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      1 // Copyright 2012 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef V8_X87_LITHIUM_X87_H_
      6 #define V8_X87_LITHIUM_X87_H_
      7 
      8 #include "src/hydrogen.h"
      9 #include "src/lithium.h"
     10 #include "src/lithium-allocator.h"
     11 #include "src/safepoint-table.h"
     12 #include "src/utils.h"
     13 
     14 namespace v8 {
     15 namespace internal {
     16 
     17 namespace compiler {
     18 class RCodeVisualizer;
     19 }
     20 
     21 // Forward declarations.
     22 class LCodeGen;
     23 
     24 #define LITHIUM_CONCRETE_INSTRUCTION_LIST(V) \
     25   V(AccessArgumentsAt)                       \
     26   V(AddI)                                    \
     27   V(AllocateBlockContext)                    \
     28   V(Allocate)                                \
     29   V(ApplyArguments)                          \
     30   V(ArgumentsElements)                       \
     31   V(ArgumentsLength)                         \
     32   V(ArithmeticD)                             \
     33   V(ArithmeticT)                             \
     34   V(BitI)                                    \
     35   V(BoundsCheck)                             \
     36   V(Branch)                                  \
     37   V(CallJSFunction)                          \
     38   V(CallWithDescriptor)                      \
     39   V(CallFunction)                            \
     40   V(CallNew)                                 \
     41   V(CallNewArray)                            \
     42   V(CallRuntime)                             \
     43   V(CallStub)                                \
     44   V(CheckInstanceType)                       \
     45   V(CheckMaps)                               \
     46   V(CheckMapValue)                           \
     47   V(CheckNonSmi)                             \
     48   V(CheckSmi)                                \
     49   V(CheckValue)                              \
     50   V(ClampDToUint8)                           \
     51   V(ClampIToUint8)                           \
     52   V(ClampTToUint8NoSSE2)                     \
     53   V(ClassOfTestAndBranch)                    \
     54   V(ClobberDoubles)                          \
     55   V(CompareMinusZeroAndBranch)               \
     56   V(CompareNumericAndBranch)                 \
     57   V(CmpObjectEqAndBranch)                    \
     58   V(CmpHoleAndBranch)                        \
     59   V(CmpMapAndBranch)                         \
     60   V(CmpT)                                    \
     61   V(ConstantD)                               \
     62   V(ConstantE)                               \
     63   V(ConstantI)                               \
     64   V(ConstantS)                               \
     65   V(ConstantT)                               \
     66   V(ConstructDouble)                         \
     67   V(Context)                                 \
     68   V(DateField)                               \
     69   V(DebugBreak)                              \
     70   V(DeclareGlobals)                          \
     71   V(Deoptimize)                              \
     72   V(DivByConstI)                             \
     73   V(DivByPowerOf2I)                          \
     74   V(DivI)                                    \
     75   V(DoubleBits)                              \
     76   V(DoubleToI)                               \
     77   V(DoubleToSmi)                             \
     78   V(Drop)                                    \
     79   V(Dummy)                                   \
     80   V(DummyUse)                                \
     81   V(FlooringDivByConstI)                     \
     82   V(FlooringDivByPowerOf2I)                  \
     83   V(FlooringDivI)                            \
     84   V(ForInCacheArray)                         \
     85   V(ForInPrepareMap)                         \
     86   V(FunctionLiteral)                         \
     87   V(GetCachedArrayIndex)                     \
     88   V(Goto)                                    \
     89   V(HasCachedArrayIndexAndBranch)            \
     90   V(HasInstanceTypeAndBranch)                \
     91   V(InnerAllocatedObject)                    \
     92   V(InstanceOf)                              \
     93   V(InstanceOfKnownGlobal)                   \
     94   V(InstructionGap)                          \
     95   V(Integer32ToDouble)                       \
     96   V(InvokeFunction)                          \
     97   V(IsConstructCallAndBranch)                \
     98   V(IsObjectAndBranch)                       \
     99   V(IsStringAndBranch)                       \
    100   V(IsSmiAndBranch)                          \
    101   V(IsUndetectableAndBranch)                 \
    102   V(Label)                                   \
    103   V(LazyBailout)                             \
    104   V(LoadContextSlot)                         \
    105   V(LoadFieldByIndex)                        \
    106   V(LoadFunctionPrototype)                   \
    107   V(LoadGlobalCell)                          \
    108   V(LoadGlobalGeneric)                       \
    109   V(LoadKeyed)                               \
    110   V(LoadKeyedGeneric)                        \
    111   V(LoadNamedField)                          \
    112   V(LoadNamedGeneric)                        \
    113   V(LoadRoot)                                \
    114   V(MapEnumLength)                           \
    115   V(MathAbs)                                 \
    116   V(MathClz32)                               \
    117   V(MathExp)                                 \
    118   V(MathFloor)                               \
    119   V(MathFround)                              \
    120   V(MathLog)                                 \
    121   V(MathMinMax)                              \
    122   V(MathPowHalf)                             \
    123   V(MathRound)                               \
    124   V(MathSqrt)                                \
    125   V(ModByConstI)                             \
    126   V(ModByPowerOf2I)                          \
    127   V(ModI)                                    \
    128   V(MulI)                                    \
    129   V(NumberTagD)                              \
    130   V(NumberTagI)                              \
    131   V(NumberTagU)                              \
    132   V(NumberUntagD)                            \
    133   V(OsrEntry)                                \
    134   V(Parameter)                               \
    135   V(Power)                                   \
    136   V(PushArgument)                            \
    137   V(RegExpLiteral)                           \
    138   V(Return)                                  \
    139   V(SeqStringGetChar)                        \
    140   V(SeqStringSetChar)                        \
    141   V(ShiftI)                                  \
    142   V(SmiTag)                                  \
    143   V(SmiUntag)                                \
    144   V(StackCheck)                              \
    145   V(StoreCodeEntry)                          \
    146   V(StoreContextSlot)                        \
    147   V(StoreFrameContext)                       \
    148   V(StoreGlobalCell)                         \
    149   V(StoreKeyed)                              \
    150   V(StoreKeyedGeneric)                       \
    151   V(StoreNamedField)                         \
    152   V(StoreNamedGeneric)                       \
    153   V(StringAdd)                               \
    154   V(StringCharCodeAt)                        \
    155   V(StringCharFromCode)                      \
    156   V(StringCompareAndBranch)                  \
    157   V(SubI)                                    \
    158   V(TaggedToI)                               \
    159   V(TailCallThroughMegamorphicCache)         \
    160   V(ThisFunction)                            \
    161   V(ToFastProperties)                        \
    162   V(TransitionElementsKind)                  \
    163   V(TrapAllocationMemento)                   \
    164   V(Typeof)                                  \
    165   V(TypeofIsAndBranch)                       \
    166   V(Uint32ToDouble)                          \
    167   V(UnknownOSRValue)                         \
    168   V(WrapReceiver)
    169 
    170 
    171 #define DECLARE_CONCRETE_INSTRUCTION(type, mnemonic)                        \
    172   virtual Opcode opcode() const FINAL OVERRIDE {                      \
    173     return LInstruction::k##type;                                           \
    174   }                                                                         \
    175   virtual void CompileToNative(LCodeGen* generator) FINAL OVERRIDE;   \
    176   virtual const char* Mnemonic() const FINAL OVERRIDE {               \
    177     return mnemonic;                                                        \
    178   }                                                                         \
    179   static L##type* cast(LInstruction* instr) {                               \
    180     DCHECK(instr->Is##type());                                              \
    181     return reinterpret_cast<L##type*>(instr);                               \
    182   }
    183 
    184 
    185 #define DECLARE_HYDROGEN_ACCESSOR(type)     \
    186   H##type* hydrogen() const {               \
    187     return H##type::cast(hydrogen_value()); \
    188   }
    189 
    190 
    191 class LInstruction : public ZoneObject {
    192  public:
    193   LInstruction()
    194       : environment_(NULL),
    195         hydrogen_value_(NULL),
    196         bit_field_(IsCallBits::encode(false)) {
    197   }
    198 
    199   virtual ~LInstruction() {}
    200 
    201   virtual void CompileToNative(LCodeGen* generator) = 0;
    202   virtual const char* Mnemonic() const = 0;
    203   virtual void PrintTo(StringStream* stream);
    204   virtual void PrintDataTo(StringStream* stream);
    205   virtual void PrintOutputOperandTo(StringStream* stream);
    206 
    207   enum Opcode {
    208     // Declare a unique enum value for each instruction.
    209 #define DECLARE_OPCODE(type) k##type,
    210     LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_OPCODE) kAdapter,
    211     kNumberOfInstructions
    212 #undef DECLARE_OPCODE
    213   };
    214 
    215   virtual Opcode opcode() const = 0;
    216 
    217   // Declare non-virtual type testers for all leaf IR classes.
    218 #define DECLARE_PREDICATE(type) \
    219   bool Is##type() const { return opcode() == k##type; }
    220   LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_PREDICATE)
    221 #undef DECLARE_PREDICATE
    222 
    223   // Declare virtual predicates for instructions that don't have
    224   // an opcode.
    225   virtual bool IsGap() const { return false; }
    226 
    227   virtual bool IsControl() const { return false; }
    228 
    229   // Try deleting this instruction if possible.
    230   virtual bool TryDelete() { return false; }
    231 
    232   void set_environment(LEnvironment* env) { environment_ = env; }
    233   LEnvironment* environment() const { return environment_; }
    234   bool HasEnvironment() const { return environment_ != NULL; }
    235 
    236   void set_pointer_map(LPointerMap* p) { pointer_map_.set(p); }
    237   LPointerMap* pointer_map() const { return pointer_map_.get(); }
    238   bool HasPointerMap() const { return pointer_map_.is_set(); }
    239 
    240   void set_hydrogen_value(HValue* value) { hydrogen_value_ = value; }
    241   HValue* hydrogen_value() const { return hydrogen_value_; }
    242 
    243   virtual void SetDeferredLazyDeoptimizationEnvironment(LEnvironment* env) { }
    244 
    245   void MarkAsCall() { bit_field_ = IsCallBits::update(bit_field_, true); }
    246   bool IsCall() const { return IsCallBits::decode(bit_field_); }
    247 
    248   // Interface to the register allocator and iterators.
    249   bool ClobbersTemps() const { return IsCall(); }
    250   bool ClobbersRegisters() const { return IsCall(); }
    251   virtual bool ClobbersDoubleRegisters(Isolate* isolate) const {
    252     return IsCall() ||
    253            // We only have rudimentary X87Stack tracking, thus in general
    254            // cannot handle phi-nodes.
    255         (IsControl());
    256   }
    257 
    258   virtual bool HasResult() const = 0;
    259   virtual LOperand* result() const = 0;
    260 
    261   bool HasDoubleRegisterResult();
    262   bool HasDoubleRegisterInput();
    263   bool IsDoubleInput(X87Register reg, LCodeGen* cgen);
    264 
    265   LOperand* FirstInput() { return InputAt(0); }
    266   LOperand* Output() { return HasResult() ? result() : NULL; }
    267 
    268   virtual bool HasInterestingComment(LCodeGen* gen) const { return true; }
    269 
    270 #ifdef DEBUG
    271   void VerifyCall();
    272 #endif
    273 
    274   virtual int InputCount() = 0;
    275   virtual LOperand* InputAt(int i) = 0;
    276 
    277  private:
    278   // Iterator support.
    279   friend class InputIterator;
    280 
    281   friend class TempIterator;
    282   virtual int TempCount() = 0;
    283   virtual LOperand* TempAt(int i) = 0;
    284 
    285   class IsCallBits: public BitField<bool, 0, 1> {};
    286 
    287   LEnvironment* environment_;
    288   SetOncePointer<LPointerMap> pointer_map_;
    289   HValue* hydrogen_value_;
    290   int bit_field_;
    291 };
    292 
    293 
    294 // R = number of result operands (0 or 1).
    295 template<int R>
    296 class LTemplateResultInstruction : public LInstruction {
    297  public:
    298   // Allow 0 or 1 output operands.
    299   STATIC_ASSERT(R == 0 || R == 1);
    300   virtual bool HasResult() const FINAL OVERRIDE {
    301     return R != 0 && result() != NULL;
    302   }
    303   void set_result(LOperand* operand) { results_[0] = operand; }
    304   LOperand* result() const { return results_[0]; }
    305 
    306  protected:
    307   EmbeddedContainer<LOperand*, R> results_;
    308 };
    309 
    310 
    311 // R = number of result operands (0 or 1).
    312 // I = number of input operands.
    313 // T = number of temporary operands.
    314 template<int R, int I, int T>
    315 class LTemplateInstruction : public LTemplateResultInstruction<R> {
    316  protected:
    317   EmbeddedContainer<LOperand*, I> inputs_;
    318   EmbeddedContainer<LOperand*, T> temps_;
    319 
    320  private:
    321   // Iterator support.
    322   virtual int InputCount() FINAL OVERRIDE { return I; }
    323   virtual LOperand* InputAt(int i) FINAL OVERRIDE { return inputs_[i]; }
    324 
    325   virtual int TempCount() FINAL OVERRIDE { return T; }
    326   virtual LOperand* TempAt(int i) FINAL OVERRIDE { return temps_[i]; }
    327 };
    328 
    329 
    330 class LGap : public LTemplateInstruction<0, 0, 0> {
    331  public:
    332   explicit LGap(HBasicBlock* block) : block_(block) {
    333     parallel_moves_[BEFORE] = NULL;
    334     parallel_moves_[START] = NULL;
    335     parallel_moves_[END] = NULL;
    336     parallel_moves_[AFTER] = NULL;
    337   }
    338 
    339   // Can't use the DECLARE-macro here because of sub-classes.
