[interpreter] Support for ES6 super keyword.

src/interpreter/bytecode-generator.h

 // Copyright 2015 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_INTERPRETER_BYTECODE_GENERATOR_H_
 #define V8_INTERPRETER_BYTECODE_GENERATOR_H_
 
 #include "src/ast/ast.h"
 #include "src/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecodes.h"
@@ skipping 49 matching lines @@
   void VisitDelete(UnaryOperation* expr);
 
   // Used by flow control routines to evaluate loop condition.
   void VisitCondition(Expression* expr);
 
   // Helper visitors which perform common operations.
   Register VisitArguments(ZoneList<Expression*>* arguments);
 
   void VisitPropertyLoad(Register obj, Property* expr);
   void VisitPropertyLoadForAccumulator(Register obj, Property* expr);
-
+  void VisitKeyedSuperPropertyLoad(Property* property, Register receiver_out);

[rmcilroy, 2016/02/11 15:25:49]

I think these could do with a comment to specify what is returned in the
accumulator, and that reciever_out is an optional parameter

[oth, 2016/02/12 14:12:53]

Done.

+  void VisitNamedSuperPropertyLoad(Property* property, Register receiver_out);
   void VisitVariableLoad(Variable* variable, FeedbackVectorSlot slot,
                          TypeofMode typeof_mode = NOT_INSIDE_TYPEOF);
   void VisitVariableLoadForAccumulatorValue(
       Variable* variable, FeedbackVectorSlot slot,
       TypeofMode typeof_mode = NOT_INSIDE_TYPEOF);
   MUST_USE_RESULT Register
   VisitVariableLoadForRegisterValue(Variable* variable, FeedbackVectorSlot slot,
                                     TypeofMode typeof_mode = NOT_INSIDE_TYPEOF);
   void VisitVariableAssignment(Variable* variable, Token::Value op,
                                FeedbackVectorSlot slot);
+  void BuildKeyedSuperLoad(Register receiver, Register home_object,
+                           Register key);
+  void BuildKeyedSuperStore(Register receiver, Register home_object,
+                            Register key);
+  void BuildNamedSuperLoad(Register receiver, Register home_object,
+                           Handle<Name> name);
+  void BuildNamedSuperStore(Register receiver, Register home_object,
+                            Handle<Name> name);
   void BuildThrowIfHole(Handle<String> name);
   void BuildThrowIfNotHole(Handle<String> name);
   void BuildThrowReassignConstant(Handle<String> name);
   void BuildHoleCheckForVariableLoad(VariableMode mode, Handle<String> name);
   void BuildHoleCheckForVariableAssignment(Variable* variable, Token::Value op);
 
   void VisitArgumentsObject(Variable* variable);
   void VisitRestArgumentsArray(Variable* rest);
+  void VisitCallSuper(Call* call);
   void VisitClassLiteralContents(ClassLiteral* expr);
   void VisitClassLiteralForRuntimeDefinition(ClassLiteral* expr);
   void VisitClassLiteralProperties(ClassLiteral* expr, Register literal,
                                    Register prototype);
   void VisitClassLiteralStaticPrototypeWithComputedName(Register name);
   void VisitThisFunctionVariable(Variable* variable);
   void VisitNewTargetVariable(Variable* variable);
   void VisitNewLocalFunctionContext();
   void VisitBuildLocalActivationContext();
   void VisitBlockDeclarationsAndStatements(Block* stmt);
@@ skipping 71 matching lines @@
   ContextScope* execution_context_;
   ExpressionResultScope* execution_result_;
   RegisterAllocationScope* register_allocator_;
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_GENERATOR_H_