Move Full-codegen into its own folder.

src/full-codegen.h

Index: src/full-codegen.h
diff --git a/src/full-codegen.h b/src/full-codegen.h
deleted file mode 100644
index c22a6c0e0e07f469ecd3d3519f3d5321e6a17106..0000000000000000000000000000000000000000
--- a/src/full-codegen.h
+++ /dev/null
@@ -1,1089 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_FULL_CODEGEN_H_
-#define V8_FULL_CODEGEN_H_
-
-#include "src/v8.h"
-
-#include "src/allocation.h"
-#include "src/assert-scope.h"
-#include "src/ast.h"
-#include "src/bit-vector.h"
-#include "src/code-stubs.h"
-#include "src/codegen.h"
-#include "src/compiler.h"
-#include "src/globals.h"
-#include "src/objects.h"
-#include "src/scopes.h"
-
-namespace v8 {
-namespace internal {
-
-// Forward declarations.
-class JumpPatchSite;
-
-// -----------------------------------------------------------------------------
-// Full code generator.
-
-class FullCodeGenerator: public AstVisitor {
- public:
-  enum State {
-    NO_REGISTERS,
-    TOS_REG
-  };
-
-  FullCodeGenerator(MacroAssembler* masm, CompilationInfo* info)
-      : masm_(masm),
-        info_(info),
-        scope_(info->scope()),
-        nesting_stack_(NULL),
-        loop_depth_(0),
-        try_catch_depth_(0),
-        globals_(NULL),
-        context_(NULL),
-        bailout_entries_(info->HasDeoptimizationSupport()
-                             ? info->function()->ast_node_count()
-                             : 0,
-                         info->zone()),
-        back_edges_(2, info->zone()),
-        handler_table_(info->zone()),
-        ic_total_count_(0) {
-    DCHECK(!info->IsStub());
-    Initialize();
-  }
-
-  void Initialize();
-
-  static bool MakeCode(CompilationInfo* info);
-
-  // Encode state and pc-offset as a BitField<type, start, size>.
-  // Only use 30 bits because we encode the result as a smi.
-  class StateField : public BitField<State, 0, 1> { };
-  class PcField    : public BitField<unsigned, 1, 30-1> { };
-
-  static const char* State2String(State state) {
-    switch (state) {
-      case NO_REGISTERS: return "NO_REGISTERS";
-      case TOS_REG: return "TOS_REG";
-    }
-    UNREACHABLE();
-    return NULL;
-  }
-
-  static const int kMaxBackEdgeWeight = 127;
-
-  // Platform-specific code size multiplier.
-#if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X87
-  static const int kCodeSizeMultiplier = 105;
-#elif V8_TARGET_ARCH_X64
-  static const int kCodeSizeMultiplier = 170;
-#elif V8_TARGET_ARCH_ARM
-  static const int kCodeSizeMultiplier = 149;
-#elif V8_TARGET_ARCH_ARM64
-// TODO(all): Copied ARM value. Check this is sensible for ARM64.
-  static const int kCodeSizeMultiplier = 149;
-#elif V8_TARGET_ARCH_PPC64
-  static const int kCodeSizeMultiplier = 200;
-#elif V8_TARGET_ARCH_PPC
-  static const int kCodeSizeMultiplier = 200;
-#elif V8_TARGET_ARCH_MIPS
-  static const int kCodeSizeMultiplier = 149;
-#elif V8_TARGET_ARCH_MIPS64
-  static const int kCodeSizeMultiplier = 149;
-#else
-#error Unsupported target architecture.
-#endif
-
- private:
-  class Breakable;
-  class Iteration;
-
-  class TestContext;
-
-  class NestedStatement BASE_EMBEDDED {
-   public:
-    explicit NestedStatement(FullCodeGenerator* codegen) : codegen_(codegen) {
-      // Link into codegen's nesting stack.
-      previous_ = codegen->nesting_stack_;
-      codegen->nesting_stack_ = this;
-    }
-    virtual ~NestedStatement() {
-      // Unlink from codegen's nesting stack.
-      DCHECK_EQ(this, codegen_->nesting_stack_);
-      codegen_->nesting_stack_ = previous_;
-    }
-
-    virtual Breakable* AsBreakable() { return NULL; }
-    virtual Iteration* AsIteration() { return NULL; }
-
-    virtual bool IsContinueTarget(Statement* target) { return false; }
-    virtual bool IsBreakTarget(Statement* target) { return false; }
-
-    // Notify the statement that we are exiting it via break, continue, or
-    // return and give it a chance to generate cleanup code.  Return the
-    // next outer statement in the nesting stack.  We accumulate in
-    // *stack_depth the amount to drop the stack and in *context_length the
-    // number of context chain links to unwind as we traverse the nesting
-    // stack from an exit to its target.
-    virtual NestedStatement* Exit(int* stack_depth, int* context_length) {
-      return previous_;
-    }
-
-    // Like the Exit() method above, but limited to accumulating stack depth.
-    virtual NestedStatement* AccumulateDepth(int* stack_depth) {
-      return previous_;
-    }
-
-   protected:
-    MacroAssembler* masm() { return codegen_->masm(); }
-
-    FullCodeGenerator* codegen_;
-    NestedStatement* previous_;
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(NestedStatement);
-  };
-
-  // A breakable statement such as a block.
