Extracts an TargetX86Base target which will be used as the common X86{32,64} implementation.

src/IceTargetLoweringX8632.h

Index: src/IceTargetLoweringX8632.h
diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h
index 6fce261f086b2fc9cd57e245803070e3bc4afb56..30f6e6e0b7d4beec0b63259eadab592a0a0065cd 100644
--- a/src/IceTargetLoweringX8632.h
+++ b/src/IceTargetLoweringX8632.h
@@ -16,136 +16,20 @@
 #ifndef SUBZERO_SRC_ICETARGETLOWERINGX8632_H
 #define SUBZERO_SRC_ICETARGETLOWERINGX8632_H
 
-#include <unordered_map>
-
 #include "IceAssemblerX8632.h"
 #include "IceDefs.h"
-#include "IceInst.h"
 #include "IceInstX8632.h"
 #include "IceRegistersX8632.h"
 #include "IceTargetLowering.h"
 
 namespace Ice {
 
-class BoolFoldingEntry {
-  BoolFoldingEntry(const BoolFoldingEntry &) = delete;
-
-public:
-  BoolFoldingEntry() = default;
-  explicit BoolFoldingEntry(Inst *I);
-  BoolFoldingEntry &operator=(const BoolFoldingEntry &) = default;
-  // Instr is the instruction producing the i1-type variable of interest.
-  Inst *Instr = nullptr;
-  // IsComplex is the cached result of BoolFolding::hasComplexLowering(Instr).
-  bool IsComplex = false;
-  // IsLiveOut is initialized conservatively to true, and is set to false when
-  // we encounter an instruction that ends Var's live range.  We disable the
-  // folding optimization when Var is live beyond this basic block.  Note that
-  // if liveness analysis is not performed (e.g. in Om1 mode), IsLiveOut will
-  // always be true and the folding optimization will never be performed.
-  bool IsLiveOut = true;
-  // NumUses counts the number of times Var is used as a source operand in the
-  // basic block.  If IsComplex is true and there is more than one use of Var,
-  // then the folding optimization is disabled for Var.
-  uint32_t NumUses = 0;
-};
-
-class BoolFolding {
-public:
-  enum BoolFoldingProducerKind {
-    PK_None,
-    PK_Icmp32,
-    PK_Icmp64,
-    PK_Fcmp,
-    PK_Trunc
-  };
-
-  // Currently the actual enum values are not used (other than CK_None), but we
-  // go
-  // ahead and produce them anyway for symmetry with the
-  // BoolFoldingProducerKind.
-  enum BoolFoldingConsumerKind { CK_None, CK_Br, CK_Select, CK_Sext, CK_Zext };
-
-private:
-  BoolFolding(const BoolFolding &) = delete;
-  BoolFolding &operator=(const BoolFolding &) = delete;
-
-public:
-  BoolFolding() = default;
-  static BoolFoldingProducerKind getProducerKind(const Inst *Instr);
-  static BoolFoldingConsumerKind getConsumerKind(const Inst *Instr);
-  static bool hasComplexLowering(const Inst *Instr);
-  void init(CfgNode *Node);
-  const Inst *getProducerFor(const Operand *Opnd) const;
-  void dump(const Cfg *Func) const;
-
-private:
-  // Returns true if Producers contains a valid entry for the given VarNum.
-  bool containsValid(SizeT VarNum) const {
-    auto Element = Producers.find(VarNum);
-    return Element != Producers.end() && Element->second.Instr != nullptr;
-  }
-  void setInvalid(SizeT VarNum) { Producers[VarNum].Instr = nullptr; }
-  // Producers maps Variable::Number to a BoolFoldingEntry.
