[Interpreter] Add support for RegExp literals.

test/unittests/interpreter/bytecode-array-builder-unittest.cc

Index: test/unittests/interpreter/bytecode-array-builder-unittest.cc
diff --git a/test/unittests/interpreter/bytecode-array-builder-unittest.cc b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
index 16dd47d1d14472edd4056751fb0a178fd703ba98..a596683c1304c1289c46c1abb5adc38276d9a106 100644
--- a/test/unittests/interpreter/bytecode-array-builder-unittest.cc
+++ b/test/unittests/interpreter/bytecode-array-builder-unittest.cc
@@ -63,7 +63,8 @@ TEST_F(BytecodeArrayBuilderTest, AllBytecodesGenerated) {
   builder.CreateClosure(NOT_TENURED);
 
   // Emit literal creation operations
-  builder.CreateArrayLiteral(0, 0)
+  builder.CreateRegExpLiteral(0, reg)
+      .CreateArrayLiteral(0, 0)
       .CreateObjectLiteral(0, 0);
 
   // Call operations.