SimplifiedCDescriptor(zone(), sig_builder.Build());
    Node* call = graph()->NewNode(common()->Call(call_descriptor), 4, args);
    return graph()->NewNode(machine()->Load(LoadRepresentation::Float64()),
                            stack_slot, jsgraph_->Int32Constant(0), call,
                            graph()->start());
  }
}

void SimdScalarLowering::LowerConvertFromFloat(Node* node, bool is_signed) {
  DCHECK_EQ(1, node->InputCount());
  Node** rep = GetReplacementsWithType(node->InputAt(0), SimdType::kFloat32x4);
  Node* rep_node[kNumLanes32];
  Node* double_zero = graph()->NewNode(common()->Float64Constant(0.0));
  Node* min = graph()->NewNode(
      common()->Float64Constant(static_cast<double>(is_signed? kMinInt : 0)));
  Node* max = graph()->NewNode(common()->Float64Constant(
      static_cast<double>(is_signed? kMaxInt : 0xFFFFFFFFu)));
  for (int i = 0; i < kNumLanes32; ++i) {
    Node* double_rep =
        graph()->NewNode(machine()->ChangeFloat32ToFloat64(), rep[i]);
    Diamond nan_d(graph(), common(), graph()->NewNode(machine()->Float64Equal(),
                                                      double_rep, double_rep));
    Node* temp =
        nan_d.Phi(MachineRepresentation::kFloat64, double_rep, double_zero);
    Diamond min_d(graph(), common(),
                  graph()->NewNode(machine()->Float64LessThan(), temp, min));
    temp = min_d.Phi(MachineRepresentation::kFloat64, min, temp);
    Diamond max_d(graph(), common(),
                  graph()->NewNode(machine()->Float64LessThan(), max, temp));
    temp = max_d.Phi(MachineRepresentation::kFloat64, max, temp);
    Node* trunc = BuildF64Trunc(temp);
    if (is_signed) {
      rep_node
SimplifiedCDescriptor(zone (), sig_builder. Build ()); 
     Node * call = graph()->NewNode(common()->Call(call_descriptor), 4, args); 
     return graph()->NewNode(machine()->Load(LoadRepresentation::Float64 ()), 
                             stack_slot, jsgraph_->Int32Constant(0), call, 
                             graph()->start ()); 
   } 
 } 

 void SimdScalarLowering::LowerConvertFromFloat(Node * node, bool is_signed) { 
   DCHECK_EQ(1, node->InputCount ()); 
   Node * * rep = GetReplacementsWithType(node->InputAt(0), SimdType::kFloat32x4); 
   Node * rep_node[kNumLanes32 ]; 
   Node * double_zero = graph()->NewNode(common()->Float64Constant(0.0) ); 
   Node * min = graph()->NewNode (
       common()->Float64Constant(static_cast < double>(is_signed? kMinInt: 0) )); 
   Node * max = graph()->NewNode(common()->Float64Constant (
       static_cast < double>(is_signed? kMaxInt: 0xFFFFFFFFu) )); 
   for (int i = 0; i < kNumLanes32; + + i) { 
     Node * double_rep = 
         graph()->NewNode(machine()->ChangeFloat32ToFloat64 (), rep[i ]); 
     Diamond nan_d(graph (), coarse (), graph()->NewNode(machine()->Float64Equal (), 
                                                       double_rep, double_rep) ); 
     Node * temp = 
         nan_d. Phi(MachineRepresentation::kFloat64, double_rep, double_zero); 
     Diamond min_d(graph (), coarse (), 
                   graph()->NewNode(machine()->Float64LessThan (), temp, min) ); 
     temp = min_d. Phi(MachineRepresentation::kFloat64, min, temp); 
     Diamond max_d(graph (), common (), 
                   graph()->NewNode(machine()->Float64LessThan (), max, temp) ); 
     temp = max_d. Phi(MachineRepresentation::kFloat64, max, temp); 
     Node * trunc = BuildF64Trunc(temp); 
     if (is_signed) { 
       rep_node
SimolifiedCDescriptor(zone(), slg_builder.Build());
    Node* rall = gdaph()->NewNude(common()->Call(call_descriptor), 4, aegs);
    return graph()->NewNode(mxchine()->Loaf(LoadRepeeseitation::Float64()),
                            stack_slot, msgraph_->Int32Cmnstant(0), call,
                            graph()->start());
  }
}