-  std::unordered_map<SizeT, BoolFoldingEntry> Producers;
-};
-
 class TargetX8632 : public TargetLowering {
   TargetX8632() = delete;
   TargetX8632(const TargetX8632 &) = delete;
   TargetX8632 &operator=(const TargetX8632 &) = delete;
 
 public:
-  static TargetX8632 *create(Cfg *Func) { return new TargetX8632(Func); }
-
-  void translateOm1() override;
-  void translateO2() override;
-  void doLoadOpt();
-  bool doBranchOpt(Inst *I, const CfgNode *NextNode) override;
-
-  SizeT getNumRegisters() const override { return RegX8632::Reg_NUM; }
-  Variable *getPhysicalRegister(SizeT RegNum, Type Ty = IceType_void) override;
-  IceString getRegName(SizeT RegNum, Type Ty) const override;
-  llvm::SmallBitVector getRegisterSet(RegSetMask Include,
-                                      RegSetMask Exclude) const override;
-  const llvm::SmallBitVector &getRegisterSetForType(Type Ty) const override {
-    return TypeToRegisterSet[Ty];
-  }
-  bool hasFramePointer() const override { return IsEbpBasedFrame; }
-  SizeT getFrameOrStackReg() const override {
-    return IsEbpBasedFrame ? RegX8632::Reg_ebp : RegX8632::Reg_esp;
-  }
-  size_t typeWidthInBytesOnStack(Type Ty) const override {
-    // Round up to the next multiple of 4 bytes.  In particular, i1,
-    // i8, and i16 are rounded up to 4 bytes.
-    return (typeWidthInBytes(Ty) + 3) & ~3;
-  }
-
-  void emitVariable(const Variable *Var) const override;
-
-  const char *getConstantPrefix() const final { return "$"; }
-  void emit(const ConstantUndef *C) const final;
-  void emit(const ConstantInteger32 *C) const final;
-  void emit(const ConstantInteger64 *C) const final;
-  void emit(const ConstantFloat *C) const final;
-  void emit(const ConstantDouble *C) const final;
-
-  void lowerArguments() override;
-  void initNodeForLowering(CfgNode *Node) override;
-  void addProlog(CfgNode *Node) override;
-  void addEpilog(CfgNode *Node) override;
-  // Ensure that a 64-bit Variable has been split into 2 32-bit
-  // Variables, creating them if necessary.  This is needed for all
-  // I64 operations, and it is needed for pushing F64 arguments for
-  // function calls using the 32-bit push instruction (though the
-  // latter could be done by directly writing to the stack).
-  void split64(Variable *Var);
-  Operand *loOperand(Operand *Operand);
-  Operand *hiOperand(Operand *Operand);
-  void finishArgumentLowering(Variable *Arg, Variable *FramePtr,
-                              size_t BasicFrameOffset, size_t &InArgsSizeBytes);
-  X8632::Address stackVarToAsmOperand(const Variable *Var) const;
-
   enum X86InstructionSet {
     Begin,
     // SSE2 is the PNaCl baseline instruction set.
@@ -154,458 +38,12 @@ public:
     End
   };
 
-  X86InstructionSet getInstructionSet() const { return InstructionSet; }
+  static TargetX8632 *create(Cfg *Func);
+  virtual X8632::Address stackVarToAsmOperand(const Variable *Var) const = 0;
+  virtual X86InstructionSet getInstructionSet() const = 0;
 
 protected:
-  explicit TargetX8632(Cfg *Func);
-
-  void postLower() override;
-
-  void lowerAlloca(const InstAlloca *Inst) override;
-  void lowerArithmetic(const InstArithmetic *Inst) override;
-  void lowerAssign(const InstAssign *Inst) override;
-  void lowerBr(const InstBr *Inst) override;
-  void lowerCall(const InstCall *Inst) override;
-  void lowerCast(const InstCast *Inst) override;
-  void lowerExtractElement(const InstExtractElement *Inst) override;
-  void lowerFcmp(const InstFcmp *Inst) override;
-  void lowerIcmp(const InstIcmp *Inst) override;
-  void lowerIntrinsicCall(const InstIntrinsicCall *Inst) override;
-  void lowerInsertElement(const InstInsertElement *Inst) override;
-  void lowerLoad(const InstLoad *Inst) override;
-  void lowerPhi(const InstPhi *Inst) override;
-  void lowerRet(const InstRet *Inst) override;
-  void lowerSelect(const InstSelect *Inst) override;
-  void lowerStore(const InstStore *Inst) override;
-  void lowerSwitch(const InstSwitch *Inst) override;
-  void lowerUnreachable(const InstUnreachable *Inst) override;
-  void lowerOther(const Inst *Instr) override;
-  void lowerRMW(const InstX8632FakeRMW *RMW);
-  void prelowerPhis() override;
-  void lowerPhiAssignments(CfgNode *Node,
-                           const AssignList &Assignments) override;
-  void doAddressOptLoad() override;
-  void doAddressOptStore() override;
-  void randomlyInsertNop(float Probability) override;
-
-  // Naive lowering of cmpxchg.