    340   virtual bool IsGap() const FINAL OVERRIDE { return true; }
    341   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
    342   static LGap* cast(LInstruction* instr) {
    343     DCHECK(instr->IsGap());
    344     return reinterpret_cast<LGap*>(instr);
    345   }
    346 
    347   bool IsRedundant() const;
    348 
    349   HBasicBlock* block() const { return block_; }
    350 
    351   enum InnerPosition {
    352     BEFORE,
    353     START,
    354     END,
    355     AFTER,
    356     FIRST_INNER_POSITION = BEFORE,
    357     LAST_INNER_POSITION = AFTER
    358   };
    359 
    360   LParallelMove* GetOrCreateParallelMove(InnerPosition pos, Zone* zone)  {
    361     if (parallel_moves_[pos] == NULL) {
    362       parallel_moves_[pos] = new(zone) LParallelMove(zone);
    363     }
    364     return parallel_moves_[pos];
    365   }
    366 
    367   LParallelMove* GetParallelMove(InnerPosition pos)  {
    368     return parallel_moves_[pos];
    369   }
    370 
    371  private:
    372   LParallelMove* parallel_moves_[LAST_INNER_POSITION + 1];
    373   HBasicBlock* block_;
    374 };
    375 
    376 
    377 class LInstructionGap FINAL : public LGap {
    378  public:
    379   explicit LInstructionGap(HBasicBlock* block) : LGap(block) { }
    380 
    381   virtual bool HasInterestingComment(LCodeGen* gen) const OVERRIDE {
    382     return !IsRedundant();
    383   }
    384 
    385   DECLARE_CONCRETE_INSTRUCTION(InstructionGap, "gap")
    386 };
    387 
    388 
    389 class LClobberDoubles FINAL : public LTemplateInstruction<0, 0, 0> {
    390  public:
    391   explicit LClobberDoubles(Isolate* isolate) { }
    392 
    393   virtual bool ClobbersDoubleRegisters(Isolate* isolate) const OVERRIDE {
    394     return true;
    395   }
    396 
    397   DECLARE_CONCRETE_INSTRUCTION(ClobberDoubles, "clobber-d")
    398 };
    399 
    400 
    401 class LGoto FINAL : public LTemplateInstruction<0, 0, 0> {
    402  public:
    403   explicit LGoto(HBasicBlock* block) : block_(block) { }
    404 
    405   virtual bool HasInterestingComment(LCodeGen* gen) const OVERRIDE;
    406   DECLARE_CONCRETE_INSTRUCTION(Goto, "goto")
    407   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
    408   virtual bool IsControl() const OVERRIDE { return true; }
    409 
    410   int block_id() const { return block_->block_id(); }
    411   virtual bool ClobbersDoubleRegisters(Isolate* isolate) const OVERRIDE {
    412     return false;
    413   }
    414 
    415   bool jumps_to_join() const { return block_->predecessors()->length() > 1; }
    416   HBasicBlock* block() const { return block_; }
    417 
    418  private:
    419   HBasicBlock* block_;
    420 };
    421 
    422 
    423 class LLazyBailout FINAL : public LTemplateInstruction<0, 0, 0> {
    424  public:
    425   DECLARE_CONCRETE_INSTRUCTION(LazyBailout, "lazy-bailout")
    426 };
    427 
    428 
    429 class LDummy FINAL : public LTemplateInstruction<1, 0, 0> {
    430  public:
    431   LDummy() {}
    432   DECLARE_CONCRETE_INSTRUCTION(Dummy, "dummy")
    433 };
    434 
    435 
    436 class LDummyUse FINAL : public LTemplateInstruction<1, 1, 0> {
    437  public:
    438   explicit LDummyUse(LOperand* value) {
    439     inputs_[0] = value;
    440   }
    441   DECLARE_CONCRETE_INSTRUCTION(DummyUse, "dummy-use")
    442 };
    443 
    444 
    445 class LDeoptimize FINAL : public LTemplateInstruction<0, 0, 0> {
    446  public:
    447   virtual bool IsControl() const OVERRIDE { return true; }
    448   DECLARE_CONCRETE_INSTRUCTION(Deoptimize, "deoptimize")
    449   DECLARE_HYDROGEN_ACCESSOR(Deoptimize)
    450 };
    451 
    452 
    453 class LLabel FINAL : public LGap {
    454  public:
    455   explicit LLabel(HBasicBlock* block)
    456       : LGap(block), replacement_(NULL) { }
    457 
    458   virtual bool HasInterestingComment(LCodeGen* gen) const OVERRIDE {
    459     return false;
    460   }
    461   DECLARE_CONCRETE_INSTRUCTION(Label, "label")
    462 
    463   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
    464 
    465   int block_id() const { return block()->block_id(); }
    466   bool is_loop_header() const { return block()->IsLoopHeader(); }
    467   bool is_osr_entry() const { return block()->is_osr_entry(); }
    468   Label* label() { return &label_; }
    469   LLabel* replacement() const { return replacement_; }
    470   void set_replacement(LLabel* label) { replacement_ = label; }
    471   bool HasReplacement() const { return replacement_ != NULL; }
    472 
    473  private:
    474   Label label_;
    475   LLabel* replacement_;
    476 };
    477 
    478 
    479 class LParameter FINAL : public LTemplateInstruction<1, 0, 0> {
    480  public:
    481   virtual bool HasInterestingComment(LCodeGen* gen) const OVERRIDE {
    482     return false;
    483   }
    484   DECLARE_CONCRETE_INSTRUCTION(Parameter, "parameter")
    485 };
    486 
    487 
    488 class LCallStub FINAL : public LTemplateInstruction<1, 1, 0> {
    489  public:
    490   explicit LCallStub(LOperand* context) {
    491     inputs_[0] = context;
    492   }
    493 
    494   LOperand* context() { return inputs_[0]; }
    495 
    496   DECLARE_CONCRETE_INSTRUCTION(CallStub, "call-stub")
    497   DECLARE_HYDROGEN_ACCESSOR(CallStub)
    498 };
    499 
    500 
    501 class LTailCallThroughMegamorphicCache FINAL
    502     : public LTemplateInstruction<0, 3, 0> {
    503  public:
    504   explicit LTailCallThroughMegamorphicCache(LOperand* context,
    505                                             LOperand* receiver,
    506                                             LOperand* name) {
    507     inputs_[0] = context;
    508     inputs_[1] = receiver;
    509     inputs_[2] = name;
    510   }
    511 
    512   LOperand* context() { return inputs_[0]; }
    513   LOperand* receiver() { return inputs_[1]; }
    514   LOperand* name() { return inputs_[2]; }
    515 
    516   DECLARE_CONCRETE_INSTRUCTION(TailCallThroughMegamorphicCache,
    517                                "tail-call-through-megamorphic-cache")
    518   DECLARE_HYDROGEN_ACCESSOR(TailCallThroughMegamorphicCache)
    519 };
    520 
    521 
    522 class LUnknownOSRValue FINAL : public LTemplateInstruction<1, 0, 0> {
    523  public:
    524   virtual bool HasInterestingComment(LCodeGen* gen) const OVERRIDE {
    525     return false;
    526   }
    527   DECLARE_CONCRETE_INSTRUCTION(UnknownOSRValue, "unknown-osr-value")
    528 };
    529 
    530 
    531 template<int I, int T>
    532 class LControlInstruction: public LTemplateInstruction<0, I, T> {
    533  public:
    534   LControlInstruction() : false_label_(NULL), true_label_(NULL) { }
    535 
    536   virtual bool IsControl() const FINAL OVERRIDE { return true; }
    537 
    538   int SuccessorCount() { return hydrogen()->SuccessorCount(); }
    539   HBasicBlock* SuccessorAt(int i) { return hydrogen()->SuccessorAt(i); }
    540 
    541   int TrueDestination(LChunk* chunk) {
    542     return chunk->LookupDestination(true_block_id());
    543   }
    544   int FalseDestination(LChunk* chunk) {
    545     return chunk->LookupDestination(false_block_id());
    546   }
    547 
    548   Label* TrueLabel(LChunk* chunk) {
    549     if (true_label_ == NULL) {
    550       true_label_ = chunk->GetAssemblyLabel(TrueDestination(chunk));
    551     }
    552     return true_label_;
    553   }
    554   Label* FalseLabel(LChunk* chunk) {
    555     if (false_label_ == NULL) {
    556       false_label_ = chunk->GetAssemblyLabel(FalseDestination(chunk));
    557     }
    558     return false_label_;
    559   }
    560 
    561  protected:
    562   int true_block_id() { return SuccessorAt(0)->block_id(); }
    563   int false_block_id() { return SuccessorAt(1)->block_id(); }
    564 
    565  private:
    566   HControlInstruction* hydrogen() {
    567     return HControlInstruction::cast(this->hydrogen_value());
    568   }
    569 
    570   Label* false_label_;
    571   Label* true_label_;
    572 };
    573 
    574 
    575 class LWrapReceiver FINAL : public LTemplateInstruction<1, 2, 1> {
    576  public:
    577   LWrapReceiver(LOperand* receiver,
    578                 LOperand* function,
    579                 LOperand* temp) {
    580     inputs_[0] = receiver;
    581     inputs_[1] = function;
    582     temps_[0] = temp;
    583   }
    584 
    585   LOperand* receiver() { return inputs_[0]; }
    586   LOperand* function() { return inputs_[1]; }
    587   LOperand* temp() { return temps_[0]; }
    588 
    589   DECLARE_CONCRETE_INSTRUCTION(WrapReceiver, "wrap-receiver")
    590   DECLARE_HYDROGEN_ACCESSOR(WrapReceiver)
    591 };
    592 
    593 
    594 class LApplyArguments FINAL : public LTemplateInstruction<1, 4, 0> {
    595  public:
    596   LApplyArguments(LOperand* function,
    597                   LOperand* receiver,
    598                   LOperand* length,
    599                   LOperand* elements) {
    600     inputs_[0] = function;
    601     inputs_[1] = receiver;
    602     inputs_[2] = length;
    603     inputs_[3] = elements;
    604   }
    605 
    606   LOperand* function() { return inputs_[0]; }
    607   LOperand* receiver() { return inputs_[1]; }
    608   LOperand* length() { return inputs_[2]; }
    609   LOperand* elements() { return inputs_[3]; }
    610 
    611   DECLARE_CONCRETE_INSTRUCTION(ApplyArguments, "apply-arguments")
    612 };
    613 
    614 
    615 class LAccessArgumentsAt FINAL : public LTemplateInstruction<1, 3, 0> {
    616  public:
    617   LAccessArgumentsAt(LOperand* arguments, LOperand* length, LOperand* index) {
    618     inputs_[0] = arguments;
    619     inputs_[1] = length;
    620     inputs_[2] = index;
    621   }
    622 
    623   LOperand* arguments() { return inputs_[0]; }
    624   LOperand* length() { return inputs_[1]; }
    625   LOperand* index() { return inputs_[2]; }
    626 
    627   DECLARE_CONCRETE_INSTRUCTION(AccessArgumentsAt, "access-arguments-at")
    628 
    629   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
    630 };
    631 
    632 
    633 class LArgumentsLength FINAL : public LTemplateInstruction<1, 1, 0> {
    634  public:
    635   explicit LArgumentsLength(LOperand* elements) {
    636     inputs_[0] = elements;
    637   }
    638 
    639   LOperand* elements() { return inputs_[0]; }
    640 
    641   DECLARE_CONCRETE_INSTRUCTION(ArgumentsLength, "arguments-length")
    642 };
    643 
    644 
    645 class LArgumentsElements FINAL : public LTemplateInstruction<1, 0, 0> {
    646  public:
    647   DECLARE_CONCRETE_INSTRUCTION(ArgumentsElements, "arguments-elements")
    648   DECLARE_HYDROGEN_ACCESSOR(ArgumentsElements)
    649 };
    650 
    651 
    652 class LDebugBreak FINAL : public LTemplateInstruction<0, 0, 0> {
    653  public:
    654   DECLARE_CONCRETE_INSTRUCTION(DebugBreak, "break")
    655 };
    656 
    657 
    658 class LModByPowerOf2I FINAL : public LTemplateInstruction<1, 1, 0> {
    659  public:
    660   LModByPowerOf2I(LOperand* dividend, int32_t divisor) {
    661     inputs_[0] = dividend;
    662     divisor_ = divisor;
    663   }
    664 
    665   LOperand* dividend() { return inputs_[0]; }
    666   int32_t divisor() const { return divisor_; }
    667 
    668   DECLARE_CONCRETE_INSTRUCTION(ModByPowerOf2I, "mod-by-power-of-2-i")
    669   DECLARE_HYDROGEN_ACCESSOR(Mod)
    670 
    671  private:
    672   int32_t divisor_;
    673 };
    674 
    675 
    676 class LModByConstI FINAL : public LTemplateInstruction<1, 1, 2> {
    677  public:
    678   LModByConstI(LOperand* dividend,
    679                int32_t divisor,
    680                LOperand* temp1,
    681                LOperand* temp2) {
    682     inputs_[0] = dividend;
    683     divisor_ = divisor;
    684     temps_[0] = temp1;
    685     temps_[1] = temp2;
    686   }
    687 
    688   LOperand* dividend() { return inputs_[0]; }
    689   int32_t divisor() const { return divisor_; }
    690   LOperand* temp1() { return temps_[0]; }
    691   LOperand* temp2() { return temps_[1]; }
    692 
    693   DECLARE_CONCRETE_INSTRUCTION(ModByConstI, "mod-by-const-i")
    694   DECLARE_HYDROGEN_ACCESSOR(Mod)
    695 
    696  private:
    697   int32_t divisor_;
    698 };
    699 
    700 
    701 class LModI FINAL : public LTemplateInstruction<1, 2, 1> {
    702  public:
    703   LModI(LOperand* left, LOperand* right, LOperand* temp) {
    704     inputs_[0] = left;
    705     inputs_[1] = right;
    706     temps_[0] = temp;
    707   }
    708 
    709   LOperand* left() { return inputs_[0]; }
    710   LOperand* right() { return inputs_[1]; }
    711   LOperand* temp() { return temps_[0]; }
    712 
    713   DECLARE_CONCRETE_INSTRUCTION(ModI, "mod-i")
    714   DECLARE_HYDROGEN_ACCESSOR(Mod)
    715 };
    716 
    717 
    718 class LDivByPowerOf2I FINAL : public LTemplateInstruction<1, 1, 0> {
    719  public:
    720   LDivByPowerOf2I(LOperand* dividend, int32_t divisor) {
    721     inputs_[0] = dividend;
    722     divisor_ = divisor;
    723   }
    724 
    725   LOperand* dividend() { return inputs_[0]; }
    726   int32_t divisor() const { return divisor_; }
    727 
    728   DECLARE_CONCRETE_INSTRUCTION(DivByPowerOf2I, "div-by-power-of-2-i")
    729   DECLARE_HYDROGEN_ACCESSOR(Div)
    730 
    731  private:
    732   int32_t divisor_;
    733 };
    734 
    735 
    736 class LDivByConstI FINAL : public LTemplateInstruction<1, 1, 2> {
    737  public:
    738   LDivByConstI(LOperand* dividend,
    739                int32_t divisor,
    740                LOperand* temp1,
    741                LOperand* temp2) {
    742     inputs_[0] = dividend;
    743     divisor_ = divisor;
    744     temps_[0] = temp1;
    745     temps_[1] = temp2;
    746   }
    747 
    748   LOperand* dividend() { return inputs_[0]; }
    749   int32_t divisor() const { return divisor_; }
    750   LOperand* temp1() { return temps_[0]; }
    751   LOperand* temp2() { return temps_[1]; }
    752 
    753   DECLARE_CONCRETE_INSTRUCTION(DivByConstI, "div-by-const-i")
    754   DECLARE_HYDROGEN_ACCESSOR(Div)
    755 
    756  private:
    757   int32_t divisor_;
    758 };
    759 
    760 
    761 class LDivI FINAL : public LTemplateInstruction<1, 2, 1> {
    762  public:
    763   LDivI(LOperand* dividend, LOperand* divisor, LOperand* temp) {
    764     inputs_[0] = dividend;
    765     inputs_[1] = divisor;
    766     temps_[0] = temp;
    767   }
    768 
    769   LOperand* dividend() { return inputs_[0]; }
    770   LOperand* divisor() { return inputs_[1]; }
    771   LOperand* temp() { return temps_[0]; }
    772 
    773   DECLARE_CONCRETE_INSTRUCTION(DivI, "div-i")
    774   DECLARE_HYDROGEN_ACCESSOR(BinaryOperation)
    775 };
    776 
    777 
    778 class LFlooringDivByPowerOf2I FINAL : public LTemplateInstruction<1, 1, 0> {
    779  public:
    780   LFlooringDivByPowerOf2I(LOperand* dividend, int32_t divisor) {
    781     inputs_[0] = dividend;
    782     divisor_ = divisor;
    783   }
    784 
    785   LOperand* dividend() { return inputs_[0]; }
    786   int32_t divisor() const { return divisor_; }
    787 
    788   DECLARE_CONCRETE_INSTRUCTION(FlooringDivByPowerOf2I,
    789                                "flooring-div-by-power-of-2-i")
    790   DECLARE_HYDROGEN_ACCESSOR(MathFloorOfDiv)
    791 
    792  private:
    793   int32_t divisor_;
    794 };
    795 
    796 
    797 class LFlooringDivByConstI FINAL : public LTemplateInstruction<1, 1, 3> {
    798  public:
    799   LFlooringDivByConstI(LOperand* dividend,
    800                        int32_t divisor,
    801                        LOperand* temp1,
    802                        LOperand* temp2,
    803                        LOperand* temp3) {
    804     inputs_[0] = dividend;
    805     divisor_ = divisor;
    806     temps_[0] = temp1;
    807     temps_[1] = temp2;
    808     temps_[2] = temp3;
    809   }
    810 
    811   LOperand* dividend() { return inputs_[0]; }
    812   int32_t divisor() const { return divisor_; }
    813   LOperand* temp1() { return temps_[0]; }
    814   LOperand* temp2() { return temps_[1]; }
    815   LOperand* temp3() { return temps_[2]; }
    816 
    817   DECLARE_CONCRETE_INSTRUCTION(FlooringDivByConstI, "flooring-div-by-const-i")
    818   DECLARE_HYDROGEN_ACCESSOR(MathFloorOfDiv)
    819 
    820  private:
    821   int32_t divisor_;
    822 };
    823 
    824 
    825 class LFlooringDivI FINAL : public LTemplateInstruction<1, 2, 1> {
    826  public:
    827   LFlooringDivI(LOperand* dividend, LOperand* divisor, LOperand* temp) {
    828     inputs_[0] = dividend;
    829     inputs_[1] = divisor;
    830     temps_[0] = temp;
    831   }
    832 
    833   LOperand* dividend() { return inputs_[0]; }
    834   LOperand* divisor() { return inputs_[1]; }
    835   LOperand* temp() { return temps_[0]; }
    836 
    837   DECLARE_CONCRETE_INSTRUCTION(FlooringDivI, "flooring-div-i")
    838   DECLARE_HYDROGEN_ACCESSOR(MathFloorOfDiv)
    839 };
    840 
    841 
    842 class LMulI FINAL : public LTemplateInstruction<1, 2, 1> {
    843  public:
    844   LMulI(LOperand* left, LOperand* right, LOperand* temp) {
    845     inputs_[0] = left;
    846     inputs_[1] = right;
    847     temps_[0] = temp;
    848   }
    849 
    850   LOperand* left() { return inputs_[0]; }
    851   LOperand* right() { return inputs_[1]; }
    852   LOperand* temp() { return temps_[0]; }
    853 
    854   DECLARE_CONCRETE_INSTRUCTION(MulI, "mul-i")
    855   DECLARE_HYDROGEN_ACCESSOR(Mul)
    856 };
    857 
    858 
    859 class LCompareNumericAndBranch FINAL : public LControlInstruction<2, 0> {
    860  public:
    861   LCompareNumericAndBranch(LOperand* left, LOperand* right) {
    862     inputs_[0] = left;
    863     inputs_[1] = right;
    864   }
    865 
    866   LOperand* left() { return inputs_[0]; }
    867   LOperand* right() { return inputs_[1]; }
    868 
    869   DECLARE_CONCRETE_INSTRUCTION(CompareNumericAndBranch,
    870                                "compare-numeric-and-branch")
    871   DECLARE_HYDROGEN_ACCESSOR(CompareNumericAndBranch)
    872 
    873   Token::Value op() const { return hydrogen()->token(); }
    874   bool is_double() const {
    875     return hydrogen()->representation().IsDouble();
    876   }
    877 
    878   virtual void PrintDataTo(StringStream* stream);
    879 };
    880 
    881 
    882 class LMathFloor FINAL : public LTemplateInstruction<1, 1, 0> {
    883  public:
    884   explicit LMathFloor(LOperand* value) {
    885     inputs_[0] = value;
    886   }
    887 
    888   LOperand* value() { return inputs_[0]; }
    889 
    890   DECLARE_CONCRETE_INSTRUCTION(MathFloor, "math-floor")
    891   DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
    892 };
    893 
    894 
    895 class LMathRound FINAL : public LTemplateInstruction<1, 1, 0> {
    896  public:
    897   explicit LMathRound(LOperand* value) {
    898     inputs_[0] = value;
    899   }
    900 
    901   LOperand* value() { return inputs_[0]; }
    902 
    903   DECLARE_CONCRETE_INSTRUCTION(MathRound, "math-round")
    904   DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
    905 };
    906 
    907 
    908 class LMathFround FINAL : public LTemplateInstruction<1, 1, 0> {
    909  public:
    910   explicit LMathFround(LOperand* value) { inputs_[0] = value; }
    911 
    912   LOperand* value() { return inputs_[0]; }
    913 
    914   DECLARE_CONCRETE_INSTRUCTION(MathFround, "math-fround")
    915 };
    916 
    917 
    918 class LMathAbs FINAL : public LTemplateInstruction<1, 2, 0> {
    919  public:
    920   LMathAbs(LOperand* context, LOperand* value) {
    921     inputs_[1] = context;
    922     inputs_[0] = value;
    923   }
    924 
    925   LOperand* context() { return inputs_[1]; }
    926   LOperand* value() { return inputs_[0]; }
    927 
    928   DECLARE_CONCRETE_INSTRUCTION(MathAbs, "math-abs")
    929   DECLARE_HYDROGEN_ACCESSOR(UnaryMathOperation)
    930 };
    931 
    932 
    933 class LMathLog FINAL : public LTemplateInstruction<1, 1, 0> {
    934  public:
    935   explicit LMathLog(LOperand* value) {
    936     inputs_[0] = value;
    937   }
    938 
    939   LOperand* value() { return inputs_[0]; }
    940 
    941   DECLARE_CONCRETE_INSTRUCTION(MathLog, "math-log")
    942 };
    943 
    944 
    945 class LMathClz32 FINAL : public LTemplateInstruction<1, 1, 0> {
    946  public:
    947   explicit LMathClz32(LOperand* value) {
    948     inputs_[0] = value;
    949   }
    950 
    951   LOperand* value() { return inputs_[0]; }
    952 
    953   DECLARE_CONCRETE_INSTRUCTION(MathClz32, "math-clz32")
    954 };
    955 
    956 
    957 class LMathExp FINAL : public LTemplateInstruction<1, 1, 2> {
    958  public:
    959   LMathExp(LOperand* value,
    960            LOperand* temp1,
    961            LOperand* temp2) {
    962     inputs_[0] = value;
    963     temps_[0] = temp1;
    964     temps_[1] = temp2;
    965     ExternalReference::InitializeMathExpData();
    966   }
    967 
    968   LOperand* value() { return inputs_[0]; }
    969   LOperand* temp1() { return temps_[0]; }
    970   LOperand* temp2() { return temps_[1]; }
    971 
    972   DECLARE_CONCRETE_INSTRUCTION(MathExp, "math-exp")
    973 };
    974 
    975 
    976 class LMathSqrt FINAL : public LTemplateInstruction<1, 1, 2> {
    977  public:
    978   explicit LMathSqrt(LOperand* value,
    979                      LOperand* temp1,
    980                      LOperand* temp2) {
    981     inputs_[0] = value;
    982     temps_[0] = temp1;
    983     temps_[1] = temp2;
    984   }
    985 
    986   LOperand* value() { return inputs_[0]; }
    987   LOperand* temp1() { return temps_[0]; }
    988   LOperand* temp2() { return temps_[1]; }
    989 
    990   DECLARE_CONCRETE_INSTRUCTION(MathSqrt, "math-sqrt")
    991 };
    992 
    993 
    994 class LMathPowHalf FINAL : public LTemplateInstruction<1, 1, 0> {
    995  public:
    996   explicit LMathPowHalf(LOperand* value) { inputs_[0] = value; }
    997 
    998   LOperand* value() { return inputs_[0]; }
    999 
   1000   DECLARE_CONCRETE_INSTRUCTION(MathPowHalf, "math-pow-half")
   1001 };
   1002 
   1003 
   1004 class LCmpObjectEqAndBranch FINAL : public LControlInstruction<2, 0> {
   1005  public:
   1006   LCmpObjectEqAndBranch(LOperand* left, LOperand* right) {
   1007     inputs_[0] = left;
   1008     inputs_[1] = right;
   1009   }
   1010 
   1011   LOperand* left() { return inputs_[0]; }
   1012   LOperand* right() { return inputs_[1]; }
   1013 
   1014   DECLARE_CONCRETE_INSTRUCTION(CmpObjectEqAndBranch, "cmp-object-eq-and-branch")
   1015 };
   1016 
   1017 
   1018 class LCmpHoleAndBranch FINAL : public LControlInstruction<1, 0> {
   1019  public:
   1020   explicit LCmpHoleAndBranch(LOperand* object) {
   1021     inputs_[0] = object;
   1022   }
   1023 
   1024   LOperand* object() { return inputs_[0]; }
   1025 
   1026   DECLARE_CONCRETE_INSTRUCTION(CmpHoleAndBranch, "cmp-hole-and-branch")
   1027   DECLARE_HYDROGEN_ACCESSOR(CompareHoleAndBranch)
   1028 };
   1029 
   1030 
   1031 class LCompareMinusZeroAndBranch FINAL : public LControlInstruction<1, 0> {
   1032  public:
   1033   explicit LCompareMinusZeroAndBranch(LOperand* value) { inputs_[0] = value; }
   1034 
   1035   LOperand* value() { return inputs_[0]; }
   1036 
   1037   DECLARE_CONCRETE_INSTRUCTION(CompareMinusZeroAndBranch,
   1038                                "cmp-minus-zero-and-branch")
   1039   DECLARE_HYDROGEN_ACCESSOR(CompareMinusZeroAndBranch)
   1040 };
   1041 
   1042 
   1043 class LIsObjectAndBranch FINAL : public LControlInstruction<1, 1> {
   1044  public:
   1045   LIsObjectAndBranch(LOperand* value, LOperand* temp) {
   1046     inputs_[0] = value;
   1047     temps_[0] = temp;
   1048   }
   1049 
   1050   LOperand* value() { return inputs_[0]; }
   1051   LOperand* temp() { return temps_[0]; }
   1052 
   1053   DECLARE_CONCRETE_INSTRUCTION(IsObjectAndBranch, "is-object-and-branch")
   1054 
   1055   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1056 };
   1057 
   1058 
   1059 class LIsStringAndBranch FINAL : public LControlInstruction<1, 1> {
   1060  public:
   1061   LIsStringAndBranch(LOperand* value, LOperand* temp) {
   1062     inputs_[0] = value;
   1063     temps_[0] = temp;
   1064   }
   1065 
   1066   LOperand* value() { return inputs_[0]; }
   1067   LOperand* temp() { return temps_[0]; }
   1068 
   1069   DECLARE_CONCRETE_INSTRUCTION(IsStringAndBranch, "is-string-and-branch")
   1070   DECLARE_HYDROGEN_ACCESSOR(IsStringAndBranch)
   1071 
   1072   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1073 };
   1074 
   1075 
   1076 class LIsSmiAndBranch FINAL : public LControlInstruction<1, 0> {
   1077  public:
   1078   explicit LIsSmiAndBranch(LOperand* value) {
   1079     inputs_[0] = value;
   1080   }
   1081 
   1082   LOperand* value() { return inputs_[0]; }
   1083 
   1084   DECLARE_CONCRETE_INSTRUCTION(IsSmiAndBranch, "is-smi-and-branch")
   1085   DECLARE_HYDROGEN_ACCESSOR(IsSmiAndBranch)
   1086 
   1087   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1088 };
   1089 
   1090 
   1091 class LIsUndetectableAndBranch FINAL : public LControlInstruction<1, 1> {
   1092  public:
   1093   LIsUndetectableAndBranch(LOperand* value, LOperand* temp) {
   1094     inputs_[0] = value;
   1095     temps_[0] = temp;
   1096   }
   1097 
   1098   LOperand* value() { return inputs_[0]; }
   1099   LOperand* temp() { return temps_[0]; }
   1100 
   1101   DECLARE_CONCRETE_INSTRUCTION(IsUndetectableAndBranch,
   1102                                "is-undetectable-and-branch")
   1103   DECLARE_HYDROGEN_ACCESSOR(IsUndetectableAndBranch)
   1104 
   1105   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1106 };
   1107 
   1108 
   1109 class LStringCompareAndBranch FINAL : public LControlInstruction<3, 0> {
   1110  public:
   1111   LStringCompareAndBranch(LOperand* context, LOperand* left, LOperand* right) {
   1112     inputs_[0] = context;
   1113     inputs_[1] = left;
   1114     inputs_[2] = right;
   1115   }
   1116 
   1117   LOperand* context() { return inputs_[1]; }
   1118   LOperand* left() { return inputs_[1]; }
   1119   LOperand* right() { return inputs_[2]; }
   1120 
   1121   DECLARE_CONCRETE_INSTRUCTION(StringCompareAndBranch,
   1122                                "string-compare-and-branch")
   1123   DECLARE_HYDROGEN_ACCESSOR(StringCompareAndBranch)
   1124 
   1125   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1126 
   1127   Token::Value op() const { return hydrogen()->token(); }
   1128 };
   1129 
   1130 
   1131 class LHasInstanceTypeAndBranch FINAL : public LControlInstruction<1, 1> {
   1132  public:
   1133   LHasInstanceTypeAndBranch(LOperand* value, LOperand* temp) {
   1134     inputs_[0] = value;
   1135     temps_[0] = temp;
   1136   }
   1137 
   1138   LOperand* value() { return inputs_[0]; }
   1139   LOperand* temp() { return temps_[0]; }
   1140 
   1141   DECLARE_CONCRETE_INSTRUCTION(HasInstanceTypeAndBranch,
   1142                                "has-instance-type-and-branch")
   1143   DECLARE_HYDROGEN_ACCESSOR(HasInstanceTypeAndBranch)
   1144 
   1145   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1146 };
   1147 
   1148 
   1149 class LGetCachedArrayIndex FINAL : public LTemplateInstruction<1, 1, 0> {
   1150  public:
   1151   explicit LGetCachedArrayIndex(LOperand* value) {
   1152     inputs_[0] = value;
   1153   }
   1154 
   1155   LOperand* value() { return inputs_[0]; }
   1156 
   1157   DECLARE_CONCRETE_INSTRUCTION(GetCachedArrayIndex, "get-cached-array-index")
   1158   DECLARE_HYDROGEN_ACCESSOR(GetCachedArrayIndex)
   1159 };
   1160 
   1161 
   1162 class LHasCachedArrayIndexAndBranch FINAL
   1163     : public LControlInstruction<1, 0> {
   1164  public:
   1165   explicit LHasCachedArrayIndexAndBranch(LOperand* value) {
   1166     inputs_[0] = value;
   1167   }
   1168 
   1169   LOperand* value() { return inputs_[0]; }
   1170 
   1171   DECLARE_CONCRETE_INSTRUCTION(HasCachedArrayIndexAndBranch,
   1172                                "has-cached-array-index-and-branch")
   1173 
   1174   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1175 };
   1176 
   1177 
   1178 class LIsConstructCallAndBranch FINAL : public LControlInstruction<0, 1> {
   1179  public:
   1180   explicit LIsConstructCallAndBranch(LOperand* temp) {
   1181     temps_[0] = temp;
   1182   }
   1183 
   1184   LOperand* temp() { return temps_[0]; }
   1185 
   1186   DECLARE_CONCRETE_INSTRUCTION(IsConstructCallAndBranch,
   1187                                "is-construct-call-and-branch")
   1188 };
   1189 
   1190 
   1191 class LClassOfTestAndBranch FINAL : public LControlInstruction<1, 2> {
   1192  public:
   1193   LClassOfTestAndBranch(LOperand* value, LOperand* temp, LOperand* temp2) {
   1194     inputs_[0] = value;
   1195     temps_[0] = temp;
   1196     temps_[1] = temp2;
   1197   }
   1198 
   1199   LOperand* value() { return inputs_[0]; }
   1200   LOperand* temp() { return temps_[0]; }
   1201   LOperand* temp2() { return temps_[1]; }
   1202 
   1203   DECLARE_CONCRETE_INSTRUCTION(ClassOfTestAndBranch,
   1204                                "class-of-test-and-branch")
   1205   DECLARE_HYDROGEN_ACCESSOR(ClassOfTestAndBranch)
   1206 
   1207   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1208 };
   1209 
   1210 
   1211 class LCmpT FINAL : public LTemplateInstruction<1, 3, 0> {
   1212  public:
   1213   LCmpT(LOperand* context, LOperand* left, LOperand* right) {
   1214     inputs_[0] = context;
   1215     inputs_[1] = left;
   1216     inputs_[2] = right;
   1217   }
   1218 
   1219   DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
   1220   DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
   1221 
   1222   LOperand* context() { return inputs_[0]; }
   1223   Token::Value op() const { return hydrogen()->token(); }
   1224 };
   1225 
   1226 
   1227 class LInstanceOf FINAL : public LTemplateInstruction<1, 3, 0> {
   1228  public:
   1229   LInstanceOf(LOperand* context, LOperand* left, LOperand* right) {
   1230     inputs_[0] = context;
   1231     inputs_[1] = left;
   1232     inputs_[2] = right;
   1233   }
   1234 
   1235   LOperand* context() { return inputs_[0]; }
   1236 
   1237   DECLARE_CONCRETE_INSTRUCTION(InstanceOf, "instance-of")
   1238 };
   1239 
   1240 
   1241 class LInstanceOfKnownGlobal FINAL : public LTemplateInstruction<1, 2, 1> {
   1242  public:
   1243   LInstanceOfKnownGlobal(LOperand* context, LOperand* value, LOperand* temp) {
   1244     inputs_[0] = context;
   1245     inputs_[1] = value;
   1246     temps_[0] = temp;
   1247   }
   1248 
   1249   LOperand* context() { return inputs_[0]; }
   1250   LOperand* value() { return inputs_[1]; }
   1251   LOperand* temp() { return temps_[0]; }
   1252 
   1253   DECLARE_CONCRETE_INSTRUCTION(InstanceOfKnownGlobal,
   1254                                "instance-of-known-global")
   1255   DECLARE_HYDROGEN_ACCESSOR(InstanceOfKnownGlobal)
   1256 
   1257   Handle<JSFunction> function() const { return hydrogen()->function(); }
   1258   LEnvironment* GetDeferredLazyDeoptimizationEnvironment() {
   1259     return lazy_deopt_env_;
   1260   }
   1261   virtual void SetDeferredLazyDeoptimizationEnvironment(
   1262       LEnvironment* env) OVERRIDE {
   1263     lazy_deopt_env_ = env;
   1264   }
   1265 
   1266  private:
   1267   LEnvironment* lazy_deopt_env_;
   1268 };
   1269 
   1270 
   1271 class LBoundsCheck FINAL : public LTemplateInstruction<0, 2, 0> {
   1272  public:
   1273   LBoundsCheck(LOperand* index, LOperand* length) {
   1274     inputs_[0] = index;
   1275     inputs_[1] = length;
   1276   }
   1277 
   1278   LOperand* index() { return inputs_[0]; }
   1279   LOperand* length() { return inputs_[1]; }
   1280 
   1281   DECLARE_CONCRETE_INSTRUCTION(BoundsCheck, "bounds-check")
   1282   DECLARE_HYDROGEN_ACCESSOR(BoundsCheck)
   1283 };
   1284 
   1285 
   1286 class LBitI FINAL : public LTemplateInstruction<1, 2, 0> {
   1287  public:
   1288   LBitI(LOperand* left, LOperand* right) {
   1289     inputs_[0] = left;
   1290     inputs_[1] = right;
   1291   }
   1292 
   1293   LOperand* left() { return inputs_[0]; }
   1294   LOperand* right() { return inputs_[1]; }
   1295 
   1296   DECLARE_CONCRETE_INSTRUCTION(BitI, "bit-i")
   1297   DECLARE_HYDROGEN_ACCESSOR(Bitwise)
   1298 
   1299   Token::Value op() const { return hydrogen()->op(); }
   1300 };
   1301 
   1302 
   1303 class LShiftI FINAL : public LTemplateInstruction<1, 2, 0> {
   1304  public:
   1305   LShiftI(Token::Value op, LOperand* left, LOperand* right, bool can_deopt)
   1306       : op_(op), can_deopt_(can_deopt) {
   1307     inputs_[0] = left;
   1308     inputs_[1] = right;
   1309   }
   1310 
   1311   LOperand* left() { return inputs_[0]; }
   1312   LOperand* right() { return inputs_[1]; }
   1313 
   1314   DECLARE_CONCRETE_INSTRUCTION(ShiftI, "shift-i")
   1315 
   1316   Token::Value op() const { return op_; }
   1317   bool can_deopt() const { return can_deopt_; }
   1318 
   1319  private:
   1320   Token::Value op_;
   1321   bool can_deopt_;
   1322 };
   1323 
   1324 
   1325 class LSubI FINAL : public LTemplateInstruction<1, 2, 0> {
   1326  public:
   1327   LSubI(LOperand* left, LOperand* right) {
   1328     inputs_[0] = left;
   1329     inputs_[1] = right;
   1330   }
   1331 
   1332   LOperand* left() { return inputs_[0]; }
   1333   LOperand* right() { return inputs_[1]; }
   1334 
   1335   DECLARE_CONCRETE_INSTRUCTION(SubI, "sub-i")
   1336   DECLARE_HYDROGEN_ACCESSOR(Sub)
   1337 };
   1338 
   1339 
   1340 class LConstantI FINAL : public LTemplateInstruction<1, 0, 0> {
   1341  public:
   1342   DECLARE_CONCRETE_INSTRUCTION(ConstantI, "constant-i")
   1343   DECLARE_HYDROGEN_ACCESSOR(Constant)
   1344 
   1345   int32_t value() const { return hydrogen()->Integer32Value(); }
   1346 };
   1347 
   1348 
   1349 class LConstantS FINAL : public LTemplateInstruction<1, 0, 0> {
   1350  public:
   1351   DECLARE_CONCRETE_INSTRUCTION(ConstantS, "constant-s")
   1352   DECLARE_HYDROGEN_ACCESSOR(Constant)
   1353 
   1354   Smi* value() const { return Smi::FromInt(hydrogen()->Integer32Value()); }
   1355 };
   1356 
   1357 
   1358 class LConstantD FINAL : public LTemplateInstruction<1, 0, 1> {
   1359  public:
   1360   DECLARE_CONCRETE_INSTRUCTION(ConstantD, "constant-d")
   1361   DECLARE_HYDROGEN_ACCESSOR(Constant)
   1362 
   1363   double value() const { return hydrogen()->DoubleValue(); }
   1364 };
   1365 
   1366 
   1367 class LConstantE FINAL : public LTemplateInstruction<1, 0, 0> {
   1368  public:
   1369   DECLARE_CONCRETE_INSTRUCTION(ConstantE, "constant-e")
   1370   DECLARE_HYDROGEN_ACCESSOR(Constant)
   1371 
   1372   ExternalReference value() const {
   1373     return hydrogen()->ExternalReferenceValue();
   1374   }
   1375 };
   1376 
   1377 
   1378 class LConstantT FINAL : public LTemplateInstruction<1, 0, 0> {
   1379  public:
   1380   DECLARE_CONCRETE_INSTRUCTION(ConstantT, "constant-t")
   1381   DECLARE_HYDROGEN_ACCESSOR(Constant)
   1382 
   1383   Handle<Object> value(Isolate* isolate) const {
   1384     return hydrogen()->handle(isolate);
   1385   }
   1386 };
   1387 
   1388 
   1389 class LBranch FINAL : public LControlInstruction<1, 1> {
   1390  public:
   1391   LBranch(LOperand* value, LOperand* temp) {
   1392     inputs_[0] = value;
   1393     temps_[0] = temp;
   1394   }
   1395 
   1396   LOperand* value() { return inputs_[0]; }
   1397   LOperand* temp() { return temps_[0]; }
   1398 
   1399   DECLARE_CONCRETE_INSTRUCTION(Branch, "branch")
   1400   DECLARE_HYDROGEN_ACCESSOR(Branch)
   1401 
   1402   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1403 };
   1404 
   1405 
   1406 class LCmpMapAndBranch FINAL : public LControlInstruction<1, 0> {
   1407  public:
   1408   explicit LCmpMapAndBranch(LOperand* value) {
   1409     inputs_[0] = value;
   1410   }
   1411 
   1412   LOperand* value() { return inputs_[0]; }
   1413 
   1414   DECLARE_CONCRETE_INSTRUCTION(CmpMapAndBranch, "cmp-map-and-branch")
   1415   DECLARE_HYDROGEN_ACCESSOR(CompareMap)
   1416 
   1417   Handle<Map> map() const { return hydrogen()->map().handle(); }
   1418 };
   1419 
   1420 
   1421 class LMapEnumLength FINAL : public LTemplateInstruction<1, 1, 0> {
   1422  public:
   1423   explicit LMapEnumLength(LOperand* value) {
   1424     inputs_[0] = value;
   1425   }
   1426 
   1427   LOperand* value() { return inputs_[0]; }
   1428 
   1429   DECLARE_CONCRETE_INSTRUCTION(MapEnumLength, "map-enum-length")
   1430 };
   1431 
   1432 
   1433 class LDateField FINAL : public LTemplateInstruction<1, 1, 1> {
   1434  public:
   1435   LDateField(LOperand* date, LOperand* temp, Smi* index)
   1436       : index_(index) {
   1437     inputs_[0] = date;
   1438     temps_[0] = temp;
   1439   }
   1440 
   1441   LOperand* date() { return inputs_[0]; }
   1442   LOperand* temp() { return temps_[0]; }
   1443 
   1444   DECLARE_CONCRETE_INSTRUCTION(DateField, "date-field")
   1445   DECLARE_HYDROGEN_ACCESSOR(DateField)
   1446 
   1447   Smi* index() const { return index_; }
   1448 
   1449  private:
   1450   Smi* index_;
   1451 };
   1452 
   1453 
   1454 class LSeqStringGetChar FINAL : public LTemplateInstruction<1, 2, 0> {
   1455  public:
   1456   LSeqStringGetChar(LOperand* string, LOperand* index) {
   1457     inputs_[0] = string;
   1458     inputs_[1] = index;
   1459   }
   1460 
   1461   LOperand* string() const { return inputs_[0]; }
   1462   LOperand* index() const { return inputs_[1]; }
   1463 
   1464   DECLARE_CONCRETE_INSTRUCTION(SeqStringGetChar, "seq-string-get-char")
   1465   DECLARE_HYDROGEN_ACCESSOR(SeqStringGetChar)
   1466 };
   1467 
   1468 
   1469 class LSeqStringSetChar FINAL : public LTemplateInstruction<1, 4, 0> {
   1470  public:
   1471   LSeqStringSetChar(LOperand* context,
   1472                     LOperand* string,
   1473                     LOperand* index,
   1474                     LOperand* value) {
   1475     inputs_[0] = context;
   1476     inputs_[1] = string;
   1477     inputs_[2] = index;
   1478     inputs_[3] = value;
   1479   }
   1480 
   1481   LOperand* string() { return inputs_[1]; }
   1482   LOperand* index() { return inputs_[2]; }
   1483   LOperand* value() { return inputs_[3]; }
   1484 
   1485   DECLARE_CONCRETE_INSTRUCTION(SeqStringSetChar, "seq-string-set-char")
   1486   DECLARE_HYDROGEN_ACCESSOR(SeqStringSetChar)
   1487 };
   1488 
   1489 
   1490 class LAddI FINAL : public LTemplateInstruction<1, 2, 0> {
   1491  public:
   1492   LAddI(LOperand* left, LOperand* right) {
   1493     inputs_[0] = left;
   1494     inputs_[1] = right;
   1495   }
   1496 
   1497   LOperand* left() { return inputs_[0]; }
   1498   LOperand* right() { return inputs_[1]; }
   1499 
   1500   static bool UseLea(HAdd* add) {
   1501     return !add->CheckFlag(HValue::kCanOverflow) &&
   1502         add->BetterLeftOperand()->UseCount() > 1;
   1503   }
   1504 
   1505   DECLARE_CONCRETE_INSTRUCTION(AddI, "add-i")
   1506   DECLARE_HYDROGEN_ACCESSOR(Add)
   1507 };
   1508 
   1509 
   1510 class LMathMinMax FINAL : public LTemplateInstruction<1, 2, 1> {
   1511  public:
   1512   LMathMinMax(LOperand* left, LOperand* right, LOperand* temp) {
   1513     inputs_[0] = left;
   1514     inputs_[1] = right;
   1515     temps_[0] = temp;
   1516   }
   1517 
   1518   LOperand* left() { return inputs_[0]; }
   1519   LOperand* right() { return inputs_[1]; }
   1520   LOperand* temp() { return temps_[0]; }
   1521 
   1522   DECLARE_CONCRETE_INSTRUCTION(MathMinMax, "math-min-max")
   1523   DECLARE_HYDROGEN_ACCESSOR(MathMinMax)
   1524 };
   1525 
   1526 
   1527 class LPower FINAL : public LTemplateInstruction<1, 2, 0> {
   1528  public:
   1529   LPower(LOperand* left, LOperand* right) {
   1530     inputs_[0] = left;
   1531     inputs_[1] = right;
   1532   }
   1533 
   1534   LOperand* left() { return inputs_[0]; }
   1535   LOperand* right() { return inputs_[1]; }
   1536 
   1537   DECLARE_CONCRETE_INSTRUCTION(Power, "power")
   1538   DECLARE_HYDROGEN_ACCESSOR(Power)
   1539 };
   1540 
   1541 
   1542 class LArithmeticD FINAL : public LTemplateInstruction<1, 2, 0> {
   1543  public:
   1544   LArithmeticD(Token::Value op, LOperand* left, LOperand* right)
   1545       : op_(op) {
   1546     inputs_[0] = left;
   1547     inputs_[1] = right;
   1548   }
   1549 
   1550   LOperand* left() { return inputs_[0]; }
   1551   LOperand* right() { return inputs_[1]; }
   1552 
   1553   Token::Value op() const { return op_; }
   1554 
   1555   virtual Opcode opcode() const OVERRIDE {
   1556     return LInstruction::kArithmeticD;
   1557   }
   1558   virtual void CompileToNative(LCodeGen* generator) OVERRIDE;
   1559   virtual const char* Mnemonic() const OVERRIDE;
   1560 
   1561  private:
   1562   Token::Value op_;
   1563 };
   1564 
   1565 
   1566 class LArithmeticT FINAL : public LTemplateInstruction<1, 3, 0> {
   1567  public:
   1568   LArithmeticT(Token::Value op,
   1569                LOperand* context,
   1570                LOperand* left,
   1571                LOperand* right)
   1572       : op_(op) {
   1573     inputs_[0] = context;
   1574     inputs_[1] = left;
   1575     inputs_[2] = right;
   1576   }
   1577 
   1578   LOperand* context() { return inputs_[0]; }
   1579   LOperand* left() { return inputs_[1]; }
   1580   LOperand* right() { return inputs_[2]; }
   1581 
   1582   virtual Opcode opcode() const OVERRIDE {
   1583     return LInstruction::kArithmeticT;
   1584   }
   1585   virtual void CompileToNative(LCodeGen* generator) OVERRIDE;
   1586   virtual const char* Mnemonic() const OVERRIDE;
   1587 
   1588   Token::Value op() const { return op_; }
   1589 
   1590  private:
   1591   Token::Value op_;
   1592 };
   1593 
   1594 
   1595 class LReturn FINAL : public LTemplateInstruction<0, 3, 0> {
   1596  public:
   1597   explicit LReturn(LOperand* value,
   1598                    LOperand* context,
   1599                    LOperand* parameter_count) {
   1600     inputs_[0] = value;
   1601     inputs_[1] = context;
   1602     inputs_[2] = parameter_count;
   1603   }
   1604 
   1605   bool has_constant_parameter_count() {
   1606     return parameter_count()->IsConstantOperand();
   1607   }
   1608   LConstantOperand* constant_parameter_count() {
   1609     DCHECK(has_constant_parameter_count());
   1610     return LConstantOperand::cast(parameter_count());
   1611   }
   1612   LOperand* parameter_count() { return inputs_[2]; }
   1613 
   1614   DECLARE_CONCRETE_INSTRUCTION(Return, "return")
   1615   DECLARE_HYDROGEN_ACCESSOR(Return)
   1616 };
   1617 
   1618 
   1619 class LLoadNamedField FINAL : public LTemplateInstruction<1, 1, 0> {
   1620  public:
   1621   explicit LLoadNamedField(LOperand* object) {
   1622     inputs_[0] = object;
   1623   }
   1624 
   1625   LOperand* object() { return inputs_[0]; }
   1626 
   1627   DECLARE_CONCRETE_INSTRUCTION(LoadNamedField, "load-named-field")
   1628   DECLARE_HYDROGEN_ACCESSOR(LoadNamedField)
   1629 };
   1630 
   1631 
   1632 class LLoadNamedGeneric FINAL : public LTemplateInstruction<1, 2, 1> {
   1633  public:
   1634   LLoadNamedGeneric(LOperand* context, LOperand* object, LOperand* vector) {
   1635     inputs_[0] = context;
   1636     inputs_[1] = object;
   1637     temps_[0] = vector;
   1638   }
   1639 
   1640   LOperand* context() { return inputs_[0]; }
   1641   LOperand* object() { return inputs_[1]; }
   1642   LOperand* temp_vector() { return temps_[0]; }
   1643 
   1644   DECLARE_CONCRETE_INSTRUCTION(LoadNamedGeneric, "load-named-generic")
   1645   DECLARE_HYDROGEN_ACCESSOR(LoadNamedGeneric)
   1646 
   1647   Handle<Object> name() const { return hydrogen()->name(); }
   1648 };
   1649 
   1650 
   1651 class LLoadFunctionPrototype FINAL : public LTemplateInstruction<1, 1, 1> {
   1652  public:
   1653   LLoadFunctionPrototype(LOperand* function, LOperand* temp) {
   1654     inputs_[0] = function;
   1655     temps_[0] = temp;
   1656   }
   1657 
   1658   LOperand* function() { return inputs_[0]; }
   1659   LOperand* temp() { return temps_[0]; }
   1660 
   1661   DECLARE_CONCRETE_INSTRUCTION(LoadFunctionPrototype, "load-function-prototype")
   1662   DECLARE_HYDROGEN_ACCESSOR(LoadFunctionPrototype)
   1663 };
   1664 
   1665 
   1666 class LLoadRoot FINAL : public LTemplateInstruction<1, 0, 0> {
   1667  public:
   1668   DECLARE_CONCRETE_INSTRUCTION(LoadRoot, "load-root")
   1669   DECLARE_HYDROGEN_ACCESSOR(LoadRoot)
   1670 
   1671   Heap::RootListIndex index() const { return hydrogen()->index(); }
   1672 };
   1673 
   1674 
   1675 class LLoadKeyed FINAL : public LTemplateInstruction<1, 2, 0> {
   1676  public:
   1677   LLoadKeyed(LOperand* elements, LOperand* key) {
   1678     inputs_[0] = elements;
   1679     inputs_[1] = key;
   1680   }
   1681   LOperand* elements() { return inputs_[0]; }
   1682   LOperand* key() { return inputs_[1]; }
   1683   ElementsKind elements_kind() const {
   1684     return hydrogen()->elements_kind();
   1685   }
   1686   bool is_external() const {
   1687     return hydrogen()->is_external();
   1688   }
   1689   bool is_fixed_typed_array() const {
   1690     return hydrogen()->is_fixed_typed_array();
   1691   }
   1692   bool is_typed_elements() const {
   1693     return is_external() || is_fixed_typed_array();
   1694   }
   1695 
   1696   DECLARE_CONCRETE_INSTRUCTION(LoadKeyed, "load-keyed")
   1697   DECLARE_HYDROGEN_ACCESSOR(LoadKeyed)
   1698 
   1699   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1700   uint32_t base_offset() const { return hydrogen()->base_offset(); }
   1701   bool key_is_smi() {
   1702     return hydrogen()->key()->representation().IsTagged();
   1703   }
   1704 };
   1705 
   1706 
   1707 inline static bool ExternalArrayOpRequiresTemp(
   1708     Representation key_representation,
   1709     ElementsKind elements_kind) {
   1710   // Operations that require the key to be divided by two to be converted into
   1711   // an index cannot fold the scale operation into a load and need an extra
   1712   // temp register to do the work.
   1713   return key_representation.IsSmi() &&
   1714       (elements_kind == EXTERNAL_INT8_ELEMENTS ||
   1715        elements_kind == EXTERNAL_UINT8_ELEMENTS ||
   1716        elements_kind == EXTERNAL_UINT8_CLAMPED_ELEMENTS ||
   1717        elements_kind == UINT8_ELEMENTS ||
   1718        elements_kind == INT8_ELEMENTS ||
   1719        elements_kind == UINT8_CLAMPED_ELEMENTS);
   1720 }
   1721 
   1722 
   1723 class LLoadKeyedGeneric FINAL : public LTemplateInstruction<1, 3, 1> {
   1724  public:
   1725   LLoadKeyedGeneric(LOperand* context, LOperand* obj, LOperand* key,
   1726                     LOperand* vector) {
   1727     inputs_[0] = context;
   1728     inputs_[1] = obj;
   1729     inputs_[2] = key;
   1730     temps_[0] = vector;
   1731   }
   1732 
   1733   LOperand* context() { return inputs_[0]; }
   1734   LOperand* object() { return inputs_[1]; }
   1735   LOperand* key() { return inputs_[2]; }
   1736   LOperand* temp_vector() { return temps_[0]; }
   1737 
   1738   DECLARE_CONCRETE_INSTRUCTION(LoadKeyedGeneric, "load-keyed-generic")
   1739   DECLARE_HYDROGEN_ACCESSOR(LoadKeyedGeneric)
   1740 };
   1741 
   1742 
   1743 class LLoadGlobalCell FINAL : public LTemplateInstruction<1, 0, 0> {
   1744  public:
   1745   DECLARE_CONCRETE_INSTRUCTION(LoadGlobalCell, "load-global-cell")
   1746   DECLARE_HYDROGEN_ACCESSOR(LoadGlobalCell)
   1747 };
   1748 
   1749 
   1750 class LLoadGlobalGeneric FINAL : public LTemplateInstruction<1, 2, 1> {
   1751  public:
   1752   LLoadGlobalGeneric(LOperand* context, LOperand* global_object,
   1753                      LOperand* vector) {
   1754     inputs_[0] = context;
   1755     inputs_[1] = global_object;
   1756     temps_[0] = vector;
   1757   }
   1758 
   1759   LOperand* context() { return inputs_[0]; }
   1760   LOperand* global_object() { return inputs_[1]; }
   1761   LOperand* temp_vector() { return temps_[0]; }
   1762 
   1763   DECLARE_CONCRETE_INSTRUCTION(LoadGlobalGeneric, "load-global-generic")
   1764   DECLARE_HYDROGEN_ACCESSOR(LoadGlobalGeneric)
   1765 
   1766   Handle<Object> name() const { return hydrogen()->name(); }
   1767   bool for_typeof() const { return hydrogen()->for_typeof(); }
   1768 };
   1769 
   1770 
   1771 class LStoreGlobalCell FINAL : public LTemplateInstruction<0, 1, 0> {
   1772  public:
   1773   explicit LStoreGlobalCell(LOperand* value) {
   1774     inputs_[0] = value;
   1775   }
   1776 
   1777   LOperand* value() { return inputs_[0]; }
   1778 
   1779   DECLARE_CONCRETE_INSTRUCTION(StoreGlobalCell, "store-global-cell")
   1780   DECLARE_HYDROGEN_ACCESSOR(StoreGlobalCell)
   1781 };
   1782 
   1783 
   1784 class LLoadContextSlot FINAL : public LTemplateInstruction<1, 1, 0> {
   1785  public:
   1786   explicit LLoadContextSlot(LOperand* context) {
   1787     inputs_[0] = context;
   1788   }
   1789 
   1790   LOperand* context() { return inputs_[0]; }
   1791 
   1792   DECLARE_CONCRETE_INSTRUCTION(LoadContextSlot, "load-context-slot")
   1793   DECLARE_HYDROGEN_ACCESSOR(LoadContextSlot)
   1794 
   1795   int slot_index() { return hydrogen()->slot_index(); }
   1796 
   1797   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1798 };
   1799 
   1800 
   1801 class LStoreContextSlot FINAL : public LTemplateInstruction<0, 2, 1> {
   1802  public:
   1803   LStoreContextSlot(LOperand* context, LOperand* value, LOperand* temp) {
   1804     inputs_[0] = context;
   1805     inputs_[1] = value;
   1806     temps_[0] = temp;
   1807   }
   1808 
   1809   LOperand* context() { return inputs_[0]; }
   1810   LOperand* value() { return inputs_[1]; }
   1811   LOperand* temp() { return temps_[0]; }
   1812 
   1813   DECLARE_CONCRETE_INSTRUCTION(StoreContextSlot, "store-context-slot")
   1814   DECLARE_HYDROGEN_ACCESSOR(StoreContextSlot)
   1815 
   1816   int slot_index() { return hydrogen()->slot_index(); }
   1817 
   1818   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1819 };
   1820 
   1821 
   1822 class LPushArgument FINAL : public LTemplateInstruction<0, 1, 0> {
   1823  public:
   1824   explicit LPushArgument(LOperand* value) {
   1825     inputs_[0] = value;
   1826   }
   1827 
   1828   LOperand* value() { return inputs_[0]; }
   1829 
   1830   DECLARE_CONCRETE_INSTRUCTION(PushArgument, "push-argument")
   1831 };
   1832 
   1833 
   1834 class LDrop FINAL : public LTemplateInstruction<0, 0, 0> {
   1835  public:
   1836   explicit LDrop(int count) : count_(count) { }
   1837 
   1838   int count() const { return count_; }
   1839 
   1840   DECLARE_CONCRETE_INSTRUCTION(Drop, "drop")
   1841 
   1842  private:
   1843   int count_;
   1844 };
   1845 
   1846 
   1847 class LStoreCodeEntry FINAL: public LTemplateInstruction<0, 2, 0> {
   1848  public:
   1849   LStoreCodeEntry(LOperand* function, LOperand* code_object) {
   1850     inputs_[0] = function;
   1851     inputs_[1] = code_object;
   1852   }
   1853 
   1854   LOperand* function() { return inputs_[0]; }
   1855   LOperand* code_object() { return inputs_[1]; }
   1856 
   1857   virtual void PrintDataTo(StringStream* stream);
   1858 
   1859   DECLARE_CONCRETE_INSTRUCTION(StoreCodeEntry, "store-code-entry")
   1860   DECLARE_HYDROGEN_ACCESSOR(StoreCodeEntry)
   1861 };
   1862 
   1863 
   1864 class LInnerAllocatedObject FINAL: public LTemplateInstruction<1, 2, 0> {
   1865  public:
   1866   LInnerAllocatedObject(LOperand* base_object, LOperand* offset) {
   1867     inputs_[0] = base_object;
   1868     inputs_[1] = offset;
   1869   }
   1870 
   1871   LOperand* base_object() const { return inputs_[0]; }
   1872   LOperand* offset() const { return inputs_[1]; }
   1873 
   1874   virtual void PrintDataTo(StringStream* stream);
   1875 
   1876   DECLARE_CONCRETE_INSTRUCTION(InnerAllocatedObject, "inner-allocated-object")
   1877 };
   1878 
   1879 
   1880 class LThisFunction FINAL : public LTemplateInstruction<1, 0, 0> {
   1881  public:
   1882   DECLARE_CONCRETE_INSTRUCTION(ThisFunction, "this-function")
   1883   DECLARE_HYDROGEN_ACCESSOR(ThisFunction)
   1884 };
   1885 
   1886 
   1887 class LContext FINAL : public LTemplateInstruction<1, 0, 0> {
   1888  public:
   1889   DECLARE_CONCRETE_INSTRUCTION(Context, "context")
   1890   DECLARE_HYDROGEN_ACCESSOR(Context)
   1891 };
   1892 
   1893 
   1894 class LDeclareGlobals FINAL : public LTemplateInstruction<0, 1, 0> {
   1895  public:
   1896   explicit LDeclareGlobals(LOperand* context) {
   1897     inputs_[0] = context;
   1898   }
   1899 
   1900   LOperand* context() { return inputs_[0]; }
   1901 
   1902   DECLARE_CONCRETE_INSTRUCTION(DeclareGlobals, "declare-globals")
   1903   DECLARE_HYDROGEN_ACCESSOR(DeclareGlobals)
   1904 };
   1905 
   1906 
   1907 class LCallJSFunction FINAL : public LTemplateInstruction<1, 1, 0> {
   1908  public:
   1909   explicit LCallJSFunction(LOperand* function) {
   1910     inputs_[0] = function;
   1911   }
   1912 
   1913   LOperand* function() { return inputs_[0]; }
   1914 
   1915   DECLARE_CONCRETE_INSTRUCTION(CallJSFunction, "call-js-function")
   1916   DECLARE_HYDROGEN_ACCESSOR(CallJSFunction)
   1917 
   1918   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1919 
   1920   int arity() const { return hydrogen()->argument_count() - 1; }
   1921 };
   1922 
   1923 
   1924 class LCallWithDescriptor FINAL : public LTemplateResultInstruction<1> {
   1925  public:
   1926   LCallWithDescriptor(CallInterfaceDescriptor descriptor,
   1927                       const ZoneList<LOperand*>& operands, Zone* zone)
   1928       : inputs_(descriptor.GetRegisterParameterCount() + 1, zone) {
   1929     DCHECK(descriptor.GetRegisterParameterCount() + 1 == operands.length());
   1930     inputs_.AddAll(operands, zone);
   1931   }
   1932 
   1933   LOperand* target() const { return inputs_[0]; }
   1934 
   1935   DECLARE_HYDROGEN_ACCESSOR(CallWithDescriptor)
   1936 
   1937  private:
   1938   DECLARE_CONCRETE_INSTRUCTION(CallWithDescriptor, "call-with-descriptor")
   1939 
   1940   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1941 
   1942   int arity() const { return hydrogen()->argument_count() - 1; }
   1943 
   1944   ZoneList<LOperand*> inputs_;
   1945 
   1946   // Iterator support.
