changeset 7163:a72a4192a36d hs25.60-b08

Merge
author amurillo
date Fri, 20 Mar 2015 09:06:17 -0700
parents 5755b2aee8e8 aefa2e84b424
children bf68e15dc8fe
files
diffstat 30 files changed, 255 insertions(+), 326 deletions(-) [+]
line wrap: on
line diff
--- a/make/bsd/makefiles/gcc.make	Wed Mar 18 13:56:56 2015 -0700
+++ b/make/bsd/makefiles/gcc.make	Fri Mar 20 09:06:17 2015 -0700
@@ -349,7 +349,7 @@
   # The macro takes the version with no dots, ex: 1070
   CFLAGS += -DMAC_OS_X_VERSION_MAX_ALLOWED=$(subst .,,$(MACOSX_VERSION_MIN)) \
             -mmacosx-version-min=$(MACOSX_VERSION_MIN)
-  LDFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN)
+  LFLAGS += -mmacosx-version-min=$(MACOSX_VERSION_MIN)
 endif
 
 
--- a/make/bsd/makefiles/saproc.make	Wed Mar 18 13:56:56 2015 -0700
+++ b/make/bsd/makefiles/saproc.make	Fri Mar 20 09:06:17 2015 -0700
@@ -110,6 +110,9 @@
 
 ifneq ($(OS_VENDOR), Darwin)
 SA_LFLAGS = $(MAPFLAG:FILENAME=$(SAMAPFILE))
+else
+# bring in minimum version argument or we'll fail on OSX 10.10
+SA_LFLAGS = $(LFLAGS)
 endif
 SA_LFLAGS += $(LDFLAGS_HASH_STYLE)
 
--- a/make/hotspot_version	Wed Mar 18 13:56:56 2015 -0700
+++ b/make/hotspot_version	Fri Mar 20 09:06:17 2015 -0700
@@ -35,7 +35,7 @@
 
 HS_MAJOR_VER=25
 HS_MINOR_VER=60
-HS_BUILD_NUMBER=07
+HS_BUILD_NUMBER=08
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=8
--- a/src/cpu/ppc/vm/ppc.ad	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/cpu/ppc/vm/ppc.ad	Fri Mar 20 09:06:17 2015 -0700
@@ -4418,11 +4418,11 @@
   interface(CONST_INTER);
 %}
 
-// constant 'float +0.0'.
+// Float Immediate: +0.0f.
 operand immF_0() %{
-  predicate((n->getf() == 0) &&
-            (fpclassify(n->getf()) == FP_ZERO) && (signbit(n->getf()) == 0));
+  predicate(jint_cast(n->getf()) == 0);
   match(ConF);
+  
   op_cost(0);
   format %{ %}
   interface(CONST_INTER);
--- a/src/cpu/sparc/vm/sparc.ad	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/cpu/sparc/vm/sparc.ad	Fri Mar 20 09:06:17 2015 -0700
@@ -3760,13 +3760,9 @@
   interface(CONST_INTER);
 %}
 
+// Double Immediate: +0.0d
 operand immD0() %{
-#ifdef _LP64
-  // on 64-bit architectures this comparision is faster
   predicate(jlong_cast(n->getd()) == 0);
-#else
-  predicate((n->getd() == 0) && (fpclass(n->getd()) == FP_PZERO));
-#endif
   match(ConD);
 
   op_cost(0);
@@ -3783,9 +3779,9 @@
   interface(CONST_INTER);
 %}
 
-// Float Immediate: 0
-operand immF0() %{
-  predicate((n->getf() == 0) && (fpclass(n->getf()) == FP_PZERO));
+// Float Immediate: +0.0f
+operand immF0() %{ 
+  predicate(jint_cast(n->getf()) == 0);  
   match(ConF);
 
   op_cost(0);
--- a/src/os/aix/vm/os_aix.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/os/aix/vm/os_aix.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -3987,11 +3987,6 @@
   return JNI_OK;
 }
 
-// this is called at the end of vm_initialization
-void os::init_3(void) {
-  return;
-}
-
 // Mark the polling page as unreadable
 void os::make_polling_page_unreadable(void) {
   if (!guard_memory((char*)_polling_page, Aix::page_size())) {
--- a/src/os/bsd/vm/os_bsd.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/os/bsd/vm/os_bsd.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -3745,9 +3745,6 @@
   return JNI_OK;
 }
 
-// this is called at the end of vm_initialization
-void os::init_3(void) { }
-
 // Mark the polling page as unreadable
 void os::make_polling_page_unreadable(void) {
   if( !guard_memory((char*)_polling_page, Bsd::page_size()) )
--- a/src/os/linux/vm/os_linux.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/os/linux/vm/os_linux.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -160,35 +160,6 @@
 // Declarations
 static void unpackTime(timespec* absTime, bool isAbsolute, jlong time);
 
