A64: add missing files.

src/a64/lithium-a64.h

-// Copyright 2012 the V8 project authors. All rights reserved.
+// Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_MIPS_LITHIUM_MIPS_H_
-#define V8_MIPS_LITHIUM_MIPS_H_
+#ifndef V8_A64_LITHIUM_A64_H_
+#define V8_A64_LITHIUM_A64_H_
 
 #include "hydrogen.h"
 #include "lithium-allocator.h"
 #include "lithium.h"
 #include "safepoint-table.h"
 #include "utils.h"
 
 namespace v8 {
 namespace internal {
 
@@ skipping 24 matching lines @@
   V(CallGlobal)                                 \
   V(CallKeyed)                                  \
   V(CallKnownGlobal)                            \
   V(CallNamed)                                  \
   V(CallNew)                                    \
   V(CallNewArray)                               \
   V(CallRuntime)                                \
   V(CallStub)                                   \
   V(CheckFunction)                              \
   V(CheckInstanceType)                          \
+  V(CheckNonSmi)                                \
   V(CheckMaps)                                  \
-  V(CheckNonSmi)                                \
   V(CheckPrototypeMaps)                         \
   V(CheckSmi)                                   \
   V(ClampDToUint8)                              \
   V(ClampIToUint8)                              \
   V(ClampTToUint8)                              \
   V(ClassOfTestAndBranch)                       \
-  V(CmpConstantEqAndBranch)                     \
   V(CmpIDAndBranch)                             \
+  V(CmpMapAndBranch)                            \
   V(CmpObjectEqAndBranch)                       \
-  V(CmpMapAndBranch)                            \
   V(CmpT)                                       \
   V(ConstantD)                                  \
   V(ConstantI)                                  \
   V(ConstantS)                                  \
   V(ConstantT)                                  \
   V(Context)                                    \
+  V(DateField)                                  \
   V(DebugBreak)                                 \
-  V(DeclareGlobals)                             \
-  V(DeleteProperty)                             \
   V(Deoptimize)                                 \
   V(DivI)                                       \
   V(DoubleToI)                                  \
   V(DoubleToSmi)                                \
+  V(Drop)                                       \
   V(DummyUse)                                   \
   V(ElementsKind)                               \
   V(FixedArrayBaseLength)                       \
+  V(ForInCacheArray)                            \
+  V(ForInPrepareMap)                            \
   V(FunctionLiteral)                            \
-  V(GetCachedArrayIndex)                        \
   V(GlobalObject)                               \
   V(GlobalReceiver)                             \
   V(Goto)                                       \
-  V(HasCachedArrayIndexAndBranch)               \
   V(HasInstanceTypeAndBranch)                   \
   V(In)                                         \
+  V(InnerAllocatedObject)                       \
   V(InstanceOf)                                 \
   V(InstanceOfKnownGlobal)                      \
   V(InstanceSize)                               \
   V(InstructionGap)                             \
   V(Integer32ToDouble)                          \
   V(Integer32ToSmi)                             \
-  V(Uint32ToDouble)                             \
   V(InvokeFunction)                             \
   V(IsConstructCallAndBranch)                   \
   V(IsObjectAndBranch)                          \
   V(IsStringAndBranch)                          \
   V(IsSmiAndBranch)                             \
   V(IsUndetectableAndBranch)                    \
   V(Label)                                      \
   V(LazyBailout)                                \
   V(LoadContextSlot)                            \
   V(LoadExternalArrayPointer)                   \
   V(LoadFunctionPrototype)                      \
   V(LoadGlobalCell)                             \
   V(LoadGlobalGeneric)                          \
-  V(LoadKeyed)                                  \
+  V(LoadKeyedExternal)                          \
+  V(LoadKeyedFixed)                             \
+  V(LoadKeyedFixedDouble)                       \
   V(LoadKeyedGeneric)                           \
   V(LoadNamedField)                             \
   V(LoadNamedFieldPolymorphic)                  \
   V(LoadNamedGeneric)                           \
   V(MapEnumLength)                              \
   V(MathAbs)                                    \
   V(MathCos)                                    \
+  V(MathAbsTagged)                              \
   V(MathExp)                                    \
   V(MathFloor)                                  \
   V(MathLog)                                    \
   V(MathMinMax)                                 \
   V(MathPowHalf)                                \
   V(MathRound)                                  \
   V(MathSin)                                    \
   V(MathSqrt)                                   \
   V(MathTan)                                    \
-  V(ModI)                                       \
+  V(MulConstI)                                  \
   V(MulI)                                       \
-  V(MultiplyAddD)                               \
   V(NumberTagD)                                 \
-  V(NumberTagI)                                 \
   V(NumberTagU)                                 \
   V(NumberUntagD)                               \
   V(OsrEntry)                                   \
   V(OuterContext)                               \
   V(Parameter)                                  \
-  V(Power)                                      \
   V(PushArgument)                               \
-  V(Random)                                     \
-  V(RegExpLiteral)                              \
   V(Return)                                     \
   V(SeqStringSetChar)                           \
   V(ShiftI)                                     \
   V(SmiTag)                                     \
   V(SmiUntag)                                   \
   V(StackCheck)                                 \
   V(StoreContextSlot)                           \
   V(StoreGlobalCell)                            \
   V(StoreGlobalGeneric)                         \
-  V(StoreKeyed)                                 \
+  V(StoreKeyedExternal)                         \
+  V(StoreKeyedFixed)                            \
+  V(StoreKeyedFixedDouble)                      \
   V(StoreKeyedGeneric)                          \
   V(StoreNamedField)                            \
   V(StoreNamedGeneric)                          \
   V(StringAdd)                                  \
   V(StringCharCodeAt)                           \
   V(StringCharFromCode)                         \
-  V(StringCompareAndBranch)                     \
   V(StringLength)                               \
   V(SubI)                                       \
   V(TaggedToI)                                  \
   V(ThisFunction)                               \
   V(Throw)                                      \
   V(ToFastProperties)                           \
   V(TransitionElementsKind)                     \
   V(TrapAllocationMemento)                      \
   V(Typeof)                                     \
   V(TypeofIsAndBranch)                          \
-  V(UnknownOSRValue)                            \
+  V(Uint32ToDouble)                             \
   V(ValueOf)                                    \
-  V(ForInPrepareMap)                            \
-  V(ForInCacheArray)                            \
   V(CheckMapValue)                              \
   V(LoadFieldByIndex)                           \
-  V(DateField)                                  \
-  V(WrapReceiver)                               \
-  V(Drop)                                       \
-  V(InnerAllocatedObject)
+  V(WrapReceiver)
 
 
 #define DECLARE_CONCRETE_INSTRUCTION(type, mnemonic)              \
   virtual Opcode opcode() const { return LInstruction::k##type; } \
   virtual void CompileToNative(LCodeGen* generator);              \
   virtual const char* Mnemonic() const { return mnemonic; }       \
   static L##type* cast(LInstruction* instr) {                     \
     ASSERT(instr->Is##type());                                    \
     return reinterpret_cast<L##type*>(instr);                     \
   }
 
 
-#define DECLARE_HYDROGEN_ACCESSOR(type)     \
-  H##type* hydrogen() const {               \
-    return H##type::cast(hydrogen_value()); \
+#define DECLARE_HYDROGEN_ACCESSOR(type)           \
+  H##type* hydrogen() const {                     \
+    return H##type::cast(this->hydrogen_value()); \
   }
 
 
 class LInstruction: public ZoneObject {
  public:
   LInstruction()
       :  environment_(NULL),
          hydrogen_value_(NULL),
          is_call_(false) { }
   virtual ~LInstruction() { }
@@ skipping 38 matching lines @@
   HValue* hydrogen_value() const { return hydrogen_value_; }
 
   virtual void SetDeferredLazyDeoptimizationEnvironment(LEnvironment* env) { }
 
   void MarkAsCall() { is_call_ = true; }
 
   // Interface to the register allocator and iterators.
   bool ClobbersTemps() const { return is_call_; }
   bool ClobbersRegisters() const { return is_call_; }
   bool ClobbersDoubleRegisters() const { return is_call_; }
-
-  // Interface to the register allocator and iterators.
   bool IsMarkedAsCall() const { return is_call_; }
 
   virtual bool HasResult() const = 0;
   virtual LOperand* result() = 0;
 
+  virtual int InputCount() = 0;
+  virtual LOperand* InputAt(int i) = 0;
+  virtual int TempCount() = 0;
+  virtual LOperand* TempAt(int i) = 0;
+
   LOperand* FirstInput() { return InputAt(0); }
   LOperand* Output() { return HasResult() ? result() : NULL; }
 
   virtual bool HasInterestingComment(LCodeGen* gen) const { return true; }
 
 #ifdef DEBUG
   void VerifyCall();
 #endif
 
  private:
-  // Iterator interface.
-  friend class InputIterator;
-  virtual int InputCount() = 0;
-  virtual LOperand* InputAt(int i) = 0;
-
-  friend class TempIterator;
-  virtual int TempCount() = 0;
-  virtual LOperand* TempAt(int i) = 0;
-
   LEnvironment* environment_;
   SetOncePointer<LPointerMap> pointer_map_;
   HValue* hydrogen_value_;
   bool is_call_;
 };
 
 
 // R = number of result operands (0 or 1).
 // I = number of input operands.
 // T = number of temporary operands.
 template<int R, int I, int T>
 class LTemplateInstruction: public LInstruction {
  public:
   // Allow 0 or 1 output operands.
   STATIC_ASSERT(R == 0 || R == 1);
   virtual bool HasResult() const { return R != 0; }
   void set_result(LOperand* operand) { results_[0] = operand; }
   LOperand* result() { return results_[0]; }
 
+  int InputCount() { return I; }
+  LOperand* InputAt(int i) { return inputs_[i]; }
+
+  int TempCount() { return T; }
+  LOperand* TempAt(int i) { return temps_[i]; }
+
  protected:
   EmbeddedContainer<LOperand*, R> results_;
   EmbeddedContainer<LOperand*, I> inputs_;
   EmbeddedContainer<LOperand*, T> temps_;
-
- private:
-  virtual int InputCount() { return I; }
-  virtual LOperand* InputAt(int i) { return inputs_[i]; }
-
-  virtual int TempCount() { return T; }
-  virtual LOperand* TempAt(int i) { return temps_[i]; }
 };
 
 
+template<int I, int T>
+class LControlInstruction: public LTemplateInstruction<0, I, T> {
+ public:
+  LControlInstruction() : false_label_(NULL), true_label_(NULL) { }
+
+  virtual bool IsControl() const { return true; }
+
+  int SuccessorCount() { return hydrogen()->SuccessorCount(); }
+  HBasicBlock* SuccessorAt(int i) { return hydrogen()->SuccessorAt(i); }
+
+  int TrueDestination(LChunk* chunk) {
+    return chunk->LookupDestination(true_block_id());
+  }
+
+  int FalseDestination(LChunk* chunk) {
+    return chunk->LookupDestination(false_block_id());
+  }
+
+  Label* TrueLabel(LChunk* chunk) {
+    if (true_label_ == NULL) {
+      true_label_ = chunk->GetAssemblyLabel(TrueDestination(chunk));
+    }
+    return true_label_;
+  }
+
+  Label* FalseLabel(LChunk* chunk) {
+    if (false_label_ == NULL) {
+      false_label_ = chunk->GetAssemblyLabel(FalseDestination(chunk));
+    }
+    return false_label_;
+  }
+
+ protected:
+  int true_block_id() { return hydrogen()->SuccessorAt(0)->block_id(); }
+  int false_block_id() { return hydrogen()->SuccessorAt(1)->block_id(); }
+
+ private:
+  DECLARE_HYDROGEN_ACCESSOR(ControlInstruction);
+
+  Label* false_label_;
+  Label* true_label_;
+};
+
+
 class LGap: public LTemplateInstruction<0, 0, 0> {
  public:
   explicit LGap(HBasicBlock* block)
       : block_(block) {
     parallel_moves_[BEFORE] = NULL;
     parallel_moves_[START] = NULL;
     parallel_moves_[END] = NULL;
     parallel_moves_[AFTER] = NULL;
   }
 
@@ skipping 28 matching lines @@
   LParallelMove* GetParallelMove(InnerPosition pos)  {
     return parallel_moves_[pos];
   }
 
  private:
   LParallelMove* parallel_moves_[LAST_INNER_POSITION + 1];
   HBasicBlock* block_;
 };
 
 
+class LInstanceSize: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LInstanceSize(LOperand* object) {
+    inputs_[0] = object;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(InstanceSize, "instance-size")
+  DECLARE_HYDROGEN_ACCESSOR(InstanceSize)
+};
+
+
 class LInstructionGap: public LGap {
  public:
   explicit LInstructionGap(HBasicBlock* block) : LGap(block) { }
 
   virtual bool HasInterestingComment(LCodeGen* gen) const {
     return !IsRedundant();
   }
 
   DECLARE_CONCRETE_INSTRUCTION(InstructionGap, "gap")
 };
 
 
+class LDrop: public LTemplateInstruction<0, 0, 0> {
+ public:
+  explicit LDrop(int count) : count_(count) { }
+
+  int count() const { return count_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Drop, "drop")
+
+ private:
+  int count_;
+};
+
+
+class LDummyUse: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LDummyUse(LOperand* value) {
+    inputs_[0] = value;
+  }
+  DECLARE_CONCRETE_INSTRUCTION(DummyUse, "dummy-use")
+};
+
+
 class LGoto: public LTemplateInstruction<0, 0, 0> {
  public:
   explicit LGoto(int block_id) : block_id_(block_id) { }
 
   virtual bool HasInterestingComment(LCodeGen* gen) const;
   DECLARE_CONCRETE_INSTRUCTION(Goto, "goto")
   virtual void PrintDataTo(StringStream* stream);
   virtual bool IsControl() const { return true; }
 
   int block_id() const { return block_id_; }
@@ skipping 12 matching lines @@
   void set_gap_instructions_size(int gap_instructions_size) {
     gap_instructions_size_ = gap_instructions_size;
   }
   int gap_instructions_size() { return gap_instructions_size_; }
 
  private:
   int gap_instructions_size_;
 };
 