   1947   virtual int InputCount() FINAL OVERRIDE { return inputs_.length(); }
   1948   virtual LOperand* InputAt(int i) FINAL OVERRIDE { return inputs_[i]; }
   1949 
   1950   virtual int TempCount() FINAL OVERRIDE { return 0; }
   1951   virtual LOperand* TempAt(int i) FINAL OVERRIDE { return NULL; }
   1952 };
   1953 
   1954 
   1955 class LInvokeFunction FINAL : public LTemplateInstruction<1, 2, 0> {
   1956  public:
   1957   LInvokeFunction(LOperand* context, LOperand* function) {
   1958     inputs_[0] = context;
   1959     inputs_[1] = function;
   1960   }
   1961 
   1962   LOperand* context() { return inputs_[0]; }
   1963   LOperand* function() { return inputs_[1]; }
   1964 
   1965   DECLARE_CONCRETE_INSTRUCTION(InvokeFunction, "invoke-function")
   1966   DECLARE_HYDROGEN_ACCESSOR(InvokeFunction)
   1967 
   1968   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   1969 
   1970   int arity() const { return hydrogen()->argument_count() - 1; }
   1971 };
   1972 
   1973 
   1974 class LCallFunction FINAL : public LTemplateInstruction<1, 2, 0> {
   1975  public:
   1976   explicit LCallFunction(LOperand* context, LOperand* function) {
   1977     inputs_[0] = context;
   1978     inputs_[1] = function;
   1979   }
   1980 
   1981   LOperand* context() { return inputs_[0]; }
   1982   LOperand* function() { return inputs_[1]; }
   1983 
   1984   DECLARE_CONCRETE_INSTRUCTION(CallFunction, "call-function")
   1985   DECLARE_HYDROGEN_ACCESSOR(CallFunction)
   1986 
   1987   int arity() const { return hydrogen()->argument_count() - 1; }
   1988 };
   1989 
   1990 
   1991 class LCallNew FINAL : public LTemplateInstruction<1, 2, 0> {
   1992  public:
   1993   LCallNew(LOperand* context, LOperand* constructor) {
   1994     inputs_[0] = context;
   1995     inputs_[1] = constructor;
   1996   }
   1997 
   1998   LOperand* context() { return inputs_[0]; }
   1999   LOperand* constructor() { return inputs_[1]; }
   2000 
   2001   DECLARE_CONCRETE_INSTRUCTION(CallNew, "call-new")
   2002   DECLARE_HYDROGEN_ACCESSOR(CallNew)
   2003 
   2004   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2005 
   2006   int arity() const { return hydrogen()->argument_count() - 1; }
   2007 };
   2008 
   2009 
   2010 class LCallNewArray FINAL : public LTemplateInstruction<1, 2, 0> {
   2011  public:
   2012   LCallNewArray(LOperand* context, LOperand* constructor) {
   2013     inputs_[0] = context;
   2014     inputs_[1] = constructor;
   2015   }
   2016 
   2017   LOperand* context() { return inputs_[0]; }
   2018   LOperand* constructor() { return inputs_[1]; }
   2019 
   2020   DECLARE_CONCRETE_INSTRUCTION(CallNewArray, "call-new-array")
   2021   DECLARE_HYDROGEN_ACCESSOR(CallNewArray)
   2022 
   2023   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2024 
   2025   int arity() const { return hydrogen()->argument_count() - 1; }
   2026 };
   2027 
   2028 
   2029 class LCallRuntime FINAL : public LTemplateInstruction<1, 1, 0> {
   2030  public:
   2031   explicit LCallRuntime(LOperand* context) {
   2032     inputs_[0] = context;
   2033   }
   2034 
   2035   LOperand* context() { return inputs_[0]; }
   2036 
   2037   DECLARE_CONCRETE_INSTRUCTION(CallRuntime, "call-runtime")
   2038   DECLARE_HYDROGEN_ACCESSOR(CallRuntime)
   2039 
   2040   virtual bool ClobbersDoubleRegisters(Isolate* isolate) const OVERRIDE {
   2041     return save_doubles() == kDontSaveFPRegs;
   2042   }
   2043 
   2044   const Runtime::Function* function() const { return hydrogen()->function(); }
   2045   int arity() const { return hydrogen()->argument_count(); }
   2046   SaveFPRegsMode save_doubles() const { return hydrogen()->save_doubles(); }
   2047 };
   2048 
   2049 
   2050 class LInteger32ToDouble FINAL : public LTemplateInstruction<1, 1, 0> {
   2051  public:
   2052   explicit LInteger32ToDouble(LOperand* value) {
   2053     inputs_[0] = value;
   2054   }
   2055 
   2056   LOperand* value() { return inputs_[0]; }
   2057 
   2058   DECLARE_CONCRETE_INSTRUCTION(Integer32ToDouble, "int32-to-double")
   2059 };
   2060 
   2061 
   2062 class LUint32ToDouble FINAL : public LTemplateInstruction<1, 1, 1> {
   2063  public:
   2064   explicit LUint32ToDouble(LOperand* value) {
   2065     inputs_[0] = value;
   2066   }
   2067 
   2068   LOperand* value() { return inputs_[0]; }
   2069 
   2070   DECLARE_CONCRETE_INSTRUCTION(Uint32ToDouble, "uint32-to-double")
   2071 };
   2072 
   2073 
   2074 class LNumberTagI FINAL : public LTemplateInstruction<1, 1, 1> {
   2075  public:
   2076   LNumberTagI(LOperand* value, LOperand* temp) {
   2077     inputs_[0] = value;
   2078     temps_[0] = temp;
   2079   }
   2080 
   2081   LOperand* value() { return inputs_[0]; }
   2082   LOperand* temp() { return temps_[0]; }
   2083 
   2084   DECLARE_CONCRETE_INSTRUCTION(NumberTagI, "number-tag-i")
   2085 };
   2086 
   2087 
   2088 class LNumberTagU FINAL : public LTemplateInstruction<1, 1, 1> {
   2089  public:
   2090   LNumberTagU(LOperand* value, LOperand* temp) {
   2091     inputs_[0] = value;
   2092     temps_[0] = temp;
   2093   }
   2094 
   2095   LOperand* value() { return inputs_[0]; }
   2096   LOperand* temp() { return temps_[0]; }
   2097 
   2098   DECLARE_CONCRETE_INSTRUCTION(NumberTagU, "number-tag-u")
   2099 };
   2100 
   2101 
   2102 class LNumberTagD FINAL : public LTemplateInstruction<1, 1, 1> {
   2103  public:
   2104   LNumberTagD(LOperand* value, LOperand* temp) {
   2105     inputs_[0] = value;
   2106     temps_[0] = temp;
   2107   }
   2108 
   2109   LOperand* value() { return inputs_[0]; }
   2110   LOperand* temp() { return temps_[0]; }
   2111 
   2112   DECLARE_CONCRETE_INSTRUCTION(NumberTagD, "number-tag-d")
   2113   DECLARE_HYDROGEN_ACCESSOR(Change)
   2114 };
   2115 
   2116 
   2117 // Sometimes truncating conversion from a tagged value to an int32.
   2118 class LDoubleToI FINAL : public LTemplateInstruction<1, 1, 0> {
   2119  public:
   2120   explicit LDoubleToI(LOperand* value) {
   2121     inputs_[0] = value;
   2122   }
   2123 
   2124   LOperand* value() { return inputs_[0]; }
   2125 
   2126   DECLARE_CONCRETE_INSTRUCTION(DoubleToI, "double-to-i")
   2127   DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
   2128 
   2129   bool truncating() { return hydrogen()->CanTruncateToInt32(); }
   2130 };
   2131 
   2132 
   2133 class LDoubleToSmi FINAL : public LTemplateInstruction<1, 1, 0> {
   2134  public:
   2135   explicit LDoubleToSmi(LOperand* value) {
   2136     inputs_[0] = value;
   2137   }
   2138 
   2139   LOperand* value() { return inputs_[0]; }
   2140 
   2141   DECLARE_CONCRETE_INSTRUCTION(DoubleToSmi, "double-to-smi")
   2142   DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
   2143 };
   2144 
   2145 
   2146 // Truncating conversion from a tagged value to an int32.
