1 files changed, 360 insertions, 245 deletions

diff --git a/src/3rdparty/v8/src/x64/lithium-x64.h b/src/3rdparty/v8/src/x64/lithium-x64.h
index ac1a5db..a437a2b 100644
--- a/src/3rdparty/v8/src/x64/lithium-x64.h
+++ b/src/3rdparty/v8/src/x64/lithium-x64.h
@@ -96,6 +96,7 @@ class LCodeGen;
   V(ElementsKind)                               \
   V(FastLiteral)                                \
   V(FixedArrayBaseLength)                       \
+  V(MapEnumLength)                              \
   V(FunctionLiteral)                            \
   V(GetCachedArrayIndex)                        \
   V(GlobalObject)                               \
@@ -108,6 +109,7 @@ class LCodeGen;
   V(InstanceOfKnownGlobal)                      \
   V(InstructionGap)                             \
   V(Integer32ToDouble)                          \
+  V(Uint32ToDouble)                             \
   V(InvokeFunction)                             \
   V(IsConstructCallAndBranch)                   \
   V(IsNilAndBranch)                             \
@@ -115,7 +117,6 @@ class LCodeGen;
   V(IsStringAndBranch)                          \
   V(IsSmiAndBranch)                             \
   V(IsUndetectableAndBranch)                    \
-  V(StringCompareAndBranch)                     \
   V(JSArrayLength)                              \
   V(Label)                                      \
   V(LazyBailout)                                \
@@ -125,17 +126,18 @@ class LCodeGen;
   V(LoadFunctionPrototype)                      \
   V(LoadGlobalCell)                             \
   V(LoadGlobalGeneric)                          \
-  V(LoadKeyedFastDoubleElement)                 \
-  V(LoadKeyedFastElement)                       \
+  V(LoadKeyed)                                  \
   V(LoadKeyedGeneric)                           \
-  V(LoadKeyedSpecializedArrayElement)           \
   V(LoadNamedField)                             \
   V(LoadNamedFieldPolymorphic)                  \
   V(LoadNamedGeneric)                           \
+  V(MathFloorOfDiv)                             \
+  V(MathMinMax)                                 \
   V(ModI)                                       \
   V(MulI)                                       \
   V(NumberTagD)                                 \
   V(NumberTagI)                                 \
+  V(NumberTagU)                                 \
   V(NumberUntagD)                               \
   V(ObjectLiteral)                              \
   V(OsrEntry)                                   \
@@ -153,15 +155,14 @@ class LCodeGen;
   V(StoreContextSlot)                           \
   V(StoreGlobalCell)                            \
   V(StoreGlobalGeneric)                         \
-  V(StoreKeyedFastDoubleElement)                \
-  V(StoreKeyedFastElement)                      \
+  V(StoreKeyed)                                 \
   V(StoreKeyedGeneric)                          \
-  V(StoreKeyedSpecializedArrayElement)          \
   V(StoreNamedField)                            \
   V(StoreNamedGeneric)                          \
   V(StringAdd)                                  \
   V(StringCharCodeAt)                           \
   V(StringCharFromCode)                         \
+  V(StringCompareAndBranch)                     \
   V(StringLength)                               \
   V(SubI)                                       \
   V(TaggedToI)                                  \
@@ -257,11 +258,6 @@ class LInstruction: public ZoneObject {
   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; }
 
@@ -270,6 +266,15 @@ class LInstruction: public ZoneObject {
 #endif
 
  private:
+  // Iterator support.
+  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_;
@@ -289,16 +294,18 @@ class LTemplateInstruction: public LInstruction {
   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:
+  // Iterator support.
+  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]; }
 };
 
 
@@ -333,8 +340,11 @@ class LGap: public LTemplateInstruction<0, 0, 0> {
     LAST_INNER_POSITION = AFTER
   };
 
-  LParallelMove* GetOrCreateParallelMove(InnerPosition pos)  {
-    if (parallel_moves_[pos] == NULL) parallel_moves_[pos] = new LParallelMove;
+  LParallelMove* GetOrCreateParallelMove(InnerPosition pos,
+                                         Zone* zone)  {
+    if (parallel_moves_[pos] == NULL) {
+      parallel_moves_[pos] = new(zone) LParallelMove(zone);
+    }
     return parallel_moves_[pos];
   }
 
@@ -462,10 +472,10 @@ class LWrapReceiver: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = function;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(WrapReceiver, "wrap-receiver")
-
   LOperand* receiver() { return inputs_[0]; }
   LOperand* function() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(WrapReceiver, "wrap-receiver")
 };
 
 
@@ -481,12 +491,12 @@ class LApplyArguments: public LTemplateInstruction<1, 4, 0> {
     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]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ApplyArguments, "apply-arguments")
 };
 