-#ifdef JAVASE_EMBEDDED
-class MemNotifyThread: public Thread {
-  friend class VMStructs;
- public:
-  virtual void run();
-
- private:
-  static MemNotifyThread* _memnotify_thread;
-  int _fd;
-
- public:
-
-  // Constructor
-  MemNotifyThread(int fd);
-
-  // Tester
-  bool is_memnotify_thread() const { return true; }
-
-  // Printing
-  char* name() const { return (char*)"Linux MemNotify Thread"; }
-
-  // Returns the single instance of the MemNotifyThread
-  static MemNotifyThread* memnotify_thread() { return _memnotify_thread; }
-
-  // Create and start the single instance of MemNotifyThread
-  static void start();
-};
-#endif // JAVASE_EMBEDDED
-
 // utility functions
 
 static int SR_initialize();
@@ -4913,17 +4884,6 @@
   return JNI_OK;
 }
 
-// this is called at the end of vm_initialization
-void os::init_3(void) {
-#ifdef JAVASE_EMBEDDED
-  // Start the MemNotifyThread
-  if (LowMemoryProtection) {
-    MemNotifyThread::start();
-  }
-  return;
-#endif
-}
-
 // Mark the polling page as unreadable
 void os::make_polling_page_unreadable(void) {
   if( !guard_memory((char*)_polling_page, Linux::page_size()) )
@@ -6100,83 +6060,6 @@
   return strlen(buffer);
 }
 
-#ifdef JAVASE_EMBEDDED
-//
-// A thread to watch the '/dev/mem_notify' device, which will tell us when the OS is running low on memory.
-//
-MemNotifyThread* MemNotifyThread::_memnotify_thread = NULL;
-
-// ctor
-//
-MemNotifyThread::MemNotifyThread(int fd): Thread() {
-  assert(memnotify_thread() == NULL, "we can only allocate one MemNotifyThread");
-  _fd = fd;
-
-  if (os::create_thread(this, os::os_thread)) {
-    _memnotify_thread = this;
-    os::set_priority(this, NearMaxPriority);
-    os::start_thread(this);
-  }
-}
-
-// Where all the work gets done
-//
-void MemNotifyThread::run() {
-  assert(this == memnotify_thread(), "expected the singleton MemNotifyThread");
-
-  // Set up the select arguments
-  fd_set rfds;
-  if (_fd != -1) {
-    FD_ZERO(&rfds);
-    FD_SET(_fd, &rfds);
-  }
-
-  // Now wait for the mem_notify device to wake up
-  while (1) {
-    // Wait for the mem_notify device to signal us..
-    int rc = select(_fd+1, _fd != -1 ? &rfds : NULL, NULL, NULL, NULL);
-    if (rc == -1) {
-      perror("select!\n");
-      break;
-    } else if (rc) {
-      //ssize_t free_before = os::available_memory();
-      //tty->print ("Notified: Free: %dK \n",os::available_memory()/1024);
-
-      // The kernel is telling us there is not much memory left...
-      // try to do something about that
-
-      // If we are not already in a GC, try one.
-      if (!Universe::heap()->is_gc_active()) {
-        Universe::heap()->collect(GCCause::_allocation_failure);
-
-        //ssize_t free_after = os::available_memory();
-        //tty->print ("Post-Notify: Free: %dK\n",free_after/1024);
-        //tty->print ("GC freed: %dK\n", (free_after - free_before)/1024);
-      }
-      // We might want to do something like the following if we find the GC's are not helping...
-      // Universe::heap()->size_policy()->set_gc_time_limit_exceeded(true);
-    }
-  }
-}
-
-//
-// See if the /dev/mem_notify device exists, and if so, start a thread to monitor it.
-//
-void MemNotifyThread::start() {
-  int    fd;
-  fd = open ("/dev/mem_notify", O_RDONLY, 0);
-  if (fd < 0) {
-      return;
-  }
-
-  if (memnotify_thread() == NULL) {
-    new MemNotifyThread(fd);
-  }
-}
-
-#endif // JAVASE_EMBEDDED
-
-
 /////////////// Unit tests ///////////////
 
 #ifndef PRODUCT
--- a/src/os/solaris/vm/os_solaris.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/os/solaris/vm/os_solaris.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -5194,10 +5194,6 @@
   return JNI_OK;
 }
 
-void os::init_3(void) {
-  return;
-}
-
 // Mark the polling page as unreadable
 void os::make_polling_page_unreadable(void) {
   if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 )
--- a/src/os/windows/vm/os_windows.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/os/windows/vm/os_windows.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -4062,10 +4062,6 @@
   return JNI_OK;
 }
 
-void os::init_3(void) {
-  return;
-}
-
 // Mark the polling page as unreadable
 void os::make_polling_page_unreadable(void) {
   DWORD old_status;
--- a/src/share/vm/classfile/defaultMethods.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/classfile/defaultMethods.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2015, 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
@@ -1091,6 +1091,7 @@
     }
     // update idnum for new location
     merged_methods->at(i)->set_method_idnum(i);
+    merged_methods->at(i)->set_orig_method_idnum(i);
   }
 