-  void lowerAtomicCmpxchg(Variable *DestPrev, Operand *Ptr, Operand *Expected,
-                          Operand *Desired);
-  // Attempt a more optimized lowering of cmpxchg. Returns true if optimized.
-  bool tryOptimizedCmpxchgCmpBr(Variable *DestPrev, Operand *Ptr,
-                                Operand *Expected, Operand *Desired);
-  void lowerAtomicRMW(Variable *Dest, uint32_t Operation, Operand *Ptr,
-                      Operand *Val);
-  void lowerCountZeros(bool Cttz, Type Ty, Variable *Dest, Operand *FirstVal,
-                       Operand *SecondVal);
-
-  typedef void (TargetX8632::*LowerBinOp)(Variable *, Operand *);
-  void expandAtomicRMWAsCmpxchg(LowerBinOp op_lo, LowerBinOp op_hi,
-                                Variable *Dest, Operand *Ptr, Operand *Val);
-
-  void eliminateNextVectorSextInstruction(Variable *SignExtendedResult);
-
-  void scalarizeArithmetic(InstArithmetic::OpKind K, Variable *Dest,
-                           Operand *Src0, Operand *Src1);
-
-  // Operand legalization helpers.  To deal with address mode
-  // constraints, the helpers will create a new Operand and emit
-  // instructions that guarantee that the Operand kind is one of those
-  // indicated by the LegalMask (a bitmask of allowed kinds).  If the
-  // input Operand is known to already meet the constraints, it may be
-  // simply returned as the result, without creating any new
-  // instructions or operands.
-  enum OperandLegalization {
-    Legal_None = 0,
-    Legal_Reg = 1 << 0, // physical register, not stack location
-    Legal_Imm = 1 << 1,
-    Legal_Mem = 1 << 2, // includes [eax+4*ecx] as well as [esp+12]
-    Legal_All = ~Legal_None
-  };
-  typedef uint32_t LegalMask;
-  Operand *legalize(Operand *From, LegalMask Allowed = Legal_All,
-                    int32_t RegNum = Variable::NoRegister);
-  Variable *legalizeToVar(Operand *From, int32_t RegNum = Variable::NoRegister);
-  // Legalize the first source operand for use in the cmp instruction.
-  Operand *legalizeSrc0ForCmp(Operand *Src0, Operand *Src1);
-  // Turn a pointer operand into a memory operand that can be
-  // used by a real load/store operation. Legalizes the operand as well.
-  // This is a nop if the operand is already a legal memory operand.
-  OperandX8632Mem *formMemoryOperand(Operand *Ptr, Type Ty,
-                                     bool DoLegalize = true);
-
-  Variable *makeReg(Type Ty, int32_t RegNum = Variable::NoRegister);
-  static Type stackSlotType();
-
-  Variable *copyToReg(Operand *Src, int32_t RegNum = Variable::NoRegister);
-
-  // Returns a vector in a register with the given constant entries.