 
@@ -498,12 +508,12 @@ class LAccessArgumentsAt: public LTemplateInstruction<1, 3, 0> {
     inputs_[2] = index;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(AccessArgumentsAt, "access-arguments-at")
-
   LOperand* arguments() { return inputs_[0]; }
   LOperand* length() { return inputs_[1]; }
   LOperand* index() { return inputs_[2]; }
 
+  DECLARE_CONCRETE_INSTRUCTION(AccessArgumentsAt, "access-arguments-at")
+
   virtual void PrintDataTo(StringStream* stream);
 };
 
@@ -514,6 +524,8 @@ class LArgumentsLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = elements;
   }
 
+  LOperand* elements() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ArgumentsLength, "arguments-length")
 };
 
@@ -533,6 +545,10 @@ class LModI: public LTemplateInstruction<1, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ModI, "mod-i")
   DECLARE_HYDROGEN_ACCESSOR(Mod)
 };
@@ -546,11 +562,34 @@ class LDivI: public LTemplateInstruction<1, 2, 1> {
     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 LMathFloorOfDiv: public LTemplateInstruction<1, 2, 1> {
+ public:
+  LMathFloorOfDiv(LOperand* left,
+                  LOperand* right,
+                  LOperand* temp = NULL) {
+    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(MathFloorOfDiv, "math-floor-of-div")
+  DECLARE_HYDROGEN_ACCESSOR(MathFloorOfDiv)
+};
+
+
 class LMulI: public LTemplateInstruction<1, 2, 0> {
  public:
   LMulI(LOperand* left, LOperand* right) {
@@ -558,6 +597,9 @@ class LMulI: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(MulI, "mul-i")
   DECLARE_HYDROGEN_ACCESSOR(Mul)
 };
@@ -570,6 +612,9 @@ class LCmpIDAndBranch: public LControlInstruction<2, 0> {
     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)
 
@@ -588,6 +633,8 @@ class LUnaryMathOperation: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(UnaryMathOperation, "unary-math-operation")
   DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
 
@@ -603,6 +650,9 @@ class LCmpObjectEqAndBranch: public LControlInstruction<2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpObjectEqAndBranch,
                                "cmp-object-eq-and-branch")
 };
@@ -614,6 +664,8 @@ class LCmpConstantEqAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = left;
   }
 
+  LOperand* left() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpConstantEqAndBranch,
                                "cmp-constant-eq-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(CompareConstantEqAndBranch)
@@ -627,6 +679,9 @@ class LIsNilAndBranch: public LControlInstruction<1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsNilAndBranch, "is-nil-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(IsNilAndBranch)
 
@@ -643,6 +698,8 @@ class LIsObjectAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsObjectAndBranch, "is-object-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(IsObjectAndBranch)
 
@@ -657,6 +714,9 @@ class LIsStringAndBranch: public LControlInstruction<1, 1> {
     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)
 
@@ -670,6 +730,8 @@ class LIsSmiAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsSmiAndBranch, "is-smi-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(IsSmiAndBranch)
 
@@ -684,6 +746,9 @@ class LIsUndetectableAndBranch: public LControlInstruction<1, 1> {
     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)
@@ -699,6 +764,9 @@ class LStringCompareAndBranch: public LControlInstruction<2, 0> {
     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)
@@ -715,6 +783,8 @@ class LHasInstanceTypeAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(HasInstanceTypeAndBranch,
                                "has-instance-type-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(HasInstanceTypeAndBranch)
@@ -729,6 +799,8 @@ class LGetCachedArrayIndex: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(GetCachedArrayIndex, "get-cached-array-index")
   DECLARE_HYDROGEN_ACCESSOR(GetCachedArrayIndex)
 };
@@ -740,6 +812,8 @@ class LHasCachedArrayIndexAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(HasCachedArrayIndexAndBranch,
                                "has-cached-array-index-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(HasCachedArrayIndexAndBranch)
@@ -756,6 +830,10 @@ class LClassOfTestAndBranch: public LControlInstruction<1, 2> {
     temps_[1] = temp2;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+  LOperand* temp2() { return temps_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ClassOfTestAndBranch,
                                "class-of-test-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(ClassOfTestAndBranch)
@@ -771,6 +849,9 @@ class LCmpT: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
   DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
 
@@ -799,6 +880,9 @@ class LInstanceOf: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(InstanceOf, "instance-of")
 };
 
@@ -810,6 +894,9 @@ class LInstanceOfKnownGlobal: public LTemplateInstruction<1, 1, 1> {
     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)
@@ -838,6 +925,7 @@ class LBoundsCheck: public LTemplateInstruction<0, 2, 0> {
   LOperand* length() { return inputs_[1]; }
 
   DECLARE_CONCRETE_INSTRUCTION(BoundsCheck, "bounds-check")
+  DECLARE_HYDROGEN_ACCESSOR(BoundsCheck)
 };
 
 
@@ -848,6 +936,9 @@ class LBitI: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   Token::Value op() const { return hydrogen()->op(); }
 