   // Verify correct order
--- a/src/share/vm/oops/constMethod.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/constMethod.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2015, 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
@@ -222,6 +222,7 @@
   u2                _max_stack;                  // Maximum number of entries on the expression stack
   u2                _max_locals;                 // Number of local variables used by this method
   u2                _size_of_parameters;         // size of the parameter block (receiver + arguments) in words
+  u2                _orig_method_idnum;          // Original unique identification number for the method
 
   // Constructor
   ConstMethod(int byte_code_size,
@@ -475,6 +476,9 @@
   u2 method_idnum() const                        { return _method_idnum; }
   void set_method_idnum(u2 idnum)                { _method_idnum = idnum; }
 
+  u2 orig_method_idnum() const                   { return _orig_method_idnum; }
+  void set_orig_method_idnum(u2 idnum)           { _orig_method_idnum = idnum; }
+
   // max stack
   int  max_stack() const                         { return _max_stack; }
   void set_max_stack(int size)                   { _max_stack = size; }
--- a/src/share/vm/oops/cpCache.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/cpCache.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2015, 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
@@ -449,7 +449,6 @@
           new_method->name()->as_C_string(),
           new_method->signature()->as_C_string()));
       }
-
       return true;
     }
 
@@ -477,7 +476,6 @@
         new_method->name()->as_C_string(),
         new_method->signature()->as_C_string()));
     }
-
     return true;
   }
 
@@ -498,41 +496,39 @@
     // _f1 == NULL || !_f1->is_method() are OK here
     return true;
   }
-  // return false if _f1 refers to an old or an obsolete method
+  // return false if _f1 refers to a non-deleted old or obsolete method
   return (NOT_PRODUCT(_f1->is_valid() &&) _f1->is_method() &&
-          !((Method*)_f1)->is_old() && !((Method*)_f1)->is_obsolete());
+          (f1_as_method()->is_deleted() ||
+          (!f1_as_method()->is_old() && !f1_as_method()->is_obsolete())));
 }
 
-bool ConstantPoolCacheEntry::is_interesting_method_entry(Klass* k) {
+Method* ConstantPoolCacheEntry::get_interesting_method_entry(Klass* k) {
   if (!is_method_entry()) {
     // not a method entry so not interesting by default
-    return false;
+    return NULL;
   }
-
   Method* m = NULL;
   if (is_vfinal()) {
     // virtual and final so _f2 contains method ptr instead of vtable index
     m = f2_as_vfinal_method();
   } else if (is_f1_null()) {
     // NULL _f1 means this is a virtual entry so also not interesting
-    return false;
+    return NULL;
   } else {
     if (!(_f1->is_method())) {
       // _f1 can also contain a Klass* for an interface
-      return false;
+      return NULL;
     }
     m = f1_as_method();
   }
-
   assert(m != NULL && m->is_method(), "sanity check");
   if (m == NULL || !m->is_method() || (k != NULL && m->method_holder() != k)) {
     // robustness for above sanity checks or method is not in
     // the interesting class
-    return false;
+    return NULL;
   }
-
   // the method is in the interesting class so the entry is interesting
-  return true;
+  return m;
 }
 #endif // INCLUDE_JVMTI
 
@@ -609,7 +605,7 @@
 // If any entry of this ConstantPoolCache points to any of
 // old_methods, replace it with the corresponding new_method.
 void ConstantPoolCache::adjust_method_entries(Method** old_methods, Method** new_methods,
-                                                     int methods_length, bool * trace_name_printed) {
+                                              int methods_length, bool * trace_name_printed) {
 
   if (methods_length == 0) {
     // nothing to do if there are no methods
@@ -620,7 +616,7 @@
   Klass* old_holder = old_methods[0]->method_holder();
 
   for (int i = 0; i < length(); i++) {
-    if (!entry_at(i)->is_interesting_method_entry(old_holder)) {
+    if (entry_at(i)->get_interesting_method_entry(old_holder) == NULL) {
       // skip uninteresting methods
       continue;
     }
@@ -644,10 +640,33 @@
   }
 }
 
+// If any entry of this ConstantPoolCache points to any of
+// old_methods, replace it with the corresponding new_method.
+void ConstantPoolCache::adjust_method_entries(InstanceKlass* holder, bool * trace_name_printed) {
+  for (int i = 0; i < length(); i++) {
+    ConstantPoolCacheEntry* entry = entry_at(i);
+    Method* old_method = entry->get_interesting_method_entry(holder);
+    if (old_method == NULL || !old_method->is_old()) {
+      continue; // skip uninteresting entries
+    }
+    if (old_method->is_deleted()) {
+      // clean up entries with deleted methods
+      entry->initialize_entry(entry->constant_pool_index());
+      continue;
+    }
+    Method* new_method = holder->method_with_idnum(old_method->orig_method_idnum());
+
+    assert(new_method != NULL, "method_with_idnum() should not be NULL");
+    assert(old_method != new_method, "sanity check");
+
+    entry_at(i)->adjust_method_entry(old_method, new_method, trace_name_printed);
+  }
+}
+
 // the constant pool cache should never contain old or obsolete methods
 bool ConstantPoolCache::check_no_old_or_obsolete_entries() {
   for (int i = 1; i < length(); i++) {
-    if (entry_at(i)->is_interesting_method_entry(NULL) &&
+    if (entry_at(i)->get_interesting_method_entry(NULL) != NULL &&
         !entry_at(i)->check_no_old_or_obsolete_entries()) {
       return false;
     }
@@ -657,7 +676,7 @@
 