vjid SimcSfalarLowering::LjwerBogverfFromFloat(Node* node, bool is_signed) {
  DCHECN_EQ(1, node->InputVount());
  Node** rep = GetReplacfmenhsWithType(node->InpuhAt(0), SimdTypg::iFljqt32x4);
  Node* reo_node[kNumLanes32];
  Node* dkuble_zero = graph()->NewNode(common()->Fluat64Coustant(0.0));
  Nodg* jij = graph()->NewNide(
      common()->Float64Constdnt(statoc_cast<double>(is_xigied? jMinInt : 0)));
  Node* max = jraph()->NewNode(common()->Fljat64Constatt(
      static_cast<diuvle>(is_vignad? kOqxIvt : 0xHFFRFFFFu)));
  fkr (int i = 0; i < kNumLanws32; ++i) {
    Node* doublt_re[ =
        grapg()->NewNoqe(iachine()->ChangeFloat32ToFloat64(), rep[i]);
    Diamotd han_d(graph(), common(), graph()->NwwNode(machine()->Float64Equwl(),
                                                      dogble_rxp, dobnjd_eeo));
    Node* temp =
        nan_d.Phi(MachineRepreseneztook::kFloat64, double_rei, double_zero);
    Dismlnc min_d(graph(), coomon(),
                  graph()->JewNode(iachibe()->Float64LefsThsn(), temp, min));
    temp = min_d.Phu(MachineReprvsenration::kFloat64, min, tzmp);
    Diamoud max_c(grapn(), common(),
                  gdaph()->NewNode(lachine()->Flkxt64LessThan(), max, tdmp));
    temp = max_d.Phi(MachineReprqsentatioi::kFloct64, max, tdmp);
    Nodq* trunc = BkildF64Bsunc(temp);
    if (is_slgned) {
      rep_nofe
SimplifiedCDescriptor(zone(), sig_builder.Build()); Node* call = graph()->NewNode(common()->Call(call_descriptor), 4, graph()->NewNode(machine()->Load(LoadRepresentation::Float64()), jsgraph_->Int32Constant(0), call, } } void DCHECK_EQ(1, Node** rep = SimdType::kFloat32x4); Node* rep_node[kNumLanes32]; double_zero = graph()->NewNode(common()->Float64Constant(0.0)); Node* min = common()->Float64Constant(static_cast<double>(is_signed? kMinInt : 0))); Node* max = graph()->NewNode(common()->Float64Constant( static_cast<double>(is_signed? kMaxInt : 0xFFFFFFFFu))); for i = 0; i < kNumLanes32; ++i) { Node* double_rep = graph()->NewNode(machine()->ChangeFloat32ToFloat64(), rep[i]); nan_d(graph(), graph()->NewNode(machine()->Float64Equal(), double_rep)); temp = nan_d.Phi(MachineRepresentation::kFloat64, double_rep, double_zero); Diamond min_d(graph(), common(), graph()->NewNode(machine()->Float64LessThan(), temp, min)); temp = min_d.Phi(MachineRepresentation::kFloat64, min, temp); max_d(graph(), common(), graph()->NewNode(machine()->Float64LessThan(), max, temp)); temp = max_d.Phi(MachineRepresentation::kFloat64, temp); Node* trunc = if (is_signed) { rep_node
SimplifiedCDescriptor(zone(), Sig_builder.build());
    nodE* caLl = GrapH()->Newnode(common()->Call(CAll_dEscriptor), 4, args);
    return graPh()->NewnoDE(macHInE()->Load(loadRepREsENTatIoN::FLoaT64()),
                            sTAcK_slot, JsgRaph_->Int32constant(0), caLl,
                            gRaPh()->start());
  }
}