   DECLARE_CONCRETE_INSTRUCTION(BitI, "bit-i")
@@ -864,7 +955,8 @@ class LShiftI: public LTemplateInstruction<1, 2, 0> {
   }
 
   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")
@@ -882,6 +974,9 @@ class LSubI: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(SubI, "sub-i")
   DECLARE_HYDROGEN_ACCESSOR(Sub)
 };
@@ -901,6 +996,9 @@ class LConstantD: public LTemplateInstruction<1, 0, 1> {
   explicit LConstantD(LOperand* temp) {
     temps_[0] = temp;
   }
+
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ConstantD, "constant-d")
   DECLARE_HYDROGEN_ACCESSOR(Constant)
 
@@ -923,6 +1021,8 @@ class LBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Branch, "branch")
   DECLARE_HYDROGEN_ACCESSOR(Branch)
 
@@ -936,6 +1036,8 @@ class LCmpMapAndBranch: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CmpMapAndBranch, "cmp-map-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(CompareMap)
 
@@ -957,6 +1059,8 @@ class LJSArrayLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(JSArrayLength, "js-array-length")
   DECLARE_HYDROGEN_ACCESSOR(JSArrayLength)
 };
@@ -968,18 +1072,34 @@ class LFixedArrayBaseLength: public LTemplateInstruction<1, 1, 0> {
     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)
 };
@@ -991,6 +1111,8 @@ class LValueOf: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ValueOf, "value-of")
   DECLARE_HYDROGEN_ACCESSOR(ValueOf)
 };
@@ -1002,11 +1124,12 @@ class LDateField: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = date;
   }
 
+  LOperand* date() { return inputs_[0]; }
+  Smi* index() const { return index_; }
+
   DECLARE_CONCRETE_INSTRUCTION(ValueOf, "date-field")
   DECLARE_HYDROGEN_ACCESSOR(ValueOf)
 
-  Smi* index() const { return index_; }
-
  private:
   Smi* index_;
 };
@@ -1018,6 +1141,8 @@ class LThrow: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Throw, "throw")
 };
 
@@ -1028,6 +1153,8 @@ class LBitNotI: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(BitNotI, "bit-not-i")
 };
 
@@ -1039,11 +1166,29 @@ class LAddI: public LTemplateInstruction<1, 2, 0> {
     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, "min-max")
+  DECLARE_HYDROGEN_ACCESSOR(MathMinMax)
+};
+
+
 class LPower: public LTemplateInstruction<1, 2, 0> {
  public:
   LPower(LOperand* left, LOperand* right) {
@@ -1051,6 +1196,9 @@ class LPower: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Power, "power")
   DECLARE_HYDROGEN_ACCESSOR(Power)
 };
@@ -1062,6 +1210,8 @@ class LRandom: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = global_object;
   }
 
+  LOperand* global_object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Random, "random")
   DECLARE_HYDROGEN_ACCESSOR(Random)
 };
@@ -1076,6 +1226,8 @@ class LArithmeticD: public LTemplateInstruction<1, 2, 0> {
   }
 
   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);
@@ -1094,12 +1246,14 @@ class LArithmeticT: public LTemplateInstruction<1, 2, 0> {
     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::kArithmeticT; }
   virtual void CompileToNative(LCodeGen* generator);
   virtual const char* Mnemonic() const;
 
-  Token::Value op() const { return op_; }
-
  private:
   Token::Value op_;
 };
@@ -1111,6 +1265,8 @@ class LReturn: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Return, "return")
 };
 
@@ -1121,6 +1277,8 @@ class LLoadNamedField: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = object;
   }
 
+  LOperand* object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field")
   DECLARE_HYDROGEN_ACCESSOR(LoadNamedField)
 };
@@ -1172,6 +1330,8 @@ class LLoadElements: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = object;
   }
 
+  LOperand* object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadElements, "load-elements")
 };
 
@@ -1182,64 +1342,43 @@ class LLoadExternalArrayPointer: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = object;
   }
 
+  LOperand* object() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadExternalArrayPointer,
                                "load-external-array-pointer")
 };
 
 
-class LLoadKeyedFastElement: public LTemplateInstruction<1, 2, 0> {
+class LLoadKeyed: public LTemplateInstruction<1, 2, 0> {
  public:
-  LLoadKeyedFastElement(LOperand* elements, LOperand* key) {
+  LLoadKeyed(LOperand* elements, LOperand* key) {
     inputs_[0] = elements;
     inputs_[1] = key;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedFastElement, "load-keyed-fast-element")
-  DECLARE_HYDROGEN_ACCESSOR(LoadKeyedFastElement)
-
-  LOperand* elements() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  uint32_t additional_index() const { return hydrogen()->index_offset(); }
-};
-
+  DECLARE_CONCRETE_INSTRUCTION(LoadKeyed, "load-keyed")
+  DECLARE_HYDROGEN_ACCESSOR(LoadKeyed)
 