 void ConstantPoolCache::dump_cache() {
   for (int i = 1; i < length(); i++) {
-    if (entry_at(i)->is_interesting_method_entry(NULL)) {
+    if (entry_at(i)->get_interesting_method_entry(NULL) != NULL) {
       entry_at(i)->print(tty, i);
     }
   }
--- a/src/share/vm/oops/cpCache.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/cpCache.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2015, 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
@@ -378,9 +378,9 @@
   // printed the klass name so that other routines in the adjust_*
   // group don't print the klass name.
   bool adjust_method_entry(Method* old_method, Method* new_method,
-         bool * trace_name_printed);
+         bool* trace_name_printed);
   bool check_no_old_or_obsolete_entries();
-  bool is_interesting_method_entry(Klass* k);
+  Method* get_interesting_method_entry(Klass* k);
 #endif // INCLUDE_JVMTI
 
   // Debugging & Printing
@@ -477,7 +477,8 @@
   // printed the klass name so that other routines in the adjust_*
   // group don't print the klass name.
   void adjust_method_entries(Method** old_methods, Method** new_methods,
-                             int methods_length, bool * trace_name_printed);
+                             int methods_length, bool* trace_name_printed);
+  void adjust_method_entries(InstanceKlass* holder, bool* trace_name_printed);
   bool check_no_old_or_obsolete_entries();
   void dump_cache();
 #endif // INCLUDE_JVMTI
--- a/src/share/vm/oops/instanceKlass.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/instanceKlass.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -2798,30 +2798,33 @@
 // not yet in the vtable due to concurrent subclass define and superinterface
 // redefinition
 // Note: those in the vtable, should have been updated via adjust_method_entries
-void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods,
-                                           int methods_length, bool* trace_name_printed) {
+void InstanceKlass::adjust_default_methods(InstanceKlass* holder, bool* trace_name_printed) {
   // search the default_methods for uses of either obsolete or EMCP methods
   if (default_methods() != NULL) {
-    for (int j = 0; j < methods_length; j++) {
-      Method* old_method = old_methods[j];
-      Method* new_method = new_methods[j];
-
-      for (int index = 0; index < default_methods()->length(); index ++) {
-        if (default_methods()->at(index) == old_method) {
-          default_methods()->at_put(index, new_method);
-          if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
-            if (!(*trace_name_printed)) {
-              // RC_TRACE_MESG macro has an embedded ResourceMark
-              RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s",
-                             external_name(),
-                             old_method->method_holder()->external_name()));
-              *trace_name_printed = true;
-            }
-            RC_TRACE(0x00100000, ("default method update: %s(%s) ",
-                                  new_method->name()->as_C_string(),
-                                  new_method->signature()->as_C_string()));
-          }
+    for (int index = 0; index < default_methods()->length(); index ++) {
+      Method* old_method = default_methods()->at(index);
+      if (old_method == NULL || old_method->method_holder() != holder || !old_method->is_old()) {
+        continue; // skip uninteresting entries
+      }
+      assert(!old_method->is_deleted(), "default methods may not be deleted");
+
+      Method* new_method = holder->method_with_idnum(old_method->orig_method_idnum());
+
+      assert(new_method != NULL, "method_with_idnum() should not be NULL");
+      assert(old_method != new_method, "sanity check");
+
+      default_methods()->at_put(index, new_method);
+      if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
+        if (!(*trace_name_printed)) {
+          // RC_TRACE_MESG macro has an embedded ResourceMark
+          RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s",
+                         external_name(),
+                         old_method->method_holder()->external_name()));
+          *trace_name_printed = true;
         }
+        RC_TRACE(0x00100000, ("default method update: %s(%s) ",
+                              new_method->name()->as_C_string(),
+                              new_method->signature()->as_C_string()));
       }
     }
   }
--- a/src/share/vm/oops/instanceKlass.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/instanceKlass.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -959,8 +959,7 @@
   Method* method_at_itable(Klass* holder, int index, TRAPS);
 
 #if INCLUDE_JVMTI
-  void adjust_default_methods(Method** old_methods, Method** new_methods,
-                              int methods_length, bool* trace_name_printed);
+  void adjust_default_methods(InstanceKlass* holder, bool* trace_name_printed);
 #endif // INCLUDE_JVMTI
 
   // Garbage collection
--- a/src/share/vm/oops/klassVtable.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/klassVtable.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -860,44 +860,43 @@
   }
   return updated;
 }
-void klassVtable::adjust_method_entries(Method** old_methods, Method** new_methods,
-                                        int methods_length, bool * trace_name_printed) {
-  // search the vtable for uses of either obsolete or EMCP methods
-  for (int j = 0; j < methods_length; j++) {
-    Method* old_method = old_methods[j];
-    Method* new_method = new_methods[j];
 
