Precompilation: Have instances calls load the entry point and Code object from the ic data array in…

runtime/vm/snapshot.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/snapshot.h"
 
 #include "platform/assert.h"
 #include "vm/bootstrap.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart.h"
@@ skipping 609 matching lines @@
     for (intptr_t i = 0; i <= num_flds; i++) {
       *(object_store->from() + i) = ReadObjectImpl(kAsInlinedObject);
     }
     for (intptr_t i = 0; i < backward_references_->length(); i++) {
       if (!(*backward_references_)[i].is_deserialized()) {
         ReadObjectImpl(kAsInlinedObject);
         (*backward_references_)[i].set_state(kIsDeserialized);
       }
     }
 
+    if (snapshot_code()) {
+      ICData& ic = ICData::Handle();

[srdjan, 2016/03/15 19:15:48]

Get zone (thread->zone()) and use it for handle creation

[rmacnak, 2016/03/16 18:21:32]

Done.

+      Object& funcOrCode = Object::Handle();
+      Code& code = Code::Handle();
+      Smi& entry_point = Smi::Handle();
+      for (intptr_t i = 0; i < backward_references_->length(); i++) {
+        if ((*backward_references_)[i].reference()->IsICData()) {
+          ic ^= (*backward_references_)[i].reference()->raw();
+          for (intptr_t j = 0; j < ic.NumberOfChecks(); j++) {
+            funcOrCode = ic.GetTargetOrCodeAt(j);
+            if (funcOrCode.IsCode()) {
+              code ^= funcOrCode.raw();
+              entry_point = reinterpret_cast<RawSmi*>(code.EntryPoint());
+              ic.SetEntryPointAt(j, entry_point);
+            }
+          }
+        }
+      }
+    }
+
+
     // Validate the class table.
 #if defined(DEBUG)
     isolate->ValidateClassTable();
 #endif
 
     // Setup native resolver for bootstrap impl.
     Bootstrap::SetupNativeResolver();
     return ApiError::null();
   }
 }
@@ skipping 2035 matching lines @@
   if (setjmp(*jump.Set()) == 0) {
     NoSafepointScope no_safepoint;
     WriteObject(obj.raw());
   } else {
     ThrowException(exception_type(), exception_msg());
   }
 }
 
 
 }  // namespace dart