-class LLoadKeyedFastDoubleElement: public LTemplateInstruction<1, 2, 0> {
- public:
-  LLoadKeyedFastDoubleElement(LOperand* elements, LOperand* key) {
-    inputs_[0] = elements;
-    inputs_[1] = key;
+  bool is_external() const {
+    return hydrogen()->is_external();
   }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedFastDoubleElement,
-                               "load-keyed-fast-double-element")
-  DECLARE_HYDROGEN_ACCESSOR(LoadKeyedFastDoubleElement)
-
   LOperand* elements() { return inputs_[0]; }
   LOperand* key() { return inputs_[1]; }
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
-};
-
-
-class LLoadKeyedSpecializedArrayElement: public LTemplateInstruction<1, 2, 0> {
- public:
-  LLoadKeyedSpecializedArrayElement(LOperand* external_pointer, LOperand* key) {
-    inputs_[0] = external_pointer;
-    inputs_[1] = key;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedSpecializedArrayElement,
-                               "load-keyed-specialized-array-element")
-  DECLARE_HYDROGEN_ACCESSOR(LoadKeyedSpecializedArrayElement)
-
-  LOperand* external_pointer() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
   ElementsKind elements_kind() const {
     return hydrogen()->elements_kind();
   }
-  uint32_t additional_index() const { return hydrogen()->index_offset(); }
 };
 
 
+template <class T>
+inline static bool ArrayOpClobbersKey(T *value) {
+  CHECK(value->IsLoadKeyed() || value->IsStoreKeyed());
+  return !value->IsConstant() && (value->key()->representation().IsTagged()
+                                  || value->IsDehoisted());
+}
+
+
 class LLoadKeyedGeneric: public LTemplateInstruction<1, 2, 0> {
  public:
   LLoadKeyedGeneric(LOperand* obj, LOperand* key) {
@@ -1283,10 +1422,11 @@ class LStoreGlobalCell: public LTemplateInstruction<0, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreGlobalCell, "store-global-cell")
   DECLARE_HYDROGEN_ACCESSOR(StoreGlobalCell)
-
-  LOperand* value() { return inputs_[0]; }
 };
 
 
@@ -1298,12 +1438,13 @@ class LStoreGlobalGeneric: public LTemplateInstruction<0, 2, 0> {
     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)
 
-  LOperand* global_object() { return InputAt(0); }
   Handle<Object> name() const { return hydrogen()->name(); }
-  LOperand* value() { return InputAt(1); }
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
@@ -1314,10 +1455,11 @@ class LLoadContextSlot: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
+  LOperand* context() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(LoadContextSlot, "load-context-slot")
   DECLARE_HYDROGEN_ACCESSOR(LoadContextSlot)
 
-  LOperand* context() { return InputAt(0); }
   int slot_index() { return hydrogen()->slot_index(); }
 
   virtual void PrintDataTo(StringStream* stream);
@@ -1332,11 +1474,13 @@ class LStoreContextSlot: public LTemplateInstruction<0, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* context() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreContextSlot, "store-context-slot")
   DECLARE_HYDROGEN_ACCESSOR(StoreContextSlot)
 
-  LOperand* context() { return InputAt(0); }
-  LOperand* value() { return InputAt(1); }
   int slot_index() { return hydrogen()->slot_index(); }
 
   virtual void PrintDataTo(StringStream* stream);
@@ -1349,6 +1493,8 @@ class LPushArgument: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(PushArgument, "push-argument")
 };
 
@@ -1385,9 +1531,9 @@ class LOuterContext: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = context;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(OuterContext, "outer-context")
+  LOperand* context() { return inputs_[0]; }
 
-  LOperand* context() { return InputAt(0); }
+  DECLARE_CONCRETE_INSTRUCTION(OuterContext, "outer-context")
 };
 
 
@@ -1416,9 +1562,9 @@ class LGlobalReceiver: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = global_object;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(GlobalReceiver, "global-receiver")
+  LOperand* global() { return inputs_[0]; }
 
-  LOperand* global() { return InputAt(0); }
+  DECLARE_CONCRETE_INSTRUCTION(GlobalReceiver, "global-receiver")
 };
 
 
@@ -1440,11 +1586,11 @@ class LInvokeFunction: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = function;
   }
 
+  LOperand* function() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(InvokeFunction, "invoke-function")
   DECLARE_HYDROGEN_ACCESSOR(InvokeFunction)
 
-  LOperand* function() { return inputs_[0]; }
-
   virtual void PrintDataTo(StringStream* stream);
 
   int arity() const { return hydrogen()->argument_count() - 1; }
@@ -1531,6 +1677,8 @@ class LCallNew: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = constructor;
   }
 
+  LOperand* constructor() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CallNew, "call-new")
   DECLARE_HYDROGEN_ACCESSOR(CallNew)
 
@@ -1556,20 +1704,52 @@ class LInteger32ToDouble: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Integer32ToDouble, "int32-to-double")
 };
 
 
+class LUint32ToDouble: public LTemplateInstruction<1, 1, 1> {
+ public:
+  explicit LUint32ToDouble(LOperand* value, LOperand* temp) {
+    inputs_[0] = value;
+    temps_[0] = temp;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[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, 1> {
+ public:
+  explicit LNumberTagU(LOperand* value, LOperand* temp) {
+    inputs_[0] = value;
+    temps_[0] = temp;
+  }
+
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(NumberTagU, "number-tag-u")
+};
+
+
 class LNumberTagD: public LTemplateInstruction<1, 1, 1> {
  public:
   explicit LNumberTagD(LOperand* value, LOperand* temp) {
@@ -1577,6 +1757,9 @@ class LNumberTagD: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(NumberTagD, "number-tag-d")
 };
 
@@ -1588,6 +1771,8 @@ class LDoubleToI: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(DoubleToI, "double-to-i")
   DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
 
@@ -1603,6 +1788,9 @@ class LTaggedToI: public LTemplateInstruction<1, 1, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* value() { return inputs_[0]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(TaggedToI, "tagged-to-i")
   DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
 
@@ -1616,6 +1804,8 @@ class LSmiTag: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(SmiTag, "smi-tag")
 };
 
@@ -1626,6 +1816,8 @@ class LNumberUntagD: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(NumberUntagD, "double-untag")
   DECLARE_HYDROGEN_ACCESSOR(Change);
 };
@@ -1638,10 +1830,11 @@ class LSmiUntag: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(SmiUntag, "smi-untag")
-
+  LOperand* value() { return inputs_[0]; }
   bool needs_check() const { return needs_check_; }
 
+  DECLARE_CONCRETE_INSTRUCTION(SmiUntag, "smi-untag")
+
  private:
   bool needs_check_;
 };
@@ -1655,14 +1848,15 @@ class LStoreNamedField: public LTemplateInstruction<0, 2, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* object() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreNamedField, "store-named-field")
   DECLARE_HYDROGEN_ACCESSOR(StoreNamedField)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* value() { return inputs_[1]; }
-
   Handle<Object> name() const { return hydrogen()->name(); }
   bool is_in_object() { return hydrogen()->is_in_object(); }
   int offset() { return hydrogen()->offset(); }
@@ -1677,88 +1871,42 @@ class LStoreNamedGeneric: public LTemplateInstruction<0, 2, 0> {
     inputs_[1] = value;
   }
 
+  LOperand* object() { return inputs_[0]; }
+  LOperand* value() { return inputs_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StoreNamedGeneric, "store-named-generic")
   DECLARE_HYDROGEN_ACCESSOR(StoreNamedGeneric)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* value() { return inputs_[1]; }
   Handle<Object> name() const { return hydrogen()->name(); }
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
 
-class LStoreKeyedFastElement: public LTemplateInstruction<0, 3, 0> {
+class LStoreKeyed: public LTemplateInstruction<0, 3, 0> {
  public:
-  LStoreKeyedFastElement(LOperand* obj, LOperand* key, LOperand* val) {
-    inputs_[0] = obj;
+  LStoreKeyed(LOperand* object, LOperand* key, LOperand* value) {
+    inputs_[0] = object;
     inputs_[1] = key;
-    inputs_[2] = val;
+    inputs_[2] = value;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(StoreKeyedFastElement,
-                               "store-keyed-fast-element")
-  DECLARE_HYDROGEN_ACCESSOR(StoreKeyedFastElement)
-
-  virtual void PrintDataTo(StringStream* stream);
-
-  LOperand* object() { return inputs_[0]; }
+  bool is_external() const { return hydrogen()->is_external(); }
+  LOperand* elements() { return inputs_[0]; }
   LOperand* key() { return inputs_[1]; }
   LOperand* value() { return inputs_[2]; }
-  uint32_t additional_index() const { return hydrogen()->index_offset(); }
-};
+  ElementsKind elements_kind() const { return hydrogen()->elements_kind(); }
 
-
-class LStoreKeyedFastDoubleElement: public LTemplateInstruction<0, 3, 0> {
- public:
-  LStoreKeyedFastDoubleElement(LOperand* elements,
-                               LOperand* key,
-                               LOperand* val) {
-    inputs_[0] = elements;
-    inputs_[1] = key;
-    inputs_[2] = val;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(StoreKeyedFastDoubleElement,
-                               "store-keyed-fast-double-element")
-  DECLARE_HYDROGEN_ACCESSOR(StoreKeyedFastDoubleElement)
+  DECLARE_CONCRETE_INSTRUCTION(StoreKeyed, "store-keyed")
+  DECLARE_HYDROGEN_ACCESSOR(StoreKeyed)
 
   virtual void PrintDataTo(StringStream* stream);
-
-  LOperand* elements() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
-
   bool NeedsCanonicalization() { return hydrogen()->NeedsCanonicalization(); }
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
 };
 
