Refactor building of StoreStaticField and StoreLocal to manually preserve value.

runtime/vm/parser.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/parser.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/compiler_stats.h"
@@ skipping 6726 matching lines @@
   return *expr;
 }
 
 
 // Ensure that the expression temp is allocated for nodes that may need it.
 AstNode* Parser::CreateAssignmentNode(AstNode* original, AstNode* rhs) {
   AstNode* result = original->MakeAssignmentNode(rhs);
   if ((result != NULL) &&
       (result->IsStoreIndexedNode() ||
        result->IsInstanceSetterNode() ||
-       result->IsStaticSetterNode())) {
+       result->IsStaticSetterNode() ||
+       result->IsStoreStaticFieldNode() ||
+       result->IsStoreLocalNode())) {
     EnsureExpressionTemp();
   }
   return result;
 }
 
 
 AstNode* Parser::ParseCascades(AstNode* expr) {
   intptr_t cascade_pos = TokenPos();
   LocalVariable* cascade_receiver_var =
       CreateTempConstVariable(cascade_pos, "casc");
@@ skipping 2679 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart