changeset 12194:a09fe9d1e016 hs25-b50

Merge
author amurillo
date Fri, 13 Sep 2013 00:25:18 -0700
parents 9cd0183fe325 0821b5d72ca8
children 85072013aad4
files
diffstat 50 files changed, 2174 insertions(+), 114 deletions(-) [+]
line wrap: on
line diff
--- a/make/hotspot_version	Thu Sep 12 11:08:59 2013 -0700
+++ b/make/hotspot_version	Fri Sep 13 00:25:18 2013 -0700
@@ -35,7 +35,7 @@
 
 HS_MAJOR_VER=25
 HS_MINOR_VER=0
-HS_BUILD_NUMBER=49
+HS_BUILD_NUMBER=50
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=8
--- a/src/cpu/sparc/vm/c2_globals_sparc.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/cpu/sparc/vm/c2_globals_sparc.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -57,6 +57,7 @@
 define_pd_global(bool, UseTLAB,                      true);
 define_pd_global(bool, ResizeTLAB,                   true);
 define_pd_global(intx, LoopUnrollLimit,              60); // Design center runs on 1.3.1
+define_pd_global(intx, MinJumpTableSize,             5);
 
 // Peephole and CISC spilling both break the graph, and so makes the
 // scheduler sick.
--- a/src/cpu/x86/vm/c2_globals_x86.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/cpu/x86/vm/c2_globals_x86.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -30,7 +30,6 @@
 
 // Sets the default values for platform dependent flags used by the server compiler.
 // (see c2_globals.hpp).  Alpha-sorted.
-
 define_pd_global(bool, BackgroundCompilation,        true);
 define_pd_global(bool, UseTLAB,                      true);
 define_pd_global(bool, ResizeTLAB,                   true);
@@ -52,6 +51,7 @@
 define_pd_global(intx, ConditionalMoveLimit,         3);
 define_pd_global(intx, FLOATPRESSURE,                6);
 define_pd_global(intx, FreqInlineSize,               325);
+define_pd_global(intx, MinJumpTableSize,             10);
 #ifdef AMD64
 define_pd_global(intx, INTPRESSURE,                  13);
 define_pd_global(intx, InteriorEntryAlignment,       16);
--- a/src/share/vm/ci/ciArray.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciArray.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -24,13 +24,92 @@
 
 #include "precompiled.hpp"
 #include "ci/ciArray.hpp"
+#include "ci/ciArrayKlass.hpp"
+#include "ci/ciConstant.hpp"
 #include "ci/ciKlass.hpp"
 #include "ci/ciUtilities.hpp"
+#include "oops/objArrayOop.hpp"
+#include "oops/typeArrayOop.hpp"
 
 // ciArray
 //
 // This class represents an arrayOop in the HotSpot virtual
 // machine.
+static BasicType fixup_element_type(BasicType bt) {
+  if (bt == T_ARRAY)    return T_OBJECT;
+  if (bt == T_BOOLEAN)  return T_BYTE;
+  return bt;
+}
+
+ciConstant ciArray::element_value_impl(BasicType elembt,
+                                       arrayOop ary,
+                                       int index) {
+  if (ary == NULL)
+    return ciConstant();
+  assert(ary->is_array(), "");
+  if (index < 0 || index >= ary->length())
+    return ciConstant();
+  ArrayKlass* ak = (ArrayKlass*) ary->klass();
+  BasicType abt = ak->element_type();
+  if (fixup_element_type(elembt) !=
+      fixup_element_type(abt))
+    return ciConstant();
+  switch (elembt) {
+  case T_ARRAY:
+  case T_OBJECT:
+    {
+      assert(ary->is_objArray(), "");
+      objArrayOop objary = (objArrayOop) ary;
+      oop elem = objary->obj_at(index);
+      ciEnv* env = CURRENT_ENV;
+      ciObject* box = env->get_object(elem);
+      return ciConstant(T_OBJECT, box);
+    }
+  }
+  assert(ary->is_typeArray(), "");
+  typeArrayOop tary = (typeArrayOop) ary;
+  jint value = 0;
+  switch (elembt) {
+  case T_LONG:          return ciConstant(tary->long_at(index));
+  case T_FLOAT:         return ciConstant(tary->float_at(index));
+  case T_DOUBLE:        return ciConstant(tary->double_at(index));
+  default:              return ciConstant();
+  case T_BYTE:          value = tary->byte_at(index);           break;
+  case T_BOOLEAN:       value = tary->byte_at(index) & 1;       break;
+  case T_SHORT:         value = tary->short_at(index);          break;
+  case T_CHAR:          value = tary->char_at(index);           break;
+  case T_INT:           value = tary->int_at(index);            break;
+  }
+  return ciConstant(elembt, value);
+}
+
+// ------------------------------------------------------------------
+// ciArray::element_value
+//
+// Current value of an element.
+// Returns T_ILLEGAL if there is no element at the given index.
+ciConstant ciArray::element_value(int index) {
+  BasicType elembt = element_basic_type();
+  GUARDED_VM_ENTRY(
+    return element_value_impl(elembt, get_arrayOop(), index);
+  )
+}
+
+// ------------------------------------------------------------------
+// ciArray::element_value_by_offset
+//
+// Current value of an element at the specified offset.
+// Returns T_ILLEGAL if there is no element at the given offset.
+ciConstant ciArray::element_value_by_offset(intptr_t element_offset) {
+  BasicType elembt = element_basic_type();
+  intptr_t shift  = exact_log2(type2aelembytes(elembt));
+  intptr_t header = arrayOopDesc::base_offset_in_bytes(elembt);
+  intptr_t index = (element_offset - header) >> shift;
+  intptr_t offset = header + ((intptr_t)index << shift);
+  if (offset != element_offset || index != (jint)index)
+    return ciConstant();
+  return element_value((jint) index);
+}
 
 // ------------------------------------------------------------------
 // ciArray::print_impl
--- a/src/share/vm/ci/ciArray.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciArray.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -25,6 +25,8 @@
 #ifndef SHARE_VM_CI_CIARRAY_HPP
 #define SHARE_VM_CI_CIARRAY_HPP
 
+#include "ci/ciArrayKlass.hpp"
+#include "ci/ciConstant.hpp"
 #include "ci/ciObject.hpp"
 #include "oops/arrayOop.hpp"
 #include "oops/objArrayOop.hpp"
@@ -45,15 +47,30 @@
 
   ciArray(ciKlass* klass, int len) : ciObject(klass), _length(len) {}
 
-  arrayOop get_arrayOop() { return (arrayOop)get_oop(); }
+  arrayOop get_arrayOop() const { return (arrayOop)get_oop(); }
 
   const char* type_string() { return "ciArray"; }
 
   void print_impl(outputStream* st);
 
+  ciConstant element_value_impl(BasicType elembt, arrayOop ary, int index);
+
 public:
   int length() { return _length; }
 
+  // Convenience routines.
+  ciArrayKlass* array_type()         { return klass()->as_array_klass(); }
+  ciType*       element_type()       { return array_type()->element_type(); }
+  BasicType     element_basic_type() { return element_type()->basic_type(); }
+
+  // Current value of an element.
+  // Returns T_ILLEGAL if there is no element at the given index.
+  ciConstant element_value(int index);
+
+  // Current value of an element at the specified offset.
+  // Returns T_ILLEGAL if there is no element at the given offset.
+  ciConstant element_value_by_offset(intptr_t element_offset);
+
   // What kind of ciObject is this?
   bool is_array()        { return true; }
   bool is_java_object()  { return true; }
--- a/src/share/vm/ci/ciConstant.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciConstant.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -41,7 +41,6 @@
   union {
     jint      _int;
     jlong     _long;
-    jint      _long_half[2];
     jfloat    _float;
     jdouble   _double;
     ciObject* _object;
@@ -111,6 +110,20 @@
     return _value._object;
   }
 
+  bool      is_null_or_zero() const {
+    if (!is_java_primitive(basic_type())) {
+      return as_object()->is_null_object();
+    } else if (type2size[basic_type()] == 1) {
+      // treat float bits as int, to avoid comparison with -0 and NaN
+      return (_value._int == 0);
+    } else if (type2size[basic_type()] == 2) {
+      // treat double bits as long, to avoid comparison with -0 and NaN
+      return (_value._long == 0);
+    } else {
+      return false;
+    }
+  }
+
   // Debugging output
   void print();
 };
--- a/src/share/vm/ci/ciField.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciField.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -189,12 +189,14 @@
   _holder = CURRENT_ENV->get_instance_klass(fd->field_holder());
 
   // Check to see if the field is constant.
-  if (_holder->is_initialized() && this->is_final()) {
+  bool is_final = this->is_final();
+  bool is_stable = FoldStableValues && this->is_stable();
+  if (_holder->is_initialized() && (is_final || is_stable)) {
     if (!this->is_static()) {
       // A field can be constant if it's a final static field or if
       // it's a final non-static field of a trusted class (classes in
       // java.lang.invoke and sun.invoke packages and subpackages).
-      if (trust_final_non_static_fields(_holder)) {
+      if (is_stable || trust_final_non_static_fields(_holder)) {
         _is_constant = true;
         return;
       }
@@ -227,7 +229,6 @@
 
     Handle mirror = k->java_mirror();
 
-    _is_constant = true;
     switch(type()->basic_type()) {
     case T_BYTE:
       _constant_value = ciConstant(type()->basic_type(), mirror->byte_field(_offset));
@@ -273,6 +274,12 @@
         }
       }
     }
+    if (is_stable && _constant_value.is_null_or_zero()) {
+      // It is not a constant after all; treat it as uninitialized.
+      _is_constant = false;
+    } else {
+      _is_constant = true;
+    }
   } else {
     _is_constant = false;
   }
@@ -373,8 +380,11 @@
   tty->print(" signature=");
   _signature->print_symbol();
   tty->print(" offset=%d type=", _offset);
-  if (_type != NULL) _type->print_name();
-  else               tty->print("(reference)");
+  if (_type != NULL)
+    _type->print_name();
+  else
+    tty->print("(reference)");
+  tty->print(" flags=%04x", flags().as_int());
   tty->print(" is_constant=%s", bool_to_str(_is_constant));
   if (_is_constant && is_static()) {
     tty->print(" constant_value=");
--- a/src/share/vm/ci/ciField.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciField.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -139,7 +139,10 @@
   //      non-constant fields.  These are java.lang.System.in
   //      and java.lang.System.out.  Abomination.
   //
-  // Note: the check for case 4 is not yet implemented.
+  // A field is also considered constant if it is marked @Stable
+  // and is non-null (or non-zero, if a primitive).
+  // For non-static fields, the null/zero check must be
+  // arranged by the user, as constant_value().is_null_or_zero().
   bool is_constant() { return _is_constant; }
 
   // Get the constant value of this field.
@@ -173,6 +176,7 @@
   bool is_protected   () { return flags().is_protected(); }
   bool is_static      () { return flags().is_static(); }
   bool is_final       () { return flags().is_final(); }
+  bool is_stable      () { return flags().is_stable(); }
   bool is_volatile    () { return flags().is_volatile(); }
   bool is_transient   () { return flags().is_transient(); }
 
--- a/src/share/vm/ci/ciFlags.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciFlags.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -59,6 +59,7 @@
   bool is_interface   () const         { return (_flags & JVM_ACC_INTERFACE   ) != 0; }
   bool is_abstract    () const         { return (_flags & JVM_ACC_ABSTRACT    ) != 0; }
   bool is_strict      () const         { return (_flags & JVM_ACC_STRICT      ) != 0; }
+  bool is_stable      () const         { return (_flags & JVM_ACC_FIELD_STABLE) != 0; }
 
   // Conversion
   jint   as_int()                      { return _flags; }
--- a/src/share/vm/ci/ciInstance.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciInstance.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -127,6 +127,8 @@
 ciConstant ciInstance::field_value_by_offset(int field_offset) {
   ciInstanceKlass* ik = klass()->as_instance_klass();
   ciField* field = ik->get_field_by_offset(field_offset, false);
+  if (field == NULL)
+    return ciConstant();  // T_ILLEGAL
   return field_value(field);
 }
 
--- a/src/share/vm/ci/ciTypeArray.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/ci/ciTypeArray.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -39,5 +39,10 @@
 jchar ciTypeArray::char_at(int index) {
   VM_ENTRY_MARK;
   assert(index >= 0 && index < length(), "out of range");
-  return get_typeArrayOop()->char_at(index);
+  jchar c = get_typeArrayOop()->char_at(index);
+#ifdef ASSERT
+  jchar d = element_value(index).as_char();
+  assert(c == d, "");
+#endif //ASSERT
+  return c;
 }
--- a/src/share/vm/classfile/classFileParser.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/classfile/classFileParser.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -1774,6 +1774,10 @@
     if (_location != _in_method)  break;  // only allow for methods
     if (!privileged)              break;  // only allow in privileged code
     return _method_LambdaForm_Hidden;
+  case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_invoke_Stable_signature):
+    if (_location != _in_field)   break;  // only allow for fields
+    if (!privileged)              break;  // only allow in privileged code
+    return _field_Stable;
   case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_misc_Contended_signature):
     if (_location != _in_field && _location != _in_class)          break;  // only allow for fields and classes
     if (!EnableContended || (RestrictContended && !privileged))    break;  // honor privileges
@@ -1786,6 +1790,8 @@
 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) {
   if (is_contended())
     f->set_contended_group(contended_group());
+  if (is_stable())
+    f->set_stable(true);
 }
 
 ClassFileParser::FieldAnnotationCollector::~FieldAnnotationCollector() {
--- a/src/share/vm/classfile/classFileParser.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/classfile/classFileParser.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -125,6 +125,7 @@
       _method_LambdaForm_Compiled,
       _method_LambdaForm_Hidden,
       _sun_misc_Contended,
+      _field_Stable,
       _annotation_LIMIT
     };
     const Location _location;
@@ -143,14 +144,23 @@
       assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
       _annotations_present |= nth_bit((int)id);
     }
+
+    void remove_annotation(ID id) {
+      assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
+      _annotations_present &= ~nth_bit((int)id);
+    }
+
     // Report if the annotation is present.
-    bool has_any_annotations() { return _annotations_present != 0; }
-    bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; }
+    bool has_any_annotations() const { return _annotations_present != 0; }
+    bool has_annotation(ID id) const { return (nth_bit((int)id) & _annotations_present) != 0; }
 
     void set_contended_group(u2 group) { _contended_group = group; }
-    u2 contended_group() { return _contended_group; }
+    u2 contended_group() const { return _contended_group; }
 
-    bool is_contended() { return has_annotation(_sun_misc_Contended); }
+    bool is_contended() const { return has_annotation(_sun_misc_Contended); }
+
+    void set_stable(bool stable) { set_annotation(_field_Stable); }
+    bool is_stable() const { return has_annotation(_field_Stable); }
   };
 
   // This class also doubles as a holder for metadata cleanup.
--- a/src/share/vm/classfile/vmSymbols.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/classfile/vmSymbols.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -270,6 +270,7 @@
   template(java_lang_invoke_LambdaForm,               "java/lang/invoke/LambdaForm")              \
   template(java_lang_invoke_ForceInline_signature,    "Ljava/lang/invoke/ForceInline;")           \
   template(java_lang_invoke_DontInline_signature,     "Ljava/lang/invoke/DontInline;")            \
+  template(sun_invoke_Stable_signature,               "Lsun/invoke/Stable;")                      \
   template(java_lang_invoke_LambdaForm_Compiled_signature, "Ljava/lang/invoke/LambdaForm$Compiled;") \
   template(java_lang_invoke_LambdaForm_Hidden_signature, "Ljava/lang/invoke/LambdaForm$Hidden;")  \
   template(java_lang_invoke_MagicLambdaImpl,          "java/lang/invoke/MagicLambdaImpl")         \
--- a/src/share/vm/oops/fieldInfo.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/oops/fieldInfo.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -240,6 +240,14 @@
     return (access_flags() & JVM_ACC_FIELD_INTERNAL) != 0;
   }
 
+  bool is_stable() const {
+    return (access_flags() & JVM_ACC_FIELD_STABLE) != 0;
+  }
+  void set_stable(bool z) {
+    if (z) _shorts[access_flags_offset] |=  JVM_ACC_FIELD_STABLE;
+    else   _shorts[access_flags_offset] &= ~JVM_ACC_FIELD_STABLE;
+  }
+
   Symbol* lookup_symbol(int symbol_index) const {
     assert(is_internal(), "only internal fields");
     return vmSymbols::symbol_at((vmSymbols::SID)symbol_index);
--- a/src/share/vm/opto/c2_globals.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/c2_globals.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -421,7 +421,7 @@
   product(bool, UseDivMod, true,                                            \
           "Use combined DivMod instruction if available")                   \
                                                                             \
-  product(intx, MinJumpTableSize, 18,                                       \
+  product_pd(intx, MinJumpTableSize,                                        \
           "Minimum number of targets in a generated jump table")            \
                                                                             \
   product(intx, MaxJumpTableSize, 65000,                                    \
@@ -448,6 +448,9 @@
   product(bool, EliminateAutoBox, true,                                     \
           "Control optimizations for autobox elimination")                  \
                                                                             \
+  experimental(bool, UseImplicitStableValues, false,                        \
+          "Mark well-known stable fields as such (e.g. String.value)")      \
+                                                                            \
   product(intx, AutoBoxCacheMax, 128,                                       \
           "Sets max value cached by the java.lang.Integer autobox cache")   \
                                                                             \
--- a/src/share/vm/opto/compile.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/compile.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -1297,6 +1297,10 @@
 
   // Array pointers need some flattening
   const TypeAryPtr *ta = tj->isa_aryptr();
+  if (ta && ta->is_stable()) {
+    // Erase stability property for alias analysis.
+    tj = ta = ta->cast_to_stable(false);
+  }
   if( ta && is_known_inst ) {
     if ( offset != Type::OffsetBot &&
          offset > arrayOopDesc::length_offset_in_bytes() ) {
@@ -1497,6 +1501,7 @@
   _index = i;
   _adr_type = at;
   _field = NULL;
+  _element = NULL;
   _is_rewritable = true; // default
   const TypeOopPtr *atoop = (at != NULL) ? at->isa_oopptr() : NULL;
   if (atoop != NULL && atoop->is_known_instance()) {
@@ -1615,6 +1620,16 @@
           && flat->is_instptr()->klass() == env()->Class_klass())
         alias_type(idx)->set_rewritable(false);
     }
+    if (flat->isa_aryptr()) {
+#ifdef ASSERT
+      const int header_size_min  = arrayOopDesc::base_offset_in_bytes(T_BYTE);
+      // (T_BYTE has the weakest alignment and size restrictions...)
+      assert(flat->offset() < header_size_min, "array body reference must be OffsetBot");
+#endif
+      if (flat->offset() == TypePtr::OffsetBot) {
+        alias_type(idx)->set_element(flat->is_aryptr()->elem());
+      }
+    }
     if (flat->isa_klassptr()) {
       if (flat->offset() == in_bytes(Klass::super_check_offset_offset()))
         alias_type(idx)->set_rewritable(false);
@@ -1677,7 +1692,7 @@
   else
     t = TypeOopPtr::make_from_klass_raw(field->holder());
   AliasType* atp = alias_type(t->add_offset(field->offset_in_bytes()), field);
-  assert(field->is_final() == !atp->is_rewritable(), "must get the rewritable bits correct");
+  assert((field->is_final() || field->is_stable()) == !atp->is_rewritable(), "must get the rewritable bits correct");
   return atp;
 }
 
--- a/src/share/vm/opto/compile.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/compile.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -72,6 +72,7 @@
 class StartNode;
 class SafePointNode;
 class JVMState;
+class Type;
 class TypeData;
 class TypePtr;
 class TypeOopPtr;
@@ -119,6 +120,7 @@
     int             _index;         // unique index, used with MergeMemNode
     const TypePtr*  _adr_type;      // normalized address type
     ciField*        _field;         // relevant instance field, or null if none
+    const Type*     _element;       // relevant array element type, or null if none
     bool            _is_rewritable; // false if the memory is write-once only
     int             _general_index; // if this is type is an instance, the general
                                     // type that this is an instance of
@@ -129,6 +131,7 @@
     int             index()         const { return _index; }
     const TypePtr*  adr_type()      const { return _adr_type; }
     ciField*        field()         const { return _field; }
+    const Type*     element()       const { return _element; }
     bool            is_rewritable() const { return _is_rewritable; }
     bool            is_volatile()   const { return (_field ? _field->is_volatile() : false); }
     int             general_index() const { return (_general_index != 0) ? _general_index : _index; }
@@ -137,7 +140,14 @@
     void set_field(ciField* f) {
       assert(!_field,"");
       _field = f;
-      if (f->is_final())  _is_rewritable = false;
+      if (f->is_final() || f->is_stable()) {
+        // In the case of @Stable, multiple writes are possible but may be assumed to be no-ops.
+        _is_rewritable = false;
+      }
+    }
+    void set_element(const Type* e) {
+      assert(_element == NULL, "");
+      _element = e;
     }
 
     void print_on(outputStream* st) PRODUCT_RETURN;
--- a/src/share/vm/opto/graphKit.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/graphKit.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -3825,8 +3825,13 @@
                                                    TypeAry::make(TypeInt::CHAR,TypeInt::POS),
                                                    ciTypeArrayKlass::make(T_CHAR), true, 0);
   int value_field_idx = C->get_alias_index(value_field_type);
-  return make_load(ctrl, basic_plus_adr(str, str, value_offset),
-                   value_type, T_OBJECT, value_field_idx);
+  Node* load = make_load(ctrl, basic_plus_adr(str, str, value_offset),
+                         value_type, T_OBJECT, value_field_idx);
+  // String.value field is known to be @Stable.
+  if (UseImplicitStableValues) {
+    load = cast_array_to_stable(load, value_type);
+  }
+  return load;
 }
 
 void GraphKit::store_String_offset(Node* ctrl, Node* str, Node* value) {
@@ -3844,9 +3849,6 @@
   const TypeInstPtr* string_type = TypeInstPtr::make(TypePtr::NotNull, C->env()->String_klass(),
                                                      false, NULL, 0);
   const TypePtr* value_field_type = string_type->add_offset(value_offset);
-  const TypeAryPtr*  value_type = TypeAryPtr::make(TypePtr::NotNull,
-                                                   TypeAry::make(TypeInt::CHAR,TypeInt::POS),
-                                                   ciTypeArrayKlass::make(T_CHAR), true, 0);
   int value_field_idx = C->get_alias_index(value_field_type);
   store_to_memory(ctrl, basic_plus_adr(str, value_offset),
                   value, T_OBJECT, value_field_idx);
@@ -3861,3 +3863,9 @@
   store_to_memory(ctrl, basic_plus_adr(str, count_offset),
                   value, T_INT, count_field_idx);
 }
+
+Node* GraphKit::cast_array_to_stable(Node* ary, const TypeAryPtr* ary_type) {
+  // Reify the property as a CastPP node in Ideal graph to comply with monotonicity
+  // assumption of CCP analysis.
+  return _gvn.transform(new(C) CastPPNode(ary, ary_type->cast_to_stable(true)));
+}
--- a/src/share/vm/opto/graphKit.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/graphKit.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -836,6 +836,9 @@
   // Insert a loop predicate into the graph
   void add_predicate(int nargs = 0);
   void add_predicate_impl(Deoptimization::DeoptReason reason, int nargs);
+
+  // Produce new array node of stable type
+  Node* cast_array_to_stable(Node* ary, const TypeAryPtr* ary_type);
 };
 