 
-class LStoreKeyedSpecializedArrayElement: public LTemplateInstruction<0, 3, 0> {
- public:
-  LStoreKeyedSpecializedArrayElement(LOperand* external_pointer,
-                                     LOperand* key,
-                                     LOperand* val) {
-    inputs_[0] = external_pointer;
-    inputs_[1] = key;
-    inputs_[2] = val;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(StoreKeyedSpecializedArrayElement,
-                               "store-keyed-specialized-array-element")
-  DECLARE_HYDROGEN_ACCESSOR(StoreKeyedSpecializedArrayElement)
-
-  LOperand* external_pointer() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
-  ElementsKind elements_kind() const {
-    return hydrogen()->elements_kind();
-  }
-  uint32_t additional_index() const { return hydrogen()->index_offset(); }
-};
-
-
 class LStoreKeyedGeneric: public LTemplateInstruction<0, 3, 0> {
  public:
   LStoreKeyedGeneric(LOperand* object, LOperand* key, LOperand* value) {
@@ -1767,14 +1915,15 @@ class LStoreKeyedGeneric: public LTemplateInstruction<0, 3, 0> {
     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);
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* key() { return inputs_[1]; }
-  LOperand* value() { return inputs_[2]; }
   StrictModeFlag strict_mode_flag() { return hydrogen()->strict_mode_flag(); }
 };
 
@@ -1783,21 +1932,22 @@ class LTransitionElementsKind: public LTemplateInstruction<1, 1, 2> {
  public:
   LTransitionElementsKind(LOperand* object,
                           LOperand* new_map_temp,
-                          LOperand* temp_reg) {
+                          LOperand* temp) {
     inputs_[0] = object;
     temps_[0] = new_map_temp;
-    temps_[1] = temp_reg;
+    temps_[1] = temp;
   }
 
+  LOperand* object() { return inputs_[0]; }
+  LOperand* new_map_temp() { return temps_[0]; }
+  LOperand* temp() { return temps_[1]; }
+
   DECLARE_CONCRETE_INSTRUCTION(TransitionElementsKind,
                                "transition-elements-kind")
   DECLARE_HYDROGEN_ACCESSOR(TransitionElementsKind)
 
   virtual void PrintDataTo(StringStream* stream);
 
-  LOperand* object() { return inputs_[0]; }
-  LOperand* new_map_reg() { return temps_[0]; }
-  LOperand* temp_reg() { return temps_[1]; }
   Handle<Map> original_map() { return hydrogen()->original_map(); }
   Handle<Map> transitioned_map() { return hydrogen()->transitioned_map(); }
 };
@@ -1810,11 +1960,11 @@ class LStringAdd: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = right;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(StringAdd, "string-add")
-  DECLARE_HYDROGEN_ACCESSOR(StringAdd)
-
   LOperand* left() { return inputs_[0]; }
   LOperand* right() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StringAdd, "string-add")
+  DECLARE_HYDROGEN_ACCESSOR(StringAdd)
 };
 
 
@@ -1825,11 +1975,11 @@ class LStringCharCodeAt: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = index;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(StringCharCodeAt, "string-char-code-at")
-  DECLARE_HYDROGEN_ACCESSOR(StringCharCodeAt)
-
   LOperand* string() { return inputs_[0]; }
   LOperand* index() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StringCharCodeAt, "string-char-code-at")
+  DECLARE_HYDROGEN_ACCESSOR(StringCharCodeAt)
 };
 
 
@@ -1839,10 +1989,10 @@ class LStringCharFromCode: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = char_code;
   }
 
+  LOperand* char_code() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StringCharFromCode, "string-char-from-code")
   DECLARE_HYDROGEN_ACCESSOR(StringCharFromCode)
-
-  LOperand* char_code() { return inputs_[0]; }
 };
 
 
@@ -1852,10 +2002,10 @@ class LStringLength: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = string;
   }
 
+  LOperand* string() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(StringLength, "string-length")
   DECLARE_HYDROGEN_ACCESSOR(StringLength)
-
-  LOperand* string() { return inputs_[0]; }
 };
 
 
@@ -1865,7 +2015,7 @@ class LCheckFunction: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
-  LOperand* value() { return InputAt(0); }
+  LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(CheckFunction, "check-function")
   DECLARE_HYDROGEN_ACCESSOR(CheckFunction)
@@ -1878,6 +2028,8 @@ class LCheckInstanceType: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckInstanceType, "check-instance-type")
   DECLARE_HYDROGEN_ACCESSOR(CheckInstanceType)
 };
@@ -1889,17 +2041,21 @@ class LCheckMaps: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckMaps, "check-maps")
   DECLARE_HYDROGEN_ACCESSOR(CheckMaps)
 };
 