   2147 class LTaggedToI FINAL : public LTemplateInstruction<1, 1, 0> {
   2148  public:
   2149   explicit LTaggedToI(LOperand* value) {
   2150     inputs_[0] = value;
   2151   }
   2152 
   2153   LOperand* value() { return inputs_[0]; }
   2154 
   2155   DECLARE_CONCRETE_INSTRUCTION(TaggedToI, "tagged-to-i")
   2156   DECLARE_HYDROGEN_ACCESSOR(Change)
   2157 
   2158   bool truncating() { return hydrogen()->CanTruncateToInt32(); }
   2159 };
   2160 
   2161 
   2162 class LSmiTag FINAL : public LTemplateInstruction<1, 1, 0> {
   2163  public:
   2164   explicit LSmiTag(LOperand* value) {
   2165     inputs_[0] = value;
   2166   }
   2167 
   2168   LOperand* value() { return inputs_[0]; }
   2169 
   2170   DECLARE_CONCRETE_INSTRUCTION(SmiTag, "smi-tag")
   2171   DECLARE_HYDROGEN_ACCESSOR(Change)
   2172 };
   2173 
   2174 
   2175 class LNumberUntagD FINAL : public LTemplateInstruction<1, 1, 1> {
   2176  public:
   2177   explicit LNumberUntagD(LOperand* value, LOperand* temp) {
   2178     inputs_[0] = value;
   2179     temps_[0] = temp;
   2180   }
   2181 
   2182   LOperand* value() { return inputs_[0]; }
   2183   LOperand* temp() { return temps_[0]; }
   2184 
   2185   DECLARE_CONCRETE_INSTRUCTION(NumberUntagD, "double-untag")
   2186   DECLARE_HYDROGEN_ACCESSOR(Change);
   2187 };
   2188 
   2189 
   2190 class LSmiUntag FINAL : public LTemplateInstruction<1, 1, 0> {
   2191  public:
   2192   LSmiUntag(LOperand* value, bool needs_check)
   2193       : needs_check_(needs_check) {
   2194     inputs_[0] = value;
   2195   }
   2196 
   2197   LOperand* value() { return inputs_[0]; }
   2198 
   2199   DECLARE_CONCRETE_INSTRUCTION(SmiUntag, "smi-untag")
   2200 
   2201   bool needs_check() const { return needs_check_; }
   2202 
   2203  private:
   2204   bool needs_check_;
   2205 };
   2206 
   2207 
   2208 class LStoreNamedField FINAL : public LTemplateInstruction<0, 2, 2> {
   2209  public:
   2210   LStoreNamedField(LOperand* obj,
   2211                    LOperand* val,
   2212                    LOperand* temp,
   2213                    LOperand* temp_map) {
   2214     inputs_[0] = obj;
   2215     inputs_[1] = val;
   2216     temps_[0] = temp;
   2217     temps_[1] = temp_map;
   2218   }
   2219 
   2220   LOperand* object() { return inputs_[0]; }
   2221   LOperand* value() { return inputs_[1]; }
   2222   LOperand* temp() { return temps_[0]; }
   2223   LOperand* temp_map() { return temps_[1]; }
   2224 
   2225   DECLARE_CONCRETE_INSTRUCTION(StoreNamedField, "store-named-field")
   2226   DECLARE_HYDROGEN_ACCESSOR(StoreNamedField)
   2227 
   2228   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2229 };
   2230 
   2231 
   2232 class LStoreNamedGeneric FINAL : public LTemplateInstruction<0, 3, 0> {
   2233  public:
   2234   LStoreNamedGeneric(LOperand* context, LOperand* object, LOperand* value) {
   2235     inputs_[0] = context;
   2236     inputs_[1] = object;
   2237     inputs_[2] = value;
   2238   }
   2239 
   2240   LOperand* context() { return inputs_[0]; }
   2241   LOperand* object() { return inputs_[1]; }
   2242   LOperand* value() { return inputs_[2]; }
   2243 
   2244   DECLARE_CONCRETE_INSTRUCTION(StoreNamedGeneric, "store-named-generic")
   2245   DECLARE_HYDROGEN_ACCESSOR(StoreNamedGeneric)
   2246 
   2247   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2248   Handle<Object> name() const { return hydrogen()->name(); }
   2249   StrictMode strict_mode() { return hydrogen()->strict_mode(); }
   2250 };
   2251 
   2252 
   2253 class LStoreKeyed FINAL : public LTemplateInstruction<0, 3, 0> {
   2254  public:
   2255   LStoreKeyed(LOperand* obj, LOperand* key, LOperand* val) {
   2256     inputs_[0] = obj;
   2257     inputs_[1] = key;
   2258     inputs_[2] = val;
   2259   }
   2260 
   2261   bool is_external() const { return hydrogen()->is_external(); }
   2262   bool is_fixed_typed_array() const {
   2263     return hydrogen()->is_fixed_typed_array();
   2264   }
   2265   bool is_typed_elements() const {
   2266     return is_external() || is_fixed_typed_array();
   2267   }
   2268   LOperand* elements() { return inputs_[0]; }
   2269   LOperand* key() { return inputs_[1]; }
   2270   LOperand* value() { return inputs_[2]; }
   2271   ElementsKind elements_kind() const {
   2272     return hydrogen()->elements_kind();
   2273   }
   2274 
   2275   DECLARE_CONCRETE_INSTRUCTION(StoreKeyed, "store-keyed")
   2276   DECLARE_HYDROGEN_ACCESSOR(StoreKeyed)
   2277 
   2278   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2279   uint32_t base_offset() const { return hydrogen()->base_offset(); }
   2280   bool NeedsCanonicalization() { return hydrogen()->NeedsCanonicalization(); }
   2281 };
   2282 
   2283 
   2284 class LStoreKeyedGeneric FINAL : public LTemplateInstruction<0, 4, 0> {
   2285  public:
   2286   LStoreKeyedGeneric(LOperand* context,
   2287                      LOperand* object,
   2288                      LOperand* key,
   2289                      LOperand* value) {
   2290     inputs_[0] = context;
   2291     inputs_[1] = object;
   2292     inputs_[2] = key;
   2293     inputs_[3] = value;
   2294   }
   2295 
   2296   LOperand* context() { return inputs_[0]; }
   2297   LOperand* object() { return inputs_[1]; }
   2298   LOperand* key() { return inputs_[2]; }
   2299   LOperand* value() { return inputs_[3]; }
   2300 
   2301   DECLARE_CONCRETE_INSTRUCTION(StoreKeyedGeneric, "store-keyed-generic")
   2302   DECLARE_HYDROGEN_ACCESSOR(StoreKeyedGeneric)
   2303 
   2304   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2305 
   2306   StrictMode strict_mode() { return hydrogen()->strict_mode(); }
   2307 };
   2308 
   2309 
   2310 class LTransitionElementsKind FINAL : public LTemplateInstruction<0, 2, 2> {
   2311  public:
   2312   LTransitionElementsKind(LOperand* object,
   2313                           LOperand* context,
   2314                           LOperand* new_map_temp,
   2315                           LOperand* temp) {
   2316     inputs_[0] = object;
   2317     inputs_[1] = context;
   2318     temps_[0] = new_map_temp;
   2319     temps_[1] = temp;
   2320   }
   2321 
   2322   LOperand* context() { return inputs_[1]; }
   2323   LOperand* object() { return inputs_[0]; }
   2324   LOperand* new_map_temp() { return temps_[0]; }
   2325   LOperand* temp() { return temps_[1]; }
   2326 
   2327   DECLARE_CONCRETE_INSTRUCTION(TransitionElementsKind,
   2328                                "transition-elements-kind")
   2329   DECLARE_HYDROGEN_ACCESSOR(TransitionElementsKind)
   2330 
   2331   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2332 
   2333   Handle<Map> original_map() { return hydrogen()->original_map().handle(); }
   2334   Handle<Map> transitioned_map() {
   2335     return hydrogen()->transitioned_map().handle();
   2336   }
   2337   ElementsKind from_kind() { return hydrogen()->from_kind(); }
   2338   ElementsKind to_kind() { return hydrogen()->to_kind(); }
   2339 };
   2340 
   2341 
   2342 class LTrapAllocationMemento FINAL  : public LTemplateInstruction<0, 1, 1> {
   2343  public:
   2344   LTrapAllocationMemento(LOperand* object,
   2345                          LOperand* temp) {
   2346     inputs_[0] = object;
   2347     temps_[0] = temp;
   2348   }
   2349 
   2350   LOperand* object() { return inputs_[0]; }
   2351   LOperand* temp() { return temps_[0]; }
   2352 
   2353   DECLARE_CONCRETE_INSTRUCTION(TrapAllocationMemento,
   2354                                "trap-allocation-memento")
   2355 };
   2356 
   2357 
   2358 class LStringAdd FINAL : public LTemplateInstruction<1, 3, 0> {
   2359  public:
   2360   LStringAdd(LOperand* context, LOperand* left, LOperand* right) {
   2361     inputs_[0] = context;
   2362     inputs_[1] = left;
   2363     inputs_[2] = right;
   2364   }
   2365 
   2366   LOperand* context() { return inputs_[0]; }
   2367   LOperand* left() { return inputs_[1]; }
   2368   LOperand* right() { return inputs_[2]; }
   2369 
   2370   DECLARE_CONCRETE_INSTRUCTION(StringAdd, "string-add")
   2371   DECLARE_HYDROGEN_ACCESSOR(StringAdd)
   2372 };
   2373 
   2374 
   2375 class LStringCharCodeAt FINAL : public LTemplateInstruction<1, 3, 0> {
   2376  public:
   2377   LStringCharCodeAt(LOperand* context, LOperand* string, LOperand* index) {
   2378     inputs_[0] = context;
   2379     inputs_[1] = string;
   2380     inputs_[2] = index;
   2381   }
   2382 
   2383   LOperand* context() { return inputs_[0]; }
   2384   LOperand* string() { return inputs_[1]; }
   2385   LOperand* index() { return inputs_[2]; }
   2386 
   2387   DECLARE_CONCRETE_INSTRUCTION(StringCharCodeAt, "string-char-code-at")
   2388   DECLARE_HYDROGEN_ACCESSOR(StringCharCodeAt)
   2389 };
   2390 
   2391 
   2392 class LStringCharFromCode FINAL : public LTemplateInstruction<1, 2, 0> {
   2393  public:
   2394   LStringCharFromCode(LOperand* context, LOperand* char_code) {
   2395     inputs_[0] = context;
   2396     inputs_[1] = char_code;
   2397   }
   2398 
   2399   LOperand* context() { return inputs_[0]; }
   2400   LOperand* char_code() { return inputs_[1]; }
   2401 
   2402   DECLARE_CONCRETE_INSTRUCTION(StringCharFromCode, "string-char-from-code")
   2403   DECLARE_HYDROGEN_ACCESSOR(StringCharFromCode)
   2404 };
   2405 
   2406 
   2407 class LCheckValue FINAL : public LTemplateInstruction<0, 1, 0> {
   2408  public:
   2409   explicit LCheckValue(LOperand* value) {
   2410     inputs_[0] = value;
   2411   }
   2412 
   2413   LOperand* value() { return inputs_[0]; }
   2414 
   2415   DECLARE_CONCRETE_INSTRUCTION(CheckValue, "check-value")
   2416   DECLARE_HYDROGEN_ACCESSOR(CheckValue)
   2417 };
   2418 
   2419 
   2420 class LCheckInstanceType FINAL : public LTemplateInstruction<0, 1, 1> {
   2421  public:
   2422   LCheckInstanceType(LOperand* value, LOperand* temp) {
   2423     inputs_[0] = value;
   2424     temps_[0] = temp;
   2425   }
   2426 
   2427   LOperand* value() { return inputs_[0]; }
   2428   LOperand* temp() { return temps_[0]; }
   2429 
   2430   DECLARE_CONCRETE_INSTRUCTION(CheckInstanceType, "check-instance-type")
   2431   DECLARE_HYDROGEN_ACCESSOR(CheckInstanceType)
   2432 };
   2433 
   2434 
   2435 class LCheckMaps FINAL : public LTemplateInstruction<0, 1, 0> {
   2436  public:
   2437   explicit LCheckMaps(LOperand* value = NULL) {
   2438     inputs_[0] = value;
   2439   }
   2440 
   2441   LOperand* value() { return inputs_[0]; }
   2442 
   2443   DECLARE_CONCRETE_INSTRUCTION(CheckMaps, "check-maps")
   2444   DECLARE_HYDROGEN_ACCESSOR(CheckMaps)
   2445 };
   2446 
   2447 
   2448 class LCheckSmi FINAL : public LTemplateInstruction<1, 1, 0> {
   2449  public:
   2450   explicit LCheckSmi(LOperand* value) {
   2451     inputs_[0] = value;
   2452   }
   2453 
   2454   LOperand* value() { return inputs_[0]; }
   2455 
   2456   DECLARE_CONCRETE_INSTRUCTION(CheckSmi, "check-smi")
   2457 };
   2458 
   2459 
   2460 class LClampDToUint8 FINAL : public LTemplateInstruction<1, 1, 0> {
   2461  public:
   2462   explicit LClampDToUint8(LOperand* value) {
   2463     inputs_[0] = value;
   2464   }
   2465 
   2466   LOperand* unclamped() { return inputs_[0]; }
   2467 
   2468   DECLARE_CONCRETE_INSTRUCTION(ClampDToUint8, "clamp-d-to-uint8")
   2469 };
   2470 
   2471 
   2472 class LClampIToUint8 FINAL : public LTemplateInstruction<1, 1, 0> {
   2473  public:
   2474   explicit LClampIToUint8(LOperand* value) {
   2475     inputs_[0] = value;
   2476   }
   2477 
   2478   LOperand* unclamped() { return inputs_[0]; }
   2479 
   2480   DECLARE_CONCRETE_INSTRUCTION(ClampIToUint8, "clamp-i-to-uint8")
   2481 };
   2482 
   2483 
   2484 // Truncating conversion from a tagged value to an int32.
   2485 class LClampTToUint8NoSSE2 FINAL : public LTemplateInstruction<1, 1, 3> {
   2486  public:
   2487   LClampTToUint8NoSSE2(LOperand* unclamped,
   2488                        LOperand* temp1,
   2489                        LOperand* temp2,
   2490                        LOperand* temp3) {
   2491     inputs_[0] = unclamped;
   2492     temps_[0] = temp1;
   2493     temps_[1] = temp2;
   2494     temps_[2] = temp3;
   2495   }
   2496 
   2497   LOperand* unclamped() { return inputs_[0]; }
   2498   LOperand* scratch() { return temps_[0]; }
   2499   LOperand* scratch2() { return temps_[1]; }
   2500   LOperand* scratch3() { return temps_[2]; }
   2501 
   2502   DECLARE_CONCRETE_INSTRUCTION(ClampTToUint8NoSSE2,
   2503                                "clamp-t-to-uint8-nosse2")
   2504   DECLARE_HYDROGEN_ACCESSOR(UnaryOperation)
   2505 };
   2506 
   2507 
   2508 class LCheckNonSmi FINAL : public LTemplateInstruction<0, 1, 0> {
   2509  public:
   2510   explicit LCheckNonSmi(LOperand* value) {
   2511     inputs_[0] = value;
   2512   }
   2513 
   2514   LOperand* value() { return inputs_[0]; }
   2515 
   2516   DECLARE_CONCRETE_INSTRUCTION(CheckNonSmi, "check-non-smi")
   2517   DECLARE_HYDROGEN_ACCESSOR(CheckHeapObject)
   2518 };
   2519 
   2520 
   2521 class LDoubleBits FINAL : public LTemplateInstruction<1, 1, 0> {
   2522  public:
   2523   explicit LDoubleBits(LOperand* value) {
   2524     inputs_[0] = value;
   2525   }
   2526 
   2527   LOperand* value() { return inputs_[0]; }
   2528 
   2529   DECLARE_CONCRETE_INSTRUCTION(DoubleBits, "double-bits")
   2530   DECLARE_HYDROGEN_ACCESSOR(DoubleBits)
   2531 };
   2532 
   2533 
   2534 class LConstructDouble FINAL : public LTemplateInstruction<1, 2, 0> {
   2535  public:
   2536   LConstructDouble(LOperand* hi, LOperand* lo) {
   2537     inputs_[0] = hi;
   2538     inputs_[1] = lo;
   2539   }
   2540 
   2541   LOperand* hi() { return inputs_[0]; }
   2542   LOperand* lo() { return inputs_[1]; }
   2543 
   2544   DECLARE_CONCRETE_INSTRUCTION(ConstructDouble, "construct-double")
   2545 };
   2546 
   2547 
   2548 class LAllocate FINAL : public LTemplateInstruction<1, 2, 1> {
   2549  public:
   2550   LAllocate(LOperand* context, LOperand* size, LOperand* temp) {
   2551     inputs_[0] = context;
   2552     inputs_[1] = size;
   2553     temps_[0] = temp;
   2554   }
   2555 
   2556   LOperand* context() { return inputs_[0]; }