-  Variable *makeVectorOfZeros(Type Ty, int32_t RegNum = Variable::NoRegister);
-  Variable *makeVectorOfOnes(Type Ty, int32_t RegNum = Variable::NoRegister);
-  Variable *makeVectorOfMinusOnes(Type Ty,
-                                  int32_t RegNum = Variable::NoRegister);
-  Variable *makeVectorOfHighOrderBits(Type Ty,
-                                      int32_t RegNum = Variable::NoRegister);
-  Variable *makeVectorOfFabsMask(Type Ty,
-                                 int32_t RegNum = Variable::NoRegister);
-
-  // Return a memory operand corresponding to a stack allocated Variable.
-  OperandX8632Mem *getMemoryOperandForStackSlot(Type Ty, Variable *Slot,
-                                                uint32_t Offset = 0);
-
-  void makeRandomRegisterPermutation(
-      llvm::SmallVectorImpl<int32_t> &Permutation,
-      const llvm::SmallBitVector &ExcludeRegisters) const override;
-
-  // The following are helpers that insert lowered x86 instructions
-  // with minimal syntactic overhead, so that the lowering code can
-  // look as close to assembly as practical.
-  void _adc(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Adc::create(Func, Dest, Src0));
-  }
-  void _adc_rmw(OperandX8632Mem *DestSrc0, Operand *Src1) {
-    Context.insert(InstX8632AdcRMW::create(Func, DestSrc0, Src1));
-  }
-  void _add(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Add::create(Func, Dest, Src0));
-  }
-  void _add_rmw(OperandX8632Mem *DestSrc0, Operand *Src1) {
-    Context.insert(InstX8632AddRMW::create(Func, DestSrc0, Src1));
-  }
-  void _adjust_stack(int32_t Amount) {
-    Context.insert(InstX8632AdjustStack::create(
-        Func, Amount, getPhysicalRegister(RegX8632::Reg_esp)));
-  }
-  void _addps(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Addps::create(Func, Dest, Src0));
-  }
-  void _addss(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Addss::create(Func, Dest, Src0));
-  }
-  void _and(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632And::create(Func, Dest, Src0));
-  }
-  void _and_rmw(OperandX8632Mem *DestSrc0, Operand *Src1) {
-    Context.insert(InstX8632AndRMW::create(Func, DestSrc0, Src1));
-  }
-  void _blendvps(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Blendvps::create(Func, Dest, Src0, Src1));
-  }
-  void _br(CondX86::BrCond Condition, CfgNode *TargetTrue,
-           CfgNode *TargetFalse) {
-    Context.insert(
-        InstX8632Br::create(Func, TargetTrue, TargetFalse, Condition));
-  }
-  void _br(CfgNode *Target) {
-    Context.insert(InstX8632Br::create(Func, Target));
-  }
-  void _br(CondX86::BrCond Condition, CfgNode *Target) {
-    Context.insert(InstX8632Br::create(Func, Target, Condition));
-  }
-  void _br(CondX86::BrCond Condition, InstX8632Label *Label) {
-    Context.insert(InstX8632Br::create(Func, Label, Condition));
-  }
-  void _bsf(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Bsf::create(Func, Dest, Src0));
-  }
-  void _bsr(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Bsr::create(Func, Dest, Src0));
-  }
-  void _bswap(Variable *SrcDest) {
-    Context.insert(InstX8632Bswap::create(Func, SrcDest));
-  }
-  void _cbwdq(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Cbwdq::create(Func, Dest, Src0));
-  }
-  void _cmov(Variable *Dest, Operand *Src0, CondX86::BrCond Condition) {
-    Context.insert(InstX8632Cmov::create(Func, Dest, Src0, Condition));
-  }
-  void _cmp(Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Icmp::create(Func, Src0, Src1));
-  }
-  void _cmpps(Variable *Dest, Operand *Src0, CondX86::CmppsCond Condition) {
-    Context.insert(InstX8632Cmpps::create(Func, Dest, Src0, Condition));
-  }
-  void _cmpxchg(Operand *DestOrAddr, Variable *Eax, Variable *Desired,
-                bool Locked) {
-    Context.insert(
-        InstX8632Cmpxchg::create(Func, DestOrAddr, Eax, Desired, Locked));
-    // Mark eax as possibly modified by cmpxchg.
