6786195: many nsk.monitoring tests fail with -server -Xcomp

Summary: remove Universe::_fillerArrayKlassObj and associated code
Reviewed-by: jmasa, tonyp

src/share/vm/gc_interface/collectedHeap.cpp

@@ -178,8 +178,7 @@ CollectedHeap::fill_with_array(HeapWord* start, size_t words)
 
   // Set the length first for concurrent GC.
   ((arrayOop)start)->set_length((int)len);
-  post_allocation_setup_common(Universe::fillerArrayKlassObj(), start,
-                               words);
+  post_allocation_setup_common(Universe::intArrayKlassObj(), start, words);
   DEBUG_ONLY(zap_filler_array(start, words);)
 }
 

src/share/vm/memory/universe.cpp

@@ -49,7 +49,6 @@ klassOop Universe::_constantPoolKlassObj              = NULL;
 klassOop Universe::_constantPoolCacheKlassObj         = NULL;
 klassOop Universe::_compiledICHolderKlassObj          = NULL;
 klassOop Universe::_systemObjArrayKlassObj            = NULL;
-klassOop Universe::_fillerArrayKlassObj               = NULL;
 oop Universe::_int_mirror                             = NULL;
 oop Universe::_float_mirror                           = NULL;
 oop Universe::_double_mirror                          = NULL;
@@ -127,7 +126,6 @@ void Universe::system_classes_do(void f(klassOop)) {
   f(instanceKlassKlassObj());
   f(constantPoolKlassObj());
   f(systemObjArrayKlassObj());
-  f(fillerArrayKlassObj());
 }
 
 void Universe::oops_do(OopClosure* f, bool do_all) {
@@ -182,7 +180,6 @@ void Universe::oops_do(OopClosure* f, bool do_all) {
   f->do_oop((oop*)&_constantPoolCacheKlassObj);
   f->do_oop((oop*)&_compiledICHolderKlassObj);
   f->do_oop((oop*)&_systemObjArrayKlassObj);
-  f->do_oop((oop*)&_fillerArrayKlassObj);
   f->do_oop((oop*)&_the_empty_byte_array);
   f->do_oop((oop*)&_the_empty_short_array);
   f->do_oop((oop*)&_the_empty_int_array);
@@ -268,7 +265,6 @@ void Universe::genesis(TRAPS) {
 
         _compiledICHolderKlassObj   = compiledICHolderKlass::create_klass(CHECK);
         _systemObjArrayKlassObj     = objArrayKlassKlass::cast(objArrayKlassKlassObj())->allocate_system_objArray_klass(CHECK);
-        _fillerArrayKlassObj        = typeArrayKlass::create_klass(T_INT, sizeof(jint), "<filler>", CHECK);
 
         _the_empty_byte_array       = oopFactory::new_permanent_byteArray(0, CHECK);
         _the_empty_short_array      = oopFactory::new_permanent_shortArray(0, CHECK);

src/share/vm/memory/universe.hpp

@@ -133,7 +133,6 @@ class Universe: AllStatic {
   static klassOop _constantPoolCacheKlassObj;
   static klassOop _compiledICHolderKlassObj;
   static klassOop _systemObjArrayKlassObj;
-  static klassOop _fillerArrayKlassObj;
 
   // Known objects in the VM
 
@@ -266,7 +265,6 @@ class Universe: AllStatic {
   static klassOop constantPoolCacheKlassObj()         { return _constantPoolCacheKlassObj; }
   static klassOop compiledICHolderKlassObj()          { return _compiledICHolderKlassObj;  }
   static klassOop systemObjArrayKlassObj()            { return _systemObjArrayKlassObj;    }
-  static klassOop fillerArrayKlassObj()               { return _fillerArrayKlassObj;       }
 
   // Known objects in tbe VM
   static oop int_mirror()                   { return check_mirror(_int_mirror);