 
-class LCheckPrototypeMaps: public LTemplateInstruction<0, 0, 1> {
+class LCheckPrototypeMaps: public LTemplateInstruction<1, 0, 1> {
  public:
   explicit LCheckPrototypeMaps(LOperand* temp)  {
     temps_[0] = temp;
   }
 
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckPrototypeMaps, "check-prototype-maps")
   DECLARE_HYDROGEN_ACCESSOR(CheckPrototypeMaps)
 
@@ -1914,15 +2070,16 @@ class LCheckSmi: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckSmi, "check-smi")
 };
 
 
-class LClampDToUint8: public LTemplateInstruction<1, 1, 1> {
+class LClampDToUint8: public LTemplateInstruction<1, 1, 0> {
  public:
-  LClampDToUint8(LOperand* value, LOperand* temp) {
-    inputs_[0] = value;
-    temps_[0] = temp;
+  explicit LClampDToUint8(LOperand* unclamped) {
+    inputs_[0] = unclamped;
   }
 
   LOperand* unclamped() { return inputs_[0]; }
@@ -1933,8 +2090,8 @@ class LClampDToUint8: public LTemplateInstruction<1, 1, 1> {
 
 class LClampIToUint8: public LTemplateInstruction<1, 1, 0> {
  public:
-  explicit LClampIToUint8(LOperand* value) {
-    inputs_[0] = value;
+  explicit LClampIToUint8(LOperand* unclamped) {
+    inputs_[0] = unclamped;
   }
 
   LOperand* unclamped() { return inputs_[0]; }
@@ -1943,17 +2100,16 @@ class LClampIToUint8: public LTemplateInstruction<1, 1, 0> {
 };
 
 
-class LClampTToUint8: public LTemplateInstruction<1, 1, 2> {
+class LClampTToUint8: public LTemplateInstruction<1, 1, 1> {
  public:
-  LClampTToUint8(LOperand* value,
-                 LOperand* temp,
-                 LOperand* temp2) {
-    inputs_[0] = value;
-    temps_[0] = temp;
-    temps_[1] = temp2;
+  LClampTToUint8(LOperand* unclamped,
+                 LOperand* temp_xmm) {
+    inputs_[0] = unclamped;
+    temps_[0] = temp_xmm;
   }
 
   LOperand* unclamped() { return inputs_[0]; }
+  LOperand* temp_xmm() { return temps_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ClampTToUint8, "clamp-t-to-uint8")
 };
@@ -1965,6 +2121,8 @@ class LCheckNonSmi: public LTemplateInstruction<0, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(CheckNonSmi, "check-non-smi")
 };
 
@@ -1975,6 +2133,8 @@ class LAllocateObject: public LTemplateInstruction<1, 0, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(AllocateObject, "allocate-object")
   DECLARE_HYDROGEN_ACCESSOR(AllocateObject)
 };
@@ -2023,6 +2183,8 @@ class LToFastProperties: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(ToFastProperties, "to-fast-properties")
   DECLARE_HYDROGEN_ACCESSOR(ToFastProperties)
 };
@@ -2034,6 +2196,8 @@ class LTypeof: public LTemplateInstruction<1, 1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(Typeof, "typeof")
 };
 
@@ -2044,6 +2208,8 @@ class LTypeofIsAndBranch: public LControlInstruction<1, 0> {
     inputs_[0] = value;
   }
 
+  LOperand* value() { return inputs_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(TypeofIsAndBranch, "typeof-is-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(TypeofIsAndBranch)
 
@@ -2059,6 +2225,8 @@ class LIsConstructCallAndBranch: public LControlInstruction<0, 1> {
     temps_[0] = temp;
   }
 
+  LOperand* temp() { return temps_[0]; }
+
   DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
                                "is-construct-call-and-branch")
   DECLARE_HYDROGEN_ACCESSOR(IsConstructCallAndBranch)
@@ -2072,10 +2240,10 @@ class LDeleteProperty: public LTemplateInstruction<1, 2, 0> {
     inputs_[1] = key;
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(DeleteProperty, "delete-property")
-
   LOperand* object() { return inputs_[0]; }
   LOperand* key() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(DeleteProperty, "delete-property")
 };
 
 
@@ -2171,69 +2339,13 @@ class LLoadFieldByIndex: public LTemplateInstruction<1, 2, 0> {
 
 
 class LChunkBuilder;
-class LChunk: public ZoneObject {
+class LPlatformChunk: public LChunk {
  public:
-  explicit LChunk(CompilationInfo* info, HGraph* graph)
-    : spill_slot_count_(0),
-      info_(info),
-      graph_(graph),
-      instructions_(32),
-      pointer_maps_(8),
-      inlined_closures_(1) { }
-
-  void AddInstruction(LInstruction* instruction, HBasicBlock* block);
-  LConstantOperand* DefineConstantOperand(HConstant* constant);
-  Handle<Object> LookupLiteral(LConstantOperand* operand) const;
-  Representation LookupLiteralRepresentation(LConstantOperand* operand) const;
+  LPlatformChunk(CompilationInfo* info, HGraph* graph)
+      : LChunk(info, graph) { }
 
   int GetNextSpillIndex(bool is_double);
   LOperand* GetNextSpillSlot(bool is_double);
-
-  int ParameterAt(int index);
-  int GetParameterStackSlot(int index) const;
-  int spill_slot_count() const { return spill_slot_count_; }
-  CompilationInfo* info() const { return info_; }
-  HGraph* graph() const { return graph_; }
-  const ZoneList<LInstruction*>* instructions() const { return &instructions_; }
-  void AddGapMove(int index, LOperand* from, LOperand* to);
-  LGap* GetGapAt(int index) const;
-  bool IsGapAt(int index) const;
-  int NearestGapPos(int index) const;
-  void MarkEmptyBlocks();
-  const ZoneList<LPointerMap*>* pointer_maps() const { return &pointer_maps_; }
-  LLabel* GetLabel(int block_id) const {
-    HBasicBlock* block = graph_->blocks()->at(block_id);
-    int first_instruction = block->first_instruction_index();
-    return LLabel::cast(instructions_[first_instruction]);
-  }
-  int LookupDestination(int block_id) const {
-    LLabel* cur = GetLabel(block_id);
-    while (cur->replacement() != NULL) {
-      cur = cur->replacement();
-    }
-    return cur->block_id();
-  }
-  Label* GetAssemblyLabel(int block_id) const {
-    LLabel* label = GetLabel(block_id);
-    ASSERT(!label->HasReplacement());
-    return label->label();
-  }
-
-  const ZoneList<Handle<JSFunction> >* inlined_closures() const {
-    return &inlined_closures_;
-  }
-
-  void AddInlinedClosure(Handle<JSFunction> closure) {
-    inlined_closures_.Add(closure);
-  }
-
- private:
-  int spill_slot_count_;
-  CompilationInfo* info_;
-  HGraph* const graph_;
-  ZoneList<LInstruction*> instructions_;
-  ZoneList<LPointerMap*> pointer_maps_;
-  ZoneList<Handle<JSFunction> > inlined_closures_;
 };
 
 
@@ -2243,7 +2355,7 @@ class LChunkBuilder BASE_EMBEDDED {
       : chunk_(NULL),
         info_(info),
         graph_(graph),
-        zone_(graph->isolate()->zone()),
+        zone_(graph->zone()),
         status_(UNUSED),
         current_instruction_(NULL),
         current_block_(NULL),
@@ -2252,16 +2364,19 @@ class LChunkBuilder BASE_EMBEDDED {
         allocator_(allocator),
         position_(RelocInfo::kNoPosition),
         instruction_pending_deoptimization_environment_(NULL),
-        pending_deoptimization_ast_id_(AstNode::kNoNumber) { }
+        pending_deoptimization_ast_id_(BailoutId::None()) { }
 
   // Build the sequence for the graph.
-  LChunk* Build();
+  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
 
+  static HValue* SimplifiedDividendForMathFloorOfDiv(HValue* val);
+  static HValue* SimplifiedDivisorForMathFloorOfDiv(HValue* val);
+
  private:
   enum Status {
     UNUSED,
@@ -2270,7 +2385,7 @@ class LChunkBuilder BASE_EMBEDDED {
     ABORTED
   };
 
-  LChunk* chunk() const { return chunk_; }
+  LPlatformChunk* chunk() const { return chunk_; }
   CompilationInfo* info() const { return info_; }
   HGraph* graph() const { return graph_; }
   Zone* zone() const { return zone_; }
@@ -2280,7 +2395,7 @@ class LChunkBuilder BASE_EMBEDDED {
   bool is_done() const { return status_ == DONE; }
   bool is_aborted() const { return status_ == ABORTED; }
 
-  void Abort(const char* format, ...);
+  void Abort(const char* reason);
 
   // Methods for getting operands for Use / Define / Temp.
   LUnallocated* ToUnallocated(Register reg);
@@ -2374,7 +2489,7 @@ class LChunkBuilder BASE_EMBEDDED {
   LInstruction* DoArithmeticT(Token::Value op,
                               HArithmeticBinaryOperation* instr);
 
-  LChunk* chunk_;
+  LPlatformChunk* chunk_;
   CompilationInfo* info_;
   HGraph* const graph_;
   Zone* zone_;
@@ -2386,7 +2501,7 @@ class LChunkBuilder BASE_EMBEDDED {
   LAllocator* allocator_;
   int position_;
   LInstruction* instruction_pending_deoptimization_environment_;
-  int pending_deoptimization_ast_id_;
+  BailoutId pending_deoptimization_ast_id_;
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };