[es6] Correct parsing of regular expression literal flags.

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 "src/code-factory.h"
 #include "src/compiler.h"
 #include "src/compiler/interpreter-assembler.h"
 #include "src/factory.h"
@@ skipping 1293 matching lines @@
   Node* accumulator = __ GetAccumulator();
   Node* undefined_value =
       __ HeapConstant(isolate_->factory()->undefined_value());
   Node* index = __ BytecodeOperandIdx(0);
   Node* constant = __ LoadConstantPoolEntry(index);
   Node* relative_jump = __ SmiUntag(constant);
   __ JumpIfWordEqual(accumulator, undefined_value, relative_jump);
 }
 
 
-// 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();
   Node* literal_index_raw = __ BytecodeOperandIdx(0);
   Node* literal_index = __ SmiTag(literal_index_raw);
   Node* flags_raw = __ BytecodeOperandImm(1);
   Node* flags = __ SmiTag(flags_raw);
   Node* closure = __ LoadRegister(Register::function_closure());
   Node* result = __ CallRuntime(function_id, closure, literal_index,
                                 constant_elements, flags);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 
+// 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
 // constant elements in the accumulator.
 void Interpreter::DoCreateArrayLiteral(
     compiler::InterpreterAssembler* assembler) {
   DoCreateLiteral(Runtime::kCreateArrayLiteral, assembler);
 }
 
 
@@ skipping 114 matching lines @@
   Node* cache_length = __ LoadFixedArrayElement(for_in_state, 3);
   Node* result = __ CallRuntime(Runtime::kForInDone, index, cache_length);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8