Code patching support and tests for new inline caches.

runtime/vm/ic_data.cc

 // Copyright (c) 2011, 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/ic_data.h"
 #include "vm/object.h"
 
 namespace dart {
 
 // ICData is a ValueObject, therefore 'data' need not be a ZoneObject.
 ICData::ICData(const Array& data) : data_(&data) {
+  // Check consistency.
+  ASSERT(!String::Handle(FunctionName()).IsNull());
+  ASSERT(NumberOfArgumentsChecked() > 0);
 }
 
 
 ICData::ICData(const String& function_name, intptr_t num_args_checked)
     : data_(NULL) {
   // Array contains: function-name, num_checked, NULL check sentinel (classes,
   // target).
   const intptr_t len = kChecksStartIndex + (num_args_checked + 1);
   data_ = &Array::ZoneHandle(Array::New(len, Heap::kOld));
   data_->SetAt(kNameIndex, function_name);
@@ skipping 72 matching lines @@
   intptr_t pos = 1 + 1 + ArrayElementsPerCheck() * index;
   for (intptr_t i = 0; i < NumberOfArgumentsChecked(); i++) {
     Class& cls = Class::ZoneHandle();
     cls ^= data_->At(pos++);
     classes->Add(&cls);
   }
   (*target) ^= data_->At(pos);
 }
 
 }  // namespace dart