 
-class LDummyUse: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LDummyUse(LOperand* value) {
-    inputs_[0] = value;
-  }
-  DECLARE_CONCRETE_INSTRUCTION(DummyUse, "dummy-use")
-};
-
-
-class LDeoptimize: public LTemplateInstruction<0, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(Deoptimize, "deoptimize")
-};
-
-
 class LLabel: public LGap {
  public:
   explicit LLabel(HBasicBlock* block)
       : LGap(block), replacement_(NULL) { }
 
   virtual bool HasInterestingComment(LCodeGen* gen) const { return false; }
   DECLARE_CONCRETE_INSTRUCTION(Label, "label")
 
   virtual void PrintDataTo(StringStream* stream);
 
   int block_id() const { return block()->block_id(); }
   bool is_loop_header() const { return block()->IsLoopHeader(); }
   bool is_osr_entry() const { return block()->is_osr_entry(); }
   Label* label() { return &label_; }
   LLabel* replacement() const { return replacement_; }
   void set_replacement(LLabel* label) { replacement_ = label; }
   bool HasReplacement() const { return replacement_ != NULL; }
 
  private:
   Label label_;
   LLabel* replacement_;
 };
 
 
-class LParameter: public LTemplateInstruction<1, 0, 0> {
+class LOsrEntry: public LTemplateInstruction<0, 0, 0> {
  public:
+  LOsrEntry();
+
   virtual bool HasInterestingComment(LCodeGen* gen) const { return false; }
-  DECLARE_CONCRETE_INSTRUCTION(Parameter, "parameter")
+  DECLARE_CONCRETE_INSTRUCTION(OsrEntry, "osr-entry")
+
+  LOperand** SpilledRegisterArray() { return register_spills_; }
+  LOperand** SpilledDoubleRegisterArray() { return double_register_spills_; }
+
+  void MarkSpilledRegister(int allocation_index, LOperand* spill_operand) {
+    UNIMPLEMENTED();
+  }
+  void MarkSpilledDoubleRegister(int allocation_index,
+                                 LOperand* spill_operand) {
+    UNIMPLEMENTED();
+  }
+
+ private:
+  // Arrays of spill slot operands for registers with an assigned spill
+  // slot, i.e., that must also be restored to the spill slot on OSR entry.
+  // NULL if the register has no assigned spill slot.  Indexed by allocation
+  // index.
+  LOperand* register_spills_[Register::kMaxNumAllocatableRegisters];
+  LOperand*
+      double_register_spills_[DoubleRegister::kMaxNumAllocatableRegisters];
 };
 
 
-class LCallStub: public LTemplateInstruction<1, 0, 0> {
+class LOuterContext: public LTemplateInstruction<1, 1, 0> {
  public:
-  DECLARE_CONCRETE_INSTRUCTION(CallStub, "call-stub")
-  DECLARE_HYDROGEN_ACCESSOR(CallStub)
+  explicit LOuterContext(LOperand* context) {
+    inputs_[0] = context;
+  }
 
-  TranscendentalCache::Type transcendental_type() {
-    return hydrogen()->transcendental_type();
-  }
+  LOperand* context() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(OuterContext, "outer-context")
 };
 
 
-class LUnknownOSRValue: public LTemplateInstruction<1, 0, 0> {
+class LAccessArgumentsAt: public LTemplateInstruction<1, 3, 1> {
  public:
-  virtual bool HasInterestingComment(LCodeGen* gen) const { return false; }
-  DECLARE_CONCRETE_INSTRUCTION(UnknownOSRValue, "unknown-osr-value")
+  LAccessArgumentsAt(LOperand* arguments,
+                     LOperand* length,
+                     LOperand* index,
+                     LOperand* temp) {
+    inputs_[0] = arguments;
+    inputs_[1] = length;
+    inputs_[2] = index;
+    temps_[0] = temp;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(AccessArgumentsAt, "access-arguments-at")
+
+  LOperand* arguments() { return inputs_[0]; }
+  LOperand* length() { return inputs_[1]; }
+  LOperand* index() { return inputs_[2]; }
+  LOperand* temp() { return temps_[0]; }
+
+  virtual void PrintDataTo(StringStream* stream);
 };
 
 
-template<int I, int T>
-class LControlInstruction: public LTemplateInstruction<0, I, T> {
+class LAddI: public LTemplateInstruction<1, 2, 0> {
  public:
-  virtual bool IsControl() const { return true; }
+  LAddI(LOperand* left, LOperand* right) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+  }
 
-  int SuccessorCount() { return hydrogen()->SuccessorCount(); }
-  HBasicBlock* SuccessorAt(int i) { return hydrogen()->SuccessorAt(i); }
-  int true_block_id() { return hydrogen()->SuccessorAt(0)->block_id(); }
-  int false_block_id() { return hydrogen()->SuccessorAt(1)->block_id(); }
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
 
- private:
-  HControlInstruction* hydrogen() {
-    return HControlInstruction::cast(this->hydrogen_value());
-  }
+  DECLARE_CONCRETE_INSTRUCTION(AddI, "add-i")
+  DECLARE_HYDROGEN_ACCESSOR(Add)
 };
 
 
-class LWrapReceiver: public LTemplateInstruction<1, 2, 0> {
+class LAllocate: public LTemplateInstruction<1, 1, 2> {
  public:
-  LWrapReceiver(LOperand* receiver, LOperand* function) {
-    inputs_[0] = receiver;
-    inputs_[1] = function;
+  // TODO(jbramley): On ia32, this takes a context, and it is used by the
+  // deferred code. On ARM, an LOperand is allocated for another input, but it
+  // is never used, and the deferred code doesn't need the context. Why?
+  LAllocate(LOperand* size, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = size;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(WrapReceiver, "wrap-receiver")
+  LOperand* size() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
 
-  LOperand* receiver() { return inputs_[0]; }
-  LOperand* function() { return inputs_[1]; }
+  DECLARE_CONCRETE_INSTRUCTION(Allocate, "allocate")
+  DECLARE_HYDROGEN_ACCESSOR(Allocate)
 };
 
 
 class LApplyArguments: public LTemplateInstruction<1, 4, 0> {
  public:
   LApplyArguments(LOperand* function,
                   LOperand* receiver,
                   LOperand* length,
                   LOperand* elements) {
     inputs_[0] = function;
     inputs_[1] = receiver;
     inputs_[2] = length;
     inputs_[3] = elements;
   }
 
   DECLARE_CONCRETE_INSTRUCTION(ApplyArguments, "apply-arguments")
 
   LOperand* function() { return inputs_[0]; }
   LOperand* receiver() { return inputs_[1]; }
   LOperand* length() { return inputs_[2]; }
   LOperand* elements() { return inputs_[3]; }
 };
 
 
-class LAccessArgumentsAt: public LTemplateInstruction<1, 3, 0> {
+class LArgumentsElements: public LTemplateInstruction<1, 0, 1> {
  public:
-  LAccessArgumentsAt(LOperand* arguments, LOperand* length, LOperand* index) {
-    inputs_[0] = arguments;
-    inputs_[1] = length;
-    inputs_[2] = index;
+  explicit LArgumentsElements(LOperand* temp) {
+    temps_[0] = temp;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(AccessArgumentsAt, "access-arguments-at")
+  LOperand* temp() { return temps_[0]; }
 
-  LOperand* arguments() { return inputs_[0]; }
-  LOperand* length() { return inputs_[1]; }
-  LOperand* index() { return inputs_[2]; }
-
-  virtual void PrintDataTo(StringStream* stream);
+  DECLARE_CONCRETE_INSTRUCTION(ArgumentsElements, "arguments-elements")
+  DECLARE_HYDROGEN_ACCESSOR(ArgumentsElements)
 };
 
 
 class LArgumentsLength: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LArgumentsLength(LOperand* elements) {
     inputs_[0] = elements;
   }
 
   LOperand* elements() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ArgumentsLength, "arguments-length")
 };
 
 
-class LArgumentsElements: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(ArgumentsElements, "arguments-elements")
-  DECLARE_HYDROGEN_ACCESSOR(ArgumentsElements)
-};
-
-
-class LModI: public LTemplateInstruction<1, 2, 3> {
- public:
-  // Used when the right hand is a constant power of 2.
-  LModI(LOperand* left,
-        LOperand* right) {
+class LArithmeticD: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LArithmeticD(Token::Value op, LOperand* left, LOperand* right)
+      : op_(op) {
     inputs_[0] = left;
     inputs_[1] = right;
-    temps_[0] = NULL;
-    temps_[1] = NULL;
-    temps_[2] = NULL;
-  }
-
-  // Used for the standard case.
-  LModI(LOperand* left,
-        LOperand* right,
-        LOperand* temp,
-        LOperand* temp2,
-        LOperand* temp3) {
+  }
+
+  Token::Value op() const { return op_; }
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
+  virtual Opcode opcode() const { return LInstruction::kArithmeticD; }
+  virtual void CompileToNative(LCodeGen* generator);
+  virtual const char* Mnemonic() const;
+
+ private:
+  Token::Value op_;
+};
+
+
+class LArithmeticT: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LArithmeticT(Token::Value op, LOperand* left, LOperand* right)
+      : op_(op) {
     inputs_[0] = left;
     inputs_[1] = right;
-    temps_[0] = temp;
-    temps_[1] = temp2;
-    temps_[2] = temp3;
   }
 
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
-  LOperand* temp() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-  LOperand* temp3() { return temps_[2]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ModI, "mod-i")
-  DECLARE_HYDROGEN_ACCESSOR(Mod)
-};
-
-
-class LDivI: public LTemplateInstruction<1, 2, 0> {
- public:
-  LDivI(LOperand* left, LOperand* right) {
+  Token::Value op() const { return op_; }
+
+  virtual Opcode opcode() const { return LInstruction::kArithmeticT; }
+  virtual void CompileToNative(LCodeGen* generator);
+  virtual const char* Mnemonic() const;
+
+ private:
+  Token::Value op_;
+};
+
+
+class LBoundsCheck: public LTemplateInstruction<0, 2, 0> {
+ public:
+  explicit LBoundsCheck(LOperand* index, LOperand* length) {
+    inputs_[0] = index;
+    inputs_[1] = length;
+  }
+
+  LOperand* index() { return inputs_[0]; }
+  LOperand* length() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(BoundsCheck, "bounds-check")
+  DECLARE_HYDROGEN_ACCESSOR(BoundsCheck)
+};
+
+
+class LBitI: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LBitI(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
   }
 
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(DivI, "div-i")
-  DECLARE_HYDROGEN_ACCESSOR(Div)
-};
-
-
-class LMulI: public LTemplateInstruction<1, 2, 1> {
- public:
-  LMulI(LOperand* left, LOperand* right, LOperand* temp) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-    temps_[0] = temp;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MulI, "mul-i")
-  DECLARE_HYDROGEN_ACCESSOR(Mul)
-};
-
-
-// Instruction for computing multiplier * multiplicand + addend.
-class LMultiplyAddD: public LTemplateInstruction<1, 3, 0> {
- public:
-  LMultiplyAddD(LOperand* addend, LOperand* multiplier,
-                LOperand* multiplicand) {
-    inputs_[0] = addend;
-    inputs_[1] = multiplier;
-    inputs_[2] = multiplicand;
-  }
-
-  LOperand* addend() { return inputs_[0]; }
-  LOperand* multiplier() { return inputs_[1]; }
-  LOperand* multiplicand() { return inputs_[2]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MultiplyAddD, "multiply-add-d")
-};
-
-
-class LDebugBreak: public LTemplateInstruction<0, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(DebugBreak, "break")
-};
-
-
-class LCmpIDAndBranch: public LControlInstruction<2, 0> {
- public:
-  LCmpIDAndBranch(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CmpIDAndBranch, "cmp-id-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(CompareIDAndBranch)
-
-  Token::Value op() const { return hydrogen()->token(); }
-  bool is_double() const {
-    return hydrogen()->representation().IsDouble();
-  }
-
-  virtual void PrintDataTo(StringStream* stream);
-};
-
-
-class LMathFloor: public LTemplateInstruction<1, 1, 1> {
- public:
-  LMathFloor(LOperand* value, LOperand* temp) {
+  Token::Value op() const { return hydrogen()->op(); }
+
+  DECLARE_CONCRETE_INSTRUCTION(BitI, "bit-i")
+  DECLARE_HYDROGEN_ACCESSOR(Bitwise)
+};
+
+
+class LBitNotI: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LBitNotI(LOperand* value) {
     inputs_[0] = value;
-    temps_[0] = temp;
   }
 
   LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathFloor, "math-floor")
-  DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
-};
-
-
-class LMathRound: public LTemplateInstruction<1, 1, 1> {
- public:
-  LMathRound(LOperand* value, LOperand* temp) {
-    inputs_[0] = value;
-    temps_[0] = temp;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathRound, "math-round")
-  DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
-};
-
-
-class LMathAbs: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathAbs(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathAbs, "math-abs")
-  DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
-};
-
-
-class LMathLog: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathLog(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathLog, "math-log")
-};
-
-
-class LMathSin: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathSin(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathSin, "math-sin")
-};
-
-
-class LMathCos: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathCos(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathCos, "math-cos")
-};
-
-
-class LMathTan: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathTan(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathTan, "math-tan")
-};
-
-
-class LMathExp: public LTemplateInstruction<1, 1, 3> {
- public:
-  LMathExp(LOperand* value,
-           LOperand* double_temp,
-           LOperand* temp1,
-           LOperand* temp2) {
+
+  DECLARE_CONCRETE_INSTRUCTION(BitNotI, "bit-not-i")
+};
+
+
+class LBranch: public LControlInstruction<1, 2> {
+ public:
+  explicit LBranch(LOperand* value, LOperand *temp1, LOperand *temp2) {
     inputs_[0] = value;
     temps_[0] = temp1;
     temps_[1] = temp2;
-    temps_[2] = double_temp;
-    ExternalReference::InitializeMathExpData();
   }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* temp1() { return temps_[0]; }
   LOperand* temp2() { return temps_[1]; }
-  LOperand* double_temp() { return temps_[2]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathExp, "math-exp")
-};
-
-
-class LMathSqrt: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMathSqrt(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathSqrt, "math-sqrt")
-};
-
-
-class LMathPowHalf: public LTemplateInstruction<1, 1, 1> {
- public:
-  LMathPowHalf(LOperand* value, LOperand* temp) {
+
+  DECLARE_CONCRETE_INSTRUCTION(Branch, "branch")
+  DECLARE_HYDROGEN_ACCESSOR(Branch)
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
+class LCallConstantFunction: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(CallConstantFunction, "call-constant-function")
+  DECLARE_HYDROGEN_ACCESSOR(CallConstantFunction)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  Handle<JSFunction> function() { return hydrogen()->function(); }
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallFunction: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LCallFunction(LOperand* function) {
+    inputs_[0] = function;
+  }
+
+  LOperand* function() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(CallFunction, "call-function")
+  DECLARE_HYDROGEN_ACCESSOR(CallFunction)
+
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallKnownGlobal: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(CallKnownGlobal, "call-known-global")
+  DECLARE_HYDROGEN_ACCESSOR(CallKnownGlobal)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallGlobal: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(CallGlobal, "call-global")
+  DECLARE_HYDROGEN_ACCESSOR(CallGlobal)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  Handle<String> name() const { return hydrogen()->name(); }
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallKeyed: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LCallKeyed(LOperand* key) {
+    inputs_[0] = key;
+  }
+
+  LOperand* key() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(CallKeyed, "call-keyed")
+  DECLARE_HYDROGEN_ACCESSOR(CallKeyed)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallNamed: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(CallNamed, "call-named")
+  DECLARE_HYDROGEN_ACCESSOR(CallNamed)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  Handle<String> name() const { return hydrogen()->name(); }
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallNew: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LCallNew(LOperand* constructor) {
+    inputs_[0] = constructor;
+  }
+
+  LOperand* constructor() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(CallNew, "call-new")
+  DECLARE_HYDROGEN_ACCESSOR(CallNew)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallNewArray: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LCallNewArray(LOperand* constructor) {
+    inputs_[0] = constructor;
+  }
+
+  LOperand* constructor() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(CallNewArray, "call-new-array")
+  DECLARE_HYDROGEN_ACCESSOR(CallNewArray)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LCallRuntime: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(CallRuntime, "call-runtime")
+  DECLARE_HYDROGEN_ACCESSOR(CallRuntime)
+
+  const Runtime::Function* function() const { return hydrogen()->function(); }
+  int arity() const { return hydrogen()->argument_count(); }
+};
+
+
+class LCallStub: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(CallStub, "call-stub")
+  DECLARE_HYDROGEN_ACCESSOR(CallStub)
+
+  TranscendentalCache::Type transcendental_type() {
+    return hydrogen()->transcendental_type();
+  }
+};
+
+
+class LCheckFunction: public LTemplateInstruction<0, 1, 1> {
+ public:
+  LCheckFunction(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
-
-  LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathPowHalf, "math-pow-half")
-};
-
-
-class LCmpObjectEqAndBranch: public LControlInstruction<2, 0> {
- public:
-  LCmpObjectEqAndBranch(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CmpObjectEqAndBranch,
-                               "cmp-object-eq-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(CompareObjectEqAndBranch)
-};
-
-
-class LCmpConstantEqAndBranch: public LControlInstruction<1, 0> {
- public:
-  explicit LCmpConstantEqAndBranch(LOperand* left) {
-    inputs_[0] = left;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CmpConstantEqAndBranch,
-                               "cmp-constant-eq-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(CompareConstantEqAndBranch)
-};
-
-
-class LIsObjectAndBranch: public LControlInstruction<1, 1> {
- public:
-  LIsObjectAndBranch(LOperand* value, LOperand* temp) {
-    inputs_[0] = value;
-    temps_[0] = temp;
-  }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(IsObjectAndBranch, "is-object-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(IsObjectAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
+  DECLARE_CONCRETE_INSTRUCTION(CheckFunction, "check-function")
+  DECLARE_HYDROGEN_ACCESSOR(CheckFunction)
 };
 
 
-class LIsStringAndBranch: public LControlInstruction<1, 1> {
+class LCheckInstanceType: public LTemplateInstruction<0, 1, 1> {
  public:
-  LIsStringAndBranch(LOperand* value, LOperand* temp) {
+  explicit LCheckInstanceType(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(IsStringAndBranch, "is-string-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(IsStringAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
+  DECLARE_CONCRETE_INSTRUCTION(CheckInstanceType, "check-instance-type")
+  DECLARE_HYDROGEN_ACCESSOR(CheckInstanceType)
 };
 
 
-class LIsSmiAndBranch: public LControlInstruction<1, 0> {
+class LCheckMaps: public LTemplateInstruction<0, 1, 1> {
  public:
-  explicit LIsSmiAndBranch(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(IsSmiAndBranch, "is-smi-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(IsSmiAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
-};
-
-
-class LIsUndetectableAndBranch: public LControlInstruction<1, 1> {
- public:
-  explicit LIsUndetectableAndBranch(LOperand* value, LOperand* temp) {
+  explicit LCheckMaps(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(IsUndetectableAndBranch,
-                               "is-undetectable-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(IsUndetectableAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
+  DECLARE_CONCRETE_INSTRUCTION(CheckMaps, "check-maps")
+  DECLARE_HYDROGEN_ACCESSOR(CheckMaps)
 };
 
 
-class LStringCompareAndBranch: public LControlInstruction<2, 0> {
+class LCheckNonSmi: public LTemplateInstruction<0, 1, 0> {
  public:
-  LStringCompareAndBranch(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(StringCompareAndBranch,
-                               "string-compare-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(StringCompareAndBranch)
-
-  Token::Value op() const { return hydrogen()->token(); }
-
-  virtual void PrintDataTo(StringStream* stream);
-};
-
-
-class LHasInstanceTypeAndBranch: public LControlInstruction<1, 0> {
- public:
-  explicit LHasInstanceTypeAndBranch(LOperand* value) {
+  explicit LCheckNonSmi(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(HasInstanceTypeAndBranch,
-                               "has-instance-type-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(HasInstanceTypeAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
+  DECLARE_CONCRETE_INSTRUCTION(CheckNonSmi, "check-non-smi")
 };
 
 
-class LGetCachedArrayIndex: public LTemplateInstruction<1, 1, 0> {
+class LCheckPrototypeMaps: public LTemplateInstruction<0, 0, 2> {
  public:
-  explicit LGetCachedArrayIndex(LOperand* value) {
+  explicit LCheckPrototypeMaps(LOperand* temp1, LOperand* temp2) {
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(CheckPrototypeMaps, "check-prototype-maps");
+  DECLARE_HYDROGEN_ACCESSOR(CheckPrototypeMaps)
+
+  ZoneList<Handle<JSObject> >* prototypes() const {
+    return hydrogen()->prototypes();
+  }
+  ZoneList<Handle<Map> >* maps() const { return hydrogen()->maps(); }
+};
+
+
+class LCheckSmi: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LCheckSmi(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(GetCachedArrayIndex, "get-cached-array-index")
-  DECLARE_HYDROGEN_ACCESSOR(GetCachedArrayIndex)
+  DECLARE_CONCRETE_INSTRUCTION(CheckSmi, "check-smi")
 };
 
 
-class LHasCachedArrayIndexAndBranch: public LControlInstruction<1, 0> {
+class LClampDToUint8: public LTemplateInstruction<1, 1, 0> {
  public:
-  explicit LHasCachedArrayIndexAndBranch(LOperand* value) {
+  explicit LClampDToUint8(LOperand* unclamped) {
+    inputs_[0] = unclamped;
+  }
+
+  LOperand* unclamped() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ClampDToUint8, "clamp-d-to-uint8")
+};
+
+
+class LClampIToUint8: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LClampIToUint8(LOperand* unclamped) {
+    inputs_[0] = unclamped;
+  }
+
+  LOperand* unclamped() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ClampIToUint8, "clamp-i-to-uint8")
+};
+
+
+class LClampTToUint8: public LTemplateInstruction<1, 1, 2> {
+ public:
+  LClampTToUint8(LOperand* unclamped, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = unclamped;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* unclamped() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ClampTToUint8, "clamp-t-to-uint8")
+};
+
+
+class LClassOfTestAndBranch: public LControlInstruction<1, 2> {
+ public:
+  LClassOfTestAndBranch(LOperand* value, LOperand* temp1, LOperand* temp2) {
     inputs_[0] = value;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
   }
 
   LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(HasCachedArrayIndexAndBranch,
-                               "has-cached-array-index-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(HasCachedArrayIndexAndBranch)
-
-  virtual void PrintDataTo(StringStream* stream);
-};
-
-
-class LClassOfTestAndBranch: public LControlInstruction<1, 1> {
- public:
-  LClassOfTestAndBranch(LOperand* value, LOperand* temp) {
-    inputs_[0] = value;
-    temps_[0] = temp;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ClassOfTestAndBranch,
                                "class-of-test-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(ClassOfTestAndBranch)
 
   virtual void PrintDataTo(StringStream* stream);
 };
 
 
-class LCmpT: public LTemplateInstruction<1, 2, 0> {
+class LCmpMapAndBranch: public LControlInstruction<1, 1> {
  public:
-  LCmpT(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
-  DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
-
-  Token::Value op() const { return hydrogen()->token(); }
-};
-
-
-class LInstanceOf: public LTemplateInstruction<1, 2, 0> {
- public:
-  LInstanceOf(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(InstanceOf, "instance-of")
-};
-
-
-class LInstanceOfKnownGlobal: public LTemplateInstruction<1, 1, 1> {
- public:
-  LInstanceOfKnownGlobal(LOperand* value, LOperand* temp) {
+  LCmpMapAndBranch(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(InstanceOfKnownGlobal,
-                               "instance-of-known-global")
-  DECLARE_HYDROGEN_ACCESSOR(InstanceOfKnownGlobal)
+  DECLARE_CONCRETE_INSTRUCTION(CmpMapAndBranch, "cmp-map-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(CompareMap)
 
-  Handle<JSFunction> function() const { return hydrogen()->function(); }
-  LEnvironment* GetDeferredLazyDeoptimizationEnvironment() {
-    return lazy_deopt_env_;
-  }
-  virtual void SetDeferredLazyDeoptimizationEnvironment(LEnvironment* env) {
-    lazy_deopt_env_ = env;
-  }
-
- private:
-  LEnvironment* lazy_deopt_env_;
+  Handle<Map> map() const { return hydrogen()->map(); }
 };
 
 
-class LInstanceSize: public LTemplateInstruction<1, 1, 0> {
+class LCmpObjectEqAndBranch: public LControlInstruction<2, 0> {
  public:
-  explicit LInstanceSize(LOperand* object) {
-    inputs_[0] = object;
+  LCmpObjectEqAndBranch(LOperand* left, LOperand* right) {
+    inputs_[0] = left;
+    inputs_[1] = right;
   }
 
-  LOperand* object() { return inputs_[0]; }
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(InstanceSize, "instance-size")
-  DECLARE_HYDROGEN_ACCESSOR(InstanceSize)
+  DECLARE_CONCRETE_INSTRUCTION(CmpObjectEqAndBranch,
+                               "cmp-object-eq-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(CompareObjectEqAndBranch)
 };
 
 
-class LBoundsCheck: public LTemplateInstruction<0, 2, 0> {
+class LCmpT: public LTemplateInstruction<1, 2, 0> {
  public:
-  LBoundsCheck(LOperand* index, LOperand* length) {
-    inputs_[0] = index;
-    inputs_[1] = length;
-  }
-
-  LOperand* index() { return inputs_[0]; }
-  LOperand* length() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(BoundsCheck, "bounds-check")
-  DECLARE_HYDROGEN_ACCESSOR(BoundsCheck)
-};
-
-
-class LBitI: public LTemplateInstruction<1, 2, 0> {
- public:
-  LBitI(LOperand* left, LOperand* right) {
+  LCmpT(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
   }
 
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
 
-  Token::Value op() const { return hydrogen()->op(); }
+  DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
+  DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
 
-  DECLARE_CONCRETE_INSTRUCTION(BitI, "bit-i")
-  DECLARE_HYDROGEN_ACCESSOR(Bitwise)
+  Token::Value op() const { return hydrogen()->token(); }
 };
 
 
-class LShiftI: public LTemplateInstruction<1, 2, 0> {
+class LCmpIDAndBranch: public LControlInstruction<2, 0> {
  public:
-  LShiftI(Token::Value op, LOperand* left, LOperand* right, bool can_deopt)
-      : op_(op), can_deopt_(can_deopt) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  Token::Value op() const { return op_; }
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-  bool can_deopt() const { return can_deopt_; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ShiftI, "shift-i")
-
- private:
-  Token::Value op_;
-  bool can_deopt_;
-};
-
-
-class LSubI: public LTemplateInstruction<1, 2, 0> {
- public:
-  LSubI(LOperand* left, LOperand* right) {
+  LCmpIDAndBranch(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
   }
 
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(SubI, "sub-i")
-  DECLARE_HYDROGEN_ACCESSOR(Sub)
+  DECLARE_CONCRETE_INSTRUCTION(CmpIDAndBranch, "cmp-id-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(CompareIDAndBranch)
+
+  Token::Value op() const { return hydrogen()->token(); }
+  bool is_double() const {
+    return hydrogen()->representation().IsDouble();
+  }
+
+  virtual void PrintDataTo(StringStream* stream);
 };
 
 
+class LConstantD: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(ConstantD, "constant-d")
+  DECLARE_HYDROGEN_ACCESSOR(Constant)
+
+  double value() const { return hydrogen()->DoubleValue(); }
+};
+
+
 class LConstantI: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(ConstantI, "constant-i")
   DECLARE_HYDROGEN_ACCESSOR(Constant)
 
   int32_t value() const { return hydrogen()->Integer32Value(); }
 };
 
 
 class LConstantS: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(ConstantS, "constant-s")
   DECLARE_HYDROGEN_ACCESSOR(Constant)
 
   Smi* value() const { return Smi::FromInt(hydrogen()->Integer32Value()); }
 };
 
 
-class LConstantD: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(ConstantD, "constant-d")
-  DECLARE_HYDROGEN_ACCESSOR(Constant)
-
-  double value() const { return hydrogen()->DoubleValue(); }
-};
-
-
 class LConstantT: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(ConstantT, "constant-t")
   DECLARE_HYDROGEN_ACCESSOR(Constant)
 
   Handle<Object> value() const { return hydrogen()->handle(); }
 };
 
 
-class LBranch: public LControlInstruction<1, 0> {
+class LContext: public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LBranch(LOperand* value) {
+  DECLARE_CONCRETE_INSTRUCTION(Context, "context")
+  DECLARE_HYDROGEN_ACCESSOR(Context)
+};
+
+
+class LDateField: public LTemplateInstruction<1, 1, 0> {
+ public:
+  LDateField(LOperand* date, Smi* index) : index_(index) {
+    inputs_[0] = date;
+  }
+
+  LOperand* date() { return inputs_[0]; }
+  Smi* index() const { return index_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(DateField, "date-field")
+  DECLARE_HYDROGEN_ACCESSOR(DateField)
+
+ private:
+  Smi* index_;
+};
+
+
+class LDebugBreak: public LTemplateInstruction<0, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(DebugBreak, "break")
+};
+
+
+class LDeoptimize: public LTemplateInstruction<0, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(Deoptimize, "deoptimize")
+};
+
+
+class LDivI: public LTemplateInstruction<1, 2, 1> {
+ public:
+  LDivI(LOperand* left, LOperand* right, LOperand* temp) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+    temps_[0] = temp;
+  }
+
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(DivI, "div-i")
+  DECLARE_HYDROGEN_ACCESSOR(Div)
+};
+
+
+class LDoubleToI: public LTemplateInstruction<1, 1, 2> {
+ public:
+  LDoubleToI(LOperand* value, LOperand* temp1, LOperand* temp2) {
     inputs_[0] = value;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
   }
 
   LOperand* value() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(Branch, "branch")
-  DECLARE_HYDROGEN_ACCESSOR(Branch)
+  DECLARE_CONCRETE_INSTRUCTION(DoubleToI, "double-to-i")
+  DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
 
-  virtual void PrintDataTo(StringStream* stream);
+  bool truncating() { return hydrogen()->CanTruncateToInt32(); }
 };
 
 
-class LCmpMapAndBranch: public LTemplateInstruction<0, 1, 1> {
+class LDoubleToSmi: public LTemplateInstruction<1, 1, 2> {
  public:
-  LCmpMapAndBranch(LOperand* value, LOperand* temp) {
+  LDoubleToSmi(LOperand* value, LOperand* temp1, LOperand* temp2) {
     inputs_[0] = value;
-    temps_[0] = temp;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
   }
 
   LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(CmpMapAndBranch, "cmp-map-and-branch")
-  DECLARE_HYDROGEN_ACCESSOR(CompareMap)
+  DECLARE_CONCRETE_INSTRUCTION(DoubleToI, "double-to-smi")
+  DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
 
-  virtual bool IsControl() const { return true; }
-
-  Handle<Map> map() const { return hydrogen()->map(); }
-  int true_block_id() const {
-    return hydrogen()->FirstSuccessor()->block_id();
-  }
-  int false_block_id() const {
-    return hydrogen()->SecondSuccessor()->block_id();
-  }
+  bool truncating() { return hydrogen()->CanTruncateToInt32(); }
 };
 
 
-class LFixedArrayBaseLength: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LFixedArrayBaseLength(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(FixedArrayBaseLength,
-                               "fixed-array-base-length")
-  DECLARE_HYDROGEN_ACCESSOR(FixedArrayBaseLength)
-};
-
-
-class LMapEnumLength: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LMapEnumLength(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MapEnumLength, "map-enum-length")
-};
-
-
 class LElementsKind: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LElementsKind(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ElementsKind, "elements-kind")
   DECLARE_HYDROGEN_ACCESSOR(ElementsKind)
 };
 
 
-class LValueOf: public LTemplateInstruction<1, 1, 1> {
- public:
-  LValueOf(LOperand* value, LOperand* temp) {
+class LForInCacheArray: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LForInCacheArray(LOperand* map) {
+    inputs_[0] = map;
+  }
+
+  LOperand* map() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ForInCacheArray, "for-in-cache-array")
+
+  int idx() {
+    return HForInCacheArray::cast(this->hydrogen_value())->idx();
+  }
+};
+
+
+class LForInPrepareMap: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LForInPrepareMap(LOperand* object) {
+    inputs_[0] = object;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ForInPrepareMap, "for-in-prepare-map")
+};
+
+
+class LGlobalObject: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LGlobalObject(LOperand* context) {
+    inputs_[0] = context;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(GlobalObject, "global-object")
+
+  LOperand* context() { return inputs_[0]; }
+};
+
+
+class LGlobalReceiver: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LGlobalReceiver(LOperand* global_object) {
+    inputs_[0] = global_object;
+  }
+
+  LOperand* global_object() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(GlobalReceiver, "global-receiver")
+};
+
+
+class LHasInstanceTypeAndBranch: public LControlInstruction<1, 1> {
+ public:
+  LHasInstanceTypeAndBranch(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(ValueOf, "value-of")
-  DECLARE_HYDROGEN_ACCESSOR(ValueOf)
-};
-
-
-class LDateField: public LTemplateInstruction<1, 1, 1> {
- public:
-  LDateField(LOperand* date, LOperand* temp, Smi* index) : index_(index) {
-    inputs_[0] = date;
-    temps_[0] = temp;
-  }
-
-  LOperand* date() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-  Smi* index() const { return index_; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ValueOf, "date-field")
-  DECLARE_HYDROGEN_ACCESSOR(ValueOf)
-
- private:
-  Smi* index_;
-};
-
-
-class LSeqStringSetChar: public LTemplateInstruction<1, 3, 0> {
- public:
-  LSeqStringSetChar(String::Encoding encoding,
-                    LOperand* string,
-                    LOperand* index,
-                    LOperand* value) : encoding_(encoding) {
-    inputs_[0] = string;
-    inputs_[1] = index;
-    inputs_[2] = value;
-  }
-
-  String::Encoding encoding() { return encoding_; }
-  LOperand* string() { return inputs_[0]; }
-  LOperand* index() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(SeqStringSetChar, "seq-string-set-char")
-  DECLARE_HYDROGEN_ACCESSOR(SeqStringSetChar)
-
- private:
-  String::Encoding encoding_;
-};
-
-
-class LThrow: public LTemplateInstruction<0, 1, 0> {
- public:
-  explicit LThrow(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Throw, "throw")
-};
-
-
-class LBitNotI: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LBitNotI(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(BitNotI, "bit-not-i")
-};
-
-
-class LAddI: public LTemplateInstruction<1, 2, 0> {
- public:
-  LAddI(LOperand* left, LOperand* right) {
+  DECLARE_CONCRETE_INSTRUCTION(HasInstanceTypeAndBranch,
+                               "has-instance-type-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(HasInstanceTypeAndBranch)
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
+class LIn: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LIn(LOperand* key, LOperand* object) {
+    inputs_[0] = key;
+    inputs_[1] = object;
+  }
+
+  LOperand* key() { return inputs_[0]; }
+  LOperand* object() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(In, "in")
+};
+
+
+class LInnerAllocatedObject: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LInnerAllocatedObject(LOperand* base_object) {
+    inputs_[0] = base_object;
+  }
+
+  LOperand* base_object() { return inputs_[0]; }
+  int offset() { return hydrogen()->offset(); }
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  DECLARE_CONCRETE_INSTRUCTION(InnerAllocatedObject, "sub-allocated-object")
+  DECLARE_HYDROGEN_ACCESSOR(InnerAllocatedObject)
+};
+
+
+class LInstanceOf: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LInstanceOf(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
   }
 
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(AddI, "add-i")
-  DECLARE_HYDROGEN_ACCESSOR(Add)
-};
-
-
-class LMathMinMax: public LTemplateInstruction<1, 2, 0> {
- public:
-  LMathMinMax(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(MathMinMax, "math-min-max")
-  DECLARE_HYDROGEN_ACCESSOR(MathMinMax)
-};
-
-
-class LPower: public LTemplateInstruction<1, 2, 0> {
- public:
-  LPower(LOperand* left, LOperand* right) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Power, "power")
-  DECLARE_HYDROGEN_ACCESSOR(Power)
-};
-
-
-class LRandom: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LRandom(LOperand* global_object) {
-    inputs_[0] = global_object;
-  }
-
-  LOperand* global_object() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Random, "random")
-  DECLARE_HYDROGEN_ACCESSOR(Random)
-};
-
-
-class LArithmeticD: public LTemplateInstruction<1, 2, 0> {
- public:
-  LArithmeticD(Token::Value op, LOperand* left, LOperand* right)
-      : op_(op) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  Token::Value op() const { return op_; }
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-
-  virtual Opcode opcode() const { return LInstruction::kArithmeticD; }
-  virtual void CompileToNative(LCodeGen* generator);
-  virtual const char* Mnemonic() const;
+  DECLARE_CONCRETE_INSTRUCTION(InstanceOf, "instance-of")
+};
+
+
+class LInstanceOfKnownGlobal: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LInstanceOfKnownGlobal(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(InstanceOfKnownGlobal,
+                               "instance-of-known-global")
+  DECLARE_HYDROGEN_ACCESSOR(InstanceOfKnownGlobal)
+
+  Handle<JSFunction> function() const { return hydrogen()->function(); }
+  LEnvironment* GetDeferredLazyDeoptimizationEnvironment() {
+    return lazy_deopt_env_;
+  }
+  virtual void SetDeferredLazyDeoptimizationEnvironment(LEnvironment* env) {
+    lazy_deopt_env_ = env;
+  }
 
  private:
-  Token::Value op_;
-};
-
-
-class LArithmeticT: public LTemplateInstruction<1, 2, 0> {
- public:
-  LArithmeticT(Token::Value op, LOperand* left, LOperand* right)
-      : op_(op) {
-    inputs_[0] = left;
-    inputs_[1] = right;
-  }
-
-  LOperand* left() { return inputs_[0]; }
-  LOperand* right() { return inputs_[1]; }
-  Token::Value op() const { return op_; }
-
-  virtual Opcode opcode() const { return LInstruction::kArithmeticT; }
-  virtual void CompileToNative(LCodeGen* generator);
-  virtual const char* Mnemonic() const;
-
- private:
-  Token::Value op_;
-};
-
-
-class LReturn: public LTemplateInstruction<0, 2, 0> {
- public:
-  explicit LReturn(LOperand* value, LOperand* parameter_count) {
-    inputs_[0] = value;
-    inputs_[1] = parameter_count;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  bool has_constant_parameter_count() {
-    return parameter_count()->IsConstantOperand();
-  }
-  LConstantOperand* constant_parameter_count() {
-    ASSERT(has_constant_parameter_count());
-    return LConstantOperand::cast(parameter_count());
-  }
-  LOperand* parameter_count() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Return, "return")
-};
-
-
-class LLoadNamedField: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LLoadNamedField(LOperand* object) {
-    inputs_[0] = object;
-  }
-
-  LOperand* object() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field")
-  DECLARE_HYDROGEN_ACCESSOR(LoadNamedField)
-};
-
-
-class LLoadNamedFieldPolymorphic: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LLoadNamedFieldPolymorphic(LOperand* object) {
-    inputs_[0] = object;
-  }
-
-  LOperand* object() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field-polymorphic")
-  DECLARE_HYDROGEN_ACCESSOR(LoadNamedFieldPolymorphic)
-};
-
-
-class LLoadNamedGeneric: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LLoadNamedGeneric(LOperand* object) {
-    inputs_[0] = object;
-  }
-
-  LOperand* object() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadNamedGeneric, "load-named-generic")
-  DECLARE_HYDROGEN_ACCESSOR(LoadNamedGeneric)
-
-  Handle<Object> name() const { return hydrogen()->name(); }
-};
-
-
-class LLoadFunctionPrototype: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LLoadFunctionPrototype(LOperand* function) {
+  LEnvironment* lazy_deopt_env_;
+};
+
+
+class LInteger32ToDouble: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LInteger32ToDouble(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Integer32ToDouble, "int32-to-double")
+};
+
+
+class LInteger32ToSmi: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LInteger32ToSmi(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Integer32ToDouble, "int32-to-smi")
+  DECLARE_HYDROGEN_ACCESSOR(Change)
+};
+
+
+class LInvokeFunction: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LInvokeFunction(LOperand* function) {
     inputs_[0] = function;
   }
 
   LOperand* function() { return inputs_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(LoadFunctionPrototype, "load-function-prototype")
-  DECLARE_HYDROGEN_ACCESSOR(LoadFunctionPrototype)
-};
-
-
-class LLoadExternalArrayPointer: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LLoadExternalArrayPointer(LOperand* object) {
-    inputs_[0] = object;
-  }
-
-  LOperand* object() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadExternalArrayPointer,
-                               "load-external-array-pointer")
-};
-
-
-class LLoadKeyed: public LTemplateInstruction<1, 2, 0> {
- public:
-  LLoadKeyed(LOperand* elements, LOperand* key) {
-    inputs_[0] = elements;
-    inputs_[1] = key;
-  }
-
-  LOperand* elements() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  ElementsKind elements_kind() const {
-    return hydrogen()->elements_kind();
-  }
-  bool is_external() const {
-    return hydrogen()->is_external();
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadKeyed, "load-keyed")
-  DECLARE_HYDROGEN_ACCESSOR(LoadKeyed)
-
-  virtual void PrintDataTo(StringStream* stream);
-  uint32_t additional_index() const { return hydrogen()->index_offset(); }
-};
-
-
-class LLoadKeyedGeneric: public LTemplateInstruction<1, 2, 0> {
- public:
-  LLoadKeyedGeneric(LOperand* object, LOperand* key) {
-    inputs_[0] = object;
-    inputs_[1] = key;
-  }
-
-  LOperand* object() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedGeneric, "load-keyed-generic")
-};
-
-
-class LLoadGlobalCell: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalCell, "load-global-cell")
-  DECLARE_HYDROGEN_ACCESSOR(LoadGlobalCell)
-};
-
-
-class LLoadGlobalGeneric: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LLoadGlobalGeneric(LOperand* global_object) {
-    inputs_[0] = global_object;
-  }
-
-  LOperand* global_object() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalGeneric, "load-global-generic")
-  DECLARE_HYDROGEN_ACCESSOR(LoadGlobalGeneric)
-
-  Handle<Object> name() const { return hydrogen()->name(); }
-  bool for_typeof() const { return hydrogen()->for_typeof(); }
-};
-
-
-class LStoreGlobalCell: public LTemplateInstruction<0, 1, 1> {
- public:
-  LStoreGlobalCell(LOperand* value, LOperand* temp) {
+  DECLARE_CONCRETE_INSTRUCTION(InvokeFunction, "invoke-function")
+  DECLARE_HYDROGEN_ACCESSOR(InvokeFunction)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  int arity() const { return hydrogen()->argument_count() - 1; }
+};
+
+
+class LIsConstructCallAndBranch: public LControlInstruction<0, 2> {
+ public:
+  LIsConstructCallAndBranch(LOperand* temp1, LOperand* temp2) {
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
+                               "is-construct-call-and-branch")
+};
+
+
+class LIsObjectAndBranch: public LControlInstruction<1, 2> {
+ public:
+  LIsObjectAndBranch(LOperand* value, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = value;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsObjectAndBranch, "is-object-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(IsObjectAndBranch)
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
+class LIsStringAndBranch: public LControlInstruction<1, 1> {
+ public:
+  LIsStringAndBranch(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
   }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsStringAndBranch, "is-string-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(IsStringAndBranch)
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
+class LIsSmiAndBranch: public LControlInstruction<1, 0> {
+ public:
+  explicit LIsSmiAndBranch(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(IsSmiAndBranch, "is-smi-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(IsSmiAndBranch)
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
+class LIsUndetectableAndBranch: public LControlInstruction<1, 1> {
+ public:
+  explicit LIsUndetectableAndBranch(LOperand* value, LOperand* temp) {
+    inputs_[0] = value;
+    temps_[0] = temp;
+  }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(StoreGlobalCell, "store-global-cell")
-  DECLARE_HYDROGEN_ACCESSOR(StoreGlobalCell)
+  DECLARE_CONCRETE_INSTRUCTION(IsUndetectableAndBranch,
+                               "is-undetectable-and-branch")
+  DECLARE_HYDROGEN_ACCESSOR(IsUndetectableAndBranch)
+
+  virtual void PrintDataTo(StringStream* stream);
 };
 
 
-class LStoreGlobalGeneric: public LTemplateInstruction<0, 2, 0> {
- public:
-  explicit LStoreGlobalGeneric(LOperand* global_object,
-                               LOperand* value) {
-    inputs_[0] = global_object;
-    inputs_[1] = value;
-  }
-
-  LOperand* global_object() { return inputs_[0]; }
-  LOperand* value() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(StoreGlobalGeneric, "store-global-generic")
-  DECLARE_HYDROGEN_ACCESSOR(StoreGlobalGeneric)
-
-  Handle<Object> name() const { return hydrogen()->name(); }
-  StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
-};
-
-
 class LLoadContextSlot: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LLoadContextSlot(LOperand* context) {
     inputs_[0] = context;
   }
 
   LOperand* context() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(LoadContextSlot, "load-context-slot")
   DECLARE_HYDROGEN_ACCESSOR(LoadContextSlot)
 
   int slot_index() { return hydrogen()->slot_index(); }
 
   virtual void PrintDataTo(StringStream* stream);
 };
 
 
-class LStoreContextSlot: public LTemplateInstruction<0, 2, 0> {
- public:
-  LStoreContextSlot(LOperand* context, LOperand* value) {
-    inputs_[0] = context;
-    inputs_[1] = value;
-  }
-
-  LOperand* context() { return inputs_[0]; }
-  LOperand* value() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(StoreContextSlot, "store-context-slot")
-  DECLARE_HYDROGEN_ACCESSOR(StoreContextSlot)
-
-  int slot_index() { return hydrogen()->slot_index(); }
-
-  virtual void PrintDataTo(StringStream* stream);
-};
-
-
-class LPushArgument: public LTemplateInstruction<0, 1, 0> {
- public:
-  explicit LPushArgument(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(PushArgument, "push-argument")
-};
-
-
-class LDrop: public LTemplateInstruction<0, 0, 0> {
- public:
-  explicit LDrop(int count) : count_(count) { }
-
-  int count() const { return count_; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Drop, "drop")
-
- private:
-  int count_;
-};
-
-
-class LInnerAllocatedObject: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LInnerAllocatedObject(LOperand* base_object) {
-    inputs_[0] = base_object;
-  }
-
-  LOperand* base_object() { return inputs_[0]; }
-  int offset() { return hydrogen()->offset(); }
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  DECLARE_CONCRETE_INSTRUCTION(InnerAllocatedObject, "sub-allocated-object")
-  DECLARE_HYDROGEN_ACCESSOR(InnerAllocatedObject)
-};
-
-
-class LThisFunction: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(ThisFunction, "this-function")
-  DECLARE_HYDROGEN_ACCESSOR(ThisFunction)
-};
-
-
-class LContext: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(Context, "context")
-  DECLARE_HYDROGEN_ACCESSOR(Context)
-};
-
-
-class LOuterContext: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LOuterContext(LOperand* context) {
-    inputs_[0] = context;
-  }
-
-  LOperand* context() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(OuterContext, "outer-context")
-};
-
-
-class LDeclareGlobals: public LTemplateInstruction<0, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(DeclareGlobals, "declare-globals")
-  DECLARE_HYDROGEN_ACCESSOR(DeclareGlobals)
-};
-
-
-class LGlobalObject: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LGlobalObject(LOperand* context) {
-    inputs_[0] = context;
-  }
-
-  LOperand* context() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(GlobalObject, "global-object")
-};
-
-
-class LGlobalReceiver: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LGlobalReceiver(LOperand* global_object) {
+class LLoadNamedField: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LLoadNamedField(LOperand* object) {
+    inputs_[0] = object;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field")
+  DECLARE_HYDROGEN_ACCESSOR(LoadNamedField)
+};
+
+
+class LLoadNamedFieldPolymorphic: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LLoadNamedFieldPolymorphic(LOperand* object) {
+    inputs_[0] = object;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field-polymorphic")
+  DECLARE_HYDROGEN_ACCESSOR(LoadNamedFieldPolymorphic)
+};
+
+
+class LFixedArrayBaseLength: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LFixedArrayBaseLength(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(FixedArrayBaseLength, "fixed-array-base-length")
+  DECLARE_HYDROGEN_ACCESSOR(FixedArrayBaseLength)
+};
+
+
+class LFunctionLiteral: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(FunctionLiteral, "function-literal")
+  DECLARE_HYDROGEN_ACCESSOR(FunctionLiteral)
+};
+
+
+class LLoadExternalArrayPointer: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LLoadExternalArrayPointer(LOperand* object) {
+    inputs_[0] = object;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadExternalArrayPointer,
+                               "load-external-array-pointer")
+};
+
+
+class LLoadFunctionPrototype: public LTemplateInstruction<1, 1, 1> {
+ public:
+  LLoadFunctionPrototype(LOperand* function, LOperand* temp) {
+    inputs_[0] = function;
+    temps_[0] = temp;
+  }
+
+  LOperand* function() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadFunctionPrototype, "load-function-prototype")
+  DECLARE_HYDROGEN_ACCESSOR(LoadFunctionPrototype)
+};
+
+
+class LLoadGlobalCell: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalCell, "load-global-cell")
+  DECLARE_HYDROGEN_ACCESSOR(LoadGlobalCell)
+};
+
+
+class LLoadGlobalGeneric: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LLoadGlobalGeneric(LOperand* global_object) {
     inputs_[0] = global_object;
   }
 
   LOperand* global_object() { return inputs_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(GlobalReceiver, "global-receiver")
-};
-
-
-class LCallConstantFunction: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(CallConstantFunction, "call-constant-function")
-  DECLARE_HYDROGEN_ACCESSOR(CallConstantFunction)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  Handle<JSFunction> function() { return hydrogen()->function(); }
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-class LInvokeFunction: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LInvokeFunction(LOperand* function) {
-    inputs_[0] = function;
-  }
-
-  LOperand* function() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(InvokeFunction, "invoke-function")
-  DECLARE_HYDROGEN_ACCESSOR(InvokeFunction)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-class LCallKeyed: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LCallKeyed(LOperand* key) {
-    inputs_[0] = key;
-  }
-
-  LOperand* key() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CallKeyed, "call-keyed")
-  DECLARE_HYDROGEN_ACCESSOR(CallKeyed)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-
-class LCallNamed: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(CallNamed, "call-named")
-  DECLARE_HYDROGEN_ACCESSOR(CallNamed)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  Handle<String> name() const { return hydrogen()->name(); }
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-class LCallFunction: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LCallFunction(LOperand* function) {
-    inputs_[0] = function;
-  }
-
-  LOperand* function() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CallFunction, "call-function")
-  DECLARE_HYDROGEN_ACCESSOR(CallFunction)
-
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-class LCallGlobal: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(CallGlobal, "call-global")
-  DECLARE_HYDROGEN_ACCESSOR(CallGlobal)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  Handle<String> name() const {return hydrogen()->name(); }
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-class LCallKnownGlobal: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(CallKnownGlobal, "call-known-global")
-  DECLARE_HYDROGEN_ACCESSOR(CallKnownGlobal)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  int arity() const { return hydrogen()->argument_count() - 1;  }
-};
-
-
-class LCallNew: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LCallNew(LOperand* constructor) {
-    inputs_[0] = constructor;
-  }
-
-  LOperand* constructor() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CallNew, "call-new")
-  DECLARE_HYDROGEN_ACCESSOR(CallNew)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-class LCallNewArray: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LCallNewArray(LOperand* constructor) {
-    inputs_[0] = constructor;
-  }
-
-  LOperand* constructor() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CallNewArray, "call-new-array")
-  DECLARE_HYDROGEN_ACCESSOR(CallNewArray)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  int arity() const { return hydrogen()->argument_count() - 1; }
-};
-
-
-class LCallRuntime: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(CallRuntime, "call-runtime")
-  DECLARE_HYDROGEN_ACCESSOR(CallRuntime)
-
-  const Runtime::Function* function() const { return hydrogen()->function(); }
-  int arity() const { return hydrogen()->argument_count(); }
-};
-
-
-class LInteger32ToDouble: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LInteger32ToDouble(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Integer32ToDouble, "int32-to-double")
-};
-
-
-class LInteger32ToSmi: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LInteger32ToSmi(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Integer32ToSmi, "int32-to-smi")
-  DECLARE_HYDROGEN_ACCESSOR(Change)
-};
-
-
-class LUint32ToDouble: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LUint32ToDouble(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Uint32ToDouble, "uint32-to-double")
-};
-
-
-class LNumberTagI: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LNumberTagI(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(NumberTagI, "number-tag-i")
-};
-
-
-class LNumberTagU: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LNumberTagU(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(NumberTagU, "number-tag-u")
+  DECLARE_CONCRETE_INSTRUCTION(LoadGlobalGeneric, "load-global-generic")
+  DECLARE_HYDROGEN_ACCESSOR(LoadGlobalGeneric)
+
+  Handle<Object> name() const { return hydrogen()->name(); }
+  bool for_typeof() const { return hydrogen()->for_typeof(); }
+};
+
+
+template<int T>
+class LLoadKeyed: public LTemplateInstruction<1, 2, T> {
+ public:
+  LLoadKeyed(LOperand* elements, LOperand* key) {
+    this->inputs_[0] = elements;
+    this->inputs_[1] = key;
+  }
+
+  LOperand* elements() { return this->inputs_[0]; }
+  LOperand* key() { return this->inputs_[1]; }
+  ElementsKind elements_kind() const {
+    return this->hydrogen()->elements_kind();
+  }
+  bool is_external() const {
+    return this->hydrogen()->is_external();
+  }
+  uint32_t additional_index() const {
+    return this->hydrogen()->index_offset();
+  }
+  void PrintDataTo(StringStream* stream) {
+    this->elements()->PrintTo(stream);
+    stream->Add("[");
+    this->key()->PrintTo(stream);
+    if (this->hydrogen()->IsDehoisted()) {
+      stream->Add(" + %d]", this->additional_index());
+    } else {
+      stream->Add("]");
+    }
+  }
+
+  DECLARE_HYDROGEN_ACCESSOR(LoadKeyed)
+};
+
+
+class LLoadKeyedExternal: public LLoadKeyed<1> {
+ public:
+  LLoadKeyedExternal(LOperand* elements, LOperand* key, LOperand* temp) :
+      LLoadKeyed<1>(elements, key) {
+    temps_[0] = temp;
+  }
+
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedExternal, "load-keyed-external");
+};
+
+
+class LLoadKeyedFixed: public LLoadKeyed<1> {
+ public:
+  LLoadKeyedFixed(LOperand* elements, LOperand* key, LOperand* temp) :
+      LLoadKeyed<1>(elements, key) {
+    temps_[0] = temp;
+  }
+
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedFixed, "load-keyed-fixed");
+};
+
+
+class LLoadKeyedFixedDouble: public LLoadKeyed<1> {
+ public:
+  LLoadKeyedFixedDouble(LOperand* elements, LOperand* key, LOperand* temp) :
+      LLoadKeyed<1>(elements, key) {
+    temps_[0] = temp;
+  }
+
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedFixedDouble, "load-keyed-fixed-double");
+};
+
+
+class LLoadKeyedGeneric: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LLoadKeyedGeneric(LOperand* object, LOperand* key) {
+    inputs_[0] = object;
+    inputs_[1] = key;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+  LOperand* key() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedGeneric, "load-keyed-generic")
+};
+
+
+class LLoadNamedGeneric: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LLoadNamedGeneric(LOperand* object) {
+    inputs_[0] = object;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(LoadNamedGeneric, "load-named-generic")
+  DECLARE_HYDROGEN_ACCESSOR(LoadNamedGeneric)
+
+  Handle<Object> name() const { return hydrogen()->name(); }
+};
+
+
+class LMapEnumLength: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LMapEnumLength(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(MapEnumLength, "map-enum-length")
+};
+
+
+template<int T>
+class LUnaryMathOperation: public LTemplateInstruction<1, 1, T> {
+ public:
+  explicit LUnaryMathOperation(LOperand* value) {
+    this->inputs_[0] = value;
+  }
+
+  LOperand* value() { return this->inputs_[0]; }
+  BuiltinFunctionId op() const { return this->hydrogen()->op(); }
+
+  void PrintDataTo(StringStream* stream);
+
+  DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
+};
+
+
+class LMathAbs: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathAbs(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathAbs, "math-abs")
+};
+
+
+class LMathAbsTagged: public LUnaryMathOperation<3> {
+ public:
+  LMathAbsTagged(LOperand* value,
+                      LOperand* temp1, LOperand* temp2, LOperand* temp3)
+      : LUnaryMathOperation<3>(value) {
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+    temps_[2] = temp3;
+  }
+
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+  LOperand* temp3() { return temps_[2]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(MathAbsTagged, "math-abs-tagged")
+};
+
+
+class LMathCos: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathCos(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathCos, "math-cos")
+};
+
+
+class LMathExp: public LUnaryMathOperation<4> {
+ public:
+  LMathExp(LOperand* value,
+                LOperand* double_temp1,
+                LOperand* temp1,
+                LOperand* temp2,
+                LOperand* temp3)
+      : LUnaryMathOperation<4>(value) {
+    temps_[0] = double_temp1;
+    temps_[1] = temp1;
+    temps_[2] = temp2;
+    temps_[3] = temp3;
+    ExternalReference::InitializeMathExpData();
+  }
+
+  LOperand* double_temp1() { return temps_[0]; }
+  LOperand* temp1() { return temps_[1]; }
+  LOperand* temp2() { return temps_[2]; }
+  LOperand* temp3() { return temps_[3]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(MathExp, "math-exp")
+};
+
+
+class LMathFloor: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathFloor(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathFloor, "math-floor")
+};
+
+
+class LMathLog: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathLog(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathLog, "math-log")
+};
+
+
+class LMathMinMax: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LMathMinMax(LOperand* left, LOperand* right) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+  }
+
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(MathMinMax, "math-min-max")
+  DECLARE_HYDROGEN_ACCESSOR(MathMinMax)
+};
+
+
+class LMathPowHalf: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathPowHalf(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathPowHalf, "math-pow-half")
+};
+
+
+class LMathRound: public LUnaryMathOperation<1> {
+ public:
+  LMathRound(LOperand* value, LOperand* temp1)
+      : LUnaryMathOperation<1>(value) {
+    temps_[0] = temp1;
+  }
+
+  LOperand* temp1() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(MathRound, "math-round")
+};
+
+
+class LMathSin: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathSin(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathSin, "math-sin")
+};
+
+
+class LMathSqrt: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathSqrt(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathSqrt, "math-sqrt")
+};
+
+
+class LMathTan: public LUnaryMathOperation<0> {
+ public:
+  explicit LMathTan(LOperand* value) : LUnaryMathOperation<0>(value) { }
+  DECLARE_CONCRETE_INSTRUCTION(MathTan, "math-tan")
+};
+
+
+class LMulConstI: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LMulConstI(LOperand* left, LConstantOperand* right) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+  }
+
+  LOperand* left() { return inputs_[0]; }
+  LConstantOperand* right() { return LConstantOperand::cast(inputs_[1]); }
+
+  DECLARE_CONCRETE_INSTRUCTION(MulConstI, "mul-const-i")
+  DECLARE_HYDROGEN_ACCESSOR(Mul)
+};
+
+
+class LMulI: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LMulI(LOperand* left, LOperand* right) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+  }
+
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(MulI, "mul-i")
+  DECLARE_HYDROGEN_ACCESSOR(Mul)
 };
 