-    Context.insert(
-        InstFakeDef::create(Func, Eax, llvm::dyn_cast<Variable>(DestOrAddr)));
-    _set_dest_nonkillable();
-    Context.insert(InstFakeUse::create(Func, Eax));
-  }
-  void _cmpxchg8b(OperandX8632Mem *Addr, Variable *Edx, Variable *Eax,
-                  Variable *Ecx, Variable *Ebx, bool Locked) {
-    Context.insert(
-        InstX8632Cmpxchg8b::create(Func, Addr, Edx, Eax, Ecx, Ebx, Locked));
-    // Mark edx, and eax as possibly modified by cmpxchg8b.
-    Context.insert(InstFakeDef::create(Func, Edx));
-    _set_dest_nonkillable();
-    Context.insert(InstFakeUse::create(Func, Edx));
-    Context.insert(InstFakeDef::create(Func, Eax));
-    _set_dest_nonkillable();
-    Context.insert(InstFakeUse::create(Func, Eax));
-  }
-  void _cvt(Variable *Dest, Operand *Src0, InstX8632Cvt::CvtVariant Variant) {
-    Context.insert(InstX8632Cvt::create(Func, Dest, Src0, Variant));
-  }
-  void _div(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Div::create(Func, Dest, Src0, Src1));
-  }
-  void _divps(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Divps::create(Func, Dest, Src0));
-  }
-  void _divss(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Divss::create(Func, Dest, Src0));
-  }
-  void _fld(Operand *Src0) { Context.insert(InstX8632Fld::create(Func, Src0)); }
-  void _fstp(Variable *Dest) {
-    Context.insert(InstX8632Fstp::create(Func, Dest));
-  }
-  void _idiv(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Idiv::create(Func, Dest, Src0, Src1));
-  }
-  void _imul(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Imul::create(Func, Dest, Src0));
-  }
-  void _insertps(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Insertps::create(Func, Dest, Src0, Src1));
-  }
-  void _jmp(Operand *Target) {
-    Context.insert(InstX8632Jmp::create(Func, Target));
-  }
-  void _lea(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Lea::create(Func, Dest, Src0));
-  }
-  void _mfence() { Context.insert(InstX8632Mfence::create(Func)); }
-  // If Dest=nullptr is passed in, then a new variable is created,
-  // marked as infinite register allocation weight, and returned
-  // through the in/out Dest argument.
-  void _mov(Variable *&Dest, Operand *Src0,
-            int32_t RegNum = Variable::NoRegister) {
-    if (Dest == nullptr)
-      Dest = makeReg(Src0->getType(), RegNum);
-    Context.insert(InstX8632Mov::create(Func, Dest, Src0));
-  }
-  void _mov_nonkillable(Variable *Dest, Operand *Src0) {
-    Inst *NewInst = InstX8632Mov::create(Func, Dest, Src0);
-    NewInst->setDestNonKillable();
-    Context.insert(NewInst);
-  }
-  void _movd(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Movd::create(Func, Dest, Src0));
-  }
-  void _movp(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Movp::create(Func, Dest, Src0));
-  }
-  void _movq(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Movq::create(Func, Dest, Src0));
-  }
-  void _movss(Variable *Dest, Variable *Src0) {
-    Context.insert(InstX8632MovssRegs::create(Func, Dest, Src0));
-  }
-  void _movsx(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Movsx::create(Func, Dest, Src0));
-  }
-  void _movzx(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Movzx::create(Func, Dest, Src0));
-  }
-  void _mul(Variable *Dest, Variable *Src0, Operand *Src1) {
-    Context.insert(InstX8632Mul::create(Func, Dest, Src0, Src1));
-  }
-  void _mulps(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Mulps::create(Func, Dest, Src0));
-  }
-  void _mulss(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Mulss::create(Func, Dest, Src0));
-  }
-  void _neg(Variable *SrcDest) {
-    Context.insert(InstX8632Neg::create(Func, SrcDest));
-  }
-  void _nop(SizeT Variant) {
-    Context.insert(InstX8632Nop::create(Func, Variant));
-  }
-  void _or(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Or::create(Func, Dest, Src0));
-  }
-  void _or_rmw(OperandX8632Mem *DestSrc0, Operand *Src1) {
-    Context.insert(InstX8632OrRMW::create(Func, DestSrc0, Src1));
-  }
-  void _padd(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Padd::create(Func, Dest, Src0));
-  }
-  void _pand(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Pand::create(Func, Dest, Src0));
-  }
-  void _pandn(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Pandn::create(Func, Dest, Src0));
-  }