 // Helper class to support building of control flow branches. Upon
--- a/src/share/vm/opto/library_call.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/library_call.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -1280,6 +1280,11 @@
   const TypeAry* target_array_type = TypeAry::make(TypeInt::CHAR, TypeInt::make(0, target_length, Type::WidenMin));
   const TypeAryPtr* target_type = TypeAryPtr::make(TypePtr::BotPTR, target_array_type, target_array->klass(), true, Type::OffsetBot);
 
+  // String.value field is known to be @Stable.
+  if (UseImplicitStableValues) {
+    target = cast_array_to_stable(target, target_type);
+  }
+
   IdealKit kit(this, false, true);
 #define __ kit.
   Node* zero             = __ ConI(0);
--- a/src/share/vm/opto/memnode.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/memnode.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -962,6 +962,19 @@
   return (uintptr_t)in(Control) + (uintptr_t)in(Memory) + (uintptr_t)in(Address);
 }
 
+static bool skip_through_membars(Compile::AliasType* atp, const TypeInstPtr* tp, bool eliminate_boxing) {
+  if ((atp != NULL) && (atp->index() >= Compile::AliasIdxRaw)) {
+    bool non_volatile = (atp->field() != NULL) && !atp->field()->is_volatile();
+    bool is_stable_ary = FoldStableValues &&
+                         (tp != NULL) && (tp->isa_aryptr() != NULL) &&
+                         tp->isa_aryptr()->is_stable();
+
+    return (eliminate_boxing && non_volatile) || is_stable_ary;
+  }
+
+  return false;
+}
+
 //---------------------------can_see_stored_value------------------------------
 // This routine exists to make sure this set of tests is done the same
 // everywhere.  We need to make a coordinated change: first LoadNode::Ideal
@@ -976,11 +989,9 @@
   const TypeInstPtr* tp = phase->type(ld_adr)->isa_instptr();
   Compile::AliasType* atp = (tp != NULL) ? phase->C->alias_type(tp) : NULL;
   // This is more general than load from boxing objects.
-  if (phase->C->eliminate_boxing() && (atp != NULL) &&
-      (atp->index() >= Compile::AliasIdxRaw) &&
-      (atp->field() != NULL) && !atp->field()->is_volatile()) {
+  if (skip_through_membars(atp, tp, phase->C->eliminate_boxing())) {
     uint alias_idx = atp->index();
-    bool final = atp->field()->is_final();
+    bool final = !atp->is_rewritable();
     Node* result = NULL;
     Node* current = st;
     // Skip through chains of MemBarNodes checking the MergeMems for
@@ -1015,7 +1026,6 @@
     }
   }
 
-
   // Loop around twice in the case Load -> Initialize -> Store.
   // (See PhaseIterGVN::add_users_to_worklist, which knows about this case.)
   for (int trip = 0; trip <= 1; trip++) {
@@ -1577,6 +1587,40 @@
   return NULL;
 }
 
+// Try to constant-fold a stable array element.
+static const Type* fold_stable_ary_elem(const TypeAryPtr* ary, int off, BasicType loadbt) {
+  assert(ary->is_stable(), "array should be stable");
+
+  if (ary->const_oop() != NULL) {
+    // Decode the results of GraphKit::array_element_address.
+    ciArray* aobj = ary->const_oop()->as_array();
+    ciConstant con = aobj->element_value_by_offset(off);
+
+    if (con.basic_type() != T_ILLEGAL && !con.is_null_or_zero()) {
+      const Type* con_type = Type::make_from_constant(con);
+      if (con_type != NULL) {
+        if (con_type->isa_aryptr()) {
+          // Join with the array element type, in case it is also stable.
+          int dim = ary->stable_dimension();
+          con_type = con_type->is_aryptr()->cast_to_stable(true, dim-1);
+        }
+        if (loadbt == T_NARROWOOP && con_type->isa_oopptr()) {
+          con_type = con_type->make_narrowoop();
+        }
+#ifndef PRODUCT
+        if (TraceIterativeGVN) {
+          tty->print("FoldStableValues: array element [off=%d]: con_type=", off);
+          con_type->dump(); tty->cr();
+        }
+#endif //PRODUCT
+        return con_type;
+      }
+    }
+  }
+
+  return NULL;
+}
+
 //------------------------------Value-----------------------------------------
 const Type *LoadNode::Value( PhaseTransform *phase ) const {
   // Either input is TOP ==> the result is TOP
@@ -1591,8 +1635,31 @@
   Compile* C = phase->C;
 
   // Try to guess loaded type from pointer type
-  if (tp->base() == Type::AryPtr) {
-    const Type *t = tp->is_aryptr()->elem();
+  if (tp->isa_aryptr()) {
+    const TypeAryPtr* ary = tp->is_aryptr();
+    const Type *t = ary->elem();
+
+    // Determine whether the reference is beyond the header or not, by comparing
+    // the offset against the offset of the start of the array's data.
+    // Different array types begin at slightly different offsets (12 vs. 16).
+    // We choose T_BYTE as an example base type that is least restrictive
+    // as to alignment, which will therefore produce the smallest
+    // possible base offset.
+    const int min_base_off = arrayOopDesc::base_offset_in_bytes(T_BYTE);
+    const bool off_beyond_header = ((uint)off >= (uint)min_base_off);
+
+    // Try to constant-fold a stable array element.
+    if (FoldStableValues && ary->is_stable()) {
+      // Make sure the reference is not into the header
+      if (off_beyond_header && off != Type::OffsetBot) {
+        assert(adr->is_AddP() && adr->in(AddPNode::Offset)->is_Con(), "offset is a constant");
+        const Type* con_type = fold_stable_ary_elem(ary, off, memory_type());
+        if (con_type != NULL) {
+          return con_type;
+        }
+      }
+    }
+
     // Don't do this for integer types. There is only potential profit if
     // the element type t is lower than _type; that is, for int types, if _type is
     // more restrictive than t.  This only happens here if one is short and the other
@@ -1613,14 +1680,7 @@
         && Opcode() != Op_LoadKlass && Opcode() != Op_LoadNKlass) {
       // t might actually be lower than _type, if _type is a unique
       // concrete subclass of abstract class t.
-      // Make sure the reference is not into the header, by comparing
-      // the offset against the offset of the start of the array's data.
-      // Different array types begin at slightly different offsets (12 vs. 16).
-      // We choose T_BYTE as an example base type that is least restrictive
-      // as to alignment, which will therefore produce the smallest
-      // possible base offset.
-      const int min_base_off = arrayOopDesc::base_offset_in_bytes(T_BYTE);
-      if ((uint)off >= (uint)min_base_off) {  // is the offset beyond the header?
+      if (off_beyond_header) {  // is the offset beyond the header?
         const Type* jt = t->join(_type);
         // In any case, do not allow the join, per se, to empty out the type.
         if (jt->empty() && !t->empty()) {
--- a/src/share/vm/opto/parse.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/parse.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -518,7 +518,7 @@
 
   // loading from a constant field or the constant pool
   // returns false if push failed (non-perm field constants only, not ldcs)
-  bool push_constant(ciConstant con, bool require_constant = false, bool is_autobox_cache = false);
+  bool push_constant(ciConstant con, bool require_constant = false, bool is_autobox_cache = false, const Type* basic_type = NULL);
 
   // implementation of object creation bytecodes
   void emit_guard_for_new(ciInstanceKlass* klass);
--- a/src/share/vm/opto/parse3.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/parse3.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -147,7 +147,15 @@
 void Parse::do_get_xxx(Node* obj, ciField* field, bool is_field) {
   // Does this field have a constant value?  If so, just push the value.
   if (field->is_constant()) {
-    // final field
+    // final or stable field
+    const Type* stable_type = NULL;
+    if (FoldStableValues && field->is_stable()) {
+      stable_type = Type::get_const_type(field->type());
+      if (field->type()->is_array_klass()) {
+        int stable_dimension = field->type()->as_array_klass()->dimension();
+        stable_type = stable_type->is_aryptr()->cast_to_stable(true, stable_dimension);
+      }
+    }
     if (field->is_static()) {
       // final static field
       if (C->eliminate_boxing()) {
@@ -167,11 +175,10 @@
           }
         }
       }
-      if (push_constant(field->constant_value()))
+      if (push_constant(field->constant_value(), false, false, stable_type))
         return;
-    }
-    else {
-      // final non-static field
+    } else {
+      // final or stable non-static field
       // Treat final non-static fields of trusted classes (classes in
       // java.lang.invoke and sun.invoke packages and subpackages) as
       // compile time constants.
@@ -179,8 +186,12 @@
         const TypeOopPtr* oop_ptr = obj->bottom_type()->isa_oopptr();
         ciObject* constant_oop = oop_ptr->const_oop();
         ciConstant constant = field->constant_value_of(constant_oop);
-        if (push_constant(constant, true))
-          return;
+        if (FoldStableValues && field->is_stable() && constant.is_null_or_zero()) {
+          // fall through to field load; the field is not yet initialized
+        } else {
+          if (push_constant(constant, true, false, stable_type))
+            return;
+        }
       }
     }
   }
@@ -301,7 +312,8 @@
   // Note the presence of writes to final non-static fields, so that we
   // can insert a memory barrier later on to keep the writes from floating
   // out of the constructor.
-  if (is_field && field->is_final()) {
+  // Any method can write a @Stable field; insert memory barriers after those also.
+  if (is_field && (field->is_final() || field->is_stable())) {
     set_wrote_final(true);
     // Preserve allocation ptr to create precedent edge to it in membar
     // generated on exit from constructor.
@@ -314,35 +326,21 @@
 }
 
 
-bool Parse::push_constant(ciConstant constant, bool require_constant, bool is_autobox_cache) {
+
+bool Parse::push_constant(ciConstant constant, bool require_constant, bool is_autobox_cache, const Type* stable_type) {
+  const Type* con_type = Type::make_from_constant(constant, require_constant, is_autobox_cache);
   switch (constant.basic_type()) {
-  case T_BOOLEAN:  push( intcon(constant.as_boolean()) ); break;
-  case T_INT:      push( intcon(constant.as_int())     ); break;
-  case T_CHAR:     push( intcon(constant.as_char())    ); break;
-  case T_BYTE:     push( intcon(constant.as_byte())    ); break;
-  case T_SHORT:    push( intcon(constant.as_short())   ); break;
-  case T_FLOAT:    push( makecon(TypeF::make(constant.as_float())) );  break;
-  case T_DOUBLE:   push_pair( makecon(TypeD::make(constant.as_double())) );  break;
-  case T_LONG:     push_pair( longcon(constant.as_long()) ); break;
   case T_ARRAY:
-  case T_OBJECT: {
+  case T_OBJECT:
     // cases:
     //   can_be_constant    = (oop not scavengable || ScavengeRootsInCode != 0)
     //   should_be_constant = (oop not scavengable || ScavengeRootsInCode >= 2)
     // An oop is not scavengable if it is in the perm gen.
-    ciObject* oop_constant = constant.as_object();
-    if (oop_constant->is_null_object()) {
-      push( zerocon(T_OBJECT) );
-      break;
-    } else if (require_constant || oop_constant->should_be_constant()) {
-      push( makecon(TypeOopPtr::make_from_constant(oop_constant, require_constant, is_autobox_cache)) );
-      break;
-    } else {
-      // we cannot inline the oop, but we can use it later to narrow a type
-      return false;
-    }
-  }
-  case T_ILLEGAL: {
+    if (stable_type != NULL && con_type != NULL && con_type->isa_oopptr())
+      con_type = con_type->join(stable_type);
+    break;
+
+  case T_ILLEGAL:
     // Invalid ciConstant returned due to OutOfMemoryError in the CI
     assert(C->env()->failing(), "otherwise should not see this");
     // These always occur because of object types; we are going to
@@ -350,17 +348,16 @@
     push( zerocon(T_OBJECT) );
     return false;
   }
-  default:
-    ShouldNotReachHere();
+
+  if (con_type == NULL)
+    // we cannot inline the oop, but we can use it later to narrow a type
     return false;
-  }
 