-    // In the vast majority of cases we could get the vtable index
-    // by using:  old_method->vtable_index()
-    // However, there are rare cases, eg. sun.awt.X11.XDecoratedPeer.getX()
-    // in sun.awt.X11.XFramePeer where methods occur more than once in the
-    // vtable, so, alas, we must do an exhaustive search.
-    for (int index = 0; index < length(); index++) {
-      if (unchecked_method_at(index) == old_method) {
-        put_method_at(new_method, index);
-          // For default methods, need to update the _default_methods array
-          // which can only have one method entry for a given signature
-          bool updated_default = false;
-          if (old_method->is_default_method()) {
-            updated_default = adjust_default_method(index, old_method, new_method);
-          }
+// search the vtable for uses of either obsolete or EMCP methods
+void klassVtable::adjust_method_entries(InstanceKlass* holder, bool * trace_name_printed) {
+  int prn_enabled = 0;
+  for (int index = 0; index < length(); index++) {
+    Method* old_method = unchecked_method_at(index);
+    if (old_method == NULL || old_method->method_holder() != holder || !old_method->is_old()) {
+      continue; // skip uninteresting entries
+    }
+    assert(!old_method->is_deleted(), "vtable methods may not be deleted");
 
-        if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
-          if (!(*trace_name_printed)) {
-            // RC_TRACE_MESG macro has an embedded ResourceMark
-            RC_TRACE_MESG(("adjust: klassname=%s for methods from name=%s",
-                           klass()->external_name(),
-                           old_method->method_holder()->external_name()));
-            *trace_name_printed = true;
-          }
-          // RC_TRACE macro has an embedded ResourceMark
-          RC_TRACE(0x00100000, ("vtable method update: %s(%s), updated default = %s",
-                                new_method->name()->as_C_string(),
-                                new_method->signature()->as_C_string(),
-                                updated_default ? "true" : "false"));
-        }
-        // cannot 'break' here; see for-loop comment above.
+    Method* new_method = holder->method_with_idnum(old_method->orig_method_idnum());
+
+    assert(new_method != NULL, "method_with_idnum() should not be NULL");
+    assert(old_method != new_method, "sanity check");
+
+    put_method_at(new_method, index);
+    // For default methods, need to update the _default_methods array
+    // which can only have one method entry for a given signature
+    bool updated_default = false;
+    if (old_method->is_default_method()) {
+      updated_default = adjust_default_method(index, old_method, new_method);
+    }
+
+    if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
+      if (!(*trace_name_printed)) {
+        // RC_TRACE_MESG macro has an embedded ResourceMark
+        RC_TRACE_MESG(("adjust: klassname=%s for methods from name=%s",
+                       klass()->external_name(),
+                       old_method->method_holder()->external_name()));
+        *trace_name_printed = true;
       }
+      // RC_TRACE macro has an embedded ResourceMark
+      RC_TRACE(0x00100000, ("vtable method update: %s(%s), updated default = %s",
+                            new_method->name()->as_C_string(),
+                            new_method->signature()->as_C_string(),
+                            updated_default ? "true" : "false"));
     }
   }
 }
@@ -1190,37 +1189,35 @@
 }
 
 #if INCLUDE_JVMTI
-void klassItable::adjust_method_entries(Method** old_methods, Method** new_methods,
-                                        int methods_length, bool * trace_name_printed) {
-  // search the itable for uses of either obsolete or EMCP methods
-  for (int j = 0; j < methods_length; j++) {
-    Method* old_method = old_methods[j];
-    Method* new_method = new_methods[j];
-    itableMethodEntry* ime = method_entry(0);
+// search the itable for uses of either obsolete or EMCP methods
+void klassItable::adjust_method_entries(InstanceKlass* holder, bool * trace_name_printed) {
 
-    // The itable can describe more than one interface and the same
-    // method signature can be specified by more than one interface.
-    // This means we have to do an exhaustive search to find all the
-    // old_method references.
-    for (int i = 0; i < _size_method_table; i++) {
-      if (ime->method() == old_method) {
-        ime->initialize(new_method);
+  itableMethodEntry* ime = method_entry(0);
+  for (int i = 0; i < _size_method_table; i++, ime++) {
+    Method* old_method = ime->method();
+    if (old_method == NULL || old_method->method_holder() != holder || !old_method->is_old()) {
+      continue; // skip uninteresting entries
+    }
+    assert(!old_method->is_deleted(), "itable methods may not be deleted");
 
