Use temporary variable for StoreIndexed that returns a value.

runtime/vm/intermediate_language.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/object.h"
 #include "vm/os.h"
@@ skipping 363 matching lines @@
 
 RawAbstractType* NativeCallComp::StaticType() const {
   // The result type of the native function is identical to the result type of
   // the enclosing native Dart function. However, we prefer to check the type
   // of the value returned from the native call.
   return Type::DynamicType();
 }
 
 
 RawAbstractType* StoreIndexedComp::StaticType() const {
-  return value()->StaticType();
+  UNREACHABLE();
+  return AbstractType::null();
 }
 
 
 RawAbstractType* InstanceSetterComp::StaticType() const {
   return value()->StaticType();
 }
 
 
 RawAbstractType* StaticSetterComp::StaticType() const {
   const AbstractType& assigned_value_type =
@@ skipping 143 matching lines @@
 }
 
 
 RawAbstractType* BinaryOpComp::StaticType() const {
   // TODO(srdjan): Compute based on input types (ICData).
   return Type::DynamicType();
 }
 
 
 }  // namespace dart