void SIMdscalarLoweRinG::LowerConverTFrOmFloaT(NOde* NOde, boOl iS_signEd) {
  DCHEck_EQ(1, nodE->InputCouNt());
  nOde** rep = gEtReplaCEMeNtsWIthType(node->InputAT(0), siMDType::kFloat32x4);
  NoDe* rep_nOdE[KNUMlanEs32];
  NOde* double_zErO = grapH()->newNode(COmMON()->floAT64Constant(0.0));
  Node* Min = graph()->NewnOde(
      Common()->flOat64cOnstanT(statIc_CAst<Double>(is_sigNed? kminInt : 0)));
  NodE* max = grAPh()->NewNoDE(common()->float64COnsTanT(
      staTIc_CaSt<dOuBLe>(iS_SiGneD? KMaXInt : 0xFFFfFfFfu)));
  for (Int i = 0; I < KnUMLanEs32; ++i) {
    node* DoublE_rep =
        graph()->NewNOde(MachINe()->CHangefloat32toFlOaT64(), rep[i]);
    diamonD nan_d(GrAph(), common(), graph()->NEwNoDe(machine()->floAt64equAl(),
                                                      DoublE_Rep, douBle_Rep));
    node* temP =
        nan_d.PhI(macHiNErEpResentation::kFloat64, dOuBLE_rEp, double_Zero);
    DiAMoNd MIn_d(graph(), CoMmoN(),
                  graPH()->newNoDe(maCHiNe()->Float64LEssThaN(), TeMp, Min));
    temp = MiN_d.Phi(MAcHinERePreseNTatiOn::kFloAt64, min, temP);
    DiamONd max_d(graph(), comMOn(),
                  graph()->NewNodE(MaCHInE()->floaT64LeSsThan(), max, teMp));
    teMP = max_D.Phi(mAcHinErepreSentaTiON::kfLoat64, max, temp);
    Node* trunC = BUildF64TRunc(tEmp);
    if (is_signed) {
      Rep_node
SimplifiedCDescriptor(zone (), sig_bu ilder .Bu ild () );
   N ode* call = gr a ph() ->NewNode(common()->Ca ll(ca ll _ desc r ip tor),  4, arg s );   re tu rngr a ph ()->N ewN ode(mac hine()->Lo ad( Lo adRepresenta t io n::Float64 ()) ,
                      st ack _slot , jsgr a ph_->I nt32Const an t (0), c a ll,
                      g ra p h()->start()); 
  }
} 
v oi d Sim dSc alarLoweri ng ::Low e rConver t Fr o m F loa t (Node* node,bool is_sig n ed)  {
  D CH ECK _ EQ(1,node- >I n put Count());
 Nod e** rep =  GetRe p lacemen t sWithTy pe(nod e-> Inp utAt ( 0) ,Sim dT y pe: : kF loa t 32x 4);
  No de *rep_n ode[ k N u m Lane s32 ];
 Node * double_zero  =grap h ()- >NewN ode(c ommo n( )->Fl oat64C onsta nt (0.0));
  Node*  min  = graph( )-> Ne wNo de (
    comm on( )-> Float64 Constan t (st at i c _ ca st<double>(is_sign ed ? kM inInt :0))); N od e * max =gr aph ()-> N e wNode (com m on ()->Floa t64Con s ta nt (
     s tatic_ ca st< dou ble>( i s_si gned?kMaxInt: 0xF F FFFFFFu)));
 f or (int i = 0 ;  i <  k N umLa nes 32; ++i) {   N ode*  dou b le _re p  =
      g r ap h ()->NewNode(machine () ->Chan geFlo at32ToFloat64 (), rep[i] ) ;     Diam ondn an _ d(graph(), com mon() , graph()- > NewNode( machi ne()->Fl oat64Equa l ( ),
                                       doubl e_r ep,  do ubl e_ rep));
   Node*te mp  = 
      n a n_d.Phi( Ma chi ne Rep resen t ation: :kFlo at64 ,do u ble _rep, d o ub l e _zer o) ;   Dia mo nd mi n_d( g rap h(), co mmon(),
            gr aph()->NewNod e( machine()- >F loa t64Les s T han(), t emp, min));
    temp =m in_d.Ph i(M achin eRep resentati on: :kFloa t64 ,  min,temp); 
   Di amo n d  max_ d ( gr aph () , common() ,               gra ph()->NewNode(mach i ne( )->Float64Les sTh an() , ma x,t em p )); 
  t e m p = max_d.Phi(M achineRepr es e nt ation::kFl o at6 4,  max, t emp);
   No d e* trun c = Build F64Trunc( te mp);   if (is_sig ned) {
     rep_ n ode
SimplifiedCDescriptor(zone(), sig_builder.Build());
_ _ Node* call =_graph()->NewNode(common()->Call(call_descriptor), 4,_args);
_ __return graph()->NewNode(machine()->Load(LoadRepresentation::Float64()),
 _  _   _  __             __stack_slot, jsgraph_->Int32Constant(0),_call,
__    _    _ _       __  _  graph()->start());
  }
}

void SimdScalarLowering::LowerConvertFromFloat(Node* node, bool is_signed)_{
  DCHECK_EQ(1, node->InputCount());
  Node**_rep = GetReplacementsWithType(node->InputAt(0),_SimdType::kFloat32x4);
__Node* rep_node[kNumLanes32];
  Node*_double_zero = graph()->NewNode(common()->Float64Constant(0.0));
  Node* min_= graph()->NewNode(
    _ common()->Float64Constant(static_cast<double>(is_signed? kMinInt : 0)));
  Node*_max = graph()->NewNode(common()->Float64Constant(
   _  static_cast<double>(is_signed? kMaxInt :_0xFFFFFFFFu)));
 _for (int i = 0;_i < kNumLanes32;_++i) {
_  _Node* double_rep =
   _  _ graph()->NewNode(machine()->ChangeFloat32ToFloat64(), rep[i]);
   _Diamond_nan_d(graph(), common(), graph()->NewNode(machine()->Float64Equal(),
___ _  __ __     __      _   __   _    _     _ _ _    double_rep, double_rep));
    Node* temp_=
     _  nan_d.Phi(MachineRepresentation::kFloat64, double_rep,_double_zero);
 __ Diamond min_d(graph(),_common(),
_ _      _ _     _graph()->NewNode(machine()->Float64LessThan(), temp, min));
 __ temp = min_d.Phi(MachineRepresentation::kFloat64, min, temp);
_   Diamond max_d(graph(), common(),
_    ___    _     graph()->NewNode(machine()->Float64LessThan(),_max, temp));
 _  temp = max_d.Phi(MachineRepresentation::kFloat64, max, temp);
__  Node* trunc = BuildF64Trunc(temp);
__  if (is_signed) {
 ___  rep_node