Fix missing tagging of stack value in finally block.

src/x64/full-codegen-x64.cc

 // Copyright 2012 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
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4459 matching lines @@
 
   // Store pending message while executing finally block.
   ExternalReference pending_message_obj =
       ExternalReference::address_of_pending_message_obj(isolate());
   __ Load(rdx, pending_message_obj);
   __ push(rdx);
 
   ExternalReference has_pending_message =
       ExternalReference::address_of_has_pending_message(isolate());
   __ Load(rdx, has_pending_message);
+  __ Integer32ToSmi(rdx, rdx);
   __ push(rdx);
 
   ExternalReference pending_message_script =
       ExternalReference::address_of_pending_message_script(isolate());
   __ Load(rdx, pending_message_script);
   __ push(rdx);
 }
 
 
 void FullCodeGenerator::ExitFinallyBlock() {
   ASSERT(!result_register().is(rdx));
   ASSERT(!result_register().is(rcx));
   // Restore pending message from stack.
   __ pop(rdx);
   ExternalReference pending_message_script =
       ExternalReference::address_of_pending_message_script(isolate());
   __ Store(pending_message_script, rdx);
 
   __ pop(rdx);
+  __ SmiToInteger32(rdx, rdx);
   ExternalReference has_pending_message =
       ExternalReference::address_of_has_pending_message(isolate());
   __ Store(has_pending_message, rdx);
 
   __ pop(rdx);
   ExternalReference pending_message_obj =
       ExternalReference::address_of_pending_message_obj(isolate());
   __ Store(pending_message_obj, rdx);
 
   // Restore result register from stack.
@@ skipping 34 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64