The memory size test makes no sense on the simulated platforms.

test/cctest/test-mark-compact.cc

 // Copyright 2006-2008 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 436 matching lines @@
 
   TestRetainedObjectInfo info;
   global_handles->AddObjectGroup(NULL, 0, &info);
   ASSERT(info.has_been_disposed());
 
   global_handles->AddImplicitReferences(
         Handle<HeapObject>::cast(object).location(), NULL, 0);
 }
 
 
-#ifdef __linux__
+// Here is a memory use test that uses /proc, and is therefore Linux-only.  We
+// do not care how much memory the simulator uses, since it is only there for
+// debugging purposes.
+#if defined(__linux__) && !defined(USE_SIMULATOR)
 
 
 static uintptr_t ReadLong(char* buffer, intptr_t* position, int base) {
   char* end_address = buffer + *position;
   uintptr_t result = strtoul(buffer + *position, &end_address, base);
   CHECK(result != ULONG_MAX || errno != ERANGE);
   CHECK(end_address > buffer + *position);
   *position = end_address - buffer;
   return result;
 }
@@ skipping 57 matching lines @@
   intptr_t initial_memory = MemoryInUse();
   // Only Linux has the proc filesystem and only if it is mapped.  If it's not
   // there we just skip the test.
   if (initial_memory >= 0) {
     InitializeVM();
     intptr_t booted_memory = MemoryInUse();
     CHECK_LE(booted_memory - initial_memory, 16 * 1024 * 1024);
   }
 }
 
-#endif  // __linux__
+#endif  // __linux__ and !USE_SIMULATOR