-  // success
+  push_node(constant.basic_type(), makecon(con_type));
   return true;
 }
 
 
-
 //=============================================================================
 void Parse::do_anewarray() {
   bool will_link;
--- a/src/share/vm/opto/type.cpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/type.cpp	Fri Sep 13 00:25:18 2013 -0700
@@ -189,6 +189,38 @@
 }
 
 
+//-----------------------make_from_constant------------------------------------
+const Type* Type::make_from_constant(ciConstant constant,
+                                     bool require_constant, bool is_autobox_cache) {
+  switch (constant.basic_type()) {
+  case T_BOOLEAN:  return TypeInt::make(constant.as_boolean());
+  case T_CHAR:     return TypeInt::make(constant.as_char());
+  case T_BYTE:     return TypeInt::make(constant.as_byte());
+  case T_SHORT:    return TypeInt::make(constant.as_short());
+  case T_INT:      return TypeInt::make(constant.as_int());
+  case T_LONG:     return TypeLong::make(constant.as_long());
+  case T_FLOAT:    return TypeF::make(constant.as_float());
+  case T_DOUBLE:   return TypeD::make(constant.as_double());
+  case T_ARRAY:
+  case T_OBJECT:
+    {
+      // cases:
+      //   can_be_constant    = (oop not scavengable || ScavengeRootsInCode != 0)
+      //   should_be_constant = (oop not scavengable || ScavengeRootsInCode >= 2)
+      // An oop is not scavengable if it is in the perm gen.
+      ciObject* oop_constant = constant.as_object();
+      if (oop_constant->is_null_object()) {
+        return Type::get_zero_type(T_OBJECT);
+      } else if (require_constant || oop_constant->should_be_constant()) {
+        return TypeOopPtr::make_from_constant(oop_constant, require_constant, is_autobox_cache);
+      }
+    }
+  }
+  // Fall through to failure
+  return NULL;
+}
+
+
 //------------------------------make-------------------------------------------
 // Create a simple Type, with default empty symbol sets.  Then hashcons it
 // and look for an existing copy in the type dictionary.
@@ -1824,12 +1856,12 @@
 }
 
 //------------------------------make-------------------------------------------
-const TypeAry *TypeAry::make( const Type *elem, const TypeInt *size) {
+const TypeAry* TypeAry::make(const Type* elem, const TypeInt* size, bool stable) {
   if (UseCompressedOops && elem->isa_oopptr()) {
     elem = elem->make_narrowoop();
   }
   size = normalize_array_size(size);
-  return (TypeAry*)(new TypeAry(elem,size))->hashcons();
+  return (TypeAry*)(new TypeAry(elem,size,stable))->hashcons();
 }
 
 //------------------------------meet-------------------------------------------
@@ -1850,7 +1882,8 @@
   case Array: {                 // Meeting 2 arrays?
     const TypeAry *a = t->is_ary();
     return TypeAry::make(_elem->meet(a->_elem),
-                         _size->xmeet(a->_size)->is_int());
+                         _size->xmeet(a->_size)->is_int(),
+                         _stable & a->_stable);
   }
   case Top:
     break;
@@ -1863,7 +1896,7 @@
 const Type *TypeAry::xdual() const {
   const TypeInt* size_dual = _size->dual()->is_int();
   size_dual = normalize_array_size(size_dual);
-  return new TypeAry( _elem->dual(), size_dual);
+  return new TypeAry(_elem->dual(), size_dual, !_stable);
 }
 
 //------------------------------eq---------------------------------------------
@@ -1871,13 +1904,14 @@
 bool TypeAry::eq( const Type *t ) const {
   const TypeAry *a = (const TypeAry*)t;
   return _elem == a->_elem &&
+    _stable == a->_stable &&
     _size == a->_size;
 }
 
 //------------------------------hash-------------------------------------------
 // Type-specific hashing function.
 int TypeAry::hash(void) const {
-  return (intptr_t)_elem + (intptr_t)_size;
+  return (intptr_t)_elem + (intptr_t)_size + (_stable ? 43 : 0);
 }
 
 //----------------------interface_vs_oop---------------------------------------
@@ -1894,6 +1928,7 @@
 //------------------------------dump2------------------------------------------
 #ifndef PRODUCT
 void TypeAry::dump2( Dict &d, uint depth, outputStream *st ) const {
+  if (_stable)  st->print("stable:");
   _elem->dump2(d, depth, st);
   st->print("[");
   _size->dump2(d, depth, st);
@@ -3457,11 +3492,39 @@
   assert(new_size != NULL, "");
   new_size = narrow_size_type(new_size);
   if (new_size == size())  return this;
-  const TypeAry* new_ary = TypeAry::make(elem(), new_size);
+  const TypeAry* new_ary = TypeAry::make(elem(), new_size, is_stable());
   return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id);
 }
 
 
+//------------------------------cast_to_stable---------------------------------
+const TypeAryPtr* TypeAryPtr::cast_to_stable(bool stable, int stable_dimension) const {
+  if (stable_dimension <= 0 || (stable_dimension == 1 && stable == this->is_stable()))
+    return this;
+
+  const Type* elem = this->elem();
+  const TypePtr* elem_ptr = elem->make_ptr();
+
+  if (stable_dimension > 1 && elem_ptr != NULL && elem_ptr->isa_aryptr()) {
+    // If this is widened from a narrow oop, TypeAry::make will re-narrow it.
+    elem = elem_ptr = elem_ptr->is_aryptr()->cast_to_stable(stable, stable_dimension - 1);
+  }
+
+  const TypeAry* new_ary = TypeAry::make(elem, size(), stable);
+
+  return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id);
+}
+
+//-----------------------------stable_dimension--------------------------------
+int TypeAryPtr::stable_dimension() const {
+  if (!is_stable())  return 0;
+  int dim = 1;
+  const TypePtr* elem_ptr = elem()->make_ptr();
+  if (elem_ptr != NULL && elem_ptr->isa_aryptr())
+    dim += elem_ptr->is_aryptr()->stable_dimension();
+  return dim;
+}
+
 //------------------------------eq---------------------------------------------
 // Structural equality check for Type representations
 bool TypeAryPtr::eq( const Type *t ) const {
@@ -3570,7 +3633,7 @@
         // Something like byte[int+] meets char[int+].
         // This must fall to bottom, not (int[-128..65535])[int+].
         instance_id = InstanceBot;
-        tary = TypeAry::make(Type::BOTTOM, tary->_size);
+        tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable);
       }
     } else // Non integral arrays.
     // Must fall to bottom if exact klasses in upper lattice
@@ -3584,7 +3647,7 @@
          (tap ->_klass_is_exact && !tap->klass()->is_subtype_of(klass())) ||
          // 'this' is exact and super or unrelated:
          (this->_klass_is_exact && !klass()->is_subtype_of(tap->klass())))) {
-      tary = TypeAry::make(Type::BOTTOM, tary->_size);
+      tary = TypeAry::make(Type::BOTTOM, tary->_size, tary->_stable);
       return make( NotNull, NULL, tary, lazy_klass, false, off, InstanceBot );
     }
 
--- a/src/share/vm/opto/type.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/opto/type.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -372,6 +372,10 @@
   // Mapping from CI type system to compiler type:
   static const Type* get_typeflow_type(ciType* type);
 
+  static const Type* make_from_constant(ciConstant constant,
+                                        bool require_constant = false,
+                                        bool is_autobox_cache = false);
+
 private:
   // support arrays
   static const BasicType _basic_type[];
@@ -588,8 +592,8 @@
 //------------------------------TypeAry----------------------------------------
 // Class of Array Types
 class TypeAry : public Type {
-  TypeAry( const Type *elem, const TypeInt *size) : Type(Array),
-    _elem(elem), _size(size) {}
+  TypeAry(const Type* elem, const TypeInt* size, bool stable) : Type(Array),
+      _elem(elem), _size(size), _stable(stable) {}
 public:
   virtual bool eq( const Type *t ) const;
   virtual int  hash() const;             // Type specific hashing
@@ -599,10 +603,11 @@
 private:
   const Type *_elem;            // Element type of array
   const TypeInt *_size;         // Elements in array
+  const bool _stable;           // Are elements @Stable?
   friend class TypeAryPtr;
 
 public:
-  static const TypeAry *make(  const Type *elem, const TypeInt *size);
+  static const TypeAry* make(const Type* elem, const TypeInt* size, bool stable = false);
 
   virtual const Type *xmeet( const Type *t ) const;
   virtual const Type *xdual() const;    // Compute dual right now.
@@ -988,6 +993,7 @@
   const TypeAry* ary() const  { return _ary; }
   const Type*    elem() const { return _ary->_elem; }
   const TypeInt* size() const { return _ary->_size; }
+  bool      is_stable() const { return _ary->_stable; }
 
   bool is_autobox_cache() const { return _is_autobox_cache; }
 
@@ -1011,6 +1017,9 @@
   virtual const Type *xmeet( const Type *t ) const;
   virtual const Type *xdual() const;    // Compute dual right now.
 
