[es6] Correct parsing of regular expression literal flags.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index cf3f76ad58d1ab978c4eae9416f667bd3bd7b1c9..0c55ae79270af27e3fe3c0102795dc2aaa3f3435 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -1311,25 +1311,6 @@ void Interpreter::DoJumpIfUndefinedConstant(
 }
 
 
-// CreateRegExpLiteral <idx> <flags_reg>
-//
-// Creates a regular expression literal for literal index <idx> with flags held
-// in <flags_reg> and the pattern in the accumulator.
-void Interpreter::DoCreateRegExpLiteral(
-    compiler::InterpreterAssembler* assembler) {
-  Node* pattern = __ GetAccumulator();
-  Node* literal_index_raw = __ BytecodeOperandIdx(0);
-  Node* literal_index = __ SmiTag(literal_index_raw);
-  Node* flags_reg = __ BytecodeOperandReg(1);
-  Node* flags = __ LoadRegister(flags_reg);
-  Node* closure = __ LoadRegister(Register::function_closure());
-  Node* result = __ CallRuntime(Runtime::kCreateRegExpLiteral, closure,
-                                literal_index, pattern, flags);
-  __ SetAccumulator(result);
-  __ Dispatch();
-}
-
-
 void Interpreter::DoCreateLiteral(Runtime::FunctionId function_id,
                                   compiler::InterpreterAssembler* assembler) {
   Node* constant_elements = __ GetAccumulator();
@@ -1345,6 +1326,16 @@ void Interpreter::DoCreateLiteral(Runtime::FunctionId function_id,
 }
 
 
+// CreateRegExpLiteral <idx> <flags>
+//
+// Creates a regular expression literal for literal index <idx> with <flags> and
+// the pattern in the accumulator.
+void Interpreter::DoCreateRegExpLiteral(
+    compiler::InterpreterAssembler* assembler) {
+  DoCreateLiteral(Runtime::kCreateRegExpLiteral, assembler);
+}
+
+
 // CreateArrayLiteral <idx> <flags>
 //
 // Creates an array literal for literal index <idx> with flags <flags> and