   2557   LOperand* size() { return inputs_[1]; }
   2558   LOperand* temp() { return temps_[0]; }
   2559 
   2560   DECLARE_CONCRETE_INSTRUCTION(Allocate, "allocate")
   2561   DECLARE_HYDROGEN_ACCESSOR(Allocate)
   2562 };
   2563 
   2564 
   2565 class LRegExpLiteral FINAL : public LTemplateInstruction<1, 1, 0> {
   2566  public:
   2567   explicit LRegExpLiteral(LOperand* context) {
   2568     inputs_[0] = context;
   2569   }
   2570 
   2571   LOperand* context() { return inputs_[0]; }
   2572 
   2573   DECLARE_CONCRETE_INSTRUCTION(RegExpLiteral, "regexp-literal")
   2574   DECLARE_HYDROGEN_ACCESSOR(RegExpLiteral)
   2575 };
   2576 
   2577 
   2578 class LFunctionLiteral FINAL : public LTemplateInstruction<1, 1, 0> {
   2579  public:
   2580   explicit LFunctionLiteral(LOperand* context) {
   2581     inputs_[0] = context;
   2582   }
   2583 
   2584   LOperand* context() { return inputs_[0]; }
   2585 
   2586   DECLARE_CONCRETE_INSTRUCTION(FunctionLiteral, "function-literal")
   2587   DECLARE_HYDROGEN_ACCESSOR(FunctionLiteral)
   2588 };
   2589 
   2590 
   2591 class LToFastProperties FINAL : public LTemplateInstruction<1, 1, 0> {
   2592  public:
   2593   explicit LToFastProperties(LOperand* value) {
   2594     inputs_[0] = value;
   2595   }
   2596 
   2597   LOperand* value() { return inputs_[0]; }
   2598 
   2599   DECLARE_CONCRETE_INSTRUCTION(ToFastProperties, "to-fast-properties")
   2600   DECLARE_HYDROGEN_ACCESSOR(ToFastProperties)
   2601 };
   2602 
   2603 
   2604 class LTypeof FINAL : public LTemplateInstruction<1, 2, 0> {
   2605  public:
   2606   LTypeof(LOperand* context, LOperand* value) {
   2607     inputs_[0] = context;
   2608     inputs_[1] = value;
   2609   }
   2610 
   2611   LOperand* context() { return inputs_[0]; }
   2612   LOperand* value() { return inputs_[1]; }
   2613 
   2614   DECLARE_CONCRETE_INSTRUCTION(Typeof, "typeof")
   2615 };
   2616 
   2617 
   2618 class LTypeofIsAndBranch FINAL : public LControlInstruction<1, 0> {
   2619  public:
   2620   explicit LTypeofIsAndBranch(LOperand* value) {
   2621     inputs_[0] = value;
   2622   }
   2623 
   2624   LOperand* value() { return inputs_[0]; }
   2625 
   2626   DECLARE_CONCRETE_INSTRUCTION(TypeofIsAndBranch, "typeof-is-and-branch")
   2627   DECLARE_HYDROGEN_ACCESSOR(TypeofIsAndBranch)
   2628 
   2629   Handle<String> type_literal() { return hydrogen()->type_literal(); }
   2630 
   2631   virtual void PrintDataTo(StringStream* stream) OVERRIDE;
   2632 };
   2633 
   2634 
   2635 class LOsrEntry FINAL : public LTemplateInstruction<0, 0, 0> {
   2636  public:
   2637   virtual bool HasInterestingComment(LCodeGen* gen) const OVERRIDE {
   2638     return false;
   2639   }
   2640   DECLARE_CONCRETE_INSTRUCTION(OsrEntry, "osr-entry")
   2641 };
   2642 
   2643 
   2644 class LStackCheck FINAL : public LTemplateInstruction<0, 1, 0> {
   2645  public:
   2646   explicit LStackCheck(LOperand* context) {
   2647     inputs_[0] = context;
   2648   }
   2649 
   2650   LOperand* context() { return inputs_[0]; }
   2651 
   2652   DECLARE_CONCRETE_INSTRUCTION(StackCheck, "stack-check")
   2653   DECLARE_HYDROGEN_ACCESSOR(StackCheck)
   2654 
   2655   Label* done_label() { return &done_label_; }
   2656 
   2657  private:
   2658   Label done_label_;
   2659 };
   2660 
   2661 
   2662 class LForInPrepareMap FINAL : public LTemplateInstruction<1, 2, 0> {
   2663  public:
   2664   LForInPrepareMap(LOperand* context, LOperand* object) {
   2665     inputs_[0] = context;
   2666     inputs_[1] = object;
   2667   }
   2668 
   2669   LOperand* context() { return inputs_[0]; }
   2670   LOperand* object() { return inputs_[1]; }
   2671 
   2672   DECLARE_CONCRETE_INSTRUCTION(ForInPrepareMap, "for-in-prepare-map")
   2673 };
   2674 
   2675 
   2676 class LForInCacheArray FINAL : public LTemplateInstruction<1, 1, 0> {
   2677  public:
   2678   explicit LForInCacheArray(LOperand* map) {
   2679     inputs_[0] = map;
   2680   }
   2681 
   2682   LOperand* map() { return inputs_[0]; }
   2683 
   2684   DECLARE_CONCRETE_INSTRUCTION(ForInCacheArray, "for-in-cache-array")
   2685 
   2686   int idx() {
   2687     return HForInCacheArray::cast(this->hydrogen_value())->idx();
   2688   }
   2689 };
   2690 
   2691 
   2692 class LCheckMapValue FINAL : public LTemplateInstruction<0, 2, 0> {
   2693  public:
   2694   LCheckMapValue(LOperand* value, LOperand* map) {
   2695     inputs_[0] = value;
   2696     inputs_[1] = map;
   2697   }
   2698 
   2699   LOperand* value() { return inputs_[0]; }
   2700   LOperand* map() { return inputs_[1]; }
   2701 
   2702   DECLARE_CONCRETE_INSTRUCTION(CheckMapValue, "check-map-value")
   2703 };
   2704 
   2705 
   2706 class LLoadFieldByIndex FINAL : public LTemplateInstruction<1, 2, 0> {
   2707  public:
   2708   LLoadFieldByIndex(LOperand* object, LOperand* index) {
   2709     inputs_[0] = object;
   2710     inputs_[1] = index;
   2711   }
   2712 
   2713   LOperand* object() { return inputs_[0]; }
   2714   LOperand* index() { return inputs_[1]; }
   2715 
   2716   DECLARE_CONCRETE_INSTRUCTION(LoadFieldByIndex, "load-field-by-index")
   2717 };
   2718 
   2719 
   2720 class LStoreFrameContext: public LTemplateInstruction<0, 1, 0> {
   2721  public:
   2722   explicit LStoreFrameContext(LOperand* context) {
   2723     inputs_[0] = context;
   2724   }
   2725 
   2726   LOperand* context() { return inputs_[0]; }
   2727 
   2728   DECLARE_CONCRETE_INSTRUCTION(StoreFrameContext, "store-frame-context")
   2729 };
   2730 
   2731 
   2732 class LAllocateBlockContext: public LTemplateInstruction<1, 2, 0> {
   2733  public:
   2734   LAllocateBlockContext(LOperand* context, LOperand* function) {
   2735     inputs_[0] = context;
   2736     inputs_[1] = function;
   2737   }
   2738 
   2739   LOperand* context() { return inputs_[0]; }
   2740   LOperand* function() { return inputs_[1]; }
   2741 
   2742   Handle<ScopeInfo> scope_info() { return hydrogen()->scope_info(); }
   2743 
   2744   DECLARE_CONCRETE_INSTRUCTION(AllocateBlockContext, "allocate-block-context")
   2745   DECLARE_HYDROGEN_ACCESSOR(AllocateBlockContext)
   2746 };
   2747 
   2748 
   2749 class LChunkBuilder;
   2750 class LPlatformChunk FINAL : public LChunk {
   2751  public:
   2752   LPlatformChunk(CompilationInfo* info, HGraph* graph)
   2753       : LChunk(info, graph),
   2754         num_double_slots_(0) { }
   2755 
   2756   int GetNextSpillIndex(RegisterKind kind);
   2757   LOperand* GetNextSpillSlot(RegisterKind kind);
   2758 
   2759   int num_double_slots() const { return num_double_slots_; }
   2760 
   2761  private:
   2762   int num_double_slots_;
   2763 };
   2764 
   2765 
   2766 class LChunkBuilder FINAL : public LChunkBuilderBase {
   2767  public:
   2768   LChunkBuilder(CompilationInfo* info, HGraph* graph, LAllocator* allocator)
   2769       : LChunkBuilderBase(info, graph),
   2770         current_instruction_(NULL),
   2771         current_block_(NULL),
   2772         next_block_(NULL),
   2773         allocator_(allocator) {}
   2774 
   2775   // Build the sequence for the graph.
   2776   LPlatformChunk* Build();
   2777 
   2778   // Declare methods that deal with the individual node types.
   2779 #define DECLARE_DO(type) LInstruction* Do##type(H##type* node);
   2780   HYDROGEN_CONCRETE_INSTRUCTION_LIST(DECLARE_DO)
   2781 #undef DECLARE_DO
   2782 
   2783   LInstruction* DoMathFloor(HUnaryMathOperation* instr);
   2784   LInstruction* DoMathRound(HUnaryMathOperation* instr);
   2785   LInstruction* DoMathFround(HUnaryMathOperation* instr);
   2786   LInstruction* DoMathAbs(HUnaryMathOperation* instr);
   2787   LInstruction* DoMathLog(HUnaryMathOperation* instr);
   2788   LInstruction* DoMathExp(HUnaryMathOperation* instr);
   2789   LInstruction* DoMathSqrt(HUnaryMathOperation* instr);
   2790   LInstruction* DoMathPowHalf(HUnaryMathOperation* instr);
   2791   LInstruction* DoMathClz32(HUnaryMathOperation* instr);
   2792   LInstruction* DoDivByPowerOf2I(HDiv* instr);
   2793   LInstruction* DoDivByConstI(HDiv* instr);
   2794   LInstruction* DoDivI(HDiv* instr);
   2795   LInstruction* DoModByPowerOf2I(HMod* instr);
   2796   LInstruction* DoModByConstI(HMod* instr);
   2797   LInstruction* DoModI(HMod* instr);
   2798   LInstruction* DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr);
   2799   LInstruction* DoFlooringDivByConstI(HMathFloorOfDiv* instr);
   2800   LInstruction* DoFlooringDivI(HMathFloorOfDiv* instr);
   2801 
   2802  private:
   2803   // Methods for getting operands for Use / Define / Temp.
   2804   LUnallocated* ToUnallocated(Register reg);
   2805   LUnallocated* ToUnallocated(X87Register reg);
   2806 
   2807   // Methods for setting up define-use relationships.
   2808   MUST_USE_RESULT LOperand* Use(HValue* value, LUnallocated* operand);
   2809   MUST_USE_RESULT LOperand* UseFixed(HValue* value, Register fixed_register);
   2810 
   2811   // A value that is guaranteed to be allocated to a register.
   2812   // Operand created by UseRegister is guaranteed to be live until the end of
   2813   // instruction. This means that register allocator will not reuse it's
   2814   // register for any other operand inside instruction.
   2815   // Operand created by UseRegisterAtStart is guaranteed to be live only at
   2816   // instruction start. Register allocator is free to assign the same register
   2817   // to some other operand used inside instruction (i.e. temporary or
   2818   // output).
   2819   MUST_USE_RESULT LOperand* UseRegister(HValue* value);
   2820   MUST_USE_RESULT LOperand* UseRegisterAtStart(HValue* value);
   2821 
   2822   // An input operand in a register that may be trashed.
   2823   MUST_USE_RESULT LOperand* UseTempRegister(HValue* value);
   2824 
   2825   // An input operand in a register or stack slot.
   2826   MUST_USE_RESULT LOperand* Use(HValue* value);
   2827   MUST_USE_RESULT LOperand* UseAtStart(HValue* value);
   2828 
   2829   // An input operand in a register, stack slot or a constant operand.
   2830   MUST_USE_RESULT LOperand* UseOrConstant(HValue* value);
   2831   MUST_USE_RESULT LOperand* UseOrConstantAtStart(HValue* value);
   2832 
   2833   // An input operand in a fixed register or a constant operand.
   2834   MUST_USE_RESULT LOperand* UseFixedOrConstant(HValue* value,
   2835                                                Register fixed_register);
   2836 
   2837   // An input operand in a register or a constant operand.
   2838   MUST_USE_RESULT LOperand* UseRegisterOrConstant(HValue* value);
   2839   MUST_USE_RESULT LOperand* UseRegisterOrConstantAtStart(HValue* value);
   2840 
   2841   // An input operand in a constant operand.
   2842   MUST_USE_RESULT LOperand* UseConstant(HValue* value);
   2843 
   2844   // An input operand in register, stack slot or a constant operand.
   2845   // Will not be moved to a register even if one is freely available.
   2846   virtual MUST_USE_RESULT LOperand* UseAny(HValue* value) OVERRIDE;
   2847 
   2848   // Temporary operand that must be in a register.
   2849   MUST_USE_RESULT LUnallocated* TempRegister();
   2850   MUST_USE_RESULT LOperand* FixedTemp(Register reg);
   2851 
   2852   // Methods for setting up define-use relationships.
   2853   // Return the same instruction that they are passed.
   2854   LInstruction* Define(LTemplateResultInstruction<1>* instr,
   2855                        LUnallocated* result);
   2856   LInstruction* DefineAsRegister(LTemplateResultInstruction<1>* instr);
   2857   LInstruction* DefineAsSpilled(LTemplateResultInstruction<1>* instr,
   2858                                 int index);
   2859   LInstruction* DefineSameAsFirst(LTemplateResultInstruction<1>* instr);
   2860   LInstruction* DefineFixed(LTemplateResultInstruction<1>* instr,
   2861                             Register reg);
   2862   LInstruction* DefineFixed(LTemplateResultInstruction<1>* instr,
   2863                             X87Register reg);
   2864   LInstruction* DefineX87TOS(LTemplateResultInstruction<1>* instr);
   2865   // Assigns an environment to an instruction.  An instruction which can
   2866   // deoptimize must have an environment.
   2867   LInstruction* AssignEnvironment(LInstruction* instr);
   2868   // Assigns a pointer map to an instruction.  An instruction which can
   2869   // trigger a GC or a lazy deoptimization must have a pointer map.
   2870   LInstruction* AssignPointerMap(LInstruction* instr);
   2871 
   2872   enum CanDeoptimize { CAN_DEOPTIMIZE_EAGERLY, CANNOT_DEOPTIMIZE_EAGERLY };
   2873 
   2874   LOperand* GetSeqStringSetCharOperand(HSeqStringSetChar* instr);
   2875 
   2876   // Marks a call for the register allocator.  Assigns a pointer map to
   2877   // support GC and lazy deoptimization.  Assigns an environment to support
   2878   // eager deoptimization if CAN_DEOPTIMIZE_EAGERLY.
   2879   LInstruction* MarkAsCall(
   2880       LInstruction* instr,
   2881       HInstruction* hinstr,
   2882       CanDeoptimize can_deoptimize = CANNOT_DEOPTIMIZE_EAGERLY);
   2883 
   2884   void VisitInstruction(HInstruction* current);
   2885   void AddInstruction(LInstruction* instr, HInstruction* current);
   2886 
   2887   void DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block);
   2888   LInstruction* DoShift(Token::Value op, HBitwiseBinaryOperation* instr);
   2889   LInstruction* DoArithmeticD(Token::Value op,
   2890                               HArithmeticBinaryOperation* instr);
   2891   LInstruction* DoArithmeticT(Token::Value op,
   2892                               HBinaryOperation* instr);
   2893 
   2894   LOperand* GetStoreKeyedValueOperand(HStoreKeyed* instr);
   2895 
   2896   HInstruction* current_instruction_;
   2897   HBasicBlock* current_block_;
   2898   HBasicBlock* next_block_;
   2899   LAllocator* allocator_;
   2900 
   2901   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
   2902 };
   2903 
   2904 #undef DECLARE_HYDROGEN_ACCESSOR
   2905 #undef DECLARE_CONCRETE_INSTRUCTION
   2906 
   2907 } }  // namespace v8::internal
   2908 
   2909 #endif  // V8_X87_LITHIUM_X87_H_
   2910