+  const TypeAryPtr* cast_to_stable(bool stable, int stable_dimension = 1) const;
+  int stable_dimension() const;
+
   // Convenience common pre-built types.
   static const TypeAryPtr *RANGE;
   static const TypeAryPtr *OOPS;
--- a/src/share/vm/runtime/globals.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/runtime/globals.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -3649,6 +3649,9 @@
   experimental(bool, TrustFinalNonStaticFields, false,                      \
           "trust final non-static declarations for constant folding")       \
                                                                             \
+  experimental(bool, FoldStableValues, false,                               \
+          "Private flag to control optimizations for stable variables")     \
+                                                                            \
   develop(bool, TraceInvokeDynamic, false,                                  \
           "trace internal invoke dynamic operations")                       \
                                                                             \
--- a/src/share/vm/runtime/interfaceSupport.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/runtime/interfaceSupport.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -471,16 +471,6 @@
     VM_ENTRY_BASE(result_type, header, thread)                       \
     debug_only(VMEntryWrapper __vew;)
 
-// Another special case for nmethod_entry_point so the nmethod that the
-// interpreter is about to branch to doesn't get flushed before as we
-// branch to it's interpreter_entry_point.  Skip stress testing here too.
-// Also we don't allow async exceptions because it is just too painful.
-#define IRT_ENTRY_FOR_NMETHOD(result_type, header)                   \
-  result_type header {                                               \
-    nmethodLocker _nmlock(nm);                                       \
-    ThreadInVMfromJavaNoAsyncException __tiv(thread);                                \
-    VM_ENTRY_BASE(result_type, header, thread)
-
 #define IRT_END }
 
 
--- a/src/share/vm/utilities/accessFlags.hpp	Thu Sep 12 11:08:59 2013 -0700
+++ b/src/share/vm/utilities/accessFlags.hpp	Fri Sep 13 00:25:18 2013 -0700
@@ -78,11 +78,13 @@
   JVM_ACC_FIELD_ACCESS_WATCHED       = 0x00002000,  // field access is watched by JVMTI
   JVM_ACC_FIELD_MODIFICATION_WATCHED = 0x00008000,  // field modification is watched by JVMTI
   JVM_ACC_FIELD_INTERNAL             = 0x00000400,  // internal field, same as JVM_ACC_ABSTRACT
+  JVM_ACC_FIELD_STABLE               = 0x00000020,  // @Stable field, same as JVM_ACC_SYNCHRONIZED
   JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE = 0x00000800, // field has generic signature
 
   JVM_ACC_FIELD_INTERNAL_FLAGS       = JVM_ACC_FIELD_ACCESS_WATCHED |
                                        JVM_ACC_FIELD_MODIFICATION_WATCHED |
                                        JVM_ACC_FIELD_INTERNAL |
+                                       JVM_ACC_FIELD_STABLE |
                                        JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE,
 
                                                     // flags accepted by set_field_flags()
@@ -148,6 +150,7 @@
                                         { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; }
   bool on_stack() const                 { return (_flags & JVM_ACC_ON_STACK) != 0; }
   bool is_internal() const              { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; }
+  bool is_stable() const                { return (_flags & JVM_ACC_FIELD_STABLE) != 0; }
   bool field_has_generic_signature() const
                                         { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 0; }
 
--- a/test/gc/TestVerifyDuringStartup.java	Thu Sep 12 11:08:59 2013 -0700
+++ b/test/gc/TestVerifyDuringStartup.java	Fri Sep 13 00:25:18 2013 -0700
@@ -48,7 +48,7 @@
                                              "-XX:+VerifyDuringStartup",
                                              "-version"});
 
-    System.out.print("Testing:\n" + JDKToolFinder.getJDKTool("java"));
+    System.out.print("Testing:\n" + JDKToolFinder.getCurrentJDKTool("java"));
     for (int i = 0; i < vmOpts.size(); i += 1) {
       System.out.print(" " + vmOpts.get(i));
     }
--- a/test/testlibrary/com/oracle/java/testlibrary/JDKToolFinder.java	Thu Sep 12 11:08:59 2013 -0700
+++ b/test/testlibrary/com/oracle/java/testlibrary/JDKToolFinder.java	Fri Sep 13 00:25:18 2013 -0700
@@ -27,24 +27,43 @@
 
 public final class JDKToolFinder {
 
-  private JDKToolFinder() {
-  }
-
-  /**
-   * Returns the full path to an executable in jdk/bin based on System property
-   * test.jdk (set by jtreg test suite)
-   *
-   * @return Full path to an executable in jdk/bin
-   */
-  public static String getJDKTool(String tool) {
-    String binPath = System.getProperty("test.jdk");
-    if (binPath == null) {
-      throw new RuntimeException("System property 'test.jdk' not set. This property is normally set by jtreg. "
-          + "When running test separately, set this property using '-Dtest.jdk=/path/to/jdk'.");
+    private JDKToolFinder() {
     }
 
-    binPath += File.separatorChar + "bin" + File.separatorChar + tool;
+    /**
+     * Returns the full path to an executable in jdk/bin based on System
+     * property {@code compile.jdk} (set by jtreg test suite)
+     *
+     * @return Full path to an executable in jdk/bin
+     */
+    public static String getJDKTool(String tool) {
+        String binPath = System.getProperty("compile.jdk");
+        if (binPath == null) {
+            throw new RuntimeException("System property 'compile.jdk' not set. "
+                    + "This property is normally set by jtreg. "
+                    + "When running test separately, set this property using "
+                    + "'-Dcompile.jdk=/path/to/jdk'.");
+        }
+        binPath += File.separatorChar + "bin" + File.separatorChar + tool;
 
-    return binPath;
-  }
+        return binPath;
+    }
+    /**
+     * Returns the full path to an executable in &lt;current jdk&gt;/bin based
+     * on System property {@code test.jdk} (set by jtreg test suite)
+     *
+     * @return Full path to an executable in jdk/bin
+     */
+    public static String getCurrentJDKTool(String tool) {
+        String binPath = System.getProperty("test.jdk");
+        if (binPath == null) {
+            throw new RuntimeException("System property 'test.jdk' not set. "
+                + "This property is normally set by jtreg. "
+                + "When running test separately, set this property using "
+                + "'-Dtest.jdk=/path/to/jdk'.");
+        }
+        binPath += File.separatorChar + "bin" + File.separatorChar + tool;
+
+        return binPath;
+    }
 }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/Makefile	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,73 @@
+#
+# Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.	See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+#
+
+ifneq "x$(ALT_BOOTDIR)" "x"
+	BOOTDIR := $(ALT_BOOTDIR)
+endif
+
+ifeq "x$(BOOTDIR)" "x"
+	JDK_HOME := $(shell dirname $(shell which java))/..
+else
+	JDK_HOME := $(BOOTDIR)
+endif
+
+SRC_DIR = src
+BUILD_DIR = build
+OUTPUT_DIR = $(BUILD_DIR)/classes
+WHITEBOX_DIR = ../whitebox
+
+JAVAC = $(JDK_HOME)/bin/javac
+JAR = $(JDK_HOME)/bin/jar
+
+SRC_FILES = $(shell find $(SRC_DIR) -name '*.java')
+
+MAIN_CLASS = sun.hotspot.tools.ctw.CompileTheWorld
+
+.PHONY: clean cleantmp
+
+all: ctw.jar cleantmp
+
+clean: cleantmp
+	@rm -rf ctw.jar wb.jar
+
+cleantmp:
+	@rm -rf filelist manifest.mf
+	@rm -rf $(BUILD_DIR)
+
+ctw.jar: filelist wb.jar manifest.mf
+	@mkdir -p $(OUTPUT_DIR)
+	$(JAVAC) -sourcepath $(SRC_DIR) -d $(OUTPUT_DIR) -cp wb.jar @filelist
+	$(JAR) cfm ctw.jar manifest.mf -C $(OUTPUT_DIR) .
+
+wb.jar: 
+	make -C ${WHITEBOX_DIR} wb.jar
+	cp ${WHITEBOX_DIR}/wb.jar ./
+	make -C ${WHITEBOX_DIR} clean
+
+filelist: $(SRC_FILES)
+	@rm -f $@
+	@echo $(SRC_FILES) > $@
+
+manifest.mf:
+	@echo "Main-Class: ${MAIN_CLASS}" > manifest.mf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/README	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,93 @@
+#
+# Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+#
+
+DESCRIPTION
+
+This is replacement for CompileTheWorld (CTW) written on java. Its purpose is
+to make possible the use of CTW in product builds.
+
+DEPENDENCES
+
+The tool depends on Whitebox API. Assumed, that the sources of whitebox are
+located in '../whitebox' directory.
+
+BUILDING
+
+Simple way to build, just type 'make'.
+
+Makefile uses environment variables 'ALT_BOOTDIR', 'BOOTDIR' as root-dir of jdk
+that will be used for compilation and creating jar.
+
+On successful building 'ctw.jar' will be created.
+
+RUNNING
+
+Since the tool uses WhiteBox API, options 'UnlockDiagnosticVMOptions' and
+'WhiteBoxAPI' should be specified, and 'wb.jar' should be added to
+boot-classpath:
+  $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar 
+
+Arguments can be paths to '.jar, '.zip', '.lst' files or directories with
+classes, that define which classes will be compiled:
+  - '.jar', '.zip' files and directories are interpreted like in classpath
+(including '<dir>/*' syntax)
+  - '.lst' files -- files with class names (in java notation) to compile.
+CTW will try to find these classes with default class loader, so they should
+be located in classpath.
+
+Without arguments it would work as old version of CTW: all classes in
+boot-classpath will be compiled, excluding classes in 'rt.jar' if 'rt.jar' isn't
+first in boot-classpath.
+
+Due CTW's flags also are not available in product builds, the tool uses
+properties with the same names:
+  - 'CompileTheWorldPreloadClasses' -- type:boolean, default:true, description:
+Preload all classes used by a class before start loading
+  - 'CompileTheWorldStartAt' -- type:long, default:1, description: First class
+to consider
+  - 'CompileTheWorldStopAt' -- type:long, default:Long.MAX_VALUE, description:
+Last class to consider
+
+Also it uses additional properties:
+  - 'sun.hotspot.tools.ctw.verbose' -- type:boolean, default:false,
+description: Verbose output, adds additional information about compilation
+  - 'sun.hotspot.tools.ctw.logfile' -- type:string, default:null,
+description: Path to logfile, if it's null, cout will be used.
+
+EXAMPLES
+
+compile classes from 'rt.jar':
+  $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ${JAVA_HOME}/jre/lib/rt.jar
+
+compile classes from all '.jar' in './testjars' directory:
+  $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./testjars/*
+
+compile classes from './build/classes' directory:
+  $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar ./build/classes
+
+compile only java.lang.String, java.lang.Object classes:
+  $ echo java.lang.String > classes.lst
+  $ echo java.lang.Object >> classes.lst
+  $ java -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:wb.jar -jar ctw.jar classes.lst
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/ClassPathDirEntry.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.Set;
+import java.util.EnumSet;
+import java.util.HashSet;
+import java.util.concurrent.Executor;
+
+import java.io.*;
+import java.nio.file.*;
+import java.nio.file.attribute.*;
+
+/**
+ * * Handler for dirs containing classes to compile.
+ * @author igor.ignatyev@oracle.com
+ */
+public class ClassPathDirEntry extends PathHandler {
+
+    private final int rootLength = root.toString().length();
+
+    public ClassPathDirEntry(Path root, Executor executor) {
+        super(root, executor);
+        try {
+            URL url = root.toUri().toURL();
+            setLoader(new URLClassLoader(new URL[]{url}));
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void process() {
+        System.out.println("# dir: " + root);
+        if (!Files.exists(root)) {
+            return;
+        }
+        try {
+            Files.walkFileTree(root, EnumSet.of(FileVisitOption.FOLLOW_LINKS),
+                    Integer.MAX_VALUE, new CompileFileVisitor());
+        } catch (IOException ioe) {
+            ioe.printStackTrace();
+        }
+    }
+
+    private void processFile(Path file) {
+        if (Utils.isClassFile(file.toString())) {
+            processClass(pathToClassName(file));
+        }
+    }
+
+    private String pathToClassName(Path file) {
+        String fileString;
+        if (root == file) {
+            fileString = file.normalize().toString();
+        } else {
+            fileString = file.normalize().toString().substring(rootLength + 1);
+        }
+        return Utils.fileNameToClassName(fileString);
+    }
+
+    private class CompileFileVisitor extends SimpleFileVisitor<Path> {
+
+        private final Set<Path> ready = new HashSet<>();
+
+        @Override
+        public FileVisitResult preVisitDirectory(Path dir,
+                BasicFileAttributes attrs) throws IOException {
+            if (ready.contains(dir)) {
+                return FileVisitResult.SKIP_SUBTREE;
+            }
+            ready.add(dir);
+            return super.preVisitDirectory(dir, attrs);
+        }
+
+        @Override
+        public FileVisitResult visitFile(Path file,
+                BasicFileAttributes attrs) throws IOException {
+            if (!ready.contains(file)) {
+                processFile(file);
+            }
+            return isFinished() ? FileVisitResult.TERMINATE
+                    : FileVisitResult.CONTINUE;
+        }
+
+        @Override
+        public FileVisitResult visitFileFailed(Path file,
+                IOException exc) throws IOException {
+            return FileVisitResult.CONTINUE;
+        }
+    }
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/ClassPathJarEntry.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.*;
+import java.util.jar.*;
+import java.util.concurrent.Executor;
+
+import java.io.*;
+import java.nio.file.*;
+
+/**
+ * Handler for jar-files containing classes to compile.
+ * @author igor.ignatyev@oracle.com
+ */
+public class ClassPathJarEntry extends PathHandler {
+
+    public ClassPathJarEntry(Path root, Executor executor) {
+        super(root, executor);
+        try {
+            URL url = root.toUri().toURL();
+            setLoader(new URLClassLoader(new URL[]{url}));
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void process() {
+        System.out.println("# jar: " + root);
+        if (!Files.exists(root)) {
+            return;
+        }
+        try {
+            JarFile jarFile = new JarFile(root.toFile());
+            JarEntry entry;
+            for (Enumeration<JarEntry> e = jarFile.entries();
+                    e.hasMoreElements(); ) {
+                entry = e.nextElement();
+                processJarEntry(entry);
+                if (isFinished()) {
+                    return;
+                }
+            }
+        } catch (IOException ioe) {
+            ioe.printStackTrace();
+        }
+    }
+
+     private void processJarEntry(JarEntry entry) {
+        String filename = entry.getName();
+        if (Utils.isClassFile(filename)) {
+            processClass(Utils.fileNameToClassName(filename));
+        }
+    }
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/ClassPathJarInDirEntry.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import java.io.IOException;
+import java.nio.file.DirectoryStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.concurrent.Executor;
+
+/**
+ * Handler for dirs containing jar-files with classes to compile.
+ *
+ * @author igor.ignatyev@oracle.com
+ */
+public class ClassPathJarInDirEntry extends PathHandler {
+
+    public ClassPathJarInDirEntry(Path root, Executor executor) {
+        super(root, executor);
+    }
+
+    @Override
+    public void process() {
+        System.out.println("# jar_in_dir: " + root);
+        if (!Files.exists(root)) {
+            return;
+        }
+        try (DirectoryStream<Path> ds
+                = Files.newDirectoryStream(root, "*.jar")) {
+            for (Path p : ds) {
+                new ClassPathJarEntry(p, executor).process();
+                if (isFinished()) {
+                    return;
+                }
+            }
+        } catch (IOException ioe) {
+            ioe.printStackTrace();
+        }
+    }
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/ClassesListInFile.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.concurrent.Executor;
+
+/**
+ * Handler for files containing a list of classes to compile.
+ *
+ * @author igor.ignatyev@oracle.com
+ */
+public class ClassesListInFile extends PathHandler {
+    public ClassesListInFile(Path root, Executor executor) {
+        super(root, executor);
+    }
+
+    @Override
+    public void process() {
+        System.out.println("# list: " + root);
+        if (!Files.exists(root)) {
+            return;
+        }
+        try {
+            try (BufferedReader reader = Files.newBufferedReader(root,
+                    StandardCharsets.UTF_8)) {
+                String line;
+                while (!isFinished() && ((line = reader.readLine()) != null)) {
+                    processClass(line);
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/CompileTheWorld.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import sun.management.ManagementFactoryHelper;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import java.util.List;
+import java.util.concurrent.*;
+
+/**
+ * @author igor.ignatyev@oracle.com
+ */
+public class CompileTheWorld {
+    /**
+     * Entry point. Compiles classes in {@code args}, or all classes in
+     * boot-classpath if args is empty
+     *
+     * @param args paths to jar/zip, dir contains classes, or to .lst file
+     *             contains list of classes to compile
+     */
+    public static void main(String[] args) {
+        String logfile = Utils.LOG_FILE;
+        PrintStream os = null;
+        if (logfile != null) {
+            try {
+                os = new PrintStream(Files.newOutputStream(Paths.get(logfile)));
+            } catch (IOException io) {
+            }
+        }
+        if (os != null) {
+            System.setOut(os);
+        }
+
+        try {
+            try {
+                if (ManagementFactoryHelper.getCompilationMXBean() == null) {
+                    throw new RuntimeException(
+                            "CTW can not work in interpreted mode");
+                }
+            } catch (java.lang.NoClassDefFoundError e) {
+                // compact1, compact2 support
+            }
+            String[] paths = args;
+            boolean skipRtJar = false;
+            if (args.length == 0) {
+                paths = getDefaultPaths();
+                skipRtJar = true;
+            }
+            ExecutorService executor = createExecutor();
+            long start = System.currentTimeMillis();
+            try {
+                String path;
+                for (int i = 0, n = paths.length; i < n
+                        && !PathHandler.isFinished(); ++i) {
+                    path = paths[i];
+                    if (skipRtJar && i > 0 && isRtJar(path)) {
+                        // rt.jar is not first, so skip it
+                        continue;
+                    }
+                    PathHandler.create(path, executor).process();
+                }
+            } finally {
+                await(executor);
+            }
+            System.out.printf("Done (%d classes, %d methods, %d ms)%n",
+                    Compiler.getClassCount(),
+                    Compiler.getMethodCount(),
+                    System.currentTimeMillis() - start);
+        } finally {
+            if (os != null) {
+                os.close();
+            }
+        }
+    }
+
+    private static ExecutorService createExecutor() {
+        final int threadsCount = Math.min(
+                Runtime.getRuntime().availableProcessors(),
+                Utils.CI_COMPILER_COUNT);
+        ExecutorService result;
+        if (threadsCount > 1) {
+            result = new ThreadPoolExecutor(threadsCount, threadsCount,
+                    /* keepAliveTime */ 0L, TimeUnit.MILLISECONDS,
+                    new ArrayBlockingQueue<>(threadsCount),
+                    new ThreadPoolExecutor.CallerRunsPolicy());
+        } else {
+            result = new CurrentThreadExecutor();
+        }
+        return result;
+    }
+
+    private static String[] getDefaultPaths() {
+        String property = System.getProperty("sun.boot.class.path");
+        System.out.println(
+                "# use 'sun.boot.class.path' as args: " + property);
+        return Utils.PATH_SEPARATOR.split(property);
+    }
+
+    private static void await(ExecutorService executor) {
+        executor.shutdown();
+        while (!executor.isTerminated()) {
+            try {
+                executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
+            } catch (InterruptedException ie) {
+                Thread.currentThread().interrupt();
+                break;
+            }
+        }
+    }
+
