) return false; // Optionally look past a bitcast. Extract = peekThroughBitcasts(Extract); if (Extract.getOpcode() != ISD::EXTRACT_SUBVECTOR) return false; // Match extract from start of high half index. // Example: v8i16 -> v4i16 means the extract must begin at index 4. unsigned ExtractIndex = Extract.getConstantOperandVal(1); if (ExtractIndex != Extract.getValueType().getVectorNumElements()) return false; auto Opcode = VT == MVT::v2f64 ? AArch64::FCVTLv4i32 : AArch64::FCVTLv8i16; CurDAG->SelectNodeTo(N, Opcode, VT, Extract.getOperand(0)); return true; } static bool isBitfieldExtractOp(SelectionDAG *CurDAG, SDNode *N, unsigned &Opc, SDValue &Opd0, unsigned &Immr, unsigned &Imms, unsigned NumberOfIgnoredLowBits = 0, bool BiggerPattern = false) { if (N->getValueType(0) != MVT::i32 && N->getValueType(0) != MVT::i64) return false; switch (N->getOpcode()) { default: if (!N->isMachineOpcode()) return false; break; case ISD::AND: return isBitfieldExtractOpFromAnd(CurDAG, N, Opc, Opd0, Immr, Imms, NumberOfIgnoredLowBits, BiggerPattern); case ISD::SRL: case ISD::SRA: return isBitfieldExtractOpFromShr(N, Opc, Opd0, Immr, Imms, BiggerPattern); case ISD::SIGN_EXTEND_INREG: return isBitfieldExtractOpFromSExtInReg(N, Opc, Opd0, Immr, Imms); } unsigned NOpc = N->getMachineOpcode(); switch (NOpc) { default: return false; case AArch64::SBFMWri: case AArch64::UBFMWri: case AArch64::SBFMXri: case AArch64::UBFMXri: Opc = NOpc; Opd0 = N->getOperand(0); Immr = cast(N->getOperand(1).getNode())->getZExtValue(); Imms = cast(N->getOperand(2).getNode())->getZExtValue(); return true; } // Unreachable return false; } bool AArch64DAGToDAGISel::tryBitfieldExtractOp(SDNode *N) { unsigned Opc, Immr, Imms; SDValue Opd0; if (!isBitfieldExtractOp(CurDAG, N, Opc, Opd0, Immr, Imms)) return false; EVT VT = N->getValueType(0); SDLoc dl(N); // If the bit extract operation is 64bit but the original type is 32bit, we // need to add one EXTRACT_SUBREG. if ((Opc == AArch64::SBFMXri || Opc == AArch64::UBFMXri) && VT == MVT::i32) { SDValue Ops64[] = {Opd0, CurDAG->getTargetConstant(Immr, dl, MVT::i64), CurDAG->getTargetConstant(Imms, dl, MVT::i64)}; SDNode *BFM = CurDAG->getMachineNode(Opc, dl, MVT::i64, Ops64); SDValue Inner = CurDAG->getTargetExtractSubreg(AArch64::sub_32, dl, MVT::i32, SDValue(BFM, 0)); ReplaceNode(N, Inner.getNode()); return true; } SDValue Ops[] = {Opd0, CurDAG->getTargetConstant(Immr, dl, VT), CurDAG->getTargetConstant(Imms, dl, VT)}; CurDAG->SelectNodeTo(N, Opc, VT, Ops); return true; } /// Does DstMask form a complementary pair with the mask provided by /// BitsToBeInserted, suitable for use in a BFI instruction. Roughly speaking, /// this asks whether DstMask zeroes precisely those bits that will be set by /// the other half. static bool isBitfieldDstMask(uint64_t DstMask, const APInt &BitsToBeInserted, unsigned NumberOfIgnoredHighBits, EVT VT) { assert((VT == MVT::i32 || VT == MVT::i64) && "i32 or i64 mask type expected!"); unsigned BitWidth = VT.getSizeInBits() - NumberOfIgnoredHighBits; APInt SignificantDstMask = APInt(BitWidth, DstMask); APInt SignificantBitsToBeInserted = BitsToBeInserted.zextOrTrunc(BitWidth); return (SignificantDstMask & SignificantBitsToBeInserted) == 0 && (SignificantDstMask | SignificantBitsToBeInserted).isAllOnes(); } // Look for bits that will be useful for later uses. // A bit is consider useless as soon as it is dropped and never used // before it as been dropped. // E.g., looking for useful bit of x // 1. y = x & 0x7 // 2. z = y >> 2 // After #1, x useful bits are 0x7, then the useful bits of x, live through // y. // After #2, the useful bits of x are 0x4. // However, if x is used on an unpredicatable instruction, then all its bits // are useful. // E.g. // 1. y = x & 0x7 // 2. z = y >> 2 // 3. str x, [@x] static void getUsefulBits(SDValue Op, APInt &UsefulBits, unsigned Depth = 0); static void getUsefulBitsFromAndWithImmediate(SDValue Op, APInt &UsefulBits, unsigned Depth) { uint64_t Imm = cast(Op.getOperand(1).getNode())->getZExtValue(); Imm = AArch64_AM::decodeLogicalImmediate(Imm, UsefulBits.getBitWidth()); UsefulBits &= APInt(UsefulBits.getBitWidth(), Imm); getUsefulBits(Op, UsefulBits, Depth + 1); } static void getUsefulBitsFromBitfieldMoveOpd(SDValue Op, APInt &UsefulBits, uint64_t Imm, uint64_t MSB, unsigned Depth) { // inherit the bitwidth value APInt OpUsefulBits(UsefulBits); OpUsefulBits = 1; if (MSB >= Imm) { OpUsefulBits <<= MSB - Imm + 1; --OpUsefulBits; // The interesting part will be in the lower part of the result getUsefulBits(Op, OpUsefulBits, Depth + 1); // The interesting part was starting at Imm in the argument OpUsefulBits <<= Imm; } else { OpUsefulBits <<= MSB + 1; --OpUsefulBits; // The interesting part will be shifted in the result OpUsefulBits <<= OpUsefulBits.getBitWidth() - Imm; getUsefulBits(Op, OpUsefulBits, Depth + 1); // The interesting part was at zero in the argument OpUsefulBits.lshrInPlace(OpUsefulBits.getBitWidth() - Imm); } UsefulBits &= OpUsefulBits; } static void getUsefulBitsFromUBFM(SDValue Op, APInt &UsefulBits, unsigned Depth) { uint64_t Imm = cast(Op.getOperand(1).getNode())->getZExtValue(); uint64_t MSB = cast(Op.getOperand(2).getNode())->getZExtValue(); getUsefulBitsFromBitfieldMoveOpd(Op, UsefulBits, Imm, MSB, Depth); } static void getUsefulBitsFromOrWithShiftedReg(SDValue Op, APInt &UsefulBits, unsigned Depth) { uint64_t ShiftTypeAndValue = cast(Op.getOperand(2).getNode())->getZExtValue(); APInt Mask(UsefulBits); Mask.clearAllBits(); Mask.flipAllBits(); if (AArch64_AM::getShiftType(ShiftTypeAndValue) == AArch64_AM::LSL) { // Shift Left uint64_t ShiftAmt = AArch64_AM::getShiftValue(ShiftTypeAndValue); Mask <<= ShiftAmt; getUsefulBits(Op, Mask, Depth + 1); Mask.lshrInPlace(ShiftAmt); } else if (AArch64_AM::getShiftType(ShiftTypeAndValue) == AArch64_AM::LSR) { // Shift Right // We do not handle AArch64_AM::ASR, because the sign will change the // number of useful bits uint64_t ShiftAmt = AArch64_AM::getShiftValue(ShiftTypeAndValue); Mask.lshrInPlace(ShiftAmt); getUsefulBits(Op, Mask, Depth + 1); Mask <<= ShiftAmt; } else return; UsefulBits &= Mask; } static void getUsefulBitsFromBFM(SDValue Op, SDValue Orig, APInt &UsefulBits, unsigned Depth) { uint64_t Imm = cast(Op.getOperand(2).getNode())->getZExtValue(); uint64_t MSB = cast(Op.getOperand(3).getNode())->getZExtValue(); APInt OpUsefulBits(UsefulBits); OpUsefulBits = 1; APInt ResultUsefulBits(UsefulBits.getBitWidth(), 0); ResultUsefulBits.flipAllBits(); APInt Mask(UsefulBits.getBitWidth(), 0); getUsefulBits(Op, ResultUsefulBits, Depth + 1); if (MSB >= Imm) { // The instruction is a BFXIL. uint64_t Width = MSB - Imm + 1; uint64_t LSB = Imm; OpUsefulBits <<= Width; --OpUsefulBits; if (Op.getOperand(1) == Orig) { // Copy the low bits from the result to bits starting from LSB. Mask = ResultUsefulBits & OpUsefulBits; Mask <<= LSB; } if (Op.getOperand(0) == Orig) // Bits starting from LSB in the input contribute to the result. Mask |= (ResultUsefulBits & ~OpUsefulBits); } else { // The instruction is a BFI. uint64_t Width = MSB + 1; uint64_t LSB = UsefulBits.getBitWidth() - Imm; OpUsefulBits <<= Width; --OpUsefulBits; OpUsefulBits <<= LSB; if (Op.getOperand(1) == Orig) { // Copy the bits from the result to the zero bits. Mask = ResultUsefulBits & OpUsefulBits; Mask.lshrInPlace(LSB); } if (Op.getOperand(0) == Orig) Mask |= (ResultUsefulBits & ~OpUsefulBits); } UsefulBits &= Mask; } static void getUsefulBitsForUse(SDNode *UserNode, APInt &UsefulBits, SDValue Orig, unsigned Depth) { // Users of this node should have already been instruction selected // FIXME: Can we turn that into an assert? if (!UserNode->isMachineOpcode()) return; switch (UserNode->getMachineOpcode()) { default: return; case AArch64::ANDSWri: case AArch64::ANDSXri: case AArch64::ANDWri: case AArch64::ANDXri: // We increment Depth only when we call the getUsefulBits return getUsefulBitsFromAndWithImmediate(SDValue(UserNode, 0), UsefulBits, Depth); case AArch64::UBFMWri: case AArch64::UBFMXri: return getUsefulBitsFromUBFM(SDValue(UserNode, 0), UsefulBits, Depth); case AArch64::ORRWrs: case AArch64::ORRXrs: if (UserNode->getOperand(0) != Orig && UserNode->getOperand(1) == Orig) getUsefulBitsFromOrWithShiftedReg(SDValue(UserNode, 0), UsefulBits, Depth); return; case AArch64::BFMWri: case AArch64::BFMXri: return getUsefulBitsFromBFM(SDValue(UserNode, 0), Orig, UsefulBits, Depth); case AArch64::STRBBui: case AArch64::STURBBi: if (UserNode->getOperand(0) != Orig) return; UsefulBits &= APInt(UsefulBits.getBitWidth(), 0xff); return; case AArch64::STRHHui: case AArch64::STURHHi: if (UserNode->getOperand(0) != Orig) return; UsefulBits &= APInt(UsefulBits.getBitWidth(), 0xffff); return; } } static void getUsefulBits(SDValue Op, APInt &UsefulBits, unsigned Depth) { if (Depth >= SelectionDAG::MaxRecursionDepth) return; // Initialize UsefulBits if (!Depth) { unsigned Bitwidth = Op.getScalarValueSizeInBits(); // At the beginning, assume every produced bits is useful UsefulBits = APInt(Bitwidth, 0); UsefulBits.flipAllBits(); } APInt UsersUsefulBits(UsefulBits.getBitWidth(), 0); for (SDNode *Node : Op.getNode()->uses()) { // A use cannot produce useful bits APInt UsefulBitsForUse = APInt(UsefulBits); getUsefulBitsForUse(Node, UsefulBitsForUse, Op, Depth); UsersUsefulBits |= UsefulBitsForUse; } // UsefulBits contains the produced bits that are meaningful for the // current definition, thus a user cannot make a bit meaningful at // this point UsefulBits &= UsersUsefulBits; } /// Create a machine node performing a notional SHL of Op by ShlAmount. If /// ShlAmount is negative, do a (logical) right-shift instead. If ShlAmount is /// 0, return Op unchanged. static SDValue getLeftShift(SelectionDAG *CurDAG, SDValue Op, int ShlAmount) { if (ShlAmount == 0) return Op; EVT VT = Op.getValueType(); SDLoc dl(Op); unsigned BitWidth = VT.getSizeInBits(); unsigned UBFMOpc = BitWidth == 32 ? AArch64::UBFMWri : AArch64::UBFMXri; SDNode *ShiftNode; if (ShlAmount > 0) { // LSL wD, wN, #Amt == UBFM wD, wN, #32-Amt, #31-Amt ShiftNode = CurDAG->getMachineNode( UBFMOpc, dl, VT, Op, CurDAG->getTargetConstant(BitWidth - ShlAmount, dl, VT), CurDAG->getTargetConstant(BitWidth - 1 - ShlAmount, dl, VT)); } else { // LSR wD, wN, #Amt == UBFM wD, wN, #Amt, #32-1 assert(ShlAmount < 0 && "expected right shift"); int ShrAmount = -ShlAmount; ShiftNode = CurDAG->getMachineNode( UBFMOpc, dl, VT, Op, CurDAG->getTargetConstant(ShrAmount, dl, VT), CurDAG->getTargetConstant(BitWidth - 1, dl, VT)); } return SDValue(ShiftNode, 0); } // For bit-field-positioning pattern "(and (shl VAL, N), ShiftedMask)". static bool isBitfieldPositioningOpFromAnd(SelectionDAG *CurDAG, SDValue Op, bool BiggerPattern, const uint64_t NonZeroBits, SDValue &Src, int &DstLSB, int &Width); // For bit-field-positioning pattern "shl VAL, N)". static bool isBitfieldPositioningOpFromShl(SelectionDAG *CurDAG, SDValue Op, bool BiggerPattern, const uint64_t NonZeroBits, SDValue &Src, int &DstLSB, int &Width); /// Does this tree qualify as an attempt to move a bitfield into position, /// essentially "(and (shl VAL, N), Mask)" or (shl VAL, N). static bool isBitfieldPositioningOp(SelectionDAG *CurDAG, SDValue Op, bool BiggerPattern, SDValue &Src, int &DstLSB, int &Width) { EVT VT = Op.getValueType(); unsigned BitWidth = VT.getSizeInBits(); (void)BitWidth; assert(BitWidth == 32 || BitWidth == 64); KnownBits Known = CurDAG->computeKnownBits(Op); // Non-zero in the sense that they're not provably zero, which is the key // point if we want to use this value const uint64_t NonZeroBits = (~Known.Zero).getZExtValue(); if (!isShiftedMask_64(NonZeroBits)) return false; switch (Op.getOpcode()) { default: break; case ISD::AND: return isBitfieldPositioningOpFromAnd(CurDAG, Op, BiggerPattern, NonZeroBits, Src, DstLSB, Width); case ISD::SHL: return isBitfieldPositioningOpFromShl(CurDAG, Op, BiggerPattern, NonZeroBits, Src, DstLSB, Width); } return false; } static bool isBitfieldPositioningOpFromAnd(SelectionDAG *CurDAG, SDValue Op, bool BiggerPattern, const uint64_t NonZeroBits, SDValue &Src, int &DstLSB, int &Width) { assert(isShiftedMask_64(NonZeroBits) && "Caller guaranteed"); EVT VT = Op.getValueType(); assert((VT == MVT::i32 || VT == MVT::i64) && "Caller guarantees VT is one of i32 or i64"); (void)VT; uint64_t AndImm; if (!isOpcWithIntImmediate(Op.getNode(), ISD::AND, AndImm)) return false; // If (~AndImm & NonZeroBits) is not zero at POS, we know that // 1) (AndImm & (1 << POS) == 0) // 2) the result of AND is not zero at POS bit (according to NonZeroBits) // // 1) and 2) don't agree so something must be wrong (e.g., in // 'SelectionDAG::computeKnownBits') assert((~AndImm & NonZeroBits) == 0 && "Something must be wrong (e.g., in SelectionDAG::computeKnownBits)"); SDValue AndOp0 = Op.getOperand(0); uint64_t ShlImm; SDValue ShlOp0; if (isOpcWithIntImmediate(AndOp0.getNode(), ISD::SHL, ShlImm)) { // For pattern "and(shl(val, N), shifted-mask)", 'ShlOp0' is set to 'val'. ShlOp0 = AndOp0.getOperand(0); } else if (VT == MVT::i64 && AndOp0.getOpcode() == ISD::ANY_EXTEND && isOpcWithIntImmediate(AndOp0.getOperand(0).getNode(), ISD::SHL, ShlImm)) { // For pattern "and(any_extend(shl(val, N)), shifted-mask)" // ShlVal == shl(val, N), which is a left shift on a smaller type. SDValue ShlVal = AndOp0.getOperand(0); // Since this is after type legalization and ShlVal is extended to MVT::i64, // expect VT to be MVT::i32. assert((ShlVal.getValueType() == MVT::i32) && "Expect VT to be MVT::i32."); // Widens 'val' to MVT::i64 as the source of bit field positioning. ShlOp0 = Widen(CurDAG, ShlVal.getOperand(0)); } else return false; // For !BiggerPattern, bail out if the AndOp0 has more than one use, since // then we'll end up generating AndOp0+UBFIZ instead of just keeping // AndOp0+AND. if (!BiggerPattern && !AndOp0.hasOneUse()) return false; DstLSB = llvm::countr_zero(NonZeroBits); Width = llvm::countr_one(NonZeroBits >> DstLSB); // Bail out on large Width. This happens when no proper combining / constant // folding was performed. if (Width >= (int)VT.getSizeInBits()) { // If VT is i64, Width > 64 is insensible since NonZeroBits is uint64_t, and // Width == 64 indicates a missed dag-combine from "(and val, AllOnes)" to // "val". // If VT is i32, what Width >= 32 means: // - For "(and (any_extend(shl val, N)), shifted-mask)", the`and` Op // demands at least 'Width' bits (after dag-combiner). This together with // `any_extend` Op (undefined higher bits) indicates missed combination // when lowering the 'and' IR instruction to an machine IR instruction. LLVM_DEBUG( dbgs() << "Found large Width in bit-field-positioning -- this indicates no " "proper combining / constant folding was performed\n"); return false; } // BFI encompasses sufficiently many nodes that it's worth inserting an extra // LSL/LSR if the mask in NonZeroBits doesn't quite match up with the ISD::SHL // amount. BiggerPattern is true when this pattern is being matched for BFI, // BiggerPattern is false when this pattern is being matched for UBFIZ, in // which case it is not profitable to insert an extra shift. if (ShlImm != uint64_t(DstLSB) && !BiggerPattern) return false; Src = getLeftShift(CurDAG, ShlOp0, ShlImm - DstLSB); return true; } // For node (shl (and val, mask), N)), returns true if the node is equivalent to // UBFIZ. static bool isSeveralBitsPositioningOpFromShl(const uint64_t ShlImm, SDValue Op, SDValue &Src, int &DstLSB, int &Width) { // Caller should have verified that N is a left shift with constant shift // amount; asserts that. assert(Op.getOpcode() == ISD::SHL && "Op.getNode() should be a SHL node to call this function"); assert(isIntImmediateEq(Op.getOperand(1), ShlImm) && "Op.getNode() should shift ShlImm to call this function"); uint64_t AndImm = 0; SDValue Op0 = Op.getOperand(0); if (!isOpcWithIntImmediate(Op0.getNode(), ISD::AND, AndImm)) return false; const uint64_t ShiftedAndImm = ((AndImm << ShlImm) >> ShlImm); if (isMask_64(ShiftedAndImm)) { // AndImm is a superset of (AllOnes >> ShlImm); in other words, AndImm // should end with Mask, and could be prefixed with random bits if those // bits are shifted out. // // For example, xyz11111 (with {x,y,z} being 0 or 1) is fine if ShlImm >= 3; // the AND result corresponding to those bits are shifted out, so it's fine // to not extract them. Width = llvm::countr_one(ShiftedAndImm); DstLSB = ShlImm; Src = Op0.getOperand(0); return true; } return false; } static bool isBitfieldPositioningOpFromShl(SelectionDAG *CurDAG, SDValue Op, bool BiggerPattern, const uint64_t NonZeroBits, SDValue &Src, int &DstLSB, int &Width) { assert(isShiftedMask_64(NonZeroBits) && "Caller guaranteed"); EVT VT = Op.getValueType(); assert((VT == MVT::i32 || VT == MVT::i64) && "Caller guarantees that type is i32 or i64"); (void)VT; uint64_t ShlImm; if (!isOpcWithIntImmediate(Op.getNode(), ISD::SHL, ShlImm)) return false; if (!BiggerPattern && !Op.hasOneUse()) return false; if (isSeveralBitsPositioningOpFromShl(ShlImm, Op, Src, DstLSB, Width)) return true; DstLSB = llvm::countr_zero(NonZeroBits); Width = llvm::countr_one(NonZeroBits >> DstLSB); if (ShlImm != uint64_t(DstLSB) && !BiggerPattern) return false; Src = getLeftShift(CurDAG, Op.getOperand(0), ShlImm - DstLSB); return true; } static bool isShiftedMask(uint64_t Mask, EVT VT) { assert(VT == MVT::i32 || VT == MVT::i64); if (VT == MVT::i32) return isShiftedMask_32(Mask); return isShiftedMask_64(Mask); } // Generate a BFI/BFXIL from 'or (and X, MaskImm), OrImm' iff the value being // inserted only sets known zero bits. static bool tryBitfieldInsertOpFromOrAndImm(SDNode *N, SelectionDAG *CurDAG) { assert(N->getOpcode() == ISD::OR && "Expect a OR operation"); EVT VT = N->getValueType(0); if (VT != MVT::i32 && VT != MVT::i64) return false; unsigned BitWidth = VT.getSizeInBits(); uint64_t OrImm; if (!isOpcWithIntImmediate(N, ISD::OR, OrImm)) return false; // Skip this transformation if the ORR immediate can be encoded in the ORR. // Otherwise, we'll trade an AND+ORR for ORR+BFI/BFXIL, which is most likely // performance neutral. if (AArch64_AM::isLogicalImmediate(OrImm, BitWidth)) return false; uint64_t MaskImm; SDValue And = N->getOperand(0); // Must be a single use AND with an immediate operand. if (!And.hasOneUse() || !isOpcWithIntImmediate(And.getNode(), ISD::AND, MaskImm)) return false; // Compute the Known Zero for the AND as this allows us to catch more general // cases than just looking for AND with imm. KnownBits Known = CurDAG->computeKnownBits(And); // Non-zero in the sense that they're not provably zero, which is the key // point if we want to use this value. uint64_t NotKnownZero = (~Known.Zero).getZExtValue(); // The KnownZero mask must be a shifted mask (e.g., 1110..011, 11100..00). if (!isShiftedMask(Known.Zero.getZExtValue(), VT)) return false; // The bits being inserted must only set those bits that are known to be zero. if ((OrImm & NotKnownZero) != 0) { // FIXME: It's okay if the OrImm sets NotKnownZero bits to 1, but we don't // currently handle this case. return false; } // BFI/BFXIL dst, src, #lsb, #width. int LSB = llvm::countr_one(NotKnownZero); int Width = BitWidth - APInt(BitWidth, NotKnownZero).popcount(); // BFI/BFXIL is an alias of BFM, so translate to BFM operands. unsigned ImmR = (BitWidth - LSB) % BitWidth; unsigned ImmS = Width - 1; // If we're creating a BFI instruction avoid cases where we need more // instructions to materialize the BFI constant as compared to the original // ORR. A BFXIL will use the same constant as the original ORR, so the code // should be no worse in this case. bool IsBFI = LSB != 0; uint64_t BFIImm = OrImm >> LSB; if (IsBFI && !AArch64_AM::isLogicalImmediate(BFIImm, BitWidth)) { // We have a BFI instruction and we know the constant can't be materialized // with a ORR-immediate with the zero register. unsigned OrChunks = 0, BFIChunks = 0; for (unsigned Shift = 0; Shift < BitWidth; Shift += 16) { if (((OrImm >> Shift) & 0xFFFF) != 0) ++OrChunks; if (((BFIImm >> Shift) & 0xFFFF) != 0) ++BFIChunks; } if (BFIChunks > OrChunks) return false; } // Materialize the constant to be inserted. SDLoc DL(N); unsigned MOVIOpc = VT == MVT::i32 ? AArch64::MOVi32imm : AArch64::MOVi64imm; SDNode *MOVI = CurDAG->getMachineNode( MOVIOpc, DL, VT, CurDAG->getTargetConstant(BFIImm, DL, VT)); // Create the BFI/BFXIL instruction. SDValue Ops[] = {And.getOperand(0), SDValue(MOVI, 0), CurDAG->getTargetConstant(ImmR, DL, VT), CurDAG->getTargetConstant(ImmS, DL, VT)}; unsigned Opc = (VT == MVT::i32) ? AArch64::BFMWri : AArch64::BFMXri; CurDAG->SelectNodeTo(N, Opc, VT, Ops); return true; } static bool isWorthFoldingIntoOrrWithShift(SDValue Dst, SelectionDAG *CurDAG, SDValue &ShiftedOperand, uint64_t &EncodedShiftImm) { // Avoid folding Dst into ORR-with-shift if Dst has other uses than ORR. if (!Dst.hasOneUse()) return false; EVT VT = Dst.getValueType(); assert((VT == MVT::i32 || VT == MVT::i64) && "Caller should guarantee that VT is one of i32 or i64"); const unsigned SizeInBits = VT.getSizeInBits(); SDLoc DL(Dst.getNode()); uint64_t AndImm, ShlImm; if (isOpcWithIntImmediate(Dst.getNode(), ISD::AND, AndImm) && isShiftedMask_64(AndImm)) { // Avoid transforming 'DstOp0' if it has other uses than the AND node. SDValue DstOp0 = Dst.getOperand(0); if (!DstOp0.hasOneUse()) return false; // An example to illustrate the transformation // From: // lsr x8, x1, #1 // and x8, x8, #0x3f80 // bfxil x8, x1, #0, #7 // To: // and x8, x23, #0x7f // ubfx x9, x23, #8, #7 // orr x23, x8, x9, lsl #7 // // The number of instructions remains the same, but ORR is faster than BFXIL // on many AArch64 processors (or as good as BFXIL if not faster). Besides, // the dependency chain is improved after the transformation. uint64_t SrlImm; if (isOpcWithIntImmediate(DstOp0.getNode(), ISD::SRL, SrlImm)) { uint64_t NumTrailingZeroInShiftedMask = llvm::countr_zero(AndImm); if ((SrlImm + NumTrailingZeroInShiftedMask) < SizeInBits) { unsigned MaskWidth = llvm::countr_one(AndImm >> NumTrailingZeroInShiftedMask); unsigned UBFMOpc = (VT == MVT::i32) ? AArch64::UBFMWri : AArch64::UBFMXri; SDNode *UBFMNode = CurDAG->getMachineNode( UBFMOpc, DL, VT, DstOp0.getOperand(0), CurDAG->getTargetConstant(SrlImm + NumTrailingZeroInShiftedMask, DL, VT), CurDAG->getTargetConstant( SrlImm + NumTrailingZeroInShiftedMask + MaskWidth - 1, DL, VT)); ShiftedOperand = SDValue(UBFMNode, 0); EncodedShiftImm = AArch64_AM::getShifterImm( AArch64_AM::LSL, NumTrailingZeroInShiftedMask); return true; } } return false; } if (isOpcWithIntImmediate(Dst.getNode(), ISD::SHL, ShlImm)) { ShiftedOperand = Dst.getOperand(0); EncodedShiftImm = AArch64_AM::getShifterImm(AArch64_AM::LSL, ShlImm); return true; } uint64_t SrlImm; if (isOpcWithIntImmediate(Dst.getNode(), ISD::SRL, SrlImm)) { ShiftedOperand = Dst.getOperand(0); EncodedShiftImm = AArch64_AM::getShifterImm(AArch64_AM::LSR, SrlImm); return true; } return false; } // Given an 'ISD::OR' node that is going to be selected as BFM, analyze // the operands and select it to AArch64::ORR with shifted registers if // that's more efficient. Returns true iff selection to AArch64::ORR happens. static bool tryOrrWithShift(SDNode *N, SDValue OrOpd0, SDValue OrOpd1, SDValue Src, SDValue Dst, SelectionDAG *CurDAG, const bool BiggerPattern) { EVT VT = N->getValueType(0); assert(N->getOpcode() == ISD::OR && "Expect N to be an OR node"); assert(((N->getOperand(0) == OrOpd0 && N->getOperand(1) == OrOpd1) || (N->getOperand(1) == OrOpd0 && N->getOperand(0) == OrOpd1)) && "Expect OrOpd0 and OrOpd1 to be operands of ISD::OR"); assert((VT == MVT::i32 || VT == MVT::i64) && "Expect result type to be i32 or i64 since N is combinable to BFM"); SDLoc DL(N); // Bail out if BFM simplifies away one node in BFM Dst. if (OrOpd1 != Dst) return false; const unsigned OrrOpc = (VT == MVT::i32) ? AArch64::ORRWrs : AArch64::ORRXrs; // For "BFM Rd, Rn, #immr, #imms", it's known that BFM simplifies away fewer // nodes from Rn (or inserts additional shift node) if BiggerPattern is true. if (BiggerPattern) { uint64_t SrcAndImm; if (isOpcWithIntImmediate(OrOpd0.getNode(), ISD::AND, SrcAndImm) && isMask_64(SrcAndImm) && OrOpd0.getOperand(0) == Src) { // OrOpd0 = AND Src, #Mask // So BFM simplifies away one AND node from Src and doesn't simplify away // nodes from Dst. If ORR with left-shifted operand also simplifies away // one node (from Rd), ORR is better since it has higher throughput and // smaller latency than BFM on many AArch64 processors (and for the rest // ORR is at least as good as BFM). SDValue ShiftedOperand; uint64_t EncodedShiftImm; if (isWorthFoldingIntoOrrWithShift(Dst, CurDAG, ShiftedOperand, EncodedShiftImm)) { SDValue Ops[] = {OrOpd0, ShiftedOperand, CurDAG->getTargetConstant(EncodedShiftImm, DL, VT)}; CurDAG->SelectNodeTo(N, OrrOpc, VT, Ops); return true; } } return false; } assert((!BiggerPattern) && "BiggerPattern should be handled above"); uint64_t ShlImm; if (isOpcWithIntImmediate(OrOpd0.getNode(), ISD::SHL, ShlImm)) { if (OrOpd0.getOperand(0) == Src && OrOpd0.hasOneUse()) { SDValue Ops[] = { Dst, Src, CurDAG->getTargetConstant( AArch64_AM::getShifterImm(AArch64_AM::LSL, ShlImm), DL, VT)}; CurDAG->SelectNodeTo(N, OrrOpc, VT, Ops); return true; } // Select the following pattern to left-shifted operand rather than BFI. // %val1 = op .. // %val2 = shl %val1, #imm // %res = or %val1, %val2 // // If N is selected to be BFI, we know that // 1) OrOpd0 would be the operand from which extract bits (i.e., folded into // BFI) 2) OrOpd1 would be the destination operand (i.e., preserved) // // Instead of selecting N to BFI, fold OrOpd0 as a left shift directly. if (OrOpd0.getOperand(0) == OrOpd1) { SDValue Ops[] = { OrOpd1, OrOpd1, CurDAG->getTargetConstant( AArch64_AM::getShifterImm(AArch64_AM::LSL, ShlImm), DL, VT)}; CurDAG->SelectNodeTo(N, OrrOpc, VT, Ops); return true; } } uint64_t SrlImm; if (isOpcWithIntImmediate(OrOpd0.getNode(), ISD::SRL, SrlImm)) { // Select the following pattern to right-shifted operand rather than BFXIL. // %val1 = op .. // %val2 = lshr %val1, #imm // %res = or %val1, %val2 // // If N is selected to be BFXIL, we know that // 1) OrOpd0 would be the operand from which extract bits (i.e., folded into // BFXIL) 2) OrOpd1 would be the destination operand (i.e., preserved) // // Instead of selecting N to BFXIL, fold OrOpd0 as a right shift directly. if (OrOpd0.getOperand(0) == OrOpd1) { SDValue Ops[] = { OrOpd1, OrOpd1, CurDAG->getTargetConstant( AArch64_AM::getShifterImm(AArch64_AM::LSR, SrlImm), DL, VT)}; CurDAG->SelectNodeTo(N, OrrOpc, VT, Ops); return true; } } return false; } static bool tryBitfieldInsertOpFromOr(SDNode *N, const APInt &UsefulBits, SelectionDAG *CurDAG) { assert(N->getOpcode() == ISD::OR && "Expect a OR operation"); EVT VT = N->getValueType(0); if (VT != MVT::i32 && VT != MVT::i64) return false; unsigned BitWidth = VT.getSizeInBits(); // Because of simplify-demanded-bits in DAGCombine, involved masks may not // have the expected shape. Try to undo that. unsigned NumberOfIgnoredLowBits = UsefulBits.countr_zero(); unsigned NumberOfIgnoredHighBits = UsefulBits.countl_zero(); // Given a OR operation, check if we have the following pattern // ubfm c, b, imm, imm2 (or something that does the same jobs, see // isBitfieldExtractOp) // d = e & mask2 ; where mask is a binary sequence of 1..10..0 and // countTrailingZeros(mask2) == imm2 - imm + 1 // f = d | c // if yes, replace the OR instruction with: // f = BFM Opd0, Opd1, LSB, MSB ; where LSB = imm, and MSB = imm2 // OR is commutative, check all combinations of operand order and values of // BiggerPattern, i.e. // Opd0, Opd1, BiggerPattern=false // Opd1, Opd0, BiggerPattern=false // Opd0, Opd1, BiggerPattern=true // Opd1, Opd0, BiggerPattern=true // Several of these combinations may match, so check with BiggerPattern=false // first since that will produce better results by matching more instructions // and/or inserting fewer extra instructions. for (int I = 0; I < 4; ++I) { SDValue Dst, Src; unsigned ImmR, ImmS; bool BiggerPattern = I / 2; SDValue OrOpd0Val = N->getOperand(I % 2); SDNode *OrOpd0 = OrOpd0Val.getNode(); SDValue OrOpd1Val = N->getOperand((I + 1) % 2); SDNode *OrOpd1 = OrOpd1Val.getNode(); unsigned BFXOpc; int DstLSB, Width; if (isBitfieldExtractOp(CurDAG, OrOpd0, BFXOpc, Src, ImmR, ImmS, NumberOfIgnoredLowBits, BiggerPattern)) { // Check that the returned opcode is compatible with the pattern, // i.e., same type and zero extended (U and not S) if ((BFXOpc != AArch64::UBFMXri && VT == MVT::i64) || (BFXOpc != AArch64::UBFMWri && VT == MVT::i32)) continue; // Compute the width of the bitfield insertion DstLSB = 0; Width = ImmS - ImmR + 1; // FIXME: This constraint is to catch bitfield insertion we may // want to widen the pattern if we want to grab general bitfied // move case if (Width <= 0) continue; // If the mask on the insertee is correct, we have a BFXIL operation. We // can share the ImmR and ImmS values from the already-computed UBFM. } else if (isBitfieldPositioningOp(CurDAG, OrOpd0Val, BiggerPattern, Src, DstLSB, Width)) { ImmR = (BitWidth - DstLSB) % BitWidth; ImmS = Width - 1; } else continue; // Check the second part of the pattern EVT VT = OrOpd1Val.getValueType(); assert((VT == MVT::i32 || VT == MVT::i64) && "unexpected OR operand"); // Compute the Known Zero for the candidate of the first operand. // This allows to catch more general case than just looking for // AND with imm. Indeed, simplify-demanded-bits may have removed // the AND instruction because it proves it was useless. KnownBits Known = CurDAG->computeKnownBits(OrOpd1Val); // Check if there is enough room for the second operand to appear // in the first one APInt BitsToBeInserted = APInt::getBitsSet(Known.getBitWidth(), DstLSB, DstLSB + Width); if ((BitsToBeInserted & ~Known.Zero) != 0) continue; // Set the first operand uint64_t Imm; if (isOpcWithIntImmediate(OrOpd1, ISD::AND, Imm) && isBitfieldDstMask(Imm, BitsToBeInserted, NumberOfIgnoredHighBits, VT)) // In that case, we can eliminate the AND Dst = OrOpd1->getOperand(0); else // Maybe the AND has been removed by simplify-demanded-bits // or is useful because it discards more bits Dst = OrOpd1Val; // Before selecting ISD::OR node to AArch64::BFM, see if an AArch64::ORR // with shifted operand is more efficient. if (tryOrrWithShift(N, OrOpd0Val, OrOpd1Val, Src, Dst, CurDAG, BiggerPattern)) return true; // both parts match SDLoc DL(N); SDValue Ops[] = {Dst, Src, CurDAG->getTargetConstant(ImmR, DL, VT), CurDAG->getTargetConstant(ImmS, DL, VT)}; unsigned Opc = (VT == MVT::i32) ? AArch64::BFMWri : AArch64::BFMXri; CurDAG->SelectNodeTo(N, Opc, VT, Ops); return true; } // Generate a BFXIL from 'or (and X, Mask0Imm), (and Y, Mask1Imm)' iff // Mask0Imm and ~Mask1Imm are equivalent and one of the MaskImms is a shifted // mask (e.g., 0x000ffff0). uint64_t Mask0Imm, Mask1Imm; SDValue And0 = N->getOperand(0); SDValue And1 = N->getOperand(1); if (And0.hasOneUse() && And1.hasOneUse() && isOpcWithIntImmediate(And0.getNode(), ISD::AND, Mask0Imm) && isOpcWithIntImmediate(And1.getNode(), ISD::AND, Mask1Imm) && APInt(BitWidth, Mask0Imm) == ~APInt(BitWidth, Mask1Imm) && (isShiftedMask(Mask0Imm, VT) || isShiftedMask(Mask1Imm, VT))) { // ORR is commutative, so canonicalize to the form 'or (and X, Mask0Imm), // (and Y, Mask1Imm)' where Mask1Imm is the shifted mask masking off the // bits to be inserted. if (isShiftedMask(Mask0Imm, VT)) { std::swap(And0, And1); std::swap(Mask0Imm, Mask1Imm); } SDValue Src = And1->getOperand(0); SDValue Dst = And0->getOperand(0); unsigned LSB = llvm::countr_zero(Mask1Imm); int Width = BitWidth - APInt(BitWidth, Mask0Imm).popcount(); // The BFXIL inserts the low-order bits from a source register, so right // shift the needed bits into place. SDLoc DL(N); unsigned ShiftOpc = (VT == MVT::i32) ? AArch64::UBFMWri : AArch64::UBFMXri; uint64_t LsrImm = LSB; if (Src->hasOneUse() && isOpcWithIntImmediate(Src.getNode(), ISD::SRL, LsrImm) && (LsrImm + LSB) < BitWidth) { Src = Src->getOperand(0); LsrImm += LSB; } SDNode *LSR = CurDAG->getMachineNode( ShiftOpc, DL, VT, Src, CurDAG->getTargetConstant(LsrImm, DL, VT), CurDAG->getTargetConstant(BitWidth - 1, DL, VT)); // BFXIL is an alias of BFM, so translate to BFM operands. unsigned ImmR = (BitWidth - LSB) % BitWidth; unsigned ImmS = Width - 1; // Create the BFXIL instruction. SDValue Ops[] = {Dst, SDValue(LSR, 0), CurDAG->getTargetConstant(ImmR, DL, VT), CurDAG->getTargetConstant(ImmS, DL, VT)}; unsigned Opc = (VT == MVT::i32) ? AArch64::BFMWri : AArch64::BFMXri; CurDAG->SelectNodeTo(N, Opc, VT, Ops); return true; } return false; } bool AArch64DAGToDAGISel::tryBitfieldInsertOp(SDNode *N) { if (N->getOpcode() != ISD::OR) return false; APInt NUsefulBits; getUsefulBits(SDValue(N, 0), NUsefulBits); // If all bits are not useful, just return UNDEF. if (!NUsefulBits) { CurDAG->SelectNodeTo(N, TargetOpcode::IMPLICIT_DEF, N->getValueType(0)); return true; } if (tryBitfieldInsertOpFromOr(N, NUsefulBits, CurDAG)) return true; return tryBitfieldInsertOpFromOrAndImm(N, CurDAG); } /// SelectBitfieldInsertInZeroOp - Match a UBFIZ instruction that is the /// equivalent of a left shift by a constant amount followed by an and masking /// out a contiguous set of bits. bool AArch64DAGToDAGISel::tryBitfieldInsertInZeroOp(SDNode *N) { if (N->getOpcode() != ISD::AND) return false; EVT VT = N->getValueType(0); if (VT != MVT::i32 && VT != MVT::i64) return false; SDValue Op0; int DstLSB, Width; if (!isBitfieldPositioningOp(CurDAG, SDValue(N, 0), /*BiggerPattern=*/false, Op0, DstLSB, Width)) return false; // ImmR is the rotate right amount. unsigned ImmR = (VT.getSizeInBits() - DstLSB) % VT.getSizeInBits(); // ImmS is the most significant bit of the source to be moved. unsigned ImmS = Width - 1; SDLoc DL(N); SDValue Ops[] = {Op0, CurDAG->getTargetConstant(ImmR, DL, VT), CurDAG->getTargetConstant(ImmS, DL, VT)}; unsigned Opc = (VT == MVT::i32) ? AArch64::UBFMWri : AArch64::UBFMXri; CurDAG->SelectNodeTo(N, Opc, VT, Ops); return true; } /// tryShiftAmountMod - Take advantage of built-in mod of shift amount in /// variable shift/rotate instructions. bool AArch64DAGToDAGISel::tryShiftAmountMod(SDNode *N) { EVT VT = N->getValueType(0); unsigned Opc; switch (N->getOpcode()) { case ISD::ROTR: Opc = (VT == MVT::i32) ? AArch64::RORVWr : AArch64::RORVXr; break; case ISD::SHL: Opc = (VT == MVT::i32) ? AArch64::LSLVWr : AArch64::LSLVXr; break; case ISD::SRL: Opc = (VT == MVT::i32) ? AArch64::LSRVWr : AArch64::LSRVXr; break; case ISD::SRA: Opc = (VT == MVT::i32) ? AArch64::ASRVWr : AArch64::ASRVXr; break; default: return false; } uint64_t Size; uint64_t Bits; if (VT == MVT::i32) { Bits = 5; Size = 32; } else if (VT == MVT::i64) { Bits = 6; Size = 64; } else return false; SDValue ShiftAmt = N->getOperand(1); SDLoc DL(N); SDValue NewShiftAmt; // Skip over an extend of the shift amount. if (ShiftAmt->getOpcode() == ISD::ZERO_EXTEND || ShiftAmt->getOpcode() == ISD::ANY_EXTEND) ShiftAmt = ShiftAmt->getOperand(0); if (ShiftAmt->getOpcode() == ISD::ADD || ShiftAmt->getOpcode() == ISD::SUB) { SDValue Add0 = ShiftAmt->getOperand(0); SDValue Add1 = ShiftAmt->getOperand(1); uint64_t Add0Imm; uint64_t Add1Imm; if (isIntImmediate(Add1, Add1Imm) && (Add1Imm % Size == 0)) { // If we are shifting by X+/-N where N == 0 mod Size, then just shift by X // to avoid the ADD/SUB. NewShiftAmt = Add0; } else if (ShiftAmt->getOpcode() == ISD::SUB && isIntImmediate(Add0, Add0Imm) && Add0Imm != 0 && (Add0Imm % Size == 0)) { // If we are shifting by N-X where N == 0 mod Size, then just shift by -X // to generate a NEG instead of a SUB from a constant. unsigned NegOpc; unsigned ZeroReg; EVT SubVT = ShiftAmt->getValueType(0); if (SubVT == MVT::i32) { NegOpc = AArch64::SUBWrr; ZeroReg = AArch64::WZR; } else { assert(SubVT == MVT::i64); NegOpc = AArch64::SUBXrr; ZeroReg = AArch64::XZR; } SDValue Zero = CurDAG->getCopyFromReg(CurDAG->getEntryNode(), DL, ZeroReg, SubVT); MachineSDNode *Neg = CurDAG->getMachineNode(NegOpc, DL, SubVT, Zero, Add1); NewShiftAmt = SDValue(Neg, 0); } else if (ShiftAmt->getOpcode() == ISD::SUB && isIntImmediate(Add0, Add0Imm) && (Add0Imm % Size == Size - 1)) { // If we are shifting by N-X where N == -1 mod Size, then just shift by ~X // to generate a NOT instead of a SUB from a constant. unsigned NotOpc; unsigned ZeroReg; EVT SubVT = ShiftAmt->getValueType(0); if (SubVT == MVT::i32) { NotOpc = AArch64::ORNWrr; ZeroReg = AArch64::WZR; } else { assert(SubVT == MVT::i64); NotOpc = AArch64::ORNXrr; ZeroReg = AArch64::XZR; } SDValue Zero = CurDAG->getCopyFromReg(CurDAG->getEntryNode(), DL, ZeroReg, SubVT); MachineSDNode *Not = CurDAG->getMachineNode(NotOpc, DL, SubVT, Zero, Add1); NewShiftAmt = SDValue(Not, 0); } else return false; } else { // If the shift amount is masked with an AND, check that the mask covers the // bits that are implicitly ANDed off by the above opcodes and if so, skip // the AND. uint64_t MaskImm; if (!isOpcWithIntImmediate(ShiftAmt.getNode(), ISD::AND, MaskImm) && !isOpcWithIntImmediate(ShiftAmt.getNode(), AArch64ISD::ANDS, MaskImm)) return false; if ((unsigned)llvm::countr_one(MaskImm) < Bits) return false; NewShiftAmt = ShiftAmt->getOperand(0); } // Narrow/widen the shift amount to match the size of the shift operation. if (VT == MVT::i32) NewShiftAmt = narrowIfNeeded(CurDAG, NewShiftAmt); else if (VT == MVT::i64 && NewShiftAmt->getValueType(0) == MVT::i32) { SDValue SubReg = CurDAG->getTargetConstant(AArch64::sub_32, DL, MVT::i32); MachineSDNode *Ext = CurDAG->getMachineNode( AArch64::SUBREG_TO_REG, DL, VT, CurDAG->getTargetConstant(0, DL, MVT::i64), NewShiftAmt, SubReg); NewShiftAmt = SDValue(Ext, 0); } SDValue Ops[] = {N->getOperand(0), NewShiftAmt}; CurDAG->SelectNodeTo(N, Opc, VT, Ops); return true; } bool AArch64DAGToDAGISel::SelectCVTFixedPosOperand(SDValue N, SDValue &FixedPos, unsigned RegWidth) { APFloat FVal(0.0); if (ConstantFPSDNode *CN = dyn_cast(N)) FVal = CN->getValueAPF(); else if (LoadSDNode *LN = dyn_cast(N)) { // Some otherwise illegal constants are allowed in this case. if (LN->getOperand(1).getOpcode() != AArch64ISD::ADDlow || !isa(LN->getOperand(1)->getOperand(1))) return false; ConstantPoolSDNode *CN = dyn_cast(LN->getOperand(1)->getOperand(1)); FVal = cast(CN->getConstVal())->getValueAPF(); } else return false; // An FCVT[SU] instruction performs: convertToInt(Val * 2^fbits) where fbits // is between 1 and 32 for a destination w-register, or 1 and 64 for an // x-register. // // By this stage, we've detected (fp_to_[su]int (fmul Val, THIS_NODE)) so we // want THIS_NODE to be 2^fbits. This is much easier to deal with using // integers. bool IsExact; // fbits is between 1 and 64 in the worst-case, which means the fmul // could have 2^64 as an actual operand. Need 65 bits of precision. APSInt IntVal(65, true); FVal.convertToInteger(IntVal, APFloat::rmTowardZero, &IsExact); // N.b. isPowerOf2 also checks for > 0. if (!IsExact || !IntVal.isPowerOf2()) return false; unsigned FBits = IntVal.logBase2(); // Checks above should have guaranteed that we haven't lost information in // finding FBits, but it must still be in range. if (FBits == 0 || FBits > RegWidth) return false; FixedPos = CurDAG->getTargetConstant(FBits, SDLoc(N), MVT::i32); return true; } // Inspects a register string of the form o0:op1:CRn:CRm:op2 gets the fields // of the string and obtains the integer values from them and combines these // into a single value to be used in the MRS/MSR instruction. static int getIntOperandFromRegisterString(StringRef RegString) { SmallVector Fields; RegString.split(Fields, ':'); if (Fields.size() == 1) return -1; assert(Fields.size() == 5 && "Invalid number of fields in read register string"); SmallVector Ops; bool AllIntFields = true; for (StringRef Field : Fields) { unsigned IntField; AllIntFields &= !Field.getAsInteger(10, IntField); Ops.push_back(IntField); } assert(AllIntFields && "Unexpected non-integer value in special register string."); (void)AllIntFields; // Need to combine the integer fields of the string into a single value // based on the bit encoding of MRS/MSR instruction. return (Ops[0] << 14) | (Ops[1] << 11) | (Ops[2] << 7) | (Ops[3] << 3) | (Ops[4]); } // Lower the read_register intrinsic to an MRS instruction node if the special // register string argument is either of the form detailed in the ALCE (the // form described in getIntOperandsFromRegsterString) or is a named register // known by the MRS SysReg mapper. bool AArch64DAGToDAGISel::tryReadRegister(SDNode *N) { const auto *MD = cast(N->getOperand(1)); const auto *RegString = cast(MD->getMD()->getOperand(0)); SDLoc DL(N); bool ReadIs128Bit = N->getOpcode() == AArch64ISD::MRRS; unsigned Opcode64Bit = AArch64::MRS; int Imm = getIntOperandFromRegisterString(RegString->getString()); if (Imm == -1) { // No match, Use the sysreg mapper to map the remaining possible strings to // the value for the register to be used for the instruction operand. const auto *TheReg = AArch64SysReg::lookupSysRegByName(RegString->getString()); if (TheReg && TheReg->Readable && TheReg->haveFeatures(Subtarget->getFeatureBits())) Imm = TheReg->Encoding; else Imm = AArch64SysReg::parseGenericRegister(RegString->getString()); if (Imm == -1) { // Still no match, see if this is "pc" or give up. if (!ReadIs128Bit && RegString->getString() == "pc") { Opcode64Bit = AArch64::ADR; Imm = 0; } else { return false; } } } SDValue InChain = N->getOperand(0); SDValue SysRegImm = CurDAG->getTargetConstant(Imm, DL, MVT::i32); if (!ReadIs128Bit) { CurDAG->SelectNodeTo(N, Opcode64Bit, MVT::i64, MVT::Other /* Chain */, {SysRegImm, InChain}); } else { SDNode *MRRS = CurDAG->getMachineNode( AArch64::MRRS, DL, {MVT::Untyped /* XSeqPair */, MVT::Other /* Chain */}, {SysRegImm, InChain}); // Sysregs are not endian. The even register always contains the low half // of the register. SDValue Lo = CurDAG->getTargetExtractSubreg(AArch64::sube64, DL, MVT::i64, SDValue(MRRS, 0)); SDValue Hi = CurDAG->getTargetExtractSubreg(AArch64::subo64, DL, MVT::i64, SDValue(MRRS, 0)); SDValue OutChain = SDValue(MRRS, 1); ReplaceUses(SDValue(N, 0), Lo); ReplaceUses(SDValue(N, 1), Hi); ReplaceUses(SDValue(N, 2), OutChain); }; return true; } // Lower the write_register intrinsic to an MSR instruction node if the special // register string argument is either of the form detailed in the ALCE (the // form described in getIntOperandsFromRegsterString) or is a named register // known by the MSR SysReg mapper. bool AArch64DAGToDAGISel::tryWriteRegister(SDNode *N) { const auto *MD = cast(N->getOperand(1)); const auto *RegString = cast(MD->getMD()->getOperand(0)); SDLoc DL(N); bool WriteIs128Bit = N->getOpcode() == AArch64ISD::MSRR; if (!WriteIs128Bit) { // Check if the register was one of those allowed as the pstatefield value // in the MSR (immediate) instruction. To accept the values allowed in the // pstatefield for the MSR (immediate) instruction, we also require that an // immediate value has been provided as an argument, we know that this is // the case as it has been ensured by semantic checking. auto trySelectPState = [&](auto PMapper, unsigned State) { if (PMapper) { assert(isa(N->getOperand(2)) && "Expected a constant integer expression."); unsigned Reg = PMapper->Encoding; uint64_t Immed = cast(N->getOperand(2))->getZExtValue(); CurDAG->SelectNodeTo( N, State, MVT::Other, CurDAG->getTargetConstant(Reg, DL, MVT::i32), CurDAG->getTargetConstant(Immed, DL, MVT::i16), N->getOperand(0)); return true; } return false; }; if (trySelectPState( AArch64PState::lookupPStateImm0_15ByName(RegString->getString()), AArch64::MSRpstateImm4)) return true; if (trySelectPState( AArch64PState::lookupPStateImm0_1ByName(RegString->getString()), AArch64::MSRpstateImm1)) return true; } int Imm = getIntOperandFromRegisterString(RegString->getString()); if (Imm == -1) { // Use the sysreg mapper to attempt to map the remaining possible strings // to the value for the register to be used for the MSR (register) // instruction operand. auto TheReg = AArch64SysReg::lookupSysRegByName(RegString->getString()); if (TheReg && TheReg->Writeable && TheReg->haveFeatures(Subtarget->getFeatureBits())) Imm = TheReg->Encoding; else Imm = AArch64SysReg::parseGenericRegister(RegString->getString()); if (Imm == -1) return false; } SDValue InChain = N->getOperand(0); if (!WriteIs128Bit) { CurDAG->SelectNodeTo(N, AArch64::MSR, MVT::Other, CurDAG->getTargetConstant(Imm, DL, MVT::i32), N->getOperand(2), InChain); } else { // No endian swap. The lower half always goes into the even subreg, and the // higher half always into the odd supreg. SDNode *Pair = CurDAG->getMachineNode( TargetOpcode::REG_SEQUENCE, DL, MVT::Untyped /* XSeqPair */, {CurDAG->getTargetConstant(AArch64::XSeqPairsClassRegClass.getID(), DL, MVT::i32), N->getOperand(2), CurDAG->getTargetConstant(AArch64::sube64, DL, MVT::i32), N->getOperand(3), CurDAG->getTargetConstant(AArch64::subo64, DL, MVT::i32)}); CurDAG->SelectNodeTo(N, AArch64::MSRR, MVT::Other, CurDAG->getTargetConstant(Imm, DL, MVT::i32), SDValue(Pair, 0), InChain); } return true; } /// We've got special pseudo-instructions for these bool AArch64DAGToDAGISel::SelectCMP_SWAP(SDNode *N) { unsigned Opcode; EVT MemTy = cast(N)->getMemoryVT(); // Leave IR for LSE if subtarget supports it. if (Subtarget->hasLSE()) return false; if (MemTy == MVT::i8) Opcode = AArch64::CMP_SWAP_8; else if (MemTy == MVT::i16) Opcode = AArch64::CMP_SWAP_16; else if (MemTy == MVT::i32) Opcode = AArch64::CMP_SWAP_32; else if (MemTy == MVT::i64) Opcode = AArch64::CMP_SWAP_64; else llvm_unreachable("Unknown AtomicCmpSwap type"); MVT RegTy = MemTy == MVT::i64 ? MVT::i64 : MVT::i32; SDValue Ops[] = {N->getOperand(1), N->getOperand(2), N->getOperand(3), N->getOperand(0)}; SDNode *CmpSwap = CurDAG->getMachineNode( Opcode, SDLoc(N), CurDAG->getVTList(RegTy, MVT::i32, MVT::Other), Ops); MachineMemOperand *MemOp = cast(N)->getMemOperand(); CurDAG->setNodeMemRefs(cast(CmpSwap), {MemOp}); ReplaceUses(SDValue(N, 0), SDValue(CmpSwap, 0)); ReplaceUses(SDValue(N, 1), SDValue(CmpSwap, 2)); CurDAG->RemoveDeadNode(N); return true; } bool AArch64DAGToDAGISel::SelectSVEAddSubImm(SDValue N, MVT VT, SDValue &Imm, SDValue &Shift) { if (!isa(N)) return false; SDLoc DL(N); uint64_t Val = cast(N) ->getAPIntValue() .trunc(VT.getFixedSizeInBits()) .getZExtValue(); switch (VT.SimpleTy) { case MVT::i8: // All immediates are supported. Shift = CurDAG->getTargetConstant(0, DL, MVT::i32); Imm = CurDAG->getTargetConstant(Val, DL, MVT::i32); return true; case MVT::i16: case MVT::i32: case MVT::i64: // Support 8bit unsigned immediates. if (Val <= 255) { Shift = CurDAG->getTargetConstant(0, DL, MVT::i32); Imm = CurDAG->getTargetConstant(Val, DL, MVT::i32); return true; } // Support 16bit unsigned immediates that are a multiple of 256. if (Val <= 65280 && Val % 256 == 0) { Shift = CurDAG->getTargetConstant(8, DL, MVT::i32); Imm = CurDAG->getTargetConstant(Val >> 8, DL, MVT::i32); return true; } break; default: break; } return false; } bool AArch64DAGToDAGISel::SelectSVECpyDupImm(SDValue N, MVT VT, SDValue &Imm, SDValue &Shift) { if (!isa(N)) return false; SDLoc DL(N); int64_t Val = cast(N) ->getAPIntValue() .trunc(VT.getFixedSizeInBits()) .getSExtValue(); switch (VT.SimpleTy) { case MVT::i8: // All immediates are supported. Shift = CurDAG->getTargetConstant(0, DL, MVT::i32); Imm = CurDAG->getTargetConstant(Val & 0xFF, DL, MVT::i32); return true; case MVT::i16: case MVT::i32: case MVT::i64: // Support 8bit signed immediates. if (Val >= -128 && Val <= 127) { Shift = CurDAG->getTargetConstant(0, DL, MVT::i32); Imm = CurDAG->getTargetConstant(Val & 0xFF, DL, MVT::i32); return true; } // Support 16bit signed immediates that are a multiple of 256. if (Val >= -32768 && Val <= 32512 && Val % 256 == 0) { Shift = CurDAG->getTargetConstant(8, DL, MVT::i32); Imm = CurDAG->getTargetConstant((Val >> 8) & 0xFF, DL, MVT::i32); return true; } break; default: break; } return false; } bool AArch64DAGToDAGISel::SelectSVESignedArithImm(SDValue N, SDValue &Imm) { if (auto CNode = dyn_cast(N)) { int64_t ImmVal = CNode->getSExtValue(); SDLoc DL(N); if (ImmVal >= -128 && ImmVal < 128) { Imm = CurDAG->getTargetConstant(ImmVal, DL, MVT::i32); return true; } } return false; } bool AArch64DAGToDAGISel::SelectSVEArithImm(SDValue N, MVT VT, SDValue &Imm) { if (auto CNode = dyn_cast(N)) { uint64_t ImmVal = CNode->getZExtValue(); switch (VT.SimpleTy) { case MVT::i8: ImmVal &= 0xFF; break; case MVT::i16: ImmVal &= 0xFFFF; break; case MVT::i32: ImmVal &= 0xFFFFFFFF; break; case MVT::i64: break; default: llvm_unreachable("Unexpected type"); } if (ImmVal < 256) { Imm = CurDAG->getTargetConstant(ImmVal, SDLoc(N), MVT::i32); return true; } } return false; } bool AArch64DAGToDAGISel::SelectSVELogicalImm(SDValue N, MVT VT, SDValue &Imm, bool Invert) { if (auto CNode = dyn_cast(N)) { uint64_t ImmVal = CNode->getZExtValue(); SDLoc DL(N); if (Invert) ImmVal = ~ImmVal; // Shift mask depending on type size. switch (VT.SimpleTy) { case MVT::i8: ImmVal &= 0xFF; ImmVal |= ImmVal << 8; ImmVal |= ImmVal << 16; ImmVal |= ImmVal << 32; break; case MVT::i16: ImmVal &= 0xFFFF; ImmVal |= ImmVal << 16; ImmVal |= ImmVal << 32; break; case MVT::i32: ImmVal &= 0xFFFFFFFF; ImmVal |= ImmVal << 32; break; case MVT::i64: break; default: llvm_unreachable("Unexpected type"); } uint64_t encoding; if (AArch64_AM::processLogicalImmediate(ImmVal, 64, encoding)) { Imm = CurDAG->getTargetConstant(encoding, DL, MVT::i64); return true; } } return false; } // SVE shift intrinsics allow shift amounts larger than the element's bitwidth. // Rather than attempt to normalise everything we can sometimes saturate the // shift amount during selection. This function also allows for consistent // isel patterns by ensuring the resulting "Imm" node is of the i32 type // required by the instructions. bool AArch64DAGToDAGISel::SelectSVEShiftImm(SDValue N, uint64_t Low, uint64_t High, bool AllowSaturation, SDValue &Imm) { if (auto *CN = dyn_cast(N)) { uint64_t ImmVal = CN->getZExtValue(); // Reject shift amounts that are too small. if (ImmVal < Low) return false; // Reject or saturate shift amounts that are too big. if (ImmVal > High) { if (!AllowSaturation) return false; ImmVal = High; } Imm = CurDAG->getTargetConstant(ImmVal, SDLoc(N), MVT::i32); return true; } return false; } bool AArch64DAGToDAGISel::trySelectStackSlotTagP(SDNode *N) { // tagp(FrameIndex, IRGstack, tag_offset): // since the offset between FrameIndex and IRGstack is a compile-time // constant, this can be lowered to a single ADDG instruction. if (!(isa(N->getOperand(1)))) { return false; } SDValue IRG_SP = N->getOperand(2); if (IRG_SP->getOpcode() != ISD::INTRINSIC_W_CHAIN || cast(IRG_SP->getOperand(1))->getZExtValue() != Intrinsic::aarch64_irg_sp) { return false; } const TargetLowering *TLI = getTargetLowering(); SDLoc DL(N); int FI = cast(N->getOperand(1))->getIndex(); SDValue FiOp = CurDAG->getTargetFrameIndex( FI, TLI->getPointerTy(CurDAG->getDataLayout())); int TagOffset = cast(N->getOperand(3))->getZExtValue(); SDNode *Out = CurDAG->getMachineNode( AArch64::TAGPstack, DL, MVT::i64, {FiOp, CurDAG->getTargetConstant(0, DL, MVT::i64), N->getOperand(2), CurDAG->getTargetConstant(TagOffset, DL, MVT::i64)}); ReplaceNode(N, Out); return true; } void AArch64DAGToDAGISel::SelectTagP(SDNode *N) { assert(isa(N->getOperand(3)) && "llvm.aarch64.tagp third argument must be an immediate"); if (trySelectStackSlotTagP(N)) return; // FIXME: above applies in any case when offset between Op1 and Op2 is a // compile-time constant, not just for stack allocations. // General case for unrelated pointers in Op1 and Op2. SDLoc DL(N); int TagOffset = cast(N->getOperand(3))->getZExtValue(); SDNode *N1 = CurDAG->getMachineNode(AArch64::SUBP, DL, MVT::i64, {N->getOperand(1), N->getOperand(2)}); SDNode *N2 = CurDAG->getMachineNode(AArch64::ADDXrr, DL, MVT::i64, {SDValue(N1, 0), N->getOperand(2)}); SDNode *N3 = CurDAG->getMachineNode( AArch64::ADDG, DL, MVT::i64, {SDValue(N2, 0), CurDAG->getTargetConstant(0, DL, MVT::i64), CurDAG->getTargetConstant(TagOffset, DL, MVT::i64)}); ReplaceNode(N, N3); } bool AArch64DAGToDAGISel::trySelectCastFixedLengthToScalableVector(SDNode *N) { assert(N->getOpcode() == ISD::INSERT_SUBVECTOR && "Invalid Node!"); // Bail when not a "cast" like insert_subvector. if (cast(N->getOperand(2))->getZExtValue() != 0) return false; if (!N->getOperand(0).isUndef()) return false; // Bail when normal isel should do the job. EVT VT = N->getValueType(0); EVT InVT = N->getOperand(1).getValueType(); if (VT.isFixedLengthVector() || InVT.isScalableVector()) return false; if (InVT.getSizeInBits() <= 128) return false; // NOTE: We can only get here when doing fixed length SVE code generation. // We do manual selection because the types involved are not linked to real // registers (despite being legal) and must be coerced into SVE registers. assert(VT.getSizeInBits().getKnownMinValue() == AArch64::SVEBitsPerBlock && "Expected to insert into a packed scalable vector!"); SDLoc DL(N); auto RC = CurDAG->getTargetConstant(AArch64::ZPRRegClassID, DL, MVT::i64); ReplaceNode(N, CurDAG->getMachineNode(TargetOpcode::COPY_TO_REGCLASS, DL, VT, N->getOperand(1), RC)); return true; } bool AArch64DAGToDAGISel::trySelectCastScalableToFixedLengthVector(SDNode *N) { assert(N->getOpcode() == ISD::EXTRACT_SUBVECTOR && "Invalid Node!"); // Bail when not a "cast" like extract_subvector. if (cast(N->getOperand(1))->getZExtValue() != 0) return false; // Bail when normal isel can do the job. EVT VT = N->getValueType(0); EVT InVT = N->getOperand(0).getValueType(); if (VT.isScalableVector() || InVT.isFixedLengthVector()) return false; if (VT.getSizeInBits() <= 128) return false; // NOTE: We can only get here when doing fixed length SVE code generation. // We do manual selection because the types involved are not linked to real // registers (despite being legal) and must be coerced into SVE registers. assert(InVT.getSizeInBits().getKnownMinValue() == AArch64::SVEBitsPerBlock && "Expected to extract from a packed scalable vector!"); SDLoc DL(N); auto RC = CurDAG->getTargetConstant(AArch64::ZPRRegClassID, DL, MVT::i64); ReplaceNode(N, CurDAG->getMachineNode(TargetOpcode::COPY_TO_REGCLASS, DL, VT, N->getOperand(0), RC)); return true; } void AArch64DAGToDAGISel::Select(SDNode *Node) { // If we have a custom node, we already have selected! if (Node->isMachineOpcode()) { LLVM_DEBUG(errs() << "== "; Node->dump(CurDAG); errs() << "\n"); Node->setNodeId(-1); return; } // Few custom selection stuff. EVT VT = Node->getValueType(0); switch (Node->getOpcode()) { default: break; case ISD::ATOMIC_CMP_SWAP: if (SelectCMP_SWAP(Node)) return; break; case ISD::READ_REGISTER: case AArch64ISD::MRRS: if (tryReadRegister(Node)) return; break; case ISD::WRITE_REGISTER: case AArch64ISD::MSRR: if (tryWriteRegister(Node)) return; break; case ISD::LOAD: { // Try to select as an indexed load. Fall through to normal processing // if we can't. if (tryIndexedLoad(Node)) return; break; } case ISD::SRL: case ISD::AND: case ISD::SRA: case ISD::SIGN_EXTEND_INREG: if (tryBitfieldExtractOp(Node)) return; if (tryBitfieldInsertInZeroOp(Node)) return; [[fallthrough]]; case ISD::ROTR: case ISD::SHL: if (tryShiftAmountMod(Node)) return; break; case ISD::SIGN_EXTEND: if (tryBitfieldExtractOpFromSExt(Node)) return; break; case ISD::FP_EXTEND: if (tryHighFPExt(Node)) return; break; case ISD::OR: if (tryBitfieldInsertOp(Node)) return; break; case ISD::EXTRACT_SUBVECTOR: { if (trySelectCastScalableToFixedLengthVector(Node)) return; break; } case ISD::INSERT_SUBVECTOR: { if (trySelectCastFixedLengthToScalableVector(Node)) return; break; } case ISD::Constant: { // Materialize zero constants as copies from WZR/XZR. This allows // the coalescer to propagate these into other instructions. ConstantSDNode *ConstNode = cast(Node); if (ConstNode->isZero()) { if (VT == MVT::i32) { SDValue New = CurDAG->getCopyFromReg( CurDAG->getEntryNode(), SDLoc(Node), AArch64::WZR, MVT::i32); ReplaceNode(Node, New.getNode()); return; } else if (VT == MVT::i64) { SDValue New = CurDAG->getCopyFromReg( CurDAG->getEntryNode(), SDLoc(Node), AArch64::XZR, MVT::i64); ReplaceNode(Node, New.getNode()); return; } } break; } case ISD::FrameIndex: { // Selects to ADDXri FI, 0 which in turn will become ADDXri SP, imm. int FI = cast(Node)->getIndex(); unsigned Shifter = AArch64_AM::getShifterImm(AArch64_AM::LSL, 0); const TargetLowering *TLI = getTargetLowering(); SDValue TFI = CurDAG->getTargetFrameIndex( FI, TLI->getPointerTy(CurDAG->getDataLayout())); SDLoc DL(Node); SDValue Ops[] = { TFI, CurDAG->getTargetConstant(0, DL, MVT::i32), CurDAG->getTargetConstant(Shifter, DL, MVT::i32) }; CurDAG->SelectNodeTo(Node, AArch64::ADDXri, MVT::i64, Ops); return; } case ISD::INTRINSIC_W_CHAIN: { unsigned IntNo = cast(Node->getOperand(1))->getZExtValue(); switch (IntNo) { default: break; case Intrinsic::aarch64_ldaxp: case Intrinsic::aarch64_ldxp: { unsigned Op = IntNo == Intrinsic::aarch64_ldaxp ? AArch64::LDAXPX : AArch64::LDXPX; SDValue MemAddr = Node->getOperand(2); SDLoc DL(Node); SDValue Chain = Node->getOperand(0); SDNode *Ld = CurDAG->getMachineNode(Op, DL, MVT::i64, MVT::i64, MVT::Other, MemAddr, Chain); // Transfer memoperands. MachineMemOperand *MemOp = cast(Node)->getMemOperand(); CurDAG->setNodeMemRefs(cast(Ld), {MemOp}); ReplaceNode(Node, Ld); return; } case Intrinsic::aarch64_stlxp: case Intrinsic::aarch64_stxp: { unsigned Op = IntNo == Intrinsic::aarch64_stlxp ? AArch64::STLXPX : AArch64::STXPX; SDLoc DL(Node); SDValue Chain = Node->getOperand(0); SDValue ValLo = Node->getOperand(2); SDValue ValHi = Node->getOperand(3); SDValue MemAddr = Node->getOperand(4); // Place arguments in the right order. SDValue Ops[] = {ValLo, ValHi, MemAddr, Chain}; SDNode *St = CurDAG->getMachineNode(Op, DL, MVT::i32, MVT::Other, Ops); // Transfer memoperands. MachineMemOperand *MemOp = cast(Node)->getMemOperand(); CurDAG->setNodeMemRefs(cast(St), {MemOp}); ReplaceNode(Node, St); return; } case Intrinsic::aarch64_neon_ld1x2: if (VT == MVT::v8i8) { SelectLoad(Node, 2, AArch64::LD1Twov8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 2, AArch64::LD1Twov16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 2, AArch64::LD1Twov4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 2, AArch64::LD1Twov8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 2, AArch64::LD1Twov2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 2, AArch64::LD1Twov4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 2, AArch64::LD1Twov1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 2, AArch64::LD1Twov2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld1x3: if (VT == MVT::v8i8) { SelectLoad(Node, 3, AArch64::LD1Threev8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 3, AArch64::LD1Threev16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 3, AArch64::LD1Threev4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 3, AArch64::LD1Threev8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 3, AArch64::LD1Threev2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 