[Interpreter] Add support for RegExp literals.

src/interpreter/bytecode-generator.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/bytecode-generator.h"
 
 #include <stack>
 
 #include "src/compiler.h"
 #include "src/interpreter/control-flow-builders.h"
@@ skipping 485 matching lines @@
     builder()->LoadNull();
   } else if (value->IsTheHole()) {
     builder()->LoadTheHole();
   } else {
     builder()->LoadLiteral(value);
   }
 }
 
 
 void BytecodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) {
-  UNIMPLEMENTED();
+  // Materialize a regular expression literal.
+  TemporaryRegisterScope temporary_register_scope(builder());
+  Register flags = temporary_register_scope.NewRegister();
+  builder()
+      ->LoadLiteral(expr->flags())
+      .StoreAccumulatorInRegister(flags)
+      .LoadLiteral(expr->pattern())
+      .CreateRegExpLiteral(expr->literal_index(), flags);
 }
 
 
 void BytecodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) {
   // Deep-copy the literal boilerplate.
   builder()
       ->LoadLiteral(expr->constant_properties())
       .CreateObjectLiteral(expr->literal_index(), expr->ComputeFlags(true));
 
   TemporaryRegisterScope temporary_register_scope(builder());
@@ skipping 748 matching lines @@
 }
 
 
 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const {
   return info()->feedback_vector()->GetIndex(slot);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8