+    private static boolean isRtJar(String path) {
+        return Utils.endsWithIgnoreCase(path, File.separator + "rt.jar");
+    }
+
+    private static class CurrentThreadExecutor extends AbstractExecutorService {
+        private boolean isShutdown;
+
+        @Override
+        public void shutdown() {
+            this.isShutdown = true;
+        }
+
+        @Override
+        public List<Runnable> shutdownNow() {
+            return null;
+        }
+
+        @Override
+        public boolean isShutdown() {
+            return isShutdown;
+        }
+
+        @Override
+        public boolean isTerminated() {
+            return isShutdown;
+        }
+
+        @Override
+        public boolean awaitTermination(long timeout, TimeUnit unit)
+                throws InterruptedException {
+            return isShutdown;
+        }
+
+        @Override
+        public void execute(Runnable command) {
+            command.run();
+        }
+    }
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/Compiler.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import sun.hotspot.WhiteBox;
+import sun.misc.SharedSecrets;
+import sun.reflect.ConstantPool;
+
+import java.lang.reflect.Executable;
+
+import java.util.Objects;
+import java.util.concurrent.Executor;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * Provide method to compile whole class.
+ * Also contains compiled methods and classes counters.
+ *
+ * @author igor.ignatyev@oracle.com
+ */
+public class Compiler {
+    private Compiler() { }
+    private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
+    private static final AtomicLong CLASS_COUNT = new AtomicLong(0L);
+    private static final AtomicLong METHOD_COUNT = new AtomicLong(0L);
+    private static volatile boolean CLASSES_LIMIT_REACHED = false;
+
+    /**
+     * @return count of processed classes
+     */
+    public static long getClassCount() {
+        return CLASS_COUNT.get();
+    }
+
+    /**
+     * @return count of processed methods
+     */
+    public static long getMethodCount() {
+        return METHOD_COUNT.get();
+    }
+
+    /**
+     * @return {@code true} if classes limit is reached
+     */
+    public static boolean isLimitReached() {
+        return CLASSES_LIMIT_REACHED;
+    }
+
+    /**
+     * Compiles all methods and constructors.
+     *
+     * @param aClass class to compile
+     * @param executor executor used for compile task invocation
+     * @throws NullPointerException if {@code class} or {@code executor}
+     *                              is {@code null}
+     */
+    public static void compileClass(Class aClass, Executor executor) {
+        Objects.requireNonNull(aClass);
+        Objects.requireNonNull(executor);
+        long id = CLASS_COUNT.incrementAndGet();
+        if (id > Utils.COMPILE_THE_WORLD_STOP_AT) {
+            CLASS_COUNT.decrementAndGet();
+            CLASSES_LIMIT_REACHED = true;
+            return;
+        }
+
+        if (id >= Utils.COMPILE_THE_WORLD_START_AT) {
+            String name = aClass.getName();
+            try {
+                System.out.printf("[%d]\t%s%n", id, name);
+                ConstantPool constantPool = SharedSecrets.getJavaLangAccess().
+                        getConstantPool(aClass);
+                if (Utils.COMPILE_THE_WORLD_PRELOAD_CLASSES) {
+                    preloadClasses(name, id, constantPool);
+                }
+                long methodCount = 0;
+                for (Executable e : aClass.getDeclaredConstructors()) {
+                    ++methodCount;
+                    executor.execute(new CompileMethodCommand(id, name, e));
+                }
+                for (Executable e : aClass.getDeclaredMethods()) {
+                    ++methodCount;
+                    executor.execute(new CompileMethodCommand(id, name, e));
+                }
+                METHOD_COUNT.addAndGet(methodCount);
+
+                if (Utils.DEOPTIMIZE_ALL_CLASSES_RATE > 0
+                        && (id % Utils.DEOPTIMIZE_ALL_CLASSES_RATE == 0)) {
+                    WHITE_BOX.deoptimizeAll();
+                }
+            } catch (Throwable t) {
+                System.out.printf("[%d]\t%s\tskipping %s%n", id, name, t);
+                t.printStackTrace();
+            }
+        }
+    }
+
+    private static void preloadClasses(String className, long id,
+            ConstantPool constantPool) {
+        try {
+            for (int i = 0, n = constantPool.getSize(); i < n; ++i) {
+                try {
+                    constantPool.getClassAt(i);
+                } catch (IllegalArgumentException ignore) {
+                }
+            }
+        } catch (Throwable t) {
+            System.out.printf("[%d]\t%s\tpreloading failed : %s%n", id,
+                    className, t);
+        }
+    }
+
+
+
+    /**
+     * Compilation of method.
+     * Will compile method on all available comp levels.
+     */
+    private static class CompileMethodCommand implements Runnable {
+        private final long classId;
+        private final String className;
+        private final Executable method;
+
+        /**
+         * @param classId   id of class
+         * @param className name of class
+         * @param method    compiled for compilation
+         */
+        public CompileMethodCommand(long classId, String className,
+                Executable method) {
+            this.classId = classId;
+            this.className = className;
+            this.method = method;
+        }
+
+        @Override
+        public final void run() {
+            int compLevel = Utils.INITIAL_COMP_LEVEL;
+            if (Utils.TIERED_COMPILATION) {
+                for (int i = compLevel; i <= Utils.TIERED_STOP_AT_LEVEL; ++i) {
+                    WHITE_BOX.deoptimizeMethod(method);
+                    compileMethod(method, i);
+                }
+            } else {
+                compileMethod(method, compLevel);
+            }
+        }
+
+        private void waitCompilation() {
+            if (!Utils.BACKGROUND_COMPILATION) {
+                return;
+            }
+            final Object obj = new Object();
+            synchronized (obj) {
+                for (int i = 0;
+                     i < 10 && WHITE_BOX.isMethodQueuedForCompilation(method);
+                     ++i) {
+                    try {
+                        obj.wait(1000);
+                    } catch (InterruptedException e) {
+                        Thread.currentThread().interrupt();
+                    }
+                }
+            }
+        }
+
+        private void compileMethod(Executable method, int compLevel) {
+            if (WHITE_BOX.isMethodCompilable(method, compLevel)) {
+                try {
+                    WHITE_BOX.enqueueMethodForCompilation(method, compLevel);
+                    waitCompilation();
+                    int tmp = WHITE_BOX.getMethodCompilationLevel(method);
+                    if (tmp != compLevel) {
+                        logMethod(method, "compilation level = " + tmp
+                                + ", but not " + compLevel);
+                    } else if (Utils.IS_VERBOSE) {
+                        logMethod(method, "compilation level = " + tmp + ". OK");
+                    }
+                } catch (Throwable t) {
+                    logMethod(method, "error on compile at " + compLevel
+                            + " level");
+                    t.printStackTrace();
+                }
+            } else if (Utils.IS_VERBOSE) {
+                logMethod(method, "not compilable at " + compLevel);
+            }
+        }
+
+        private void logMethod(Executable method, String message) {
+            StringBuilder builder = new StringBuilder("[");
+            builder.append(classId);
+            builder.append("]\t");
+            builder.append(className);
+            builder.append("::");
+            builder.append(method.getName());
+            builder.append('(');
+            Class[] params = method.getParameterTypes();
+            for (int i = 0, n = params.length - 1; i < n; ++i) {
+                builder.append(params[i].getName());
+                builder.append(", ");
+            }
+            if (params.length != 0) {
+                builder.append(params[params.length - 1].getName());
+            }
+            builder.append(')');
+            if (message != null) {
+                builder.append('\t');
+                builder.append(message);
+            }
+            System.err.println(builder);
+        }
+    }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/PathHandler.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.io.File;
+
+import java.util.Objects;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import java.util.concurrent.Executor;
+
+/**
+ * Abstract handler for path.
+ * <p/>
+ * Concrete subclasses should implement method {@link #process()}.
+ *
+ * @author igor.ignatyev@oracle.com
+ */
+public abstract class PathHandler {
+    private static final Pattern JAR_IN_DIR_PATTERN
+            = Pattern.compile("^(.*[/\\\\])?\\*$");
+    protected final Path root;
+    protected final Executor executor;
+    private ClassLoader loader;
+
+    /**
+     * @param root     root path to process
+     * @param executor executor used for process task invocation
+     * @throws NullPointerException if {@code root} or {@code executor} is
+     *                              {@code null}
+     */
+    protected PathHandler(Path root, Executor executor) {
+        Objects.requireNonNull(root);
+        Objects.requireNonNull(executor);
+        this.root = root.normalize();
+        this.executor = executor;
+        this.loader = ClassLoader.getSystemClassLoader();
+    }
+
+   /**
+     * Factory method. Construct concrete handler in depends from {@code path}.
+     *
+     * @param path     the path to process
+     * @param executor executor used for compile task invocation
+     * @throws NullPointerException if {@code path} or {@code executor} is
+     *                              {@code null}
+     */
+    public static PathHandler create(String path, Executor executor) {
+        Objects.requireNonNull(path);
+        Objects.requireNonNull(executor);
+        Matcher matcher = JAR_IN_DIR_PATTERN.matcher(path);
+        if (matcher.matches()) {
+            path = matcher.group(1);
+            path = path.isEmpty() ? "." : path;
+            return new ClassPathJarInDirEntry(Paths.get(path), executor);
+        } else {
+            path = path.isEmpty() ? "." : path;
+            Path p = Paths.get(path);
+            if (isJarFile(p)) {
+                return new ClassPathJarEntry(p, executor);
+            } else if (isListFile(p)) {
+                return new ClassesListInFile(p, executor);
+            } else {
+                return new ClassPathDirEntry(p, executor);
+            }
+        }
+    }
+
+    private static boolean isJarFile(Path path) {
+        if (Files.isRegularFile(path)) {
+            String name = path.toString();
+            return Utils.endsWithIgnoreCase(name, ".zip")
+                    || Utils.endsWithIgnoreCase(name, ".jar");
+        }
+        return false;
+    }
+
+    private static boolean isListFile(Path path) {
+        if (Files.isRegularFile(path)) {
+            String name = path.toString();
+            return Utils.endsWithIgnoreCase(name, ".lst");
+        }
+        return false;
+    }
+
+    /**
+     * Processes all classes in specified path.
+     */
+    public abstract void process();
+
+   /**
+     * Sets class loader, that will be used to define class at
+     * {@link #processClass(String)}.
+     *
+     * @param loader class loader
+     * @throws NullPointerException if {@code loader} is {@code null}
+     */
+    protected final void setLoader(ClassLoader loader) {
+        Objects.requireNonNull(loader);
+        this.loader = loader;
+    }
+
+    /**
+     * Processes specificed class.
+     * @param name fully qualified name of class to process
+     */
+    protected final void processClass(String name) {
+        try {
+            Class aClass = Class.forName(name, true, loader);
+            Compiler.compileClass(aClass, executor);
+        } catch (ClassNotFoundException | LinkageError e) {
+            System.out.printf("Class %s loading failed : %s%n", name,
+                e.getMessage());
+        }
+    }
+
+    /**
+     * @return {@code true} if processing should be stopped
+     */
+    public static boolean isFinished() {
+        return Compiler.isLimitReached();
+    }
+
+}
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/Utils.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,215 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.hotspot.tools.ctw;
+
+import com.sun.management.HotSpotDiagnosticMXBean;
+import sun.management.ManagementFactoryHelper;
+
+import java.io.File;
+import java.util.regex.Pattern;
+
+/**
+ * Auxiliary methods.
+ *
+ * @author igor.ignatyev@oracle.com
+ */
+public class Utils {
+    /**
+     * Value of {@code -XX:CompileThreshold}
+     */
+    public static final boolean TIERED_COMPILATION
+            = Boolean.parseBoolean(getVMOption("TieredCompilation", "false"));
+    /**
+     * Value of {@code -XX:BackgroundCompilation}
+     */
+    public static final boolean BACKGROUND_COMPILATION
+            = Boolean.parseBoolean(getVMOption("BackgroundCompilation",
+            "false"));
+    /**
+     * Value of {@code -XX:TieredStopAtLevel}
+     */
+    public static final int TIERED_STOP_AT_LEVEL;
+    /**
+     * Value of {@code -XX:CICompilerCount}
+     */
+    public static final Integer CI_COMPILER_COUNT
+            = Integer.valueOf(getVMOption("CICompilerCount", "1"));
+    /**
+     * Initial compilation level.
+     */
+    public static final int INITIAL_COMP_LEVEL;
+    /**
+     * Compiled path-separator regexp.
+     */
+    public static final Pattern PATH_SEPARATOR = Pattern.compile(
+            File.pathSeparator, Pattern.LITERAL);
+    /**
+     * Value of {@code -DDeoptimizeAllClassesRate}. Frequency of
+     * {@code WB.deoptimizeAll()} invocation If it less that {@code 0},
+     * {@code WB.deoptimizeAll()} will not be invoked.
+     */
+    public static final int DEOPTIMIZE_ALL_CLASSES_RATE
+            = Integer.getInteger("DeoptimizeAllClassesRate", -1);
+    /**
+     * Value of {@code -DCompileTheWorldStopAt}. Last class to consider.
+     */
+    public static final long COMPILE_THE_WORLD_STOP_AT
+            = Long.getLong("CompileTheWorldStopAt", Long.MAX_VALUE);
+    /**
+     * Value of {@code -DCompileTheWorldStartAt}. First class to consider.
+     */
+    public static final long COMPILE_THE_WORLD_START_AT
+            = Long.getLong("CompileTheWorldStartAt", 1);
+    /**
+     * Value of {@code -DCompileTheWorldPreloadClasses}. Preload all classes
+     * used by a class before start loading.
+     */
+    public static final boolean COMPILE_THE_WORLD_PRELOAD_CLASSES;
+    /**
+     * Value of {@code -Dsun.hotspot.tools.ctw.verbose}. Verbose output,