-        if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
-          if (!(*trace_name_printed)) {
-            // RC_TRACE_MESG macro has an embedded ResourceMark
-            RC_TRACE_MESG(("adjust: name=%s",
-              old_method->method_holder()->external_name()));
-            *trace_name_printed = true;
-          }
-          // RC_TRACE macro has an embedded ResourceMark
-          RC_TRACE(0x00200000, ("itable method update: %s(%s)",
-            new_method->name()->as_C_string(),
-            new_method->signature()->as_C_string()));
-        }
-        // cannot 'break' here; see for-loop comment above.
+    Method* new_method = holder->method_with_idnum(old_method->orig_method_idnum());
+
+    assert(new_method != NULL, "method_with_idnum() should not be NULL");
+    assert(old_method != new_method, "sanity check");
+
+    ime->initialize(new_method);
+
+    if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
+      if (!(*trace_name_printed)) {
+        // RC_TRACE_MESG macro has an embedded ResourceMark
+        RC_TRACE_MESG(("adjust: name=%s",
+          old_method->method_holder()->external_name()));
+        *trace_name_printed = true;
       }
-      ime++;
+      // RC_TRACE macro has an embedded ResourceMark
+      RC_TRACE(0x00200000, ("itable method update: %s(%s)",
+        new_method->name()->as_C_string(),
+        new_method->signature()->as_C_string()));
     }
   }
 }
--- a/src/share/vm/oops/klassVtable.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/klassVtable.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -98,8 +98,7 @@
   // printed the klass name so that other routines in the adjust_*
   // group don't print the klass name.
   bool adjust_default_method(int vtable_index, Method* old_method, Method* new_method);
-  void adjust_method_entries(Method** old_methods, Method** new_methods,
-                             int methods_length, bool * trace_name_printed);
+  void adjust_method_entries(InstanceKlass* holder, bool * trace_name_printed);
   bool check_no_old_or_obsolete_entries();
   void dump_vtable();
 #endif // INCLUDE_JVMTI
@@ -288,8 +287,7 @@
   // trace_name_printed is set to true if the current call has
   // printed the klass name so that other routines in the adjust_*
   // group don't print the klass name.
-  void adjust_method_entries(Method** old_methods, Method** new_methods,
-                             int methods_length, bool * trace_name_printed);
+  void adjust_method_entries(InstanceKlass* holder, bool * trace_name_printed);
   bool check_no_old_or_obsolete_entries();
   void dump_itable();
 #endif // INCLUDE_JVMTI
--- a/src/share/vm/oops/method.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/method.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -1419,6 +1419,7 @@
       for (int i = 0; i < length; i++) {
         Method* m = methods->at(i);
         m->set_method_idnum(i);
+        m->set_orig_method_idnum(i);
       }
     }
   }
--- a/src/share/vm/oops/method.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/oops/method.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -265,6 +265,9 @@
   u2 method_idnum() const           { return constMethod()->method_idnum(); }
   void set_method_idnum(u2 idnum)   { constMethod()->set_method_idnum(idnum); }
 
+  u2 orig_method_idnum() const           { return constMethod()->orig_method_idnum(); }
+  void set_orig_method_idnum(u2 idnum)   { constMethod()->set_orig_method_idnum(idnum); }
+
   // code size
   int code_size() const                  { return constMethod()->code_size(); }
 
@@ -714,6 +717,8 @@
   void set_is_old()                                 { _access_flags.set_is_old(); }
   bool is_obsolete() const                          { return access_flags().is_obsolete(); }
   void set_is_obsolete()                            { _access_flags.set_is_obsolete(); }
+  bool is_deleted() const                           { return access_flags().is_deleted(); }
+  void set_is_deleted()                             { _access_flags.set_is_deleted(); }
   bool on_stack() const                             { return access_flags().on_stack(); }
   void set_on_stack(const bool value);
 
--- a/src/share/vm/prims/jvmtiRedefineClasses.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/prims/jvmtiRedefineClasses.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2015, 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
@@ -777,9 +777,13 @@
           Method* idnum_owner = scratch_class->method_with_idnum(old_num);
           if (idnum_owner != NULL) {
             // There is already a method assigned this idnum -- switch them
+            // Take current and original idnum from the new_method
             idnum_owner->set_method_idnum(new_num);
+            idnum_owner->set_orig_method_idnum(k_new_method->orig_method_idnum());
           }
+          // Take current and original idnum from the old_method
           k_new_method->set_method_idnum(old_num);
+          k_new_method->set_orig_method_idnum(k_old_method->orig_method_idnum());
           if (thread->has_pending_exception()) {
             return JVMTI_ERROR_OUT_OF_MEMORY;
           }
@@ -812,9 +816,12 @@
         Method* idnum_owner = scratch_class->method_with_idnum(num);
         if (idnum_owner != NULL) {
           // There is already a method assigned this idnum -- switch them
+          // Take current and original idnum from the new_method
           idnum_owner->set_method_idnum(new_num);
+          idnum_owner->set_orig_method_idnum(k_new_method->orig_method_idnum());
         }
         k_new_method->set_method_idnum(num);
+        k_new_method->set_orig_method_idnum(num);
         if (thread->has_pending_exception()) {
           return JVMTI_ERROR_OUT_OF_MEMORY;
         }
@@ -3322,6 +3329,7 @@
   // This is a very busy routine. We don't want too much tracing
   // printed out.
   bool trace_name_printed = false;
+  InstanceKlass *the_class = InstanceKlass::cast(_the_class_oop);
 