 
 class LNumberTagD: public LTemplateInstruction<1, 1, 2> {
  public:
-  LNumberTagD(LOperand* value, LOperand* temp, LOperand* temp2) {
-    inputs_[0] = value;
-    temps_[0] = temp;
+  LNumberTagD(LOperand* value, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = value;
+    temps_[0] = temp1;
     temps_[1] = temp2;
   }
 
   LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
+  LOperand* temp1() { return temps_[0]; }
   LOperand* temp2() { return temps_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(NumberTagD, "number-tag-d")
   DECLARE_HYDROGEN_ACCESSOR(Change)
 };
 
 
-class LDoubleToSmi: public LTemplateInstruction<1, 1, 2> {
- public:
-  LDoubleToSmi(LOperand* value, LOperand* temp, LOperand* temp2) {
+class LNumberTagU: public LTemplateInstruction<1, 1, 2> {
+ public:
+  explicit LNumberTagU(LOperand* value,
+                       LOperand* temp1,
+                       LOperand* temp2) {
+    inputs_[0] = value;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(NumberTagU, "number-tag-u")
+};
+
+
+class LNumberUntagD: public LTemplateInstruction<1, 1, 1> {
+ public:
+  LNumberUntagD(LOperand* value, LOperand* temp) {
     inputs_[0] = value;
     temps_[0] = temp;
-    temps_[1] = temp2;
-  }
-
-  LOperand* value() { return inputs_[0]; }
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
   LOperand* temp() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(DoubleToSmi, "double-to-smi")
-  DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
-
-  bool truncating() { return hydrogen()->CanTruncateToInt32(); }
-};
-
-
-// Sometimes truncating conversion from a tagged value to an int32.
-class LDoubleToI: public LTemplateInstruction<1, 1, 2> {
- public:
-  LDoubleToI(LOperand* value, LOperand* temp, LOperand* temp2) {
-    inputs_[0] = value;
+
+  DECLARE_CONCRETE_INSTRUCTION(NumberUntagD, "double-untag")
+  DECLARE_HYDROGEN_ACCESSOR(Change)
+};
+
+
+class LParameter: public LTemplateInstruction<1, 0, 0> {
+ public:
+  virtual bool HasInterestingComment(LCodeGen* gen) const { return false; }
+  DECLARE_CONCRETE_INSTRUCTION(Parameter, "parameter")
+};
+
+
+class LPushArgument: public LTemplateInstruction<0, 1, 0> {
+ public:
+  explicit LPushArgument(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(PushArgument, "push-argument")
+};
+
+
+class LReturn: public LTemplateInstruction<0, 2, 0> {
+ public:
+  LReturn(LOperand* value, LOperand* parameter_count) {
+    inputs_[0] = value;
+    inputs_[1] = parameter_count;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* parameter_count() { return inputs_[1]; }
+
+  bool has_constant_parameter_count() {
+    return parameter_count()->IsConstantOperand();
+  }
+  LConstantOperand* constant_parameter_count() {
+    ASSERT(has_constant_parameter_count());
+    return LConstantOperand::cast(parameter_count());
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(Return, "return")
+};
+
+
+class LSeqStringSetChar: public LTemplateInstruction<1, 3, 1> {
+ public:
+  LSeqStringSetChar(String::Encoding encoding,
+                    LOperand* string,
+                    LOperand* index,
+                    LOperand* value,
+                    LOperand* temp) : encoding_(encoding) {
+    inputs_[0] = string;
+    inputs_[1] = index;
+    inputs_[2] = value;
     temps_[0] = temp;
-    temps_[1] = temp2;
-  }
-
-  LOperand* value() { return inputs_[0]; }
+  }
+
+  String::Encoding encoding() { return encoding_; }
+  LOperand* string() { return inputs_[0]; }
+  LOperand* index() { return inputs_[1]; }
+  LOperand* value() { return inputs_[2]; }
   LOperand* temp() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(DoubleToI, "double-to-i")
-  DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
-
-  bool truncating() { return hydrogen()->CanTruncateToInt32(); }
-};
-
-
-// Truncating conversion from a tagged value to an int32.
-class LTaggedToI: public LTemplateInstruction<1, 1, 3> {
- public:
-  LTaggedToI(LOperand* value,
-             LOperand* temp,
-             LOperand* temp2,
-             LOperand* temp3) {
-    inputs_[0] = value;
-    temps_[0] = temp;
-    temps_[1] = temp2;
-    temps_[2] = temp3;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-  LOperand* temp3() { return temps_[2]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(TaggedToI, "tagged-to-i")
-  DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
-
-  bool truncating() { return hydrogen()->CanTruncateToInt32(); }
-};
-
-
+
+  DECLARE_CONCRETE_INSTRUCTION(SeqStringSetChar, "seq-string-set-char")
+  DECLARE_HYDROGEN_ACCESSOR(SeqStringSetChar)
+
+ private:
+  String::Encoding encoding_;
+};
+
+
 class LSmiTag: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LSmiTag(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(SmiTag, "smi-tag")
 };
 
 
-class LNumberUntagD: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LNumberUntagD(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(NumberUntagD, "double-untag")
-  DECLARE_HYDROGEN_ACCESSOR(Change)
-};
-
-
 class LSmiUntag: public LTemplateInstruction<1, 1, 0> {
  public:
   LSmiUntag(LOperand* value, bool needs_check)
       : needs_check_(needs_check) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
   bool needs_check() const { return needs_check_; }
 
   DECLARE_CONCRETE_INSTRUCTION(SmiUntag, "smi-untag")
 
  private:
   bool needs_check_;
 };
 
 
-class LStoreNamedField: public LTemplateInstruction<0, 2, 1> {
+class LStackCheck: public LTemplateInstruction<0, 0, 0> {
  public:
-  LStoreNamedField(LOperand* object, LOperand* value, LOperand* temp) {
-    inputs_[0] = object;
-    inputs_[1] = value;
-    temps_[0] = temp;
-  }
+  DECLARE_CONCRETE_INSTRUCTION(StackCheck, "stack-check")
+  DECLARE_HYDROGEN_ACCESSOR(StackCheck)
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* value() { return inputs_[1]; }
-  LOperand* temp() { return temps_[0]; }
+  Label* done_label() { return &done_label_; }
 
-  DECLARE_CONCRETE_INSTRUCTION(StoreNamedField, "store-named-field")
-  DECLARE_HYDROGEN_ACCESSOR(StoreNamedField)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  Handle<Map> transition() const { return hydrogen()->transition(); }
-  Representation representation() const {
-    return hydrogen()->field_representation();
-  }
+ private:
+  Label done_label_;
 };
 
 
-class LStoreNamedGeneric: public LTemplateInstruction<0, 2, 0> {
+template<int T>
+class LStoreKeyed: public LTemplateInstruction<0, 3, T> {
  public:
-  LStoreNamedGeneric(LOperand* object, LOperand* value) {
-    inputs_[0] = object;
-    inputs_[1] = value;
+  LStoreKeyed(LOperand* elements, LOperand* key, LOperand* value) {
+    this->inputs_[0] = elements;
+    this->inputs_[1] = key;
+    this->inputs_[2] = value;
   }
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* value() { return inputs_[1]; }
+  bool is_external() const { return this->hydrogen()->is_external(); }
+  LOperand* elements() { return this->inputs_[0]; }
+  LOperand* key() { return this->inputs_[1]; }
+  LOperand* value() { return this->inputs_[2]; }
+  ElementsKind elements_kind() const {
+    return this->hydrogen()->elements_kind();
+  }
 
-  DECLARE_CONCRETE_INSTRUCTION(StoreNamedGeneric, "store-named-generic")
-  DECLARE_HYDROGEN_ACCESSOR(StoreNamedGeneric)
+  bool NeedsCanonicalization() {
+    return this->hydrogen()->NeedsCanonicalization();
+  }
+  uint32_t additional_index() const { return this->hydrogen()->index_offset(); }
 
-  virtual void PrintDataTo(StringStream* stream);
+  void PrintDataTo(StringStream* stream) {
+    this->elements()->PrintTo(stream);
+    stream->Add("[");
+    this->key()->PrintTo(stream);
+    if (this->hydrogen()->IsDehoisted()) {
+      stream->Add(" + %d] <-", this->additional_index());
+    } else {
+      stream->Add("] <- ");
+    }
 
-  Handle<Object> name() const { return hydrogen()->name(); }
-  StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
+    if (this->value() == NULL) {
+      ASSERT(hydrogen()->IsConstantHoleStore() &&
+             hydrogen()->value()->representation().IsDouble());
+      stream->Add("<the hole(nan)>");
+    } else {
+      this->value()->PrintTo(stream);
+    }
+  }
+
+  DECLARE_HYDROGEN_ACCESSOR(StoreKeyed)
 };
 
 
-class LStoreKeyed: public LTemplateInstruction<0, 3, 0> {
+class LStoreKeyedExternal: public LStoreKeyed<1> {
  public:
-  LStoreKeyed(LOperand* object, LOperand* key, LOperand* value) {
-    inputs_[0] = object;
-    inputs_[1] = key;
-    inputs_[2] = value;
-  }
+  LStoreKeyedExternal(LOperand* elements, LOperand* key, LOperand* value,
+                      LOperand* temp) :
+      LStoreKeyed<1>(elements, key, value) {
+    temps_[0] = temp;
+  };
 
-  bool is_external() const { return hydrogen()->is_external(); }
-  LOperand* elements() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
-  ElementsKind elements_kind() const {
-    return hydrogen()->elements_kind();
-  }
+  LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(StoreKeyed, "store-keyed")
-  DECLARE_HYDROGEN_ACCESSOR(StoreKeyed)
-
-  virtual void PrintDataTo(StringStream* stream);
-  bool NeedsCanonicalization() { return hydrogen()->NeedsCanonicalization(); }
-  uint32_t additional_index() const { return hydrogen()->index_offset(); }
+  DECLARE_CONCRETE_INSTRUCTION(StoreKeyedExternal, "store-keyed-external")
 };
 
 
+class LStoreKeyedFixed: public LStoreKeyed<1> {
+ public:
+  LStoreKeyedFixed(LOperand* elements, LOperand* key, LOperand* value,
+                   LOperand* temp) :
+      LStoreKeyed<1>(elements, key, value) {
+    temps_[0] = temp;
+  };
+
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreKeyedFixed, "store-keyed-fixed")
+};
+
+
+class LStoreKeyedFixedDouble: public LStoreKeyed<1> {
+ public:
+  LStoreKeyedFixedDouble(LOperand* elements, LOperand* key, LOperand* value,
+                         LOperand* temp) :
+      LStoreKeyed<1>(elements, key, value) {
+    temps_[0] = temp;
+  };
+
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreKeyedFixedDouble,
+                               "store-keyed-fixed-double")
+};
+
+
 class LStoreKeyedGeneric: public LTemplateInstruction<0, 3, 0> {
  public:
   LStoreKeyedGeneric(LOperand* obj, LOperand* key, LOperand* value) {
     inputs_[0] = obj;
     inputs_[1] = key;
     inputs_[2] = value;
   }
 
   LOperand* object() { return inputs_[0]; }
   LOperand* key() { return inputs_[1]; }
   LOperand* value() { return inputs_[2]; }
 
   DECLARE_CONCRETE_INSTRUCTION(StoreKeyedGeneric, "store-keyed-generic")
   DECLARE_HYDROGEN_ACCESSOR(StoreKeyedGeneric)
 
   virtual void PrintDataTo(StringStream* stream);
 
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
 
-class LTransitionElementsKind: public LTemplateInstruction<0, 1, 2> {
+class LStoreNamedField: public LTemplateInstruction<0, 2, 2> {
  public:
-  LTransitionElementsKind(LOperand* object,
-                          LOperand* new_map_temp,
-                          LOperand* fixed_object_temp) {
+  LStoreNamedField(LOperand* object, LOperand* value,
+                   LOperand* temp0, LOperand* temp1) {
     inputs_[0] = object;
-    temps_[0] = new_map_temp;
-    temps_[1] = fixed_object_temp;
+    inputs_[1] = value;
+    temps_[0] = temp0;
+    temps_[1] = temp1;
   }
 
   LOperand* object() { return inputs_[0]; }
-  LOperand* new_map_temp() { return temps_[0]; }
-  LOperand* temp() { return temps_[1]; }
+  LOperand* value() { return inputs_[1]; }
+  LOperand* temp0() { return temps_[0]; }
+  LOperand* temp1() { return temps_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(TransitionElementsKind,
-                               "transition-elements-kind")
-  DECLARE_HYDROGEN_ACCESSOR(TransitionElementsKind)
+  DECLARE_CONCRETE_INSTRUCTION(StoreNamedField, "store-named-field")
+  DECLARE_HYDROGEN_ACCESSOR(StoreNamedField)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  Handle<Map> original_map() { return hydrogen()->original_map(); }
-  Handle<Map> transitioned_map() { return hydrogen()->transitioned_map(); }
-  ElementsKind from_kind() { return hydrogen()->from_kind(); }
-  ElementsKind to_kind() { return hydrogen()->to_kind(); }
+  Handle<Map> transition() const { return hydrogen()->transition(); }
+  Representation representation() const {
+    return hydrogen()->field_representation();
+  }
 };
 
 
-class LTrapAllocationMemento : public LTemplateInstruction<0, 1, 1> {
+class LStoreNamedGeneric: public LTemplateInstruction<0, 2, 0> {
  public:
-  LTrapAllocationMemento(LOperand* object,
-                         LOperand* temp) {
+  LStoreNamedGeneric(LOperand* object, LOperand* value) {
     inputs_[0] = object;
-    temps_[0] = temp;
+    inputs_[1] = value;
   }
 
   LOperand* object() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
+  LOperand* value() { return inputs_[1]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(TrapAllocationMemento,
-                               "trap-allocation-memento")
+  DECLARE_CONCRETE_INSTRUCTION(StoreNamedGeneric, "store-named-generic")
+  DECLARE_HYDROGEN_ACCESSOR(StoreNamedGeneric)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  Handle<Object> name() const { return hydrogen()->name(); }
+  StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
 
 class LStringAdd: public LTemplateInstruction<1, 2, 0> {
  public:
   LStringAdd(LOperand* left, LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
   }
 
@@ skipping 40 matching lines @@
     inputs_[0] = string;
   }
 
   LOperand* string() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(StringLength, "string-length")
   DECLARE_HYDROGEN_ACCESSOR(StringLength)
 };
 
 
-class LCheckFunction: public LTemplateInstruction<0, 1, 0> {
- public:
-  explicit LCheckFunction(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CheckFunction, "check-function")
-  DECLARE_HYDROGEN_ACCESSOR(CheckFunction)
-};
-
-
-class LCheckInstanceType: public LTemplateInstruction<0, 1, 0> {
- public:
-  explicit LCheckInstanceType(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CheckInstanceType, "check-instance-type")
-  DECLARE_HYDROGEN_ACCESSOR(CheckInstanceType)
-};
-
-
-class LCheckMaps: public LTemplateInstruction<0, 1, 0> {
- public:
-  explicit LCheckMaps(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CheckMaps, "check-maps")
-  DECLARE_HYDROGEN_ACCESSOR(CheckMaps)
-};
-
-
-class LCheckPrototypeMaps: public LTemplateInstruction<0, 0, 2> {
- public:
-  LCheckPrototypeMaps(LOperand* temp, LOperand* temp2)  {
+// Truncating conversion from a tagged value to an int32.
+class LTaggedToI: public LTemplateInstruction<1, 1, 2> {
+ public:
+  explicit LTaggedToI(LOperand* value, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = value;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(TaggedToI, "tagged-to-i")
+  DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
+
+  bool truncating() { return hydrogen()->CanTruncateToInt32(); }
+};
+
+
+class LShiftI: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LShiftI(Token::Value op, LOperand* left, LOperand* right, bool can_deopt)
+      : op_(op), can_deopt_(can_deopt) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+  }
+
+  Token::Value op() const { return op_; }
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+  bool can_deopt() const { return can_deopt_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ShiftI, "shift-i")
+
+ private:
+  Token::Value op_;
+  bool can_deopt_;
+};
+
+
+class LStoreContextSlot: public LTemplateInstruction<0, 2, 1> {
+ public:
+  LStoreContextSlot(LOperand* context, LOperand* value, LOperand* temp) {
+    inputs_[0] = context;
+    inputs_[1] = value;
     temps_[0] = temp;
-    temps_[1] = temp2;
-  }
-
+  }
+
+  LOperand* context() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
   LOperand* temp() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CheckPrototypeMaps, "check-prototype-maps")
-  DECLARE_HYDROGEN_ACCESSOR(CheckPrototypeMaps)
-
-  ZoneList<Handle<JSObject> >* prototypes() const {
-    return hydrogen()->prototypes();
-  }
-  ZoneList<Handle<Map> >* maps() const { return hydrogen()->maps(); }
-};
-
-
-class LCheckSmi: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LCheckSmi(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CheckSmi, "check-smi")
-};
-
-
-class LCheckNonSmi: public LTemplateInstruction<0, 1, 0> {
- public:
-  explicit LCheckNonSmi(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(CheckNonSmi, "check-non-smi")
-};
-
-
-class LClampDToUint8: public LTemplateInstruction<1, 1, 1> {
- public:
-  LClampDToUint8(LOperand* unclamped, LOperand* temp) {
-    inputs_[0] = unclamped;
-    temps_[0] = temp;
-  }
-
-  LOperand* unclamped() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ClampDToUint8, "clamp-d-to-uint8")
-};
-
-
-class LClampIToUint8: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LClampIToUint8(LOperand* unclamped) {
-    inputs_[0] = unclamped;
-  }
-
-  LOperand* unclamped() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ClampIToUint8, "clamp-i-to-uint8")
-};
-
-
-class LClampTToUint8: public LTemplateInstruction<1, 1, 1> {
- public:
-  LClampTToUint8(LOperand* unclamped, LOperand* temp) {
-    inputs_[0] = unclamped;
-    temps_[0] = temp;
-  }
-
-  LOperand* unclamped() { return inputs_[0]; }
-  LOperand* temp() { return temps_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ClampTToUint8, "clamp-t-to-uint8")
-};
-
-
-class LAllocate: public LTemplateInstruction<1, 2, 2> {
- public:
-  LAllocate(LOperand* size, LOperand* temp1, LOperand* temp2) {
-    inputs_[1] = size;
-    temps_[0] = temp1;
-    temps_[1] = temp2;
-  }
-
-  LOperand* size() { return inputs_[1]; }
-  LOperand* temp1() { return temps_[0]; }
-  LOperand* temp2() { return temps_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Allocate, "allocate")
-  DECLARE_HYDROGEN_ACCESSOR(Allocate)
-};
-
-
-class LRegExpLiteral: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(RegExpLiteral, "regexp-literal")
-  DECLARE_HYDROGEN_ACCESSOR(RegExpLiteral)
-};
-
-
-class LFunctionLiteral: public LTemplateInstruction<1, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(FunctionLiteral, "function-literal")
-  DECLARE_HYDROGEN_ACCESSOR(FunctionLiteral)
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreContextSlot, "store-context-slot")
+  DECLARE_HYDROGEN_ACCESSOR(StoreContextSlot)
+
+  int slot_index() { return hydrogen()->slot_index(); }
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
+class LStoreGlobalCell: public LTemplateInstruction<0, 1, 2> {
+ public:
+  LStoreGlobalCell(LOperand* value, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = value;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreGlobalCell, "store-global-cell")
+  DECLARE_HYDROGEN_ACCESSOR(StoreGlobalCell)
+};
+
+
+class LStoreGlobalGeneric: public LTemplateInstruction<0, 2, 0> {
+ public:
+  LStoreGlobalGeneric(LOperand* global_object, LOperand* value) {
+    inputs_[0] = global_object;
+    inputs_[1] = value;
+  }
+
+  LOperand* global_object() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreGlobalGeneric, "store-global-generic")
+  DECLARE_HYDROGEN_ACCESSOR(StoreGlobalGeneric)
+
+  Handle<Object> name() const { return hydrogen()->name(); }
+  StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
+};
+
+
+class LSubI: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LSubI(LOperand* left, LOperand* right) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+  }
+
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(SubI, "sub-i")
+  DECLARE_HYDROGEN_ACCESSOR(Sub)
+};
+
+
+class LThisFunction: public LTemplateInstruction<1, 0, 0> {
+ public:
+  DECLARE_CONCRETE_INSTRUCTION(ThisFunction, "this-function")
+  DECLARE_HYDROGEN_ACCESSOR(ThisFunction)
+};
+
+
+class LThrow: public LTemplateInstruction<0, 1, 0> {
+ public:
+  explicit LThrow(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Throw, "throw")
 };
 
 
 class LToFastProperties: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LToFastProperties(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ToFastProperties, "to-fast-properties")
   DECLARE_HYDROGEN_ACCESSOR(ToFastProperties)
 };
 
 
+class LTransitionElementsKind: public LTemplateInstruction<0, 1, 2> {
+ public:
+  LTransitionElementsKind(LOperand* object,
+                          LOperand* temp1,
+                          LOperand* temp2) {
+    inputs_[0] = object;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(TransitionElementsKind,
+                               "transition-elements-kind")
+  DECLARE_HYDROGEN_ACCESSOR(TransitionElementsKind)
+
+  virtual void PrintDataTo(StringStream* stream);
+
+  Handle<Map> original_map() { return hydrogen()->original_map(); }
+  Handle<Map> transitioned_map() { return hydrogen()->transitioned_map(); }
+  ElementsKind from_kind() { return hydrogen()->from_kind(); }
+  ElementsKind to_kind() { return hydrogen()->to_kind(); }
+};
+
+
+class LTrapAllocationMemento : public LTemplateInstruction<0, 1, 2> {
+ public:
+  LTrapAllocationMemento(LOperand* object, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = object;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* object() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(TrapAllocationMemento, "trap-allocation-memento")
+};
+
+
 class LTypeof: public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LTypeof(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(Typeof, "typeof")
 };
 
 
-class LTypeofIsAndBranch: public LControlInstruction<1, 0> {
- public:
-  explicit LTypeofIsAndBranch(LOperand* value) {
-    inputs_[0] = value;
-  }
-
-  LOperand* value() { return inputs_[0]; }
+class LTypeofIsAndBranch: public LControlInstruction<1, 2> {
+ public:
+  LTypeofIsAndBranch(LOperand* value, LOperand* temp1, LOperand* temp2) {
+    inputs_[0] = value;
+    temps_[0] = temp1;
+    temps_[1] = temp2;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp1() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(TypeofIsAndBranch, "typeof-is-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(TypeofIsAndBranch)
 
   Handle<String> type_literal() { return hydrogen()->type_literal(); }
 
   virtual void PrintDataTo(StringStream* stream);
 };
 
 
-class LIsConstructCallAndBranch: public LControlInstruction<0, 1> {
- public:
-  explicit LIsConstructCallAndBranch(LOperand* temp) {
+class LUint32ToDouble: public LTemplateInstruction<1, 1, 0> {
+ public:
+  explicit LUint32ToDouble(LOperand* value) {
+    inputs_[0] = value;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Uint32ToDouble, "uint32-to-double")
+};
+
+
+class LValueOf: public LTemplateInstruction<1, 1, 1> {
+ public:
+  LValueOf(LOperand* value, LOperand* temp) {
+    inputs_[0] = value;
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
   LOperand* temp() { return temps_[0]; }
 