-  class Breakable : public NestedStatement {
-   public:
-    Breakable(FullCodeGenerator* codegen, BreakableStatement* statement)
-        : NestedStatement(codegen), statement_(statement) {
-    }
-    virtual ~Breakable() {}
-
-    virtual Breakable* AsBreakable() { return this; }
-    virtual bool IsBreakTarget(Statement* target) {
-      return statement() == target;
-    }
-
-    BreakableStatement* statement() { return statement_; }
-    Label* break_label() { return &break_label_; }
-
-   private:
-    BreakableStatement* statement_;
-    Label break_label_;
-  };
-
-  // An iteration statement such as a while, for, or do loop.
-  class Iteration : public Breakable {
-   public:
-    Iteration(FullCodeGenerator* codegen, IterationStatement* statement)
-        : Breakable(codegen, statement) {
-    }
-    virtual ~Iteration() {}
-
-    virtual Iteration* AsIteration() { return this; }
-    virtual bool IsContinueTarget(Statement* target) {
-      return statement() == target;
-    }
-
-    Label* continue_label() { return &continue_label_; }
-
-   private:
-    Label continue_label_;
-  };
-
-  // A nested block statement.
-  class NestedBlock : public Breakable {
-   public:
-    NestedBlock(FullCodeGenerator* codegen, Block* block)
-        : Breakable(codegen, block) {
-    }
-    virtual ~NestedBlock() {}
-
-    virtual NestedStatement* Exit(int* stack_depth, int* context_length) {
-      auto block_scope = statement()->AsBlock()->scope();
-      if (block_scope != nullptr) {
-        if (block_scope->ContextLocalCount() > 0) ++(*context_length);
-      }
-      return previous_;
-    }
-  };
-
-  // The try block of a try/catch statement.
-  class TryCatch : public NestedStatement {
-   public:
-    static const int kElementCount = TryBlockConstant::kElementCount;
-
-    explicit TryCatch(FullCodeGenerator* codegen) : NestedStatement(codegen) {}
-    virtual ~TryCatch() {}
-
-    virtual NestedStatement* Exit(int* stack_depth, int* context_length) {
-      *stack_depth += kElementCount;
-      return previous_;
-    }
-    virtual NestedStatement* AccumulateDepth(int* stack_depth) {
-      *stack_depth += kElementCount;
-      return previous_;
-    }
-  };
-
-  // The try block of a try/finally statement.
-  class TryFinally : public NestedStatement {
-   public:
-    static const int kElementCount = TryBlockConstant::kElementCount;
-
-    TryFinally(FullCodeGenerator* codegen, Label* finally_entry)
-        : NestedStatement(codegen), finally_entry_(finally_entry) {
-    }
-    virtual ~TryFinally() {}
-
-    virtual NestedStatement* Exit(int* stack_depth, int* context_length);
-    virtual NestedStatement* AccumulateDepth(int* stack_depth) {
-      *stack_depth += kElementCount;
-      return previous_;
-    }
-
-   private:
-    Label* finally_entry_;
-  };
-
-  // The finally block of a try/finally statement.
-  class Finally : public NestedStatement {
-   public:
-    static const int kElementCount = 3;
-
-    explicit Finally(FullCodeGenerator* codegen) : NestedStatement(codegen) {}
-    virtual ~Finally() {}
-
-    virtual NestedStatement* Exit(int* stack_depth, int* context_length) {
-      *stack_depth += kElementCount;
-      return previous_;
-    }
-    virtual NestedStatement* AccumulateDepth(int* stack_depth) {
-      *stack_depth += kElementCount;
-      return previous_;
-    }
-  };
-
-  // The body of a for/in loop.
-  class ForIn : public Iteration {
-   public:
-    static const int kElementCount = 5;
-
-    ForIn(FullCodeGenerator* codegen, ForInStatement* statement)
-        : Iteration(codegen, statement) {
-    }
-    virtual ~ForIn() {}
-
-    virtual NestedStatement* Exit(int* stack_depth, int* context_length) {
-      *stack_depth += kElementCount;
-      return previous_;
-    }
-    virtual NestedStatement* AccumulateDepth(int* stack_depth) {
-      *stack_depth += kElementCount;
-      return previous_;
-    }
-  };
-
-
-  // The body of a with or catch.
-  class WithOrCatch : public NestedStatement {
-   public:
-    explicit WithOrCatch(FullCodeGenerator* codegen)
-        : NestedStatement(codegen) {
-    }
-    virtual ~WithOrCatch() {}
-
-    virtual NestedStatement* Exit(int* stack_depth, int* context_length) {
-      ++(*context_length);
-      return previous_;
-    }
-  };
-
-  // A platform-specific utility to overwrite the accumulator register
-  // with a GC-safe value.
-  void ClearAccumulator();
-
-  // Determine whether or not to inline the smi case for the given
-  // operation.
-  bool ShouldInlineSmiCase(Token::Value op);
-
-  // Helper function to convert a pure value into a test context.  The value
-  // is expected on the stack or the accumulator, depending on the platform.
-  // See the platform-specific implementation for details.
-  void DoTest(Expression* condition,
-              Label* if_true,
-              Label* if_false,
-              Label* fall_through);
-  void DoTest(const TestContext* context);
-
-  // Helper function to split control flow and avoid a branch to the
-  // fall-through label if it is set up.
-#if V8_TARGET_ARCH_MIPS
-  void Split(Condition cc,
-             Register lhs,
-             const Operand&  rhs,
-             Label* if_true,
-             Label* if_false,
-             Label* fall_through);
-#elif V8_TARGET_ARCH_MIPS64
-  void Split(Condition cc,
-             Register lhs,
-             const Operand&  rhs,
-             Label* if_true,
-             Label* if_false,
-             Label* fall_through);
-#elif V8_TARGET_ARCH_PPC
-  void Split(Condition cc, Label* if_true, Label* if_false, Label* fall_through,
-             CRegister cr = cr7);
-#else  // All other arch.
-  void Split(Condition cc,
-             Label* if_true,
-             Label* if_false,
-             Label* fall_through);
-#endif
-
-  // Load the value of a known (PARAMETER, LOCAL, or CONTEXT) variable into
-  // a register.  Emits a context chain walk if if necessary (so does
-  // SetVar) so avoid calling both on the same variable.
-  void GetVar(Register destination, Variable* var);
-
-  // Assign to a known (PARAMETER, LOCAL, or CONTEXT) variable.  If it's in
-  // the context, the write barrier will be emitted and source, scratch0,
-  // scratch1 will be clobbered.  Emits a context chain walk if if necessary
-  // (so does GetVar) so avoid calling both on the same variable.
-  void SetVar(Variable* var,
-              Register source,
-              Register scratch0,
-              Register scratch1);
-
-  // An operand used to read/write a stack-allocated (PARAMETER or LOCAL)
-  // variable.  Writing does not need the write barrier.
-  MemOperand StackOperand(Variable* var);
-
-  // An operand used to read/write a known (PARAMETER, LOCAL, or CONTEXT)
-  // variable.  May emit code to traverse the context chain, loading the
-  // found context into the scratch register.  Writing to this operand will
-  // need the write barrier if location is CONTEXT.
-  MemOperand VarOperand(Variable* var, Register scratch);
-
-  void VisitForEffect(Expression* expr) {
-    EffectContext context(this);
-    Visit(expr);
-    PrepareForBailout(expr, NO_REGISTERS);
-  }
-
-  void VisitForAccumulatorValue(Expression* expr) {
-    AccumulatorValueContext context(this);
-    Visit(expr);
-    PrepareForBailout(expr, TOS_REG);
-  }
-
-  void VisitForStackValue(Expression* expr) {
-    StackValueContext context(this);
-    Visit(expr);
-    PrepareForBailout(expr, NO_REGISTERS);
-  }
-
-  void VisitForControl(Expression* expr,
-                       Label* if_true,
-                       Label* if_false,
-                       Label* fall_through) {
-    TestContext context(this, expr, if_true, if_false, fall_through);
-    Visit(expr);
-    // For test contexts, we prepare for bailout before branching, not at
-    // the end of the entire expression.  This happens as part of visiting
-    // the expression.
-  }
-
-  void VisitInDuplicateContext(Expression* expr);
-
-  void VisitDeclarations(ZoneList<Declaration*>* declarations) override;
-  void DeclareModules(Handle<FixedArray> descriptions);
-  void DeclareGlobals(Handle<FixedArray> pairs);
-  int DeclareGlobalsFlags();
-
-  // Generate code to create an iterator result object.  The "value" property is
-  // set to a value popped from the stack, and "done" is set according to the
-  // argument.  The result object is left in the result register.
-  void EmitCreateIteratorResult(bool done);
-
-  // Try to perform a comparison as a fast inlined literal compare if
-  // the operands allow it.  Returns true if the compare operations
-  // has been matched and all code generated; false otherwise.
-  bool TryLiteralCompare(CompareOperation* compare);
-
-  // Platform-specific code for comparing the type of a value with
-  // a given literal string.
-  void EmitLiteralCompareTypeof(Expression* expr,
-                                Expression* sub_expr,
-                                Handle<String> check);
-
-  // Platform-specific code for equality comparison with a nil-like value.
-  void EmitLiteralCompareNil(CompareOperation* expr,
-                             Expression* sub_expr,
-                             NilValue nil);
-
-  // Bailout support.
-  void PrepareForBailout(Expression* node, State state);
-  void PrepareForBailoutForId(BailoutId id, State state);
-
-  // Feedback slot support. The feedback vector will be cleared during gc and
-  // collected by the type-feedback oracle.
-  Handle<TypeFeedbackVector> FeedbackVector() const {
-    return info_->feedback_vector();
-  }
-  void EnsureSlotContainsAllocationSite(FeedbackVectorSlot slot);
-  void EnsureSlotContainsAllocationSite(FeedbackVectorICSlot slot);
-
-  // Returns a smi for the index into the FixedArray that backs the feedback
-  // vector
-  Smi* SmiFromSlot(FeedbackVectorSlot slot) const {
-    return Smi::FromInt(FeedbackVector()->GetIndex(slot));
-  }
-
-  Smi* SmiFromSlot(FeedbackVectorICSlot slot) const {
-    return Smi::FromInt(FeedbackVector()->GetIndex(slot));
-  }
-
-  // Record a call's return site offset, used to rebuild the frame if the
-  // called function was inlined at the site.