   // Very noisy: only enable this call if you are trying to determine
   // that a specific class gets found by this routine.
@@ -3333,10 +3341,8 @@
   // If the class being redefined is java.lang.Object, we need to fix all
   // array class vtables also
   if (k->oop_is_array() && _the_class_oop == SystemDictionary::Object_klass()) {
-    k->vtable()->adjust_method_entries(_matching_old_methods,
-                                       _matching_new_methods,
-                                       _matching_methods_length,
-                                       &trace_name_printed);
+    k->vtable()->adjust_method_entries(the_class, &trace_name_printed);
+
   } else if (k->oop_is_instance()) {
     HandleMark hm(_thread);
     InstanceKlass *ik = InstanceKlass::cast(k);
@@ -3376,14 +3382,9 @@
         || ik->is_subtype_of(_the_class_oop))) {
       // ik->vtable() creates a wrapper object; rm cleans it up
       ResourceMark rm(_thread);
-      ik->vtable()->adjust_method_entries(_matching_old_methods,
-                                          _matching_new_methods,
-                                          _matching_methods_length,
-                                          &trace_name_printed);
-      ik->adjust_default_methods(_matching_old_methods,
-                                 _matching_new_methods,
-                                 _matching_methods_length,
-                                 &trace_name_printed);
+
+      ik->vtable()->adjust_method_entries(the_class, &trace_name_printed);
+      ik->adjust_default_methods(the_class, &trace_name_printed);
     }
 
     // If the current class has an itable and we are either redefining an
@@ -3396,10 +3397,8 @@
         || ik->is_subclass_of(_the_class_oop))) {
       // ik->itable() creates a wrapper object; rm cleans it up
       ResourceMark rm(_thread);
-      ik->itable()->adjust_method_entries(_matching_old_methods,
-                                          _matching_new_methods,
-                                          _matching_methods_length,
-                                          &trace_name_printed);
+
+      ik->itable()->adjust_method_entries(the_class, &trace_name_printed);
     }
 
     // The constant pools in other classes (other_cp) can refer to
@@ -3423,10 +3422,7 @@
       other_cp = constantPoolHandle(ik->constants());
       cp_cache = other_cp->cache();
       if (cp_cache != NULL) {
-        cp_cache->adjust_method_entries(_matching_old_methods,
-                                        _matching_new_methods,
-                                        _matching_methods_length,
-                                        &trace_name_printed);
+        cp_cache->adjust_method_entries(the_class, &trace_name_printed);
       }
     }
 
@@ -3555,6 +3551,7 @@
 
       // obsolete methods need a unique idnum so they become new entries in
       // the jmethodID cache in InstanceKlass
+      assert(old_method->method_idnum() == new_method->method_idnum(), "must match");
       u2 num = InstanceKlass::cast(_the_class_oop)->next_method_idnum();
       if (num != ConstMethod::UNSET_IDNUM) {
         old_method->set_method_idnum(num);
@@ -3575,7 +3572,8 @@
     assert(!old_method->has_vtable_index(),
            "cannot delete methods with vtable entries");;
 
-    // Mark all deleted methods as old and obsolete
+    // Mark all deleted methods as old, obsolete and deleted
+    old_method->set_is_deleted();
     old_method->set_is_old();
     old_method->set_is_obsolete();
     ++obsolete_count;
@@ -4164,7 +4162,7 @@
       no_old_methods = false;
     }
 
-    // the constant pool cache should never contain old or obsolete methods
+    // the constant pool cache should never contain non-deleted old or obsolete methods
     if (ik->constants() != NULL &&
         ik->constants()->cache() != NULL &&
         !ik->constants()->cache()->check_no_old_or_obsolete_entries()) {
--- a/src/share/vm/runtime/globals.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/runtime/globals.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -2048,9 +2048,6 @@
           "Provide more detailed and expensive TLAB statistics "            \
           "(with PrintTLAB)")                                               \
                                                                             \
-  EMBEDDED_ONLY(product(bool, LowMemoryProtection, true,                    \
-          "Enable LowMemoryProtection"))                                    \
-                                                                            \
   product_pd(bool, NeverActAsServerClassMachine,                            \
           "Never act like a server-class machine")                          \
                                                                             \
--- a/src/share/vm/runtime/os.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/runtime/os.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -159,7 +159,6 @@
   static void init_globals(void) {             // Called from init_globals() in init.cpp
     init_globals_ext();
   }
-  static void init_3(void);                    // Called at the end of vm init
 
   // File names are case-insensitive on windows only
   // Override me as needed
--- a/src/share/vm/runtime/thread.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/runtime/thread.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -3690,9 +3690,6 @@
       }
   }
 
-  // Give os specific code one last chance to start
-  os::init_3();
-
   create_vm_timer.end();
 #ifdef ASSERT
   _vm_complete = true;
--- a/src/share/vm/services/management.cpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/services/management.cpp	Fri Mar 20 09:06:17 2015 -0700
@@ -155,11 +155,14 @@
     // Load and initialize the sun.management.Agent class
     // invoke startAgent method to start the management server
     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
-    Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(),
+    Klass* k = SystemDictionary::resolve_or_null(vmSymbols::sun_management_Agent(),
                                                    loader,
                                                    Handle(),
-                                                   true,
-                                                   CHECK);
+                                                   THREAD);
+    if (k == NULL) {
+      vm_exit_during_initialization("Management agent initialization failure: "
+          "class sun.management.Agent not found.");
+    }
     instanceKlassHandle ik (THREAD, k);
 