-  DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
-                               "is-construct-call-and-branch")
-};
-
-
-class LDeleteProperty: public LTemplateInstruction<1, 2, 0> {
- public:
-  LDeleteProperty(LOperand* object, LOperand* key) {
-    inputs_[0] = object;
-    inputs_[1] = key;
-  }
-
-  LOperand* object() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(DeleteProperty, "delete-property")
-};
-
-
-class LOsrEntry: public LTemplateInstruction<0, 0, 0> {
- public:
-  LOsrEntry();
-
-  virtual bool HasInterestingComment(LCodeGen* gen) const { return false; }
-  DECLARE_CONCRETE_INSTRUCTION(OsrEntry, "osr-entry")
-
-  LOperand** SpilledRegisterArray() { return register_spills_; }
-  LOperand** SpilledDoubleRegisterArray() { return double_register_spills_; }
-
-  void MarkSpilledRegister(int allocation_index, LOperand* spill_operand);
-  void MarkSpilledDoubleRegister(int allocation_index,
-                                 LOperand* spill_operand);
-
- private:
-  // Arrays of spill slot operands for registers with an assigned spill
-  // slot, i.e., that must also be restored to the spill slot on OSR entry.
-  // NULL if the register has no assigned spill slot.  Indexed by allocation
-  // index.
-  LOperand* register_spills_[Register::kMaxNumAllocatableRegisters];
-  LOperand* double_register_spills_[
-      DoubleRegister::kMaxNumAllocatableRegisters];
-};
-
-
-class LStackCheck: public LTemplateInstruction<0, 0, 0> {
- public:
-  DECLARE_CONCRETE_INSTRUCTION(StackCheck, "stack-check")
-  DECLARE_HYDROGEN_ACCESSOR(StackCheck)
-
-  Label* done_label() { return &done_label_; }
-
- private:
-  Label done_label_;
-};
-
-
-class LIn: public LTemplateInstruction<1, 2, 0> {
- public:
-  LIn(LOperand* key, LOperand* object) {
-    inputs_[0] = key;
-    inputs_[1] = object;
-  }
-
-  LOperand* key() { return inputs_[0]; }
-  LOperand* object() { return inputs_[1]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(In, "in")
-};
-
-
-class LForInPrepareMap: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LForInPrepareMap(LOperand* object) {
-    inputs_[0] = object;
-  }
-
-  LOperand* object() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ForInPrepareMap, "for-in-prepare-map")
-};
-
-
-class LForInCacheArray: public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LForInCacheArray(LOperand* map) {
-    inputs_[0] = map;
-  }
-
-  LOperand* map() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(ForInCacheArray, "for-in-cache-array")
-
-  int idx() {
-    return HForInCacheArray::cast(this->hydrogen_value())->idx();
-  }
-};
-
-
-class LCheckMapValue: public LTemplateInstruction<0, 2, 0> {
- public:
-  LCheckMapValue(LOperand* value, LOperand* map) {
+  DECLARE_CONCRETE_INSTRUCTION(ValueOf, "value-of")
+  DECLARE_HYDROGEN_ACCESSOR(ValueOf)
+};
+
+
+class LCheckMapValue: public LTemplateInstruction<0, 2, 1> {
+ public:
+  LCheckMapValue(LOperand* value, LOperand* map, LOperand* temp) {
     inputs_[0] = value;
     inputs_[1] = map;
+    temps_[0] = temp;
   }
 
   LOperand* value() { return inputs_[0]; }
   LOperand* map() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(CheckMapValue, "check-map-value")
 };
 
 
 class LLoadFieldByIndex: public LTemplateInstruction<1, 2, 0> {
  public:
   LLoadFieldByIndex(LOperand* object, LOperand* index) {
     inputs_[0] = object;
     inputs_[1] = index;
   }
 
   LOperand* object() { return inputs_[0]; }
   LOperand* index() { return inputs_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(LoadFieldByIndex, "load-field-by-index")
 };
 
 
+class LWrapReceiver: public LTemplateInstruction<1, 2, 1> {
+ public:
+  LWrapReceiver(LOperand* receiver, LOperand* function, LOperand* temp) {
+    inputs_[0] = receiver;
+    inputs_[1] = function;
+    temps_[0] = temp;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(WrapReceiver, "wrap-receiver")
+
+  LOperand* receiver() { return inputs_[0]; }
+  LOperand* function() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+};
+
+
 class LChunkBuilder;
 class LPlatformChunk: public LChunk {
  public:
   LPlatformChunk(CompilationInfo* info, HGraph* graph)
       : LChunk(info, graph) { }
 
-  int GetNextSpillIndex(bool is_double);
+  int GetNextSpillIndex();
   LOperand* GetNextSpillSlot(bool is_double);
 };
 
 
 class LChunkBuilder BASE_EMBEDDED {
  public:
   LChunkBuilder(CompilationInfo* info, HGraph* graph, LAllocator* allocator)
       : chunk_(NULL),
         info_(info),
         graph_(graph),
         zone_(graph->zone()),
         status_(UNUSED),
         current_instruction_(NULL),
         current_block_(NULL),
-        next_block_(NULL),
         argument_count_(0),
         allocator_(allocator),
         position_(RelocInfo::kNoPosition),
         instruction_pending_deoptimization_environment_(NULL),
         pending_deoptimization_ast_id_(BailoutId::None()) { }
 
   // Build the sequence for the graph.
   LPlatformChunk* Build();
 
   // Declare methods that deal with the individual node types.
 #define DECLARE_DO(type) LInstruction* Do##type(H##type* node);
   HYDROGEN_CONCRETE_INSTRUCTION_LIST(DECLARE_DO)
 #undef DECLARE_DO
 
-  LInstruction* DoMultiplyAdd(HMul* mul, HValue* addend);
-
-  LInstruction* DoMathFloor(HUnaryMathOperation* instr);
-  LInstruction* DoMathRound(HUnaryMathOperation* instr);
-  LInstruction* DoMathAbs(HUnaryMathOperation* instr);
-  LInstruction* DoMathLog(HUnaryMathOperation* instr);
-  LInstruction* DoMathSin(HUnaryMathOperation* instr);
-  LInstruction* DoMathCos(HUnaryMathOperation* instr);
-  LInstruction* DoMathTan(HUnaryMathOperation* instr);
-  LInstruction* DoMathExp(HUnaryMathOperation* instr);
-  LInstruction* DoMathSqrt(HUnaryMathOperation* instr);
-  LInstruction* DoMathPowHalf(HUnaryMathOperation* instr);
+  static bool HasMagicNumberForDivision(int32_t divisor);
+  static HValue* SimplifiedDividendForMathFloorOfDiv(HValue* val);
+  static HValue* SimplifiedDivisorForMathFloorOfDiv(HValue* val);
 
  private:
   enum Status {
     UNUSED,
     BUILDING,
     DONE,
     ABORTED
   };
 
-  LPlatformChunk* chunk() const { return chunk_; }
-  CompilationInfo* info() const { return info_; }
   HGraph* graph() const { return graph_; }
-  Zone* zone() const { return zone_; }
+  Isolate* isolate() const { return info_->isolate(); }
 
   bool is_unused() const { return status_ == UNUSED; }
   bool is_building() const { return status_ == BUILDING; }
   bool is_done() const { return status_ == DONE; }
   bool is_aborted() const { return status_ == ABORTED; }
 
+  Zone* zone() const { return zone_; }
+  int argument_count() const { return argument_count_; }
+  CompilationInfo* info() const { return info_; }
+  Heap* heap() const { return isolate()->heap(); }
+
   void Abort(const char* reason);
 
   // Methods for getting operands for Use / Define / Temp.
   LUnallocated* ToUnallocated(Register reg);
   LUnallocated* ToUnallocated(DoubleRegister reg);
 
   // Methods for setting up define-use relationships.
   MUST_USE_RESULT LOperand* Use(HValue* value, LUnallocated* operand);
   MUST_USE_RESULT LOperand* UseFixed(HValue* value, Register fixed_register);
   MUST_USE_RESULT LOperand* UseFixedDouble(HValue* value,
                                            DoubleRegister fixed_register);
 
   // A value that is guaranteed to be allocated to a register.
-  // Operand created by UseRegister is guaranteed to be live until the end of
-  // instruction. This means that register allocator will not reuse it's
+  // The operand created by UseRegister is guaranteed to be live until the end
+  // of the instruction. This means that register allocator will not reuse its
   // register for any other operand inside instruction.
-  // Operand created by UseRegisterAtStart is guaranteed to be live only at
-  // instruction start. Register allocator is free to assign the same register
-  // to some other operand used inside instruction (i.e. temporary or
+  MUST_USE_RESULT LOperand* UseRegister(HValue* value);
+
+  // The operand created by UseRegisterAndClobber is guaranteed to be live until
+  // the end of the end of the instruction, and it may also be used as a scratch
+  // register by the instruction implementation.
+  //
+  // This behaves identically to ARM's UseTempRegister. However, it is renamed
+  // to discourage its use in A64, since in most cases it is better to allocate
+  // a temporary register for the Lithium instruction.
+  MUST_USE_RESULT LOperand* UseRegisterAndClobber(HValue* value);
+
+  // The operand created by UseRegisterAtStart is guaranteed to be live only at
+  // instruction start. The register allocator is free to assign the same
+  // register to some other operand used inside instruction (i.e. temporary or
   // output).
-  MUST_USE_RESULT LOperand* UseRegister(HValue* value);
   MUST_USE_RESULT LOperand* UseRegisterAtStart(HValue* value);
 
-  // An input operand in a register that may be trashed.
-  MUST_USE_RESULT LOperand* UseTempRegister(HValue* value);
-
-  // An input operand in a register or stack slot.
-  MUST_USE_RESULT LOperand* Use(HValue* value);
-  MUST_USE_RESULT LOperand* UseAtStart(HValue* value);
-
-  // An input operand in a register, stack slot or a constant operand.
-  MUST_USE_RESULT LOperand* UseOrConstant(HValue* value);
-  MUST_USE_RESULT LOperand* UseOrConstantAtStart(HValue* value);
-
   // An input operand in a register or a constant operand.
   MUST_USE_RESULT LOperand* UseRegisterOrConstant(HValue* value);
   MUST_USE_RESULT LOperand* UseRegisterOrConstantAtStart(HValue* value);
 
-  // An input operand in a constant operand.
-  MUST_USE_RESULT LOperand* UseConstant(HValue* value);
+  // A constant operand.
+  MUST_USE_RESULT LConstantOperand* UseConstant(HValue* value);
 
   // An input operand in register, stack slot or a constant operand.
   // Will not be moved to a register even if one is freely available.
   MUST_USE_RESULT LOperand* UseAny(HValue* value);
 
   // Temporary operand that must be in a register.
   MUST_USE_RESULT LUnallocated* TempRegister();
-  MUST_USE_RESULT LOperand* FixedTemp(Register reg);
+
+  // Temporary operand that must be in a fixed double register.
   MUST_USE_RESULT LOperand* FixedTemp(DoubleRegister reg);
 
   // Methods for setting up define-use relationships.
   // Return the same instruction that they are passed.
   template<int I, int T>
       LInstruction* Define(LTemplateInstruction<1, I, T>* instr,
                            LUnallocated* result);
   template<int I, int T>
       LInstruction* DefineAsRegister(LTemplateInstruction<1, I, T>* instr);
+
   template<int I, int T>
       LInstruction* DefineAsSpilled(LTemplateInstruction<1, I, T>* instr,
                                     int index);
+
   template<int I, int T>
       LInstruction* DefineSameAsFirst(LTemplateInstruction<1, I, T>* instr);
+
   template<int I, int T>
       LInstruction* DefineFixed(LTemplateInstruction<1, I, T>* instr,
                                 Register reg);
   template<int I, int T>
       LInstruction* DefineFixedDouble(LTemplateInstruction<1, I, T>* instr,
                                       DoubleRegister reg);
-  LInstruction* AssignEnvironment(LInstruction* instr);
-  LInstruction* AssignPointerMap(LInstruction* instr);
 
   enum CanDeoptimize { CAN_DEOPTIMIZE_EAGERLY, CANNOT_DEOPTIMIZE_EAGERLY };
 
   // By default we assume that instruction sequences generated for calls
   // cannot deoptimize eagerly and we do not attach environment to this
   // instruction.
   LInstruction* MarkAsCall(
       LInstruction* instr,
       HInstruction* hinstr,
       CanDeoptimize can_deoptimize = CANNOT_DEOPTIMIZE_EAGERLY);
 
+  LInstruction* AssignPointerMap(LInstruction* instr);
+  LInstruction* AssignEnvironment(LInstruction* instr);
   LEnvironment* CreateEnvironment(HEnvironment* hydrogen_env,
                                   int* argument_index_accumulator);
 
   void VisitInstruction(HInstruction* current);
+  void DoBasicBlock(HBasicBlock* block);
 
-  void DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block);
-  LInstruction* DoBit(Token::Value op, HBitwiseBinaryOperation* instr);
   LInstruction* DoShift(Token::Value op, HBitwiseBinaryOperation* instr);
   LInstruction* DoArithmeticD(Token::Value op,
                               HArithmeticBinaryOperation* instr);
   LInstruction* DoArithmeticT(Token::Value op,
-                              HArithmeticBinaryOperation* instr);
+                              HBinaryOperation* instr);
 
   LPlatformChunk* chunk_;
   CompilationInfo* info_;
   HGraph* const graph_;
   Zone* zone_;
   Status status_;
   HInstruction* current_instruction_;
   HBasicBlock* current_block_;
-  HBasicBlock* next_block_;
   int argument_count_;
   LAllocator* allocator_;
   int position_;
   LInstruction* instruction_pending_deoptimization_environment_;
   BailoutId pending_deoptimization_ast_id_;
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
-#endif  // V8_MIPS_LITHIUM_MIPS_H_
+#endif  // V8_A64_LITHIUM_A64_H_