3, AArch64::LD1Threev4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 3, AArch64::LD1Threev1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 3, AArch64::LD1Threev2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld1x4: if (VT == MVT::v8i8) { SelectLoad(Node, 4, AArch64::LD1Fourv8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 4, AArch64::LD1Fourv16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 4, AArch64::LD1Fourv4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 4, AArch64::LD1Fourv8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 4, AArch64::LD1Fourv2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 4, AArch64::LD1Fourv4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 4, AArch64::LD1Fourv1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 4, AArch64::LD1Fourv2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld2: if (VT == MVT::v8i8) { SelectLoad(Node, 2, AArch64::LD2Twov8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 2, AArch64::LD2Twov16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 2, AArch64::LD2Twov4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 2, AArch64::LD2Twov8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 2, AArch64::LD2Twov2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 2, AArch64::LD2Twov4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 2, AArch64::LD1Twov1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 2, AArch64::LD2Twov2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld3: if (VT == MVT::v8i8) { SelectLoad(Node, 3, AArch64::LD3Threev8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 3, AArch64::LD3Threev16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 3, AArch64::LD3Threev4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 3, AArch64::LD3Threev8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 3, AArch64::LD3Threev2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 3, AArch64::LD3Threev4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 3, AArch64::LD1Threev1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 3, AArch64::LD3Threev2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld4: if (VT == MVT::v8i8) { SelectLoad(Node, 4, AArch64::LD4Fourv8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 4, AArch64::LD4Fourv16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 4, AArch64::LD4Fourv4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 4, AArch64::LD4Fourv8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 4, AArch64::LD4Fourv2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 4, AArch64::LD4Fourv4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 4, AArch64::LD1Fourv1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 4, AArch64::LD4Fourv2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld2r: if (VT == MVT::v8i8) { SelectLoad(Node, 2, AArch64::LD2Rv8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 2, AArch64::LD2Rv16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 2, AArch64::LD2Rv4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 2, AArch64::LD2Rv8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 2, AArch64::LD2Rv2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 2, AArch64::LD2Rv4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 2, AArch64::LD2Rv1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 2, AArch64::LD2Rv2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld3r: if (VT == MVT::v8i8) { SelectLoad(Node, 3, AArch64::LD3Rv8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 3, AArch64::LD3Rv16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 3, AArch64::LD3Rv4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 3, AArch64::LD3Rv8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 3, AArch64::LD3Rv2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 3, AArch64::LD3Rv4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 3, AArch64::LD3Rv1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 3, AArch64::LD3Rv2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld4r: if (VT == MVT::v8i8) { SelectLoad(Node, 4, AArch64::LD4Rv8b, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectLoad(Node, 4, AArch64::LD4Rv16b, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectLoad(Node, 4, AArch64::LD4Rv4h, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectLoad(Node, 4, AArch64::LD4Rv8h, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectLoad(Node, 4, AArch64::LD4Rv2s, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectLoad(Node, 4, AArch64::LD4Rv4s, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectLoad(Node, 4, AArch64::LD4Rv1d, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectLoad(Node, 4, AArch64::LD4Rv2d, AArch64::qsub0); return; } break; case Intrinsic::aarch64_neon_ld2lane: if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectLoadLane(Node, 2, AArch64::LD2i8); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectLoadLane(Node, 2, AArch64::LD2i16); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectLoadLane(Node, 2, AArch64::LD2i32); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectLoadLane(Node, 2, AArch64::LD2i64); return; } break; case Intrinsic::aarch64_neon_ld3lane: if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectLoadLane(Node, 3, AArch64::LD3i8); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectLoadLane(Node, 3, AArch64::LD3i16); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectLoadLane(Node, 3, AArch64::LD3i32); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectLoadLane(Node, 3, AArch64::LD3i64); return; } break; case Intrinsic::aarch64_neon_ld4lane: if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectLoadLane(Node, 4, AArch64::LD4i8); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectLoadLane(Node, 4, AArch64::LD4i16); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectLoadLane(Node, 4, AArch64::LD4i32); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectLoadLane(Node, 4, AArch64::LD4i64); return; } break; case Intrinsic::aarch64_ld64b: SelectLoad(Node, 8, AArch64::LD64B, AArch64::x8sub_0); return; case Intrinsic::aarch64_sve_ld2_sret: { if (VT == MVT::nxv16i8) { SelectPredicatedLoad(Node, 2, 0, AArch64::LD2B_IMM, AArch64::LD2B, true); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedLoad(Node, 2, 1, AArch64::LD2H_IMM, AArch64::LD2H, true); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedLoad(Node, 2, 2, AArch64::LD2W_IMM, AArch64::LD2W, true); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedLoad(Node, 2, 3, AArch64::LD2D_IMM, AArch64::LD2D, true); return; } break; } case Intrinsic::aarch64_sve_ld3_sret: { if (VT == MVT::nxv16i8) { SelectPredicatedLoad(Node, 3, 0, AArch64::LD3B_IMM, AArch64::LD3B, true); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedLoad(Node, 3, 1, AArch64::LD3H_IMM, AArch64::LD3H, true); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedLoad(Node, 3, 2, AArch64::LD3W_IMM, AArch64::LD3W, true); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedLoad(Node, 3, 3, AArch64::LD3D_IMM, AArch64::LD3D, true); return; } break; } case Intrinsic::aarch64_sve_ld4_sret: { if (VT == MVT::nxv16i8) { SelectPredicatedLoad(Node, 4, 0, AArch64::LD4B_IMM, AArch64::LD4B, true); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedLoad(Node, 4, 1, AArch64::LD4H_IMM, AArch64::LD4H, true); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedLoad(Node, 4, 2, AArch64::LD4W_IMM, AArch64::LD4W, true); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedLoad(Node, 4, 3, AArch64::LD4D_IMM, AArch64::LD4D, true); return; } break; } case Intrinsic::aarch64_sme_read_hor_vg2: { if (VT == MVT::nxv16i8) { SelectMultiVectorMove<14, 2>(Node, 2, AArch64::ZAB0, AArch64::MOVA_2ZMXI_H_B); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectMultiVectorMove<6, 2>(Node, 2, AArch64::ZAH0, AArch64::MOVA_2ZMXI_H_H); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectMultiVectorMove<2, 2>(Node, 2, AArch64::ZAS0, AArch64::MOVA_2ZMXI_H_S); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectMultiVectorMove<0, 2>(Node, 2, AArch64::ZAD0, AArch64::MOVA_2ZMXI_H_D); return; } break; } case Intrinsic::aarch64_sme_read_ver_vg2: { if (VT == MVT::nxv16i8) { SelectMultiVectorMove<14, 2>(Node, 2, AArch64::ZAB0, AArch64::MOVA_2ZMXI_V_B); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectMultiVectorMove<6, 2>(Node, 2, AArch64::ZAH0, AArch64::MOVA_2ZMXI_V_H); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectMultiVectorMove<2, 2>(Node, 2, AArch64::ZAS0, AArch64::MOVA_2ZMXI_V_S); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectMultiVectorMove<0, 2>(Node, 2, AArch64::ZAD0, AArch64::MOVA_2ZMXI_V_D); return; } break; } case Intrinsic::aarch64_sme_read_hor_vg4: { if (VT == MVT::nxv16i8) { SelectMultiVectorMove<12, 4>(Node, 4, AArch64::ZAB0, AArch64::MOVA_4ZMXI_H_B); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectMultiVectorMove<4, 4>(Node, 4, AArch64::ZAH0, AArch64::MOVA_4ZMXI_H_H); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectMultiVectorMove<0, 2>(Node, 4, AArch64::ZAS0, AArch64::MOVA_4ZMXI_H_S); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectMultiVectorMove<0, 2>(Node, 4, AArch64::ZAD0, AArch64::MOVA_4ZMXI_H_D); return; } break; } case Intrinsic::aarch64_sme_read_ver_vg4: { if (VT == MVT::nxv16i8) { SelectMultiVectorMove<12, 4>(Node, 4, AArch64::ZAB0, AArch64::MOVA_4ZMXI_V_B); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectMultiVectorMove<4, 4>(Node, 4, AArch64::ZAH0, AArch64::MOVA_4ZMXI_V_H); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectMultiVectorMove<0, 4>(Node, 4, AArch64::ZAS0, AArch64::MOVA_4ZMXI_V_S); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectMultiVectorMove<0, 4>(Node, 4, AArch64::ZAD0, AArch64::MOVA_4ZMXI_V_D); return; } break; } case Intrinsic::aarch64_sme_read_vg1x2: { SelectMultiVectorMove<7, 1>(Node, 2, AArch64::ZA, AArch64::MOVA_VG2_2ZMXI); return; } case Intrinsic::aarch64_sme_read_vg1x4: { SelectMultiVectorMove<7, 1>(Node, 4, AArch64::ZA, AArch64::MOVA_VG4_4ZMXI); return; } case Intrinsic::swift_async_context_addr: { SDLoc DL(Node); SDValue Chain = Node->getOperand(0); SDValue CopyFP = CurDAG->getCopyFromReg(Chain, DL, AArch64::FP, MVT::i64); SDValue Res = SDValue( CurDAG->getMachineNode(AArch64::SUBXri, DL, MVT::i64, CopyFP, CurDAG->getTargetConstant(8, DL, MVT::i32), CurDAG->getTargetConstant(0, DL, MVT::i32)), 0); ReplaceUses(SDValue(Node, 0), Res); ReplaceUses(SDValue(Node, 1), CopyFP.getValue(1)); CurDAG->RemoveDeadNode(Node); auto &MF = CurDAG->getMachineFunction(); MF.getFrameInfo().setFrameAddressIsTaken(true); MF.getInfo()->setHasSwiftAsyncContext(true); return; } } } break; case ISD::INTRINSIC_WO_CHAIN: { unsigned IntNo = cast(Node->getOperand(0))->getZExtValue(); switch (IntNo) { default: break; case Intrinsic::aarch64_tagp: SelectTagP(Node); return; case Intrinsic::aarch64_neon_tbl2: SelectTable(Node, 2, VT == MVT::v8i8 ? AArch64::TBLv8i8Two : AArch64::TBLv16i8Two, false); return; case Intrinsic::aarch64_neon_tbl3: SelectTable(Node, 3, VT == MVT::v8i8 ? AArch64::TBLv8i8Three : AArch64::TBLv16i8Three, false); return; case Intrinsic::aarch64_neon_tbl4: SelectTable(Node, 4, VT == MVT::v8i8 ? AArch64::TBLv8i8Four : AArch64::TBLv16i8Four, false); return; case Intrinsic::aarch64_neon_tbx2: SelectTable(Node, 2, VT == MVT::v8i8 ? AArch64::TBXv8i8Two : AArch64::TBXv16i8Two, true); return; case Intrinsic::aarch64_neon_tbx3: SelectTable(Node, 3, VT == MVT::v8i8 ? AArch64::TBXv8i8Three : AArch64::TBXv16i8Three, true); return; case Intrinsic::aarch64_neon_tbx4: SelectTable(Node, 4, VT == MVT::v8i8 ? AArch64::TBXv8i8Four : AArch64::TBXv16i8Four, true); return; case Intrinsic::aarch64_sve_srshl_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SRSHL_VG2_2ZZ_B, AArch64::SRSHL_VG2_2ZZ_H, AArch64::SRSHL_VG2_2ZZ_S, AArch64::SRSHL_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_srshl_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SRSHL_VG4_4ZZ_B, AArch64::SRSHL_VG4_4ZZ_H, AArch64::SRSHL_VG4_4ZZ_S, AArch64::SRSHL_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_urshl_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::URSHL_VG2_2ZZ_B, AArch64::URSHL_VG2_2ZZ_H, AArch64::URSHL_VG2_2ZZ_S, AArch64::URSHL_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_urshl_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::URSHL_VG4_4ZZ_B, AArch64::URSHL_VG4_4ZZ_H, AArch64::URSHL_VG4_4ZZ_S, AArch64::URSHL_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_srshl_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SRSHL_VG2_2Z2Z_B, AArch64::SRSHL_VG2_2Z2Z_H, AArch64::SRSHL_VG2_2Z2Z_S, AArch64::SRSHL_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_srshl_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SRSHL_VG4_4Z4Z_B, AArch64::SRSHL_VG4_4Z4Z_H, AArch64::SRSHL_VG4_4Z4Z_S, AArch64::SRSHL_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_urshl_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::URSHL_VG2_2Z2Z_B, AArch64::URSHL_VG2_2Z2Z_H, AArch64::URSHL_VG2_2Z2Z_S, AArch64::URSHL_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_urshl_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::URSHL_VG4_4Z4Z_B, AArch64::URSHL_VG4_4Z4Z_H, AArch64::URSHL_VG4_4Z4Z_S, AArch64::URSHL_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_sqdmulh_single_vgx2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SQDMULH_VG2_2ZZ_B, AArch64::SQDMULH_VG2_2ZZ_H, AArch64::SQDMULH_VG2_2ZZ_S, AArch64::SQDMULH_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_sqdmulh_single_vgx4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SQDMULH_VG4_4ZZ_B, AArch64::SQDMULH_VG4_4ZZ_H, AArch64::SQDMULH_VG4_4ZZ_S, AArch64::SQDMULH_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_sqdmulh_vgx2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SQDMULH_VG2_2Z2Z_B, AArch64::SQDMULH_VG2_2Z2Z_H, AArch64::SQDMULH_VG2_2Z2Z_S, AArch64::SQDMULH_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_sqdmulh_vgx4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SQDMULH_VG4_4Z4Z_B, AArch64::SQDMULH_VG4_4Z4Z_H, AArch64::SQDMULH_VG4_4Z4Z_S, AArch64::SQDMULH_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_whilege_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILEGE_2PXX_B, AArch64::WHILEGE_2PXX_H, AArch64::WHILEGE_2PXX_S, AArch64::WHILEGE_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_whilegt_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILEGT_2PXX_B, AArch64::WHILEGT_2PXX_H, AArch64::WHILEGT_2PXX_S, AArch64::WHILEGT_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_whilehi_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILEHI_2PXX_B, AArch64::WHILEHI_2PXX_H, AArch64::WHILEHI_2PXX_S, AArch64::WHILEHI_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_whilehs_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILEHS_2PXX_B, AArch64::WHILEHS_2PXX_H, AArch64::WHILEHS_2PXX_S, AArch64::WHILEHS_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_whilele_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILELE_2PXX_B, AArch64::WHILELE_2PXX_H, AArch64::WHILELE_2PXX_S, AArch64::WHILELE_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_whilelo_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILELO_2PXX_B, AArch64::WHILELO_2PXX_H, AArch64::WHILELO_2PXX_S, AArch64::WHILELO_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_whilels_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILELS_2PXX_B, AArch64::WHILELS_2PXX_H, AArch64::WHILELS_2PXX_S, AArch64::WHILELS_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_whilelt_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::WHILELT_2PXX_B, AArch64::WHILELT_2PXX_H, AArch64::WHILELT_2PXX_S, AArch64::WHILELT_2PXX_D})) SelectWhilePair(Node, Op); return; case Intrinsic::aarch64_sve_smax_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMAX_VG2_2ZZ_B, AArch64::SMAX_VG2_2ZZ_H, AArch64::SMAX_VG2_2ZZ_S, AArch64::SMAX_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_umax_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMAX_VG2_2ZZ_B, AArch64::UMAX_VG2_2ZZ_H, AArch64::UMAX_VG2_2ZZ_S, AArch64::UMAX_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_fmax_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAX_VG2_2ZZ_H, AArch64::FMAX_VG2_2ZZ_S, AArch64::FMAX_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_smax_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMAX_VG4_4ZZ_B, AArch64::SMAX_VG4_4ZZ_H, AArch64::SMAX_VG4_4ZZ_S, AArch64::SMAX_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_umax_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMAX_VG4_4ZZ_B, AArch64::UMAX_VG4_4ZZ_H, AArch64::UMAX_VG4_4ZZ_S, AArch64::UMAX_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_fmax_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAX_VG4_4ZZ_H, AArch64::FMAX_VG4_4ZZ_S, AArch64::FMAX_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_smin_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMIN_VG2_2ZZ_B, AArch64::SMIN_VG2_2ZZ_H, AArch64::SMIN_VG2_2ZZ_S, AArch64::SMIN_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_umin_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMIN_VG2_2ZZ_B, AArch64::UMIN_VG2_2ZZ_H, AArch64::UMIN_VG2_2ZZ_S, AArch64::UMIN_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_fmin_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMIN_VG2_2ZZ_H, AArch64::FMIN_VG2_2ZZ_S, AArch64::FMIN_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_smin_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMIN_VG4_4ZZ_B, AArch64::SMIN_VG4_4ZZ_H, AArch64::SMIN_VG4_4ZZ_S, AArch64::SMIN_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_umin_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMIN_VG4_4ZZ_B, AArch64::UMIN_VG4_4ZZ_H, AArch64::UMIN_VG4_4ZZ_S, AArch64::UMIN_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_fmin_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMIN_VG4_4ZZ_H, AArch64::FMIN_VG4_4ZZ_S, AArch64::FMIN_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_smax_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMAX_VG2_2Z2Z_B, AArch64::SMAX_VG2_2Z2Z_H, AArch64::SMAX_VG2_2Z2Z_S, AArch64::SMAX_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_umax_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMAX_VG2_2Z2Z_B, AArch64::UMAX_VG2_2Z2Z_H, AArch64::UMAX_VG2_2Z2Z_S, AArch64::UMAX_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_fmax_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAX_VG2_2Z2Z_H, AArch64::FMAX_VG2_2Z2Z_S, AArch64::FMAX_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_smax_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMAX_VG4_4Z4Z_B, AArch64::SMAX_VG4_4Z4Z_H, AArch64::SMAX_VG4_4Z4Z_S, AArch64::SMAX_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_umax_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMAX_VG4_4Z4Z_B, AArch64::UMAX_VG4_4Z4Z_H, AArch64::UMAX_VG4_4Z4Z_S, AArch64::UMAX_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_fmax_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAX_VG4_4Z4Z_H, AArch64::FMAX_VG4_4Z4Z_S, AArch64::FMAX_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_smin_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMIN_VG2_2Z2Z_B, AArch64::SMIN_VG2_2Z2Z_H, AArch64::SMIN_VG2_2Z2Z_S, AArch64::SMIN_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_umin_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMIN_VG2_2Z2Z_B, AArch64::UMIN_VG2_2Z2Z_H, AArch64::UMIN_VG2_2Z2Z_S, AArch64::UMIN_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_fmin_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMIN_VG2_2Z2Z_H, AArch64::FMIN_VG2_2Z2Z_S, AArch64::FMIN_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_smin_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SMIN_VG4_4Z4Z_B, AArch64::SMIN_VG4_4Z4Z_H, AArch64::SMIN_VG4_4Z4Z_S, AArch64::SMIN_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_umin_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UMIN_VG4_4Z4Z_B, AArch64::UMIN_VG4_4Z4Z_H, AArch64::UMIN_VG4_4Z4Z_S, AArch64::UMIN_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_fmin_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMIN_VG4_4Z4Z_H, AArch64::FMIN_VG4_4Z4Z_S, AArch64::FMIN_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_fmaxnm_single_x2 : if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAXNM_VG2_2ZZ_H, AArch64::FMAXNM_VG2_2ZZ_S, AArch64::FMAXNM_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_fmaxnm_single_x4 : if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAXNM_VG4_4ZZ_H, AArch64::FMAXNM_VG4_4ZZ_S, AArch64::FMAXNM_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_fminnm_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMINNM_VG2_2ZZ_H, AArch64::FMINNM_VG2_2ZZ_S, AArch64::FMINNM_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_fminnm_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMINNM_VG4_4ZZ_H, AArch64::FMINNM_VG4_4ZZ_S, AArch64::FMINNM_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_fmaxnm_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAXNM_VG2_2Z2Z_H, AArch64::FMAXNM_VG2_2Z2Z_S, AArch64::FMAXNM_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_fmaxnm_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMAXNM_VG4_4Z4Z_H, AArch64::FMAXNM_VG4_4Z4Z_S, AArch64::FMAXNM_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_fminnm_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMINNM_VG2_2Z2Z_H, AArch64::FMINNM_VG2_2Z2Z_S, AArch64::FMINNM_VG2_2Z2Z_D})) SelectDestructiveMultiIntrinsic(Node, 2, true, Op); return; case Intrinsic::aarch64_sve_fminnm_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FMINNM_VG4_4Z4Z_H, AArch64::FMINNM_VG4_4Z4Z_S, AArch64::FMINNM_VG4_4Z4Z_D})) SelectDestructiveMultiIntrinsic(Node, 4, true, Op); return; case Intrinsic::aarch64_sve_fcvts_x2: SelectCVTIntrinsic(Node, 2, AArch64::FCVTZS_2Z2Z_StoS); return; case Intrinsic::aarch64_sve_scvtf_x2: SelectCVTIntrinsic(Node, 2, AArch64::SCVTF_2Z2Z_StoS); return; case Intrinsic::aarch64_sve_fcvtu_x2: SelectCVTIntrinsic(Node, 2, AArch64::FCVTZU_2Z2Z_StoS); return; case Intrinsic::aarch64_sve_ucvtf_x2: SelectCVTIntrinsic(Node, 2, AArch64::UCVTF_2Z2Z_StoS); return; case Intrinsic::aarch64_sve_fcvts_x4: SelectCVTIntrinsic(Node, 4, AArch64::FCVTZS_4Z4Z_StoS); return; case Intrinsic::aarch64_sve_scvtf_x4: SelectCVTIntrinsic(Node, 4, AArch64::SCVTF_4Z4Z_StoS); return; case Intrinsic::aarch64_sve_fcvtu_x4: SelectCVTIntrinsic(Node, 4, AArch64::FCVTZU_4Z4Z_StoS); return; case Intrinsic::aarch64_sve_ucvtf_x4: SelectCVTIntrinsic(Node, 4, AArch64::UCVTF_4Z4Z_StoS); return; case Intrinsic::aarch64_sve_sclamp_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SCLAMP_VG2_2Z2Z_B, AArch64::SCLAMP_VG2_2Z2Z_H, AArch64::SCLAMP_VG2_2Z2Z_S, AArch64::SCLAMP_VG2_2Z2Z_D})) SelectClamp(Node, 2, Op); return; case Intrinsic::aarch64_sve_uclamp_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UCLAMP_VG2_2Z2Z_B, AArch64::UCLAMP_VG2_2Z2Z_H, AArch64::UCLAMP_VG2_2Z2Z_S, AArch64::UCLAMP_VG2_2Z2Z_D})) SelectClamp(Node, 2, Op); return; case Intrinsic::aarch64_sve_fclamp_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FCLAMP_VG2_2Z2Z_H, AArch64::FCLAMP_VG2_2Z2Z_S, AArch64::FCLAMP_VG2_2Z2Z_D})) SelectClamp(Node, 2, Op); return; case Intrinsic::aarch64_sve_sclamp_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::SCLAMP_VG4_4Z4Z_B, AArch64::SCLAMP_VG4_4Z4Z_H, AArch64::SCLAMP_VG4_4Z4Z_S, AArch64::SCLAMP_VG4_4Z4Z_D})) SelectClamp(Node, 4, Op); return; case Intrinsic::aarch64_sve_uclamp_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UCLAMP_VG4_4Z4Z_B, AArch64::UCLAMP_VG4_4Z4Z_H, AArch64::UCLAMP_VG4_4Z4Z_S, AArch64::UCLAMP_VG4_4Z4Z_D})) SelectClamp(Node, 4, Op); return; case Intrinsic::aarch64_sve_fclamp_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::FCLAMP_VG4_4Z4Z_H, AArch64::FCLAMP_VG4_4Z4Z_S, AArch64::FCLAMP_VG4_4Z4Z_D})) SelectClamp(Node, 4, Op); return; case Intrinsic::aarch64_sve_add_single_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::ADD_VG2_2ZZ_B, AArch64::ADD_VG2_2ZZ_H, AArch64::ADD_VG2_2ZZ_S, AArch64::ADD_VG2_2ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 2, false, Op); return; case Intrinsic::aarch64_sve_add_single_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::ADD_VG4_4ZZ_B, AArch64::ADD_VG4_4ZZ_H, AArch64::ADD_VG4_4ZZ_S, AArch64::ADD_VG4_4ZZ_D})) SelectDestructiveMultiIntrinsic(Node, 4, false, Op); return; case Intrinsic::aarch64_sve_zip_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::ZIP_VG2_2ZZZ_B, AArch64::ZIP_VG2_2ZZZ_H, AArch64::ZIP_VG2_2ZZZ_S, AArch64::ZIP_VG2_2ZZZ_D})) SelectUnaryMultiIntrinsic(Node, 2, /*IsTupleInput=*/false, Op); return; case Intrinsic::aarch64_sve_zipq_x2: SelectUnaryMultiIntrinsic(Node, 2, /*IsTupleInput=*/false, AArch64::ZIP_VG2_2ZZZ_Q); return; case Intrinsic::aarch64_sve_zip_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::ZIP_VG4_4Z4Z_B, AArch64::ZIP_VG4_4Z4Z_H, AArch64::ZIP_VG4_4Z4Z_S, AArch64::ZIP_VG4_4Z4Z_D})) SelectUnaryMultiIntrinsic(Node, 4, /*IsTupleInput=*/true, Op); return; case Intrinsic::aarch64_sve_zipq_x4: SelectUnaryMultiIntrinsic(Node, 4, /*IsTupleInput=*/true, AArch64::ZIP_VG4_4Z4Z_Q); return; case Intrinsic::aarch64_sve_uzp_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UZP_VG2_2ZZZ_B, AArch64::UZP_VG2_2ZZZ_H, AArch64::UZP_VG2_2ZZZ_S, AArch64::UZP_VG2_2ZZZ_D})) SelectUnaryMultiIntrinsic(Node, 2, /*IsTupleInput=*/false, Op); return; case Intrinsic::aarch64_sve_uzpq_x2: SelectUnaryMultiIntrinsic(Node, 2, /*IsTupleInput=*/false, AArch64::UZP_VG2_2ZZZ_Q); return; case Intrinsic::aarch64_sve_uzp_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::UZP_VG4_4Z4Z_B, AArch64::UZP_VG4_4Z4Z_H, AArch64::UZP_VG4_4Z4Z_S, AArch64::UZP_VG4_4Z4Z_D})) SelectUnaryMultiIntrinsic(Node, 4, /*IsTupleInput=*/true, Op); return; case Intrinsic::aarch64_sve_uzpq_x4: SelectUnaryMultiIntrinsic(Node, 4, /*IsTupleInput=*/true, AArch64::UZP_VG4_4Z4Z_Q); return; case Intrinsic::aarch64_sve_frinta_x2: SelectFrintFromVT(Node, 2, AArch64::FRINTA_2Z2Z_S); return; case Intrinsic::aarch64_sve_frinta_x4: SelectFrintFromVT(Node, 4, AArch64::FRINTA_4Z4Z_S); return; case Intrinsic::aarch64_sve_frintm_x2: SelectFrintFromVT(Node, 2, AArch64::FRINTM_2Z2Z_S); return; case Intrinsic::aarch64_sve_frintm_x4: SelectFrintFromVT(Node, 4, AArch64::FRINTM_4Z4Z_S); return; case Intrinsic::aarch64_sve_frintn_x2: SelectFrintFromVT(Node, 2, AArch64::FRINTN_2Z2Z_S); return; case Intrinsic::aarch64_sve_frintn_x4: SelectFrintFromVT(Node, 4, AArch64::FRINTN_4Z4Z_S); return; case Intrinsic::aarch64_sve_frintp_x2: SelectFrintFromVT(Node, 2, AArch64::FRINTP_2Z2Z_S); return; case Intrinsic::aarch64_sve_frintp_x4: SelectFrintFromVT(Node, 4, AArch64::FRINTP_4Z4Z_S); return; case Intrinsic::aarch64_sve_sunpk_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::SUNPK_VG2_2ZZ_H, AArch64::SUNPK_VG2_2ZZ_S, AArch64::SUNPK_VG2_2ZZ_D})) SelectUnaryMultiIntrinsic(Node, 2, /*IsTupleInput=*/false, Op); return; case Intrinsic::aarch64_sve_uunpk_x2: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::UUNPK_VG2_2ZZ_H, AArch64::UUNPK_VG2_2ZZ_S, AArch64::UUNPK_VG2_2ZZ_D})) SelectUnaryMultiIntrinsic(Node, 2, /*IsTupleInput=*/false, Op); return; case Intrinsic::aarch64_sve_sunpk_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::SUNPK_VG4_4Z2Z_H, AArch64::SUNPK_VG4_4Z2Z_S, AArch64::SUNPK_VG4_4Z2Z_D})) SelectUnaryMultiIntrinsic(Node, 4, /*IsTupleInput=*/true, Op); return; case Intrinsic::aarch64_sve_uunpk_x4: if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {0, AArch64::UUNPK_VG4_4Z2Z_H, AArch64::UUNPK_VG4_4Z2Z_S, AArch64::UUNPK_VG4_4Z2Z_D})) SelectUnaryMultiIntrinsic(Node, 4, /*IsTupleInput=*/true, Op); return; case Intrinsic::aarch64_sve_pext_x2: { if (auto Op = SelectOpcodeFromVT( Node->getValueType(0), {AArch64::PEXT_2PCI_B, AArch64::PEXT_2PCI_H, AArch64::PEXT_2PCI_S, AArch64::PEXT_2PCI_D})) SelectPExtPair(Node, Op); return; } } break; } case ISD::INTRINSIC_VOID: { unsigned IntNo = cast(Node->getOperand(1))->getZExtValue(); if (Node->getNumOperands() >= 3) VT = Node->getOperand(2)->getValueType(0); switch (IntNo) { default: break; case Intrinsic::aarch64_neon_st1x2: { if (VT == MVT::v8i8) { SelectStore(Node, 2, AArch64::ST1Twov8b); return; } else if (VT == MVT::v16i8) { SelectStore(Node, 2, AArch64::ST1Twov16b); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectStore(Node, 2, AArch64::ST1Twov4h); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectStore(Node, 2, AArch64::ST1Twov8h); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectStore(Node, 2, AArch64::ST1Twov2s); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectStore(Node, 2, AArch64::ST1Twov4s); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectStore(Node, 2, AArch64::ST1Twov2d); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectStore(Node, 2, AArch64::ST1Twov1d); return; } break; } case Intrinsic::aarch64_neon_st1x3: { if (VT == MVT::v8i8) { SelectStore(Node, 3, AArch64::ST1Threev8b); return; } else if (VT == MVT::v16i8) { SelectStore(Node, 3, AArch64::ST1Threev16b); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectStore(Node, 3, AArch64::ST1Threev4h); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectStore(Node, 3, AArch64::ST1Threev8h); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectStore(Node, 3, AArch64::ST1Threev2s); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectStore(Node, 3, AArch64::ST1Threev4s); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectStore(Node, 3, AArch64::ST1Threev2d); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectStore(Node, 3, AArch64::ST1Threev1d); return; } break; } case Intrinsic::aarch64_neon_st1x4: { if (VT == MVT::v8i8) { SelectStore(Node, 4, AArch64::ST1Fourv8b); return; } else if (VT == MVT::v16i8) { SelectStore(Node, 4, AArch64::ST1Fourv16b); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectStore(Node, 4, AArch64::ST1Fourv4h); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectStore(Node, 4, AArch64::ST1Fourv8h); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectStore(Node, 4, AArch64::ST1Fourv2s); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectStore(Node, 4, AArch64::ST1Fourv4s); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectStore(Node, 4, AArch64::ST1Fourv2d); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectStore(Node, 4, AArch64::ST1Fourv1d); return; } break; } case Intrinsic::aarch64_neon_st2: { if (VT == MVT::v8i8) { SelectStore(Node, 2, AArch64::ST2Twov8b); return; } else if (VT == MVT::v16i8) { SelectStore(Node, 2, AArch64::ST2Twov16b); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectStore(Node, 2, AArch64::ST2Twov4h); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectStore(Node, 2, AArch64::ST2Twov8h); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectStore(Node, 2, AArch64::ST2Twov2s); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectStore(Node, 2, AArch64::ST2Twov4s); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectStore(Node, 2, AArch64::ST2Twov2d); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectStore(Node, 2, AArch64::ST1Twov1d); return; } break; } case Intrinsic::aarch64_neon_st3: { if (VT == MVT::v8i8) { SelectStore(Node, 3, AArch64::ST3Threev8b); return; } else if (VT == MVT::v16i8) { SelectStore(Node, 3, AArch64::ST3Threev16b); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectStore(Node, 3, AArch64::ST3Threev4h); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectStore(Node, 3, AArch64::ST3Threev8h); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectStore(Node, 3, AArch64::ST3Threev2s); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectStore(Node, 3, AArch64::ST3Threev4s); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectStore(Node, 3, AArch64::ST3Threev2d); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectStore(Node, 3, AArch64::ST1Threev1d); return; } break; } case Intrinsic::aarch64_neon_st4: { if (VT == MVT::v8i8) { SelectStore(Node, 4, AArch64::ST4Fourv8b); return; } else if (VT == MVT::v16i8) { SelectStore(Node, 4, AArch64::ST4Fourv16b); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectStore(Node, 4, AArch64::ST4Fourv4h); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectStore(Node, 4, AArch64::ST4Fourv8h); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectStore(Node, 4, AArch64::ST4Fourv2s); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectStore(Node, 4, AArch64::ST4Fourv4s); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectStore(Node, 4, AArch64::ST4Fourv2d); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectStore(Node, 4, AArch64::ST1Fourv1d); return; } break; } case Intrinsic::aarch64_neon_st2lane: { if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectStoreLane(Node, 2, AArch64::ST2i8); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectStoreLane(Node, 2, AArch64::ST2i16); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectStoreLane(Node, 2, AArch64::ST2i32); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectStoreLane(Node, 2, AArch64::ST2i64); return; } break; } case Intrinsic::aarch64_neon_st3lane: { if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectStoreLane(Node, 3, AArch64::ST3i8); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectStoreLane(Node, 3, AArch64::ST3i16); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectStoreLane(Node, 3, AArch64::ST3i32); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectStoreLane(Node, 3, AArch64::ST3i64); return; } break; } case Intrinsic::aarch64_neon_st4lane: { if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectStoreLane(Node, 4, AArch64::ST4i8); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectStoreLane(Node, 4, AArch64::ST4i16); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectStoreLane(Node, 4, AArch64::ST4i32); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectStoreLane(Node, 4, AArch64::ST4i64); return; } break; } case Intrinsic::aarch64_sve_st2: { if (VT == MVT::nxv16i8) { SelectPredicatedStore(Node, 2, 0, AArch64::ST2B, AArch64::ST2B_IMM); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedStore(Node, 2, 1, AArch64::ST2H, AArch64::ST2H_IMM); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedStore(Node, 2, 2, AArch64::ST2W, AArch64::ST2W_IMM); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedStore(Node, 2, 3, AArch64::ST2D, AArch64::ST2D_IMM); return; } break; } case Intrinsic::aarch64_sve_st3: { if (VT == MVT::nxv16i8) { SelectPredicatedStore(Node, 3, 0, AArch64::ST3B, AArch64::ST3B_IMM); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedStore(Node, 3, 1, AArch64::ST3H, AArch64::ST3H_IMM); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedStore(Node, 3, 2, AArch64::ST3W, AArch64::ST3W_IMM); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedStore(Node, 3, 3, AArch64::ST3D, AArch64::ST3D_IMM); return; } break; } case Intrinsic::aarch64_sve_st4: { if (VT == MVT::nxv16i8) { SelectPredicatedStore(Node, 4, 0, AArch64::ST4B, AArch64::ST4B_IMM); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedStore(Node, 4, 1, AArch64::ST4H, AArch64::ST4H_IMM); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedStore(Node, 4, 2, AArch64::ST4W, AArch64::ST4W_IMM); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedStore(Node, 4, 3, AArch64::ST4D, AArch64::ST4D_IMM); return; } break; } } break; } case AArch64ISD::LD2post: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 2, AArch64::LD2Twov8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 2, AArch64::LD2Twov16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 2, AArch64::LD2Twov4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 2, AArch64::LD2Twov8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 2, AArch64::LD2Twov2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 2, AArch64::LD2Twov4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 2, AArch64::LD1Twov1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 2, AArch64::LD2Twov2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD3post: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 3, AArch64::LD3Threev8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 3, AArch64::LD3Threev16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 3, AArch64::LD3Threev4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 3, AArch64::LD3Threev8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 3, AArch64::LD3Threev2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 3, AArch64::LD3Threev4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 3, AArch64::LD1Threev1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 3, AArch64::LD3Threev2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD4post: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 4, AArch64::LD4Fourv8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 4, AArch64::LD4Fourv16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 4, AArch64::LD4Fourv4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 4, AArch64::LD4Fourv8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 4, AArch64::LD4Fourv2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 4, AArch64::LD4Fourv4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 4, AArch64::LD1Fourv1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 4, AArch64::LD4Fourv2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD1x2post: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 2, AArch64::LD1Twov8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 2, AArch64::LD1Twov16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 2, AArch64::LD1Twov4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 2, AArch64::LD1Twov8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 2, AArch64::LD1Twov2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 2, AArch64::LD1Twov4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 2, AArch64::LD1Twov1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 2, AArch64::LD1Twov2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD1x3post: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 3, AArch64::LD1Threev8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 3, AArch64::LD1Threev16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 3, AArch64::LD1Threev4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 3, AArch64::LD1Threev8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 3, AArch64::LD1Threev2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 3, AArch64::LD1Threev4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 3, AArch64::LD1Threev1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 3, AArch64::LD1Threev2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD1x4post: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 4, AArch64::LD1Fourv8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 4, AArch64::LD1Fourv16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 4, AArch64::LD1Fourv4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 4, AArch64::LD1Fourv8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 4, AArch64::LD1Fourv2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 4, AArch64::LD1Fourv4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 4, AArch64::LD1Fourv1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 4, AArch64::LD1Fourv2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD1DUPpost: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 1, AArch64::LD1Rv8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 1, AArch64::LD1Rv16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 1, AArch64::LD1Rv4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 1, AArch64::LD1Rv8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 1, AArch64::LD1Rv2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 1, AArch64::LD1Rv4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 1, AArch64::LD1Rv1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 1, AArch64::LD1Rv2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD2DUPpost: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 2, AArch64::LD2Rv8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 2, AArch64::LD2Rv16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 2, AArch64::LD2Rv4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 2, AArch64::LD2Rv8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 2, AArch64::LD2Rv2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 2, AArch64::LD2Rv4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 2, AArch64::LD2Rv1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 2, AArch64::LD2Rv2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD3DUPpost: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 3, AArch64::LD3Rv8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 3, AArch64::LD3Rv16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 3, AArch64::LD3Rv4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 3, AArch64::LD3Rv8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 3, AArch64::LD3Rv2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 3, AArch64::LD3Rv4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 3, AArch64::LD3Rv1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 3, AArch64::LD3Rv2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD4DUPpost: { if (VT == MVT::v8i8) { SelectPostLoad(Node, 4, AArch64::LD4Rv8b_POST, AArch64::dsub0); return; } else if (VT == MVT::v16i8) { SelectPostLoad(Node, 4, AArch64::LD4Rv16b_POST, AArch64::qsub0); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostLoad(Node, 4, AArch64::LD4Rv4h_POST, AArch64::dsub0); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostLoad(Node, 4, AArch64::LD4Rv8h_POST, AArch64::qsub0); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostLoad(Node, 4, AArch64::LD4Rv2s_POST, AArch64::dsub0); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostLoad(Node, 4, AArch64::LD4Rv4s_POST, AArch64::qsub0); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostLoad(Node, 4, AArch64::LD4Rv1d_POST, AArch64::dsub0); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostLoad(Node, 4, AArch64::LD4Rv2d_POST, AArch64::qsub0); return; } break; } case AArch64ISD::LD1LANEpost: { if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectPostLoadLane(Node, 1, AArch64::LD1i8_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectPostLoadLane(Node, 1, AArch64::LD1i16_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectPostLoadLane(Node, 1, AArch64::LD1i32_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectPostLoadLane(Node, 1, AArch64::LD1i64_POST); return; } break; } case AArch64ISD::LD2LANEpost: { if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectPostLoadLane(Node, 2, AArch64::LD2i8_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectPostLoadLane(Node, 2, AArch64::LD2i16_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectPostLoadLane(Node, 2, AArch64::LD2i32_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectPostLoadLane(Node, 2, AArch64::LD2i64_POST); return; } break; } case AArch64ISD::LD3LANEpost: { if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectPostLoadLane(Node, 3, AArch64::LD3i8_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectPostLoadLane(Node, 3, AArch64::LD3i16_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectPostLoadLane(Node, 3, AArch64::LD3i32_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectPostLoadLane(Node, 3, AArch64::LD3i64_POST); return; } break; } case AArch64ISD::LD4LANEpost: { if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectPostLoadLane(Node, 4, AArch64::LD4i8_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectPostLoadLane(Node, 4, AArch64::LD4i16_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectPostLoadLane(Node, 4, AArch64::LD4i32_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectPostLoadLane(Node, 4, AArch64::LD4i64_POST); return; } break; } case AArch64ISD::ST2post: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v8i8) { SelectPostStore(Node, 2, AArch64::ST2Twov8b_POST); return; } else if (VT == MVT::v16i8) { SelectPostStore(Node, 2, AArch64::ST2Twov16b_POST); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostStore(Node, 2, AArch64::ST2Twov4h_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostStore(Node, 2, AArch64::ST2Twov8h_POST); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostStore(Node, 2, AArch64::ST2Twov2s_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostStore(Node, 2, AArch64::ST2Twov4s_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostStore(Node, 2, AArch64::ST2Twov2d_POST); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostStore(Node, 2, AArch64::ST1Twov1d_POST); return; } break; } case AArch64ISD::ST3post: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v8i8) { SelectPostStore(Node, 3, AArch64::ST3Threev8b_POST); return; } else if (VT == MVT::v16i8) { SelectPostStore(Node, 3, AArch64::ST3Threev16b_POST); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostStore(Node, 3, AArch64::ST3Threev4h_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostStore(Node, 3, AArch64::ST3Threev8h_POST); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostStore(Node, 3, AArch64::ST3Threev2s_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostStore(Node, 3, AArch64::ST3Threev4s_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostStore(Node, 3, AArch64::ST3Threev2d_POST); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostStore(Node, 3, AArch64::ST1Threev1d_POST); return; } break; } case AArch64ISD::ST4post: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v8i8) { SelectPostStore(Node, 4, AArch64::ST4Fourv8b_POST); return; } else if (VT == MVT::v16i8) { SelectPostStore(Node, 4, AArch64::ST4Fourv16b_POST); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostStore(Node, 4, AArch64::ST4Fourv4h_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostStore(Node, 4, AArch64::ST4Fourv8h_POST); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostStore(Node, 4, AArch64::ST4Fourv2s_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostStore(Node, 4, AArch64::ST4Fourv4s_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostStore(Node, 4, AArch64::ST4Fourv2d_POST); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostStore(Node, 4, AArch64::ST1Fourv1d_POST); return; } break; } case AArch64ISD::ST1x2post: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v8i8) { SelectPostStore(Node, 2, AArch64::ST1Twov8b_POST); return; } else if (VT == MVT::v16i8) { SelectPostStore(Node, 2, AArch64::ST1Twov16b_POST); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostStore(Node, 2, AArch64::ST1Twov4h_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostStore(Node, 2, AArch64::ST1Twov8h_POST); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostStore(Node, 2, AArch64::ST1Twov2s_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostStore(Node, 2, AArch64::ST1Twov4s_POST); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostStore(Node, 2, AArch64::ST1Twov1d_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostStore(Node, 2, AArch64::ST1Twov2d_POST); return; } break; } case AArch64ISD::ST1x3post: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v8i8) { SelectPostStore(Node, 3, AArch64::ST1Threev8b_POST); return; } else if (VT == MVT::v16i8) { SelectPostStore(Node, 3, AArch64::ST1Threev16b_POST); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostStore(Node, 3, AArch64::ST1Threev4h_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16 ) { SelectPostStore(Node, 3, AArch64::ST1Threev8h_POST); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostStore(Node, 3, AArch64::ST1Threev2s_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostStore(Node, 3, AArch64::ST1Threev4s_POST); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostStore(Node, 3, AArch64::ST1Threev1d_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostStore(Node, 3, AArch64::ST1Threev2d_POST); return; } break; } case AArch64ISD::ST1x4post: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v8i8) { SelectPostStore(Node, 4, AArch64::ST1Fourv8b_POST); return; } else if (VT == MVT::v16i8) { SelectPostStore(Node, 4, AArch64::ST1Fourv16b_POST); return; } else if (VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v4bf16) { SelectPostStore(Node, 4, AArch64::ST1Fourv4h_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v8f16 || VT == MVT::v8bf16) { SelectPostStore(Node, 4, AArch64::ST1Fourv8h_POST); return; } else if (VT == MVT::v2i32 || VT == MVT::v2f32) { SelectPostStore(Node, 4, AArch64::ST1Fourv2s_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v4f32) { SelectPostStore(Node, 4, AArch64::ST1Fourv4s_POST); return; } else if (VT == MVT::v1i64 || VT == MVT::v1f64) { SelectPostStore(Node, 4, AArch64::ST1Fourv1d_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v2f64) { SelectPostStore(Node, 4, AArch64::ST1Fourv2d_POST); return; } break; } case AArch64ISD::ST2LANEpost: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectPostStoreLane(Node, 2, AArch64::ST2i8_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectPostStoreLane(Node, 2, AArch64::ST2i16_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectPostStoreLane(Node, 2, AArch64::ST2i32_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectPostStoreLane(Node, 2, AArch64::ST2i64_POST); return; } break; } case AArch64ISD::ST3LANEpost: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectPostStoreLane(Node, 3, AArch64::ST3i8_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectPostStoreLane(Node, 3, AArch64::ST3i16_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectPostStoreLane(Node, 3, AArch64::ST3i32_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectPostStoreLane(Node, 3, AArch64::ST3i64_POST); return; } break; } case AArch64ISD::ST4LANEpost: { VT = Node->getOperand(1).getValueType(); if (VT == MVT::v16i8 || VT == MVT::v8i8) { SelectPostStoreLane(Node, 4, AArch64::ST4i8_POST); return; } else if (VT == MVT::v8i16 || VT == MVT::v4i16 || VT == MVT::v4f16 || VT == MVT::v8f16 || VT == MVT::v4bf16 || VT == MVT::v8bf16) { SelectPostStoreLane(Node, 4, AArch64::ST4i16_POST); return; } else if (VT == MVT::v4i32 || VT == MVT::v2i32 || VT == MVT::v4f32 || VT == MVT::v2f32) { SelectPostStoreLane(Node, 4, AArch64::ST4i32_POST); return; } else if (VT == MVT::v2i64 || VT == MVT::v1i64 || VT == MVT::v2f64 || VT == MVT::v1f64) { SelectPostStoreLane(Node, 4, AArch64::ST4i64_POST); return; } break; } case AArch64ISD::SVE_LD2_MERGE_ZERO: { if (VT == MVT::nxv16i8) { SelectPredicatedLoad(Node, 2, 0, AArch64::LD2B_IMM, AArch64::LD2B); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedLoad(Node, 2, 1, AArch64::LD2H_IMM, AArch64::LD2H); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedLoad(Node, 2, 2, AArch64::LD2W_IMM, AArch64::LD2W); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedLoad(Node, 2, 3, AArch64::LD2D_IMM, AArch64::LD2D); return; } break; } case AArch64ISD::SVE_LD3_MERGE_ZERO: { if (VT == MVT::nxv16i8) { SelectPredicatedLoad(Node, 3, 0, AArch64::LD3B_IMM, AArch64::LD3B); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedLoad(Node, 3, 1, AArch64::LD3H_IMM, AArch64::LD3H); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedLoad(Node, 3, 2, AArch64::LD3W_IMM, AArch64::LD3W); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedLoad(Node, 3, 3, AArch64::LD3D_IMM, AArch64::LD3D); return; } break; } case AArch64ISD::SVE_LD4_MERGE_ZERO: { if (VT == MVT::nxv16i8) { SelectPredicatedLoad(Node, 4, 0, AArch64::LD4B_IMM, AArch64::LD4B); return; } else if (VT == MVT::nxv8i16 || VT == MVT::nxv8f16 || VT == MVT::nxv8bf16) { SelectPredicatedLoad(Node, 4, 1, AArch64::LD4H_IMM, AArch64::LD4H); return; } else if (VT == MVT::nxv4i32 || VT == MVT::nxv4f32) { SelectPredicatedLoad(Node, 4, 2, AArch64::LD4W_IMM, AArch64::LD4W); return; } else if (VT == MVT::nxv2i64 || VT == MVT::nxv2f64) { SelectPredicatedLoad(Node, 4, 3, AArch64::LD4D_IMM, AArch64::LD4D); return; } break; } } // Select the default instruction SelectCode(Node); } /// createAArch64ISelDag - This pass converts a legalized DAG into a /// AArch64-specific DAG, ready for instruction scheduling. FunctionPass *llvm::createAArch64ISelDag(AArch64TargetMachine &TM, CodeGenOpt::Level OptLevel) { return new AArch64DAGToDAGISel(TM, OptLevel); } /// When \p PredVT is a scalable vector predicate in the form /// MVT::nxxi1, it builds the correspondent scalable vector of /// integers MVT::nxxi s.t. M x bits = 128. When targeting /// structured vectors (NumVec >1), the output data type is /// MVT::nxxi s.t. M x bits = 128. If the input /// PredVT is not in the form MVT::nxxi1, it returns an invalid /// EVT. static EVT getPackedVectorTypeFromPredicateType(LLVMContext &Ctx, EVT PredVT, unsigned NumVec) { assert(NumVec > 0 && NumVec < 5 && "Invalid number of vectors."); if (!PredVT.isScalableVector() || PredVT.getVectorElementType() != MVT::i1) return EVT(); if (PredVT != MVT::nxv16i1 && PredVT != MVT::nxv8i1 && PredVT != MVT::nxv4i1 && PredVT != MVT::nxv2i1) return EVT(); ElementCount EC = PredVT.getVectorElementCount(); EVT ScalarVT = EVT::getIntegerVT(Ctx, AArch64::SVEBitsPerBlock / EC.getKnownMinValue()); EVT MemVT = EVT::getVectorVT(Ctx, ScalarVT, EC * NumVec); return MemVT; } /// Return the EVT of the data associated to a memory operation in \p /// Root. If such EVT cannot be retrived, it returns an invalid EVT. static EVT getMemVTFromNode(LLVMContext &Ctx, SDNode *Root) { if (isa(Root)) return cast(Root)->getMemoryVT(); if (isa(Root)) return cast(Root)->getMemoryVT(); const unsigned Opcode = Root->getOpcode(); // For custom ISD nodes, we have to look at them individually to extract the // type of the data moved to/from memory. switch (Opcode) { case AArch64ISD::LD1_MERGE_ZERO: case AArch64ISD::LD1S_MERGE_ZERO: case AArch64ISD::LDNF1_MERGE_ZERO: case AArch64ISD::LDNF1S_MERGE_ZERO: return cast(Root->getOperand(3))->getVT(); case AArch64ISD::ST1_PRED: return cast(Root->getOperand(4))->getVT(); case AArch64ISD::SVE_LD2_MERGE_ZERO: return getPackedVectorTypeFromPredicateType( Ctx, Root->getOperand(1)->getValueType(0), /*NumVec=*/2); case AArch64ISD::SVE_LD3_MERGE_ZERO: return getPackedVectorTypeFromPredicateType( Ctx, Root->getOperand(1)->getValueType(0), /*NumVec=*/3); case AArch64ISD::SVE_LD4_MERGE_ZERO: return getPackedVectorTypeFromPredicateType( Ctx, Root->getOperand(1)->getValueType(0), /*NumVec=*/4); default: break; } if (Opcode != ISD::INTRINSIC_VOID && Opcode != ISD::INTRINSIC_W_CHAIN) return EVT(); switch (cast(Root->getOperand(1))->getZExtValue()) { default: return EVT(); case Intrinsic::aarch64_sme_ldr: case Intrinsic::aarch64_sme_str: return MVT::nxv16i8; case Intrinsic::aarch64_sve_prf: // We are using an SVE prefetch intrinsic. Type must be inferred from the // width of the predicate. return getPackedVectorTypeFromPredicateType( Ctx, Root->getOperand(2)->getValueType(0), /*NumVec=*/1); case Intrinsic::aarch64_sve_ld2_sret: return getPackedVectorTypeFromPredicateType( Ctx, Root->getOperand(2)->getValueType(0), /*NumVec=*/2); case Intrinsic::aarch64_sve_ld3_sret: return getPackedVectorTypeFromPredicateType( Ctx, Root->getOperand(2)->getValueType(0), /*NumVec=*/3); case Intrinsic::aarch64_sve_ld4_sret: return getPackedVectorTypeFromPredicateType( Ctx, Root->getOperand(2)->getValueType(0), /*NumVec=*/4); } } /// SelectAddrModeIndexedSVE - Attempt selection of the addressing mode: /// Base + OffImm * sizeof(MemVT) for Min >= OffImm <= Max /// where Root is the memory access using N for its address. template bool AArch64DAGToDAGISel::SelectAddrModeIndexedSVE(SDNode *Root, SDValue N, SDValue &Base, SDValue &OffImm) { const EVT MemVT = getMemVTFromNode(*(CurDAG->getContext()), Root); const DataLayout &DL = CurDAG->getDataLayout(); const MachineFrameInfo &MFI = MF->getFrameInfo(); if (N.getOpcode() == ISD::FrameIndex) { int FI = cast(N)->getIndex(); // We can only encode VL scaled offsets, so only fold in frame indexes // referencing SVE objects. if (MFI.getStackID(FI) == TargetStackID::ScalableVector) { Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); OffImm = CurDAG->getTargetConstant(0, SDLoc(N), MVT::i64); return true; } return false; } if (MemVT == EVT()) return false; if (N.getOpcode() != ISD::ADD) return false; SDValue VScale = N.getOperand(1); if (VScale.getOpcode() != ISD::VSCALE) return false; TypeSize TS = MemVT.getSizeInBits(); int64_t MemWidthBytes = static_cast(TS.getKnownMinValue()) / 8; int64_t MulImm = cast(VScale.getOperand(0))->getSExtValue(); if ((MulImm % MemWidthBytes) != 0) return false; int64_t Offset = MulImm / MemWidthBytes; if (Offset < Min || Offset > Max) return false; Base = N.getOperand(0); if (Base.getOpcode() == ISD::FrameIndex) { int FI = cast(Base)->getIndex(); // We can only encode VL scaled offsets, so only fold in frame indexes // referencing SVE objects. if (MFI.getStackID(FI) == TargetStackID::ScalableVector) Base = CurDAG->getTargetFrameIndex(FI, TLI->getPointerTy(DL)); } OffImm = CurDAG->getTargetConstant(Offset, SDLoc(N), MVT::i64); return true; } /// Select register plus register addressing mode for SVE, with scaled /// offset. bool AArch64DAGToDAGISel::SelectSVERegRegAddrMode(SDValue N, unsigned Scale, SDValue &Base, SDValue &Offset) { if (N.getOpcode() != ISD::ADD) return false; // Process an ADD node. const SDValue LHS = N.getOperand(0); const SDValue RHS = N.getOperand(1); // 8 bit data does not come with the SHL node, so it is treated // separately. if (Scale == 0) { Base = LHS; Offset = RHS; return true; } if (auto C = dyn_cast(RHS)) { int64_t ImmOff = C->getSExtValue(); unsigned Size = 1 << Scale; // To use the reg+reg addressing mode, the immediate must be a multiple of // the vector element's byte size. if (ImmOff % Size) return false; SDLoc DL(N); Base = LHS; Offset = CurDAG->getTargetConstant(ImmOff >> Scale, DL, MVT::i64); SDValue Ops[] = {Offset}; SDNode *MI = CurDAG->getMachineNode(AArch64::MOVi64imm, DL, MVT::i64, Ops); Offset = SDValue(MI, 0); return true; } // Check if the RHS is a shift node with a constant. if (RHS.getOpcode() != ISD::SHL) return false; const SDValue ShiftRHS = RHS.getOperand(1); if (auto *C = dyn_cast(ShiftRHS)) if (C->getZExtValue() == Scale) { Base = LHS; Offset = RHS.getOperand(0); return true; } return false; } bool AArch64DAGToDAGISel::SelectAllActivePredicate(SDValue N) { const AArch64TargetLowering *TLI = static_cast(getTargetLowering()); return TLI->isAllActivePredicate(*CurDAG, N); } bool AArch64DAGToDAGISel::SelectAnyPredicate(SDValue N) { EVT VT = N.getValueType(); return VT.isScalableVector() && VT.getVectorElementType() == MVT::i1; } bool AArch64DAGToDAGISel::SelectSMETileSlice(SDValue N, unsigned MaxSize, SDValue &Base, SDValue &Offset, unsigned Scale) { // Try to untangle an ADD node into a 'reg + offset' if (N.getOpcode() == ISD::ADD) if (auto C = dyn_cast(N.getOperand(1))) { int64_t ImmOff = C->getSExtValue(); if ((ImmOff > 0 && ImmOff <= MaxSize && (ImmOff % Scale == 0))) { Base = N.getOperand(0); Offset = CurDAG->getTargetConstant(ImmOff / Scale, SDLoc(N), MVT::i64); return true; } } // By default, just match reg + 0. Base = N; Offset = CurDAG->getTargetConstant(0, SDLoc(N), MVT::i64); return true; }