[interpreter] Support for ES6 super keyword.

src/interpreter/bytecode-generator.h

Index: src/interpreter/bytecode-generator.h
diff --git a/src/interpreter/bytecode-generator.h b/src/interpreter/bytecode-generator.h
index 9fd4da63da00502cfe2901fa60618593db51d342..54c12119a5de8c8e12f6098411e8da46edd69021 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -65,9 +65,20 @@ class BytecodeGenerator final : public AstVisitor {
   // Helper visitors which perform common operations.
   Register VisitArguments(ZoneList<Expression*>* arguments);
 
+  // Visit a keyed super property load. The optional
+  // |opt_receiver_out| register will have the receiver stored to
+  // it. The loaded value is placed in the accumulator.

[rmcilroy, 2016/02/12 14:56:42]

s/it./it if it's a valid register./

[oth, 2016/02/12 16:50:33]

Done.

+  void VisitKeyedSuperPropertyLoad(Property* property,
+                                   Register opt_receiver_out);
+
+  // Visit a named super property load. The optional
+  // |opt_receiver_out| register will have the receiver stored to
+  // it. The loaded value is placed in the accumulator.

[rmcilroy, 2016/02/12 14:56:42]

ditto

[oth, 2016/02/12 16:50:33]

Done.

+  void VisitNamedSuperPropertyLoad(Property* property,
+                                   Register opt_receiver_out);
+
   void VisitPropertyLoad(Register obj, Property* expr);
   void VisitPropertyLoadForAccumulator(Register obj, Property* expr);
-

[rmcilroy, 2016/02/12 14:56:42]

nit - add back whitespace

[oth, 2016/02/12 16:50:33]

Done.

   void VisitVariableLoad(Variable* variable, FeedbackVectorSlot slot,
                          TypeofMode typeof_mode = NOT_INSIDE_TYPEOF);
   void VisitVariableLoadForAccumulatorValue(
@@ -78,6 +89,16 @@ class BytecodeGenerator final : public AstVisitor {
                                     TypeofMode typeof_mode = NOT_INSIDE_TYPEOF);
   void VisitVariableAssignment(Variable* variable, Token::Value op,
                                FeedbackVectorSlot slot);
+
+  MUST_USE_RESULT Register PrepareNamedSuperPropertyArguments(
+      SuperPropertyReference* super_property, Handle<Name> name);
+  MUST_USE_RESULT Register PrepareKeyedSuperPropertyArguments(
+      SuperPropertyReference* super_property, Expression* key);
+  void BuildNamedSuperPropertyLoad(Register receiver);
+  void BuildKeyedSuperPropertyLoad(Register receiver);
+  void BuildNamedSuperPropertyStore(Register receiver);
+  void BuildKeyedSuperPropertyStore(Register receiver);
+
   void BuildThrowIfHole(Handle<String> name);
   void BuildThrowIfNotHole(Handle<String> name);
   void BuildThrowReassignConstant(Handle<String> name);
@@ -86,6 +107,7 @@ class BytecodeGenerator final : public AstVisitor {
 
   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,
@@ -128,6 +150,10 @@ class BytecodeGenerator final : public AstVisitor {
   bool IsInsideTryCatch() const { return try_catch_nesting_level_ > 0; }
   bool IsInsideTryFinally() const { return try_finally_nesting_level_ > 0; }
 
+  // Initialize an array of temporary registers with consecutive registers.
+  template <size_t N>
+  void InitializeWithConsecutiveRegisters(Register (&registers)[N]);

[rmcilroy, 2016/02/12 14:56:42]

This should probably live in the register allocator.

[oth, 2016/02/12 16:50:33]

Done.

+
   inline void set_builder(BytecodeArrayBuilder* builder) { builder_ = builder; }
   inline BytecodeArrayBuilder* builder() const { return builder_; }