+     * adds additional information about compilation.
+     */
+    public static final boolean IS_VERBOSE
+            = Boolean.getBoolean("sun.hotspot.tools.ctw.verbose");
+    /**
+     * Value of {@code -Dsun.hotspot.tools.ctw.logfile}.Path to logfile, if
+     * it's null, cout will be used.
+     */
+    public static final String LOG_FILE
+            = System.getProperty("sun.hotspot.tools.ctw.logfile");
+    static {
+        if (Utils.TIERED_COMPILATION) {
+            INITIAL_COMP_LEVEL = 1;
+        } else {
+            String vmName = System.getProperty("java.vm.name");
+            if (Utils.endsWithIgnoreCase(vmName, " Server VM")) {
+                INITIAL_COMP_LEVEL = 4;
+            } else if (Utils.endsWithIgnoreCase(vmName, " Client VM")
+                    || Utils.endsWithIgnoreCase(vmName, " Minimal VM")) {
+                INITIAL_COMP_LEVEL = 1;
+            } else {
+                throw new RuntimeException("Unknown VM: " + vmName);
+            }
+        }
+
+        TIERED_STOP_AT_LEVEL = Integer.parseInt(getVMOption("TieredStopAtLevel",
+                String.valueOf(INITIAL_COMP_LEVEL)));
+    }
+
+    static {
+        String tmp = System.getProperty("CompileTheWorldPreloadClasses");
+        if (tmp == null) {
+            COMPILE_THE_WORLD_PRELOAD_CLASSES = true;
+        } else {
+            COMPILE_THE_WORLD_PRELOAD_CLASSES = Boolean.parseBoolean(tmp);
+        }
+    }
+
+    public static final String CLASSFILE_EXT = ".class";
+
+    private Utils() {
+    }
+
+    /**
+     * Tests if the string ends with the suffix, ignoring case
+     * considerations
+     *
+     * @param string the tested string
+     * @param suffix the suffix
+     * @return {@code true} if {@code string} ends with the {@code suffix}
+     * @see String#endsWith(String)
+     */
+    public static boolean endsWithIgnoreCase(String string, String suffix) {
+        if (string == null || suffix == null) {
+            return false;
+        }
+        int length = suffix.length();
+        int toffset = string.length() - length;
+        if (toffset < 0) {
+            return false;
+        }
+        return string.regionMatches(true, toffset, suffix, 0, length);
+    }
+
+    /**
+     * Returns value of VM option.
+     *
+     * @param name option's name
+     * @return value of option or {@code null}, if option doesn't exist
+     * @throws NullPointerException if name is null
+     */
+    public static String getVMOption(String name) {
+        String result;
+        HotSpotDiagnosticMXBean diagnostic
+                = ManagementFactoryHelper.getDiagnosticMXBean();
+        result = diagnostic.getVMOption(name).getValue();
+        return result;
+    }
+
+    /**
+     * Returns value of VM option or default value.
+     *
+     * @param name         option's name
+     * @param defaultValue default value
+     * @return value of option or {@code defaultValue}, if option doesn't exist
+     * @throws NullPointerException if name is null
+     * @see #getVMOption(String)
+     */
+    public static String getVMOption(String name, String defaultValue) {
+        String result;
+        try {
+            result = getVMOption(name);
+        } catch (NoClassDefFoundError e) {
+            // compact1, compact2 support
+            result = defaultValue;
+        }
+        return result == null ? defaultValue : result;
+    }
+
+    /**
+     * Tests if the filename is valid filename for class file.
+     *
+     * @param filename tested filename
+     */
+    public static boolean isClassFile(String filename) {
+        // If the filename has a period after removing '.class', it's not valid class file
+        return endsWithIgnoreCase(filename, CLASSFILE_EXT)
+                && (filename.indexOf('.')
+                == (filename.length() - CLASSFILE_EXT.length()));
+    }
+
+    /**
+     * Converts the filename to classname.
+     *
+     * @param filename filename to convert
+     * @return corresponding classname.
+     * @throws AssertionError if filename isn't valid filename for class file -
+     *                        {@link #isClassFile(String)}
+     */
+    public static String fileNameToClassName(String filename) {
+        assert isClassFile(filename);
+        return filename.substring(0, filename.length() - CLASSFILE_EXT.length())
+                       .replace(File.separatorChar, '.');
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/Bar.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,5 @@
+public class Bar {
+  private static void staticMethod() { }
+  public void method() { }
+  protected Bar() { }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/ClassesDirTest.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test ClassesDirTest
+ * @bug 8012447
+ * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
+ * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox ClassesDirTest Foo Bar
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
+ * @run main ClassesDirTest prepare
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld classes
+ * @run main ClassesDirTest check ctw.log
+ * @summary testing of CompileTheWorld :: classes in directory
+ * @author igor.ignatyev@oracle.com
+ */
+
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+
+public class ClassesDirTest extends CtwTest {
+    private static final String[] SHOULD_CONTAIN
+            = {"# dir: classes", "Done (2 classes, 6 methods, "};
+
+    private ClassesDirTest() {
+        super(SHOULD_CONTAIN);
+    }
+
+    public static void main(String[] args) throws Exception {
+        new ClassesDirTest().run(args);
+    }
+
+    protected void prepare() throws Exception {
+        String path = "classes";
+        Files.createDirectory(Paths.get(path));
+        Files.move(Paths.get("Foo.class"), Paths.get(path, "Foo.class"),
+                StandardCopyOption.REPLACE_EXISTING);
+        Files.move(Paths.get("Bar.class"), Paths.get(path, "Bar.class"),
+                StandardCopyOption.REPLACE_EXISTING);
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/ClassesListTest.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test ClassesListTest
+ * @bug 8012447
+ * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
+ * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox ClassesListTest Foo Bar
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
+ * @run main ClassesListTest prepare
+ * @run main/othervm/timeout=600 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld classes.lst
+ * @run main ClassesListTest check ctw.log
+ * @summary testing of CompileTheWorld :: list of classes in file
+ * @author igor.ignatyev@oracle.com
+ */
+
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+
+public class ClassesListTest extends CtwTest {
+    private static final String[] SHOULD_CONTAIN
+            = {"# list: classes.lst", "Done (4 classes, "};
+
+    private ClassesListTest() {
+        super(SHOULD_CONTAIN);
+    }
+
+    public static void main(String[] args) throws Exception {
+        new ClassesListTest().run(args);
+    }
+
+    protected void prepare() throws Exception {
+        String path = "classes.lst";
+        Files.copy(Paths.get(System.getProperty("test.src"), path),
+                Paths.get(path), StandardCopyOption.REPLACE_EXISTING);
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/CtwTest.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.util.List;
+import java.util.Collections;
+import java.util.ArrayList;
+
+import java.io.File;
+import java.io.Writer;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.BufferedReader;
+
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+import java.nio.charset.Charset;
+
+import com.oracle.java.testlibrary.JDKToolFinder;
+import com.oracle.java.testlibrary.OutputAnalyzer;
+
+public abstract class CtwTest {
+    protected final String[] shouldContain;
+    protected CtwTest(String[] shouldContain) {
+        this.shouldContain = shouldContain;
+    }
+
+    public void run(String[] args) throws Exception {
+        if (args.length == 0) {
+            throw new Error("args is empty");
+        }
+        switch (args[0]) {
+            case "prepare":
+                prepare();
+                break;
+            case "check":
+                check(args);
+                break;
+            default:
+                throw new Error("unregonized action -- " + args[0]);
+        }
+    }
+
+    protected void prepare() throws Exception { }
+
+    protected void check(String[] args) throws Exception  {
+        if (args.length < 2) {
+            throw new Error("logfile isn't specified");
+        }
+        String logfile = args[1];
+        try (BufferedReader r = Files.newBufferedReader(Paths.get(logfile),
+                Charset.defaultCharset())) {
+            OutputAnalyzer output = readOutput(r);
+           for (String test : shouldContain) {
+                output.shouldContain(test);
+            }
+        }
+    }
+
+    private static OutputAnalyzer readOutput(BufferedReader reader)
+            throws IOException {
+        StringBuilder builder = new StringBuilder();
+        String eol = String.format("%n");
+        String line;
+
+        while ((line = reader.readLine()) != null) {
+            builder.append(line);
+            builder.append(eol);
+        }
+        return new OutputAnalyzer(builder.toString(), "");
+    }
+
+    protected void dump(OutputAnalyzer output, String name) {
+        try (Writer w = new FileWriter(name + ".out")) {
+            String s = output.getStdout();
+            w.write(s, s.length(), 0);
+        } catch (IOException io) {
+            io.printStackTrace();
+        }
+        try (Writer w = new FileWriter(name + ".err")) {
+            String s = output.getStderr();
+            w.write(s, s.length(), 0);
+        } catch (IOException io) {
+            io.printStackTrace();
+        }
+    }
+
+    protected ProcessBuilder createJarProcessBuilder(String... command)
+            throws Exception {
+        String javapath = JDKToolFinder.getJDKTool("jar");
+
+        ArrayList<String> args = new ArrayList<>();
+        args.add(javapath);
+        Collections.addAll(args, command);
+
+        return new ProcessBuilder(args.toArray(new String[args.size()]));
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/Foo.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,5 @@
+public class Foo {
+  private static void staticMethod() { }
+  public void method() { }
+  protected Foo() { }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/JarDirTest.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test JarDirTest
+ * @bug 8012447
+ * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
+ * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox JarDirTest Foo Bar
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
+ * @run main JarDirTest prepare
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld jars/*
+ * @run main JarDirTest check ctw.log
+ * @summary testing of CompileTheWorld :: jars in directory
+ * @author igor.ignatyev@oracle.com
+ */
+
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import com.oracle.java.testlibrary.OutputAnalyzer;
+
+public class JarDirTest extends CtwTest {
+    private static final String[] SHOULD_CONTAIN
+            = {"# jar_in_dir: jars",
+                    "# jar: jars" + File.separator +"foo.jar",
+                    "# jar: jars" + File.separator +"bar.jar",
+                    "Done (4 classes, 12 methods, "};
+
+    private JarDirTest() {
+        super(SHOULD_CONTAIN);
+    }
+
+    public static void main(String[] args) throws Exception {
+        new JarDirTest().run(args);
+    }
+
+    protected void prepare() throws Exception {
+        String path = "jars";
+        Files.createDirectory(Paths.get(path));
+
+        ProcessBuilder pb = createJarProcessBuilder("cf", "jars/foo.jar",
+                "Foo.class", "Bar.class");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        dump(output, "ctw-foo.jar");
+        output.shouldHaveExitValue(0);
+
+        pb = createJarProcessBuilder("cf", "jars/bar.jar", "Foo.class",
+                "Bar.class");
+        output = new OutputAnalyzer(pb.start());
+        dump(output, "ctw-bar.jar");
+        output.shouldHaveExitValue(0);
+    }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/JarsTest.java	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test JarsTest
+ * @bug 8012447
+ * @library /testlibrary /testlibrary/whitebox /testlibrary/ctw/src
+ * @build sun.hotspot.tools.ctw.CompileTheWorld sun.hotspot.WhiteBox JarsTest Foo Bar
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox Foo Bar
+ * @run main JarsTest prepare
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Dsun.hotspot.tools.ctw.logfile=ctw.log sun.hotspot.tools.ctw.CompileTheWorld foo.jar bar.jar
+ * @run main JarsTest check ctw.log
+ * @summary testing of CompileTheWorld :: jars
+ * @author igor.ignatyev@oracle.com
+ */
+
+import com.oracle.java.testlibrary.OutputAnalyzer;
+
+public class JarsTest extends CtwTest {
+    private static final String[] SHOULD_CONTAIN
+            = {"# jar: foo.jar", "# jar: bar.jar",
+                    "Done (4 classes, 12 methods, "};
+
+    private JarsTest() {
+        super(SHOULD_CONTAIN);
+    }
+
+    public static void main(String[] args) throws Exception {
+        new JarsTest().run(args);
+    }
+
+    protected void prepare() throws Exception {
+        ProcessBuilder pb = createJarProcessBuilder("cf", "foo.jar",
+                "Foo.class", "Bar.class");
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        dump(output, "ctw-foo.jar");
+        output.shouldHaveExitValue(0);
+
+        pb = createJarProcessBuilder("cf", "bar.jar", "Foo.class", "Bar.class");
+        output = new OutputAnalyzer(pb.start());
+        dump(output, "ctw-bar.jar");
+        output.shouldHaveExitValue(0);
+    }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/ctw/test/classes.lst	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,4 @@
+java.lang.String
+java.lang.Object
+Foo
+Bar
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/testlibrary/whitebox/Makefile	Fri Sep 13 00:25:18 2013 -0700
@@ -0,0 +1,63 @@
+#
+# Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.	See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+#
+
+ifneq "x$(ALT_BOOTDIR)" "x"
+	BOOTDIR := $(ALT_BOOTDIR)
+endif
+
+ifeq "x$(BOOTDIR)" "x"
+	JDK_HOME := $(shell dirname $(shell which java))/..
+else
+	JDK_HOME := $(BOOTDIR)
+endif
+
+SRC_DIR = ./
+BUILD_DIR = build
+OUTPUT_DIR = $(BUILD_DIR)/classes
+
+JAVAC = $(JDK_HOME)/bin/javac
+JAR = $(JDK_HOME)/bin/jar
+
+SRC_FILES = $(shell find $(SRC_DIR) -name '*.java')
+
+.PHONY: filelist clean cleantmp
+
+all: wb.jar cleantmp
+
+wb.jar: filelist
+	@mkdir -p $(OUTPUT_DIR)
+	$(JAVAC) -sourcepath $(SRC_DIR) -d $(OUTPUT_DIR) -cp $(OUTPUT_DIR) @filelist
+	$(JAR) cf wb.jar -C $(OUTPUT_DIR) .
+	@rm -rf $(OUTPUT_DIR)
+
+filelist: $(SRC_FILES)
+	@rm -f $@
+	@echo $(SRC_FILES) > $@
+
+clean: cleantmp
+	@rm -rf wb.jar
+
+cleantmp:
+	@rm -rf filelist
+	@rm -rf $(BUILD_DIR)