Fix Object.freeze, Object.observe wrt CountOperation and CompoundAssignment.

src/typing.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
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@@ skipping 370 matching lines @@
 
 
 void AstTyper::VisitAssignment(Assignment* expr) {
   // TODO(rossberg): Can we clean this up?
   if (expr->is_compound()) {
     // Collect type feedback.
     Expression* target = expr->target();
     Property* prop = target->AsProperty();
     if (prop != NULL) {
       prop->RecordTypeFeedback(oracle(), zone());
-      if (!prop->key()->IsPropertyName()) {  // i.e., keyed
-        expr->RecordTypeFeedback(oracle(), zone());
-      }
+      expr->RecordTypeFeedback(oracle(), zone());
     }
 
     RECURSE(Visit(expr->binary_operation()));
 
     NarrowType(expr, expr->binary_operation()->bounds());
   } else {
     // Collect type feedback.
     if (expr->target()->IsProperty()) {
       expr->RecordTypeFeedback(oracle(), zone());
     }
@@ skipping 293 matching lines @@
 void AstTyper::VisitModuleUrl(ModuleUrl* module) {
 }
 
 
 void AstTyper::VisitModuleStatement(ModuleStatement* stmt) {
   RECURSE(Visit(stmt->body()));
 }
 
 
 } }  // namespace v8::internal