-  void RecordJSReturnSite(Call* call);
-
-  // Prepare for bailout before a test (or compare) and branch.  If
-  // should_normalize, then the following comparison will not handle the
-  // canonical JS true value so we will insert a (dead) test against true at
-  // the actual bailout target from the optimized code. If not
-  // should_normalize, the true and false labels are ignored.
-  void PrepareForBailoutBeforeSplit(Expression* expr,
-                                    bool should_normalize,
-                                    Label* if_true,
-                                    Label* if_false);
-
-  // If enabled, emit debug code for checking that the current context is
-  // neither a with nor a catch context.
-  void EmitDebugCheckDeclarationContext(Variable* variable);
-
-  // This is meant to be called at loop back edges, |back_edge_target| is
-  // the jump target of the back edge and is used to approximate the amount
-  // of code inside the loop.
-  void EmitBackEdgeBookkeeping(IterationStatement* stmt,
-                               Label* back_edge_target);
-  // Record the OSR AST id corresponding to a back edge in the code.
-  void RecordBackEdge(BailoutId osr_ast_id);
-  // Emit a table of back edge ids, pcs and loop depths into the code stream.
-  // Return the offset of the start of the table.
-  unsigned EmitBackEdgeTable();
-
-  void EmitProfilingCounterDecrement(int delta);
-  void EmitProfilingCounterReset();
-
-  // Emit code to pop values from the stack associated with nested statements
-  // like try/catch, try/finally, etc, running the finallies and unwinding the
-  // handlers as needed.
-  void EmitUnwindBeforeReturn();
-
-  // Platform-specific return sequence
-  void EmitReturnSequence();
-
-  // Platform-specific code sequences for calls
-  void EmitCall(Call* expr, CallICState::CallType = CallICState::FUNCTION);
-  void EmitSuperConstructorCall(Call* expr);
-  void EmitCallWithLoadIC(Call* expr);
-  void EmitSuperCallWithLoadIC(Call* expr);
-  void EmitKeyedCallWithLoadIC(Call* expr, Expression* key);
-  void EmitKeyedSuperCallWithLoadIC(Call* expr);
-
-#define FOR_EACH_FULL_CODE_INTRINSIC(F)   \
-  F(IsSmi)                                \
-  F(IsNonNegativeSmi)                     \
-  F(IsArray)                              \
-  F(IsTypedArray)                         \
-  F(IsRegExp)                             \
-  F(IsJSProxy)                            \
-  F(IsConstructCall)                      \
-  F(CallFunction)                         \
-  F(DefaultConstructorCallSuper)          \
-  F(ArgumentsLength)                      \
-  F(Arguments)                            \
-  F(ValueOf)                              \
-  F(SetValueOf)                           \
-  F(IsDate)                               \
-  F(DateField)                            \
-  F(StringCharFromCode)                   \
-  F(StringCharAt)                         \
-  F(OneByteSeqStringSetChar)              \
-  F(TwoByteSeqStringSetChar)              \
-  F(ObjectEquals)                         \
-  F(IsObject)                             \
-  F(IsFunction)                           \
-  F(IsUndetectableObject)                 \
-  F(IsSpecObject)                         \
-  F(IsStringWrapperSafeForDefaultValueOf) \
-  F(MathPow)                              \
-  F(IsMinusZero)                          \
-  F(HasCachedArrayIndex)                  \
-  F(GetCachedArrayIndex)                  \
-  F(FastOneByteArrayJoin)                 \
-  F(GeneratorNext)                        \
-  F(GeneratorThrow)                       \
-  F(DebugBreakInOptimizedCode)            \
-  F(ClassOf)                              \
-  F(StringCharCodeAt)                     \
-  F(StringAdd)                            \
-  F(SubString)                            \
-  F(StringCompare)                        \
-  F(RegExpExec)                           \
-  F(RegExpConstructResult)                \
-  F(GetFromCache)                         \
-  F(NumberToString)                       \
-  F(DebugIsActive)
-
-#define GENERATOR_DECLARATION(Name) void Emit##Name(CallRuntime* call);
-  FOR_EACH_FULL_CODE_INTRINSIC(GENERATOR_DECLARATION)
-#undef GENERATOR_DECLARATION
-
-  // Platform-specific code for resuming generators.
-  void EmitGeneratorResume(Expression *generator,
-                           Expression *value,
-                           JSGeneratorObject::ResumeMode resume_mode);
-
-  // Platform-specific code for loading variables.
-  void EmitLoadGlobalCheckExtensions(VariableProxy* proxy,
-                                     TypeofMode typeof_mode, Label* slow);
-  MemOperand ContextSlotOperandCheckExtensions(Variable* var, Label* slow);
-  void EmitDynamicLookupFastCase(VariableProxy* proxy, TypeofMode typeof_mode,
-                                 Label* slow, Label* done);
-  void EmitGlobalVariableLoad(VariableProxy* proxy, TypeofMode typeof_mode);
-  void EmitVariableLoad(VariableProxy* proxy,
-                        TypeofMode typeof_mode = NOT_INSIDE_TYPEOF);
-
-  void EmitAccessor(Expression* expression);
-
-  // Expects the arguments and the function already pushed.
-  void EmitResolvePossiblyDirectEval(int arg_count);
-
-  // Platform-specific support for allocating a new closure based on
-  // the given function info.
-  void EmitNewClosure(Handle<SharedFunctionInfo> info, bool pretenure);
-
-  // Re-usable portions of CallRuntime
-  void EmitLoadJSRuntimeFunction(CallRuntime* expr);
-  void EmitCallJSRuntimeFunction(CallRuntime* expr);
-
-  // Load a value from a named property.
-  // The receiver is left on the stack by the IC.
-  void EmitNamedPropertyLoad(Property* expr);
-
-  // Load a value from super.named property.
-  // Expect receiver ('this' value) and home_object on the stack.
-  void EmitNamedSuperPropertyLoad(Property* expr);
-
-  // Load a value from super[keyed] property.
-  // Expect receiver ('this' value), home_object and key on the stack.
-  void EmitKeyedSuperPropertyLoad(Property* expr);
-
-  // Load a value from a keyed property.
-  // The receiver and the key is left on the stack by the IC.
-  void EmitKeyedPropertyLoad(Property* expr);
-
-  // Adds the properties to the class (function) object and to its prototype.
-  // Expects the class (function) in the accumulator. The class (function) is
-  // in the accumulator after installing all the properties.
-  void EmitClassDefineProperties(ClassLiteral* lit, int* used_store_slots);
-
-  // Pushes the property key as a Name on the stack.
-  void EmitPropertyKey(ObjectLiteralProperty* property, BailoutId bailout_id);
-
-  // Apply the compound assignment operator. Expects the left operand on top
-  // of the stack and the right one in the accumulator.
-  void EmitBinaryOp(BinaryOperation* expr, Token::Value op);
-
-  // Helper functions for generating inlined smi code for certain
-  // binary operations.
-  void EmitInlineSmiBinaryOp(BinaryOperation* expr,
-                             Token::Value op,
-                             Expression* left,
-                             Expression* right);
-
-  // Assign to the given expression as if via '='. The right-hand-side value
-  // is expected in the accumulator. slot is only used if FLAG_vector_stores
-  // is true.
-  void EmitAssignment(Expression* expr, FeedbackVectorICSlot slot);
-
-  // Complete a variable assignment.  The right-hand-side value is expected
-  // in the accumulator.
-  void EmitVariableAssignment(Variable* var, Token::Value op,
-                              FeedbackVectorICSlot slot);
-
-  // Helper functions to EmitVariableAssignment
-  void EmitStoreToStackLocalOrContextSlot(Variable* var,
-                                          MemOperand location);
-
-  // Complete a named property assignment.  The receiver is expected on top
-  // of the stack and the right-hand-side value in the accumulator.
-  void EmitNamedPropertyAssignment(Assignment* expr);
-
-  // Complete a super named property assignment. The right-hand-side value
-  // is expected in accumulator.
-  void EmitNamedSuperPropertyStore(Property* prop);
-
-  // Complete a super named property assignment. The right-hand-side value
-  // is expected in accumulator.
-  void EmitKeyedSuperPropertyStore(Property* prop);
-
-  // Complete a keyed property assignment.  The receiver and key are
-  // expected on top of the stack and the right-hand-side value in the
-  // accumulator.
-  void EmitKeyedPropertyAssignment(Assignment* expr);
-
-  static bool NeedsHomeObject(Expression* expr) {
-    return FunctionLiteral::NeedsHomeObject(expr);
-  }
-
-  // Adds the [[HomeObject]] to |initializer| if it is a FunctionLiteral.
-  // The value of the initializer is expected to be at the top of the stack.
-  // |offset| is the offset in the stack where the home object can be found.
-  void EmitSetHomeObjectIfNeeded(
-      Expression* initializer, int offset,
-      FeedbackVectorICSlot slot = FeedbackVectorICSlot::Invalid());
-
-  void EmitLoadSuperConstructor(SuperCallReference* super_call_ref);
-
-  void CallIC(Handle<Code> code,
-              TypeFeedbackId id = TypeFeedbackId::None());
-
-  // Inside typeof reference errors are never thrown.
-  void CallLoadIC(TypeofMode typeof_mode, LanguageMode language_mode = SLOPPY,
-                  TypeFeedbackId id = TypeFeedbackId::None());
-  void CallStoreIC(TypeFeedbackId id = TypeFeedbackId::None());
-
-  void SetFunctionPosition(FunctionLiteral* fun);
-  void SetReturnPosition(FunctionLiteral* fun);
-
-  enum InsertBreak { INSERT_BREAK, SKIP_BREAK };
-
-  // During stepping we want to be able to break at each statement, but not at
-  // every (sub-)expression. That is why by default we insert breaks at every
-  // statement position, but not at every expression position, unless stated
-  // otherwise.
-  void SetStatementPosition(Statement* stmt,
-                            InsertBreak insert_break = INSERT_BREAK);
-  void SetExpressionPosition(Expression* expr,
-                             InsertBreak insert_break = SKIP_BREAK);
-
-  // Consider an expression a statement. As such, we also insert a break.