-  void _pblendvb(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Pblendvb::create(Func, Dest, Src0, Src1));
-  }
-  void _pcmpeq(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Pcmpeq::create(Func, Dest, Src0));
-  }
-  void _pcmpgt(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Pcmpgt::create(Func, Dest, Src0));
-  }
-  void _pextr(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Pextr::create(Func, Dest, Src0, Src1));
-  }
-  void _pinsr(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Pinsr::create(Func, Dest, Src0, Src1));
-  }
-  void _pmull(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Pmull::create(Func, Dest, Src0));
-  }
-  void _pmuludq(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Pmuludq::create(Func, Dest, Src0));
-  }
-  void _pop(Variable *Dest) {
-    Context.insert(InstX8632Pop::create(Func, Dest));
-  }
-  void _por(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Por::create(Func, Dest, Src0));
-  }
-  void _pshufd(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Pshufd::create(Func, Dest, Src0, Src1));
-  }
-  void _psll(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Psll::create(Func, Dest, Src0));
-  }
-  void _psra(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Psra::create(Func, Dest, Src0));
-  }
-  void _psrl(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Psrl::create(Func, Dest, Src0));
-  }
-  void _psub(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Psub::create(Func, Dest, Src0));
-  }
-  void _push(Variable *Src0) {
-    Context.insert(InstX8632Push::create(Func, Src0));
-  }
-  void _pxor(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Pxor::create(Func, Dest, Src0));
-  }
-  void _ret(Variable *Src0 = nullptr) {
-    Context.insert(InstX8632Ret::create(Func, Src0));
-  }
-  void _rol(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Rol::create(Func, Dest, Src0));
-  }
-  void _sar(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Sar::create(Func, Dest, Src0));
-  }
-  void _sbb(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Sbb::create(Func, Dest, Src0));
-  }
-  void _sbb_rmw(OperandX8632Mem *DestSrc0, Operand *Src1) {
-    Context.insert(InstX8632SbbRMW::create(Func, DestSrc0, Src1));
-  }
-  void _setcc(Variable *Dest, CondX86::BrCond Condition) {
-    Context.insert(InstX8632Setcc::create(Func, Dest, Condition));
-  }
-  void _shl(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Shl::create(Func, Dest, Src0));
-  }
-  void _shld(Variable *Dest, Variable *Src0, Variable *Src1) {
-    Context.insert(InstX8632Shld::create(Func, Dest, Src0, Src1));
-  }
-  void _shr(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Shr::create(Func, Dest, Src0));
-  }
-  void _shrd(Variable *Dest, Variable *Src0, Variable *Src1) {
-    Context.insert(InstX8632Shrd::create(Func, Dest, Src0, Src1));
-  }
-  void _shufps(Variable *Dest, Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Shufps::create(Func, Dest, Src0, Src1));
-  }
-  void _sqrtss(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Sqrtss::create(Func, Dest, Src0));
-  }
-  void _store(Operand *Value, OperandX8632 *Mem) {
-    Context.insert(InstX8632Store::create(Func, Value, Mem));
-  }
-  void _storep(Variable *Value, OperandX8632Mem *Mem) {
-    Context.insert(InstX8632StoreP::create(Func, Value, Mem));
-  }
-  void _storeq(Variable *Value, OperandX8632Mem *Mem) {
-    Context.insert(InstX8632StoreQ::create(Func, Value, Mem));
-  }
-  void _sub(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Sub::create(Func, Dest, Src0));
-  }
-  void _sub_rmw(OperandX8632Mem *DestSrc0, Operand *Src1) {
-    Context.insert(InstX8632SubRMW::create(Func, DestSrc0, Src1));
-  }
-  void _subps(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Subps::create(Func, Dest, Src0));
-  }
-  void _subss(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Subss::create(Func, Dest, Src0));
-  }
-  void _test(Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Test::create(Func, Src0, Src1));
-  }
-  void _ucomiss(Operand *Src0, Operand *Src1) {
-    Context.insert(InstX8632Ucomiss::create(Func, Src0, Src1));
-  }
-  void _ud2() { Context.insert(InstX8632UD2::create(Func)); }
-  void _xadd(Operand *Dest, Variable *Src, bool Locked) {
-    Context.insert(InstX8632Xadd::create(Func, Dest, Src, Locked));
-    // The xadd exchanges Dest and Src (modifying Src).
-    // Model that update with a FakeDef followed by a FakeUse.
-    Context.insert(
-        InstFakeDef::create(Func, Src, llvm::dyn_cast<Variable>(Dest)));
-    _set_dest_nonkillable();
-    Context.insert(InstFakeUse::create(Func, Src));
-  }
-  void _xchg(Operand *Dest, Variable *Src) {
-    Context.insert(InstX8632Xchg::create(Func, Dest, Src));
-    // The xchg modifies Dest and Src -- model that update with a
-    // FakeDef/FakeUse.
-    Context.insert(
-        InstFakeDef::create(Func, Src, llvm::dyn_cast<Variable>(Dest)));
-    _set_dest_nonkillable();
-    Context.insert(InstFakeUse::create(Func, Src));
-  }
-  void _xor(Variable *Dest, Operand *Src0) {
-    Context.insert(InstX8632Xor::create(Func, Dest, Src0));
-  }
-  void _xor_rmw(OperandX8632Mem *DestSrc0, Operand *Src1) {
-    Context.insert(InstX8632XorRMW::create(Func, DestSrc0, Src1));
-  }
-  void _set_dest_nonkillable() {
-    Context.getLastInserted()->setDestNonKillable();
-  }
-
-  bool optimizeScalarMul(Variable *Dest, Operand *Src0, int32_t Src1);
-  void findRMW();
-
-  X86InstructionSet InstructionSet = X86InstructionSet::Begin;
-  bool IsEbpBasedFrame = false;
-  bool NeedsStackAlignment = false;
-  size_t SpillAreaSizeBytes = 0;
-  llvm::SmallBitVector TypeToRegisterSet[IceType_NUM];
-  llvm::SmallBitVector ScratchRegs;
-  llvm::SmallBitVector RegsUsed;
-  VarList PhysicalRegisters[IceType_NUM];
-  static IceString RegNames[];
-
-  // Randomize a given immediate operand
-  Operand *randomizeOrPoolImmediate(Constant *Immediate,
-                                    int32_t RegNum = Variable::NoRegister);
-  OperandX8632Mem *
-  randomizeOrPoolImmediate(OperandX8632Mem *MemOperand,
-                           int32_t RegNum = Variable::NoRegister);
-  bool RandomizationPoolingPaused = false;
-
-private:
-  ~TargetX8632() override {}
-  BoolFolding FoldingInfo;
+  explicit TargetX8632(Cfg *Func) : TargetLowering(Func) {}
 };
 
 class TargetDataX8632 final : public TargetDataLowering {
@@ -626,7 +64,7 @@ protected:
   explicit TargetDataX8632(GlobalContext *Ctx);
 
 private:
-  ~TargetDataX8632() override {}
+  ~TargetDataX8632() override = default;
   template <typename T> static void emitConstantPool(GlobalContext *Ctx);
 };