[interpreter] Add CreateBlockContext bytecode

src/interpreter/interpreter.cc

 // 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.
 
 #include "src/interpreter/interpreter.h"
 
 #include <fstream>
 #include <memory>
 
 #include "src/ast/prettyprinter.h"
@@ skipping 1777 matching lines @@
     Node* tenured_raw = __ Word32And(
         flags, __ Int32Constant(CreateClosureFlags::PretenuredBit::kMask));
     Node* tenured = __ SmiTag(tenured_raw);
     Node* result = __ CallRuntime(Runtime::kInterpreterNewClosure, context,
                                   shared, tenured);
     __ SetAccumulator(result);
     __ Dispatch();
   }
 }
 
+// CreateBlockContext <index>
+//
+// Creates a new block context with the scope info constant at |index| and the
+// closure in the accumulator.
+void Interpreter::DoCreateBlockContext(InterpreterAssembler* assembler) {
+  Node* index = __ BytecodeOperandIdx(0);
+  Node* scope_info = __ LoadConstantPoolEntry(index);
+  Node* closure = __ GetAccumulator();
+  Node* context = __ GetContext();
+  __ SetAccumulator(
+      __ CallRuntime(Runtime::kPushBlockContext, context, scope_info, closure));
+  __ Dispatch();
+}
+
 // CreateFunctionContext <slots>
 //
 // Creates a new context with number of |slots| for the function closure.
 void Interpreter::DoCreateFunctionContext(InterpreterAssembler* assembler) {
   Node* closure = __ LoadRegister(Register::function_closure());
   Node* slots = __ BytecodeOperandIdx(0);
   Node* context = __ GetContext();
   __ SetAccumulator(
       FastNewFunctionContextStub::Generate(assembler, closure, slots, context));
   __ Dispatch();
@@ skipping 428 matching lines @@
   __ StoreObjectField(generator, JSGeneratorObject::kContinuationOffset,
       __ SmiTag(new_state));
   __ SetAccumulator(old_state);
 
   __ Dispatch();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8