-  // This is used in loop headers where we want to break for each iteration.
-  void SetExpressionAsStatementPosition(Expression* expr);
-
-  void SetCallPosition(Expression* expr, int argc);
-
-  void SetConstructCallPosition(Expression* expr);
-
-  // Non-local control flow support.
-  void EnterTryBlock(int handler_index, Label* handler);
-  void ExitTryBlock(int handler_index);
-  void EnterFinallyBlock();
-  void ExitFinallyBlock();
-  void ClearPendingMessage();
-
-  // Loop nesting counter.
-  int loop_depth() { return loop_depth_; }
-  void increment_loop_depth() { loop_depth_++; }
-  void decrement_loop_depth() {
-    DCHECK(loop_depth_ > 0);
-    loop_depth_--;
-  }
-
-  MacroAssembler* masm() const { return masm_; }
-
-  class ExpressionContext;
-  const ExpressionContext* context() { return context_; }
-  void set_new_context(const ExpressionContext* context) { context_ = context; }
-
-  Handle<Script> script() { return info_->script(); }
-  bool is_eval() { return info_->is_eval(); }
-  bool is_native() { return info_->is_native(); }
-  LanguageMode language_mode() { return function()->language_mode(); }
-  bool is_simple_parameter_list() { return info_->is_simple_parameter_list(); }
-  FunctionLiteral* function() { return info_->function(); }
-  Scope* scope() { return scope_; }
-
-  static Register result_register();
-  static Register context_register();
-
-  // Set fields in the stack frame. Offsets are the frame pointer relative
-  // offsets defined in, e.g., StandardFrameConstants.
-  void StoreToFrameField(int frame_offset, Register value);
-
-  // Load a value from the current context. Indices are defined as an enum
-  // in v8::internal::Context.
-  void LoadContextField(Register dst, int context_index);
-
-  // Push the function argument for the runtime functions PushWithContext
-  // and PushCatchContext.
-  void PushFunctionArgumentForContextAllocation();
-
-  void PushCalleeAndWithBaseObject(Call* expr);
-
-  // AST node visit functions.
-#define DECLARE_VISIT(type) virtual void Visit##type(type* node) override;
-  AST_NODE_LIST(DECLARE_VISIT)
-#undef DECLARE_VISIT
-
-  void VisitComma(BinaryOperation* expr);
-  void VisitLogicalExpression(BinaryOperation* expr);
-  void VisitArithmeticExpression(BinaryOperation* expr);
-
-  void VisitForTypeofValue(Expression* expr);
-
-  void Generate();
-  void PopulateDeoptimizationData(Handle<Code> code);
-  void PopulateTypeFeedbackInfo(Handle<Code> code);
-  void PopulateHandlerTable(Handle<Code> code);
-
-  bool MustCreateObjectLiteralWithRuntime(ObjectLiteral* expr) const;
-  bool MustCreateArrayLiteralWithRuntime(ArrayLiteral* expr) const;
-
-  void EmitLoadStoreICSlot(FeedbackVectorICSlot slot);
-
-  int NewHandlerTableEntry();
-
-  struct BailoutEntry {
-    BailoutId id;
-    unsigned pc_and_state;
-  };
-
-  struct BackEdgeEntry {
-    BailoutId id;
-    unsigned pc;
-    uint32_t loop_depth;
-  };
-
-  struct HandlerTableEntry {
-    unsigned range_start;
-    unsigned range_end;
-    unsigned handler_offset;
-    int stack_depth;
-    int try_catch_depth;
-  };
-
-  class ExpressionContext BASE_EMBEDDED {
-   public:
-    explicit ExpressionContext(FullCodeGenerator* codegen)
-        : masm_(codegen->masm()), old_(codegen->context()), codegen_(codegen) {
-      codegen->set_new_context(this);
-    }
-
-    virtual ~ExpressionContext() {
-      codegen_->set_new_context(old_);
-    }
-
-    Isolate* isolate() const { return codegen_->isolate(); }
-
-    // Convert constant control flow (true or false) to the result expected for
-    // this expression context.
-    virtual void Plug(bool flag) const = 0;
-
-    // Emit code to convert a pure value (in a register, known variable
-    // location, as a literal, or on top of the stack) into the result
-    // expected according to this expression context.
-    virtual void Plug(Register reg) const = 0;
-    virtual void Plug(Variable* var) const = 0;
-    virtual void Plug(Handle<Object> lit) const = 0;
-    virtual void Plug(Heap::RootListIndex index) const = 0;
-    virtual void PlugTOS() const = 0;
-
-    // Emit code to convert pure control flow to a pair of unbound labels into
-    // the result expected according to this expression context.  The
-    // implementation will bind both labels unless it's a TestContext, which
-    // won't bind them at this point.
-    virtual void Plug(Label* materialize_true,
-                      Label* materialize_false) const = 0;
-
-    // Emit code to discard count elements from the top of stack, then convert
-    // a pure value into the result expected according to this expression
-    // context.
-    virtual void DropAndPlug(int count, Register reg) const = 0;
-
-    // Set up branch labels for a test expression.  The three Label** parameters
-    // are output parameters.
-    virtual void PrepareTest(Label* materialize_true,
-                             Label* materialize_false,
-                             Label** if_true,
-                             Label** if_false,
-                             Label** fall_through) const = 0;
-
-    // Returns true if we are evaluating only for side effects (i.e. if the
-    // result will be discarded).
-    virtual bool IsEffect() const { return false; }
-
-    // Returns true if we are evaluating for the value (in accu/on stack).
-    virtual bool IsAccumulatorValue() const { return false; }
-    virtual bool IsStackValue() const { return false; }
-
-    // Returns true if we are branching on the value rather than materializing
-    // it.  Only used for asserts.
-    virtual bool IsTest() const { return false; }
-
-   protected:
-    FullCodeGenerator* codegen() const { return codegen_; }
-    MacroAssembler* masm() const { return masm_; }
-    MacroAssembler* masm_;
-
-   private:
-    const ExpressionContext* old_;
-    FullCodeGenerator* codegen_;
-  };
-
-  class AccumulatorValueContext : public ExpressionContext {
-   public:
-    explicit AccumulatorValueContext(FullCodeGenerator* codegen)
-        : ExpressionContext(codegen) { }
-
-    virtual void Plug(bool flag) const;
-    virtual void Plug(Register reg) const;
-    virtual void Plug(Label* materialize_true, Label* materialize_false) const;
-    virtual void Plug(Variable* var) const;
-    virtual void Plug(Handle<Object> lit) const;
-    virtual void Plug(Heap::RootListIndex) const;
-    virtual void PlugTOS() const;
-    virtual void DropAndPlug(int count, Register reg) const;
-    virtual void PrepareTest(Label* materialize_true,
-                             Label* materialize_false,
-                             Label** if_true,
-                             Label** if_false,
-                             Label** fall_through) const;
-    virtual bool IsAccumulatorValue() const { return true; }
-  };
-
-  class StackValueContext : public ExpressionContext {
-   public:
-    explicit StackValueContext(FullCodeGenerator* codegen)
-        : ExpressionContext(codegen) { }
-
-    virtual void Plug(bool flag) const;
-    virtual void Plug(Register reg) const;
-    virtual void Plug(Label* materialize_true, Label* materialize_false) const;
-    virtual void Plug(Variable* var) const;
-    virtual void Plug(Handle<Object> lit) const;
-    virtual void Plug(Heap::RootListIndex) const;
-    virtual void PlugTOS() const;
-    virtual void DropAndPlug(int count, Register reg) const;
-    virtual void PrepareTest(Label* materialize_true,
-                             Label* materialize_false,
-                             Label** if_true,
-                             Label** if_false,
-                             Label** fall_through) const;
-    virtual bool IsStackValue() const { return true; }
-  };
-
-  class TestContext : public ExpressionContext {
-   public:
-    TestContext(FullCodeGenerator* codegen,
-                Expression* condition,
-                Label* true_label,
-                Label* false_label,
-                Label* fall_through)
-        : ExpressionContext(codegen),
-          condition_(condition),
-          true_label_(true_label),
-          false_label_(false_label),
-          fall_through_(fall_through) { }
-
-    static const TestContext* cast(const ExpressionContext* context) {
-      DCHECK(context->IsTest());
-      return reinterpret_cast<const TestContext*>(context);
-    }
-
-    Expression* condition() const { return condition_; }
-    Label* true_label() const { return true_label_; }
-    Label* false_label() const { return false_label_; }
-    Label* fall_through() const { return fall_through_; }
-
-    virtual void Plug(bool flag) const;
-    virtual void Plug(Register reg) const;
-    virtual void Plug(Label* materialize_true, Label* materialize_false) const;
-    virtual void Plug(Variable* var) const;
-    virtual void Plug(Handle<Object> lit) const;
-    virtual void Plug(Heap::RootListIndex) const;
-    virtual void PlugTOS() const;
-    virtual void DropAndPlug(int count, Register reg) const;
-    virtual void PrepareTest(Label* materialize_true,
-                             Label* materialize_false,
-                             Label** if_true,
-                             Label** if_false,
-                             Label** fall_through) const;
-    virtual bool IsTest() const { return true; }
-
-   private:
-    Expression* condition_;
-    Label* true_label_;
-    Label* false_label_;
-    Label* fall_through_;
-  };
-
-  class EffectContext : public ExpressionContext {
-   public:
-    explicit EffectContext(FullCodeGenerator* codegen)
-        : ExpressionContext(codegen) { }
-
-    virtual void Plug(bool flag) const;
-    virtual void Plug(Register reg) const;
-    virtual void Plug(Label* materialize_true, Label* materialize_false) const;
-    virtual void Plug(Variable* var) const;
-    virtual void Plug(Handle<Object> lit) const;
-    virtual void Plug(Heap::RootListIndex) const;
-    virtual void PlugTOS() const;
-    virtual void DropAndPlug(int count, Register reg) const;
-    virtual void PrepareTest(Label* materialize_true,
-                             Label* materialize_false,
-                             Label** if_true,
-                             Label** if_false,
-                             Label** fall_through) const;
-    virtual bool IsEffect() const { return true; }
-  };
-
-  class EnterBlockScopeIfNeeded {
-   public:
-    EnterBlockScopeIfNeeded(FullCodeGenerator* codegen, Scope* scope,
-                            BailoutId entry_id, BailoutId declarations_id,
-                            BailoutId exit_id);
-    ~EnterBlockScopeIfNeeded();
-
-   private:
-    MacroAssembler* masm() const { return codegen_->masm(); }
-
-    FullCodeGenerator* codegen_;
-    Scope* saved_scope_;
-    BailoutId exit_id_;
-    bool needs_block_context_;
-  };
-
-  MacroAssembler* masm_;
-  CompilationInfo* info_;
-  Scope* scope_;
-  Label return_label_;
-  NestedStatement* nesting_stack_;
-  int loop_depth_;
-  int try_catch_depth_;
-  ZoneList<Handle<Object> >* globals_;
-  Handle<FixedArray> modules_;
-  int module_index_;
-  const ExpressionContext* context_;
-  ZoneList<BailoutEntry> bailout_entries_;
-  ZoneList<BackEdgeEntry> back_edges_;
-  ZoneVector<HandlerTableEntry> handler_table_;
-  int ic_total_count_;
-  Handle<Cell> profiling_counter_;
-  bool generate_debug_code_;
-
-  friend class NestedStatement;
-
-  DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
-  DISALLOW_COPY_AND_ASSIGN(FullCodeGenerator);
-};
-
-
-// A map from property names to getter/setter pairs allocated in the zone.
-class AccessorTable: public TemplateHashMap<Literal,
-                                            ObjectLiteral::Accessors,
-                                            ZoneAllocationPolicy> {
- public:
-  explicit AccessorTable(Zone* zone) :
-      TemplateHashMap<Literal, ObjectLiteral::Accessors,
-                      ZoneAllocationPolicy>(Literal::Match,
-                                            ZoneAllocationPolicy(zone)),
-      zone_(zone) { }
-
-  Iterator lookup(Literal* literal) {
-    Iterator it = find(literal, true, ZoneAllocationPolicy(zone_));
-    if (it->second == NULL) it->second = new(zone_) ObjectLiteral::Accessors();
-    return it;
-  }
-
- private:
-  Zone* zone_;
-};
-
-
-class BackEdgeTable {
- public:
-  BackEdgeTable(Code* code, DisallowHeapAllocation* required) {
-    DCHECK(code->kind() == Code::FUNCTION);
-    instruction_start_ = code->instruction_start();
-    Address table_address = instruction_start_ + code->back_edge_table_offset();
-    length_ = Memory::uint32_at(table_address);
-    start_ = table_address + kTableLengthSize;
-  }
-
-  uint32_t length() { return length_; }
-
-  BailoutId ast_id(uint32_t index) {
-    return BailoutId(static_cast<int>(
-        Memory::uint32_at(entry_at(index) + kAstIdOffset)));
-  }
-
-  uint32_t loop_depth(uint32_t index) {
-    return Memory::uint32_at(entry_at(index) + kLoopDepthOffset);
-  }
-
-  uint32_t pc_offset(uint32_t index) {
-    return Memory::uint32_at(entry_at(index) + kPcOffsetOffset);
-  }
-
-  Address pc(uint32_t index) {
-    return instruction_start_ + pc_offset(index);
-  }
-
-  enum BackEdgeState {
-    INTERRUPT,
-    ON_STACK_REPLACEMENT,
-    OSR_AFTER_STACK_CHECK
-  };
-
-  // Increase allowed loop nesting level by one and patch those matching loops.
-  static void Patch(Isolate* isolate, Code* unoptimized_code);
-
-  // Patch the back edge to the target state, provided the correct callee.
-  static void PatchAt(Code* unoptimized_code,
-                      Address pc,
-                      BackEdgeState target_state,
-                      Code* replacement_code);
-
-  // Change all patched back edges back to normal interrupts.
-  static void Revert(Isolate* isolate,
-                     Code* unoptimized_code);
-
-  // Change a back edge patched for on-stack replacement to perform a
-  // stack check first.
-  static void AddStackCheck(Handle<Code> code, uint32_t pc_offset);
-
-  // Revert the patch by AddStackCheck.
-  static void RemoveStackCheck(Handle<Code> code, uint32_t pc_offset);
-
-  // Return the current patch state of the back edge.
-  static BackEdgeState GetBackEdgeState(Isolate* isolate,
-                                        Code* unoptimized_code,
-                                        Address pc_after);
-
-#ifdef DEBUG
-  // Verify that all back edges of a certain loop depth are patched.
-  static bool Verify(Isolate* isolate, Code* unoptimized_code);
-#endif  // DEBUG
-
- private:
-  Address entry_at(uint32_t index) {
-    DCHECK(index < length_);
-    return start_ + index * kEntrySize;
-  }
-
-  static const int kTableLengthSize = kIntSize;
-  static const int kAstIdOffset = 0 * kIntSize;
-  static const int kPcOffsetOffset = 1 * kIntSize;
-  static const int kLoopDepthOffset = 2 * kIntSize;
-  static const int kEntrySize = 3 * kIntSize;
-
-  Address start_;
-  Address instruction_start_;
-  uint32_t length_;
-};
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_FULL_CODEGEN_H_