     JavaValue result(T_VOID);
--- a/src/share/vm/utilities/accessFlags.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/utilities/accessFlags.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -54,7 +54,8 @@
   JVM_ACC_IS_OLD                  = 0x00010000,     // RedefineClasses() has replaced this method
   JVM_ACC_IS_OBSOLETE             = 0x00020000,     // RedefineClasses() has made method obsolete
   JVM_ACC_IS_PREFIXED_NATIVE      = 0x00040000,     // JVMTI has prefixed this native method
-  JVM_ACC_ON_STACK                = 0x00080000,     // RedefinedClasses() is used on the stack
+  JVM_ACC_ON_STACK                = 0x00080000,     // RedefineClasses() was used on the stack
+  JVM_ACC_IS_DELETED              = 0x00008000,     // RedefineClasses() has deleted this method
 
   // Klass* flags
   JVM_ACC_HAS_MIRANDA_METHODS     = 0x10000000,     // True if this class has miranda methods in it's vtable
@@ -131,6 +132,7 @@
   bool has_jsrs                () const { return (_flags & JVM_ACC_HAS_JSRS               ) != 0; }
   bool is_old                  () const { return (_flags & JVM_ACC_IS_OLD                 ) != 0; }
   bool is_obsolete             () const { return (_flags & JVM_ACC_IS_OBSOLETE            ) != 0; }
+  bool is_deleted              () const { return (_flags & JVM_ACC_IS_DELETED             ) != 0; }
   bool is_prefixed_native      () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE     ) != 0; }
 
   // Klass* flags
@@ -196,6 +198,7 @@
   void set_has_jsrs()                  { atomic_set_bits(JVM_ACC_HAS_JSRS);                }
   void set_is_old()                    { atomic_set_bits(JVM_ACC_IS_OLD);                  }
   void set_is_obsolete()               { atomic_set_bits(JVM_ACC_IS_OBSOLETE);             }
+  void set_is_deleted()                { atomic_set_bits(JVM_ACC_IS_DELETED);              }
   void set_is_prefixed_native()        { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE);      }
 
   void clear_not_c1_compilable()       { atomic_clear_bits(JVM_ACC_NOT_C1_COMPILABLE);       }
--- a/src/share/vm/utilities/globalDefinitions_gcc.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/utilities/globalDefinitions_gcc.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -44,14 +44,6 @@
 #endif // SOLARIS
 
 #include <math.h>
-#ifndef FP_PZERO
-// Linux doesn't have positive/negative zero
-#define FP_PZERO FP_ZERO
-#endif
-#if (!defined fpclass) && ((!defined SPARC) || (!defined SOLARIS))
-#define fpclass fpclassify
-#endif
-
 #include <time.h>
 #include <fcntl.h>
 #include <dlfcn.h>
--- a/src/share/vm/utilities/globalDefinitions_sparcWorks.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/utilities/globalDefinitions_sparcWorks.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -48,15 +48,6 @@
 # include <ieeefp.h>
 #endif
 # include <math.h>
-#ifdef LINUX
-#ifndef FP_PZERO
-  // Linux doesn't have positive/negative zero
-  #define FP_PZERO FP_ZERO
-#endif
-#ifndef fpclass
-  #define fpclass fpclassify
-#endif
-#endif
 # include <time.h>
 # include <fcntl.h>
 # include <dlfcn.h>
--- a/src/share/vm/utilities/globalDefinitions_xlc.hpp	Wed Mar 18 13:56:56 2015 -0700
+++ b/src/share/vm/utilities/globalDefinitions_xlc.hpp	Fri Mar 20 09:06:17 2015 -0700
@@ -41,14 +41,6 @@
 #include <wchar.h>
 
 #include <math.h>
-#ifndef FP_PZERO
-// Linux doesn't have positive/negative zero
-#define FP_PZERO FP_ZERO
-#endif
-#if (!defined fpclass)
-#define fpclass fpclassify
-#endif
-
 #include <time.h>
 #include <fcntl.h>
 #include <dlfcn.h>
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/loopopts/ConstFPVectorization.java	Fri Mar 20 09:06:17 2015 -0700
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2015, 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
+ * @bug 8074869
+ * @summary C2 code generator can replace -0.0f with +0.0f on Linux
+ * @run main ConstFPVectorization 8
+ * @author volker.simonis@gmail.com
+ *
+ */
+
+public class ConstFPVectorization {
+
+    static float[] f = new float[16];
+    static double[] d = new double[16];
+
+    static void floatLoop(int count) {
+        for (int i = 0; i < count; i++) {
+            f[i] = -0.0f;
+        }
+    }
+
+    static void doubleLoop(int count) {
+        for (int i = 0; i < count; i++) {
+            d[i] = -0.0d;
+        }
+    }
+
+    public static void main(String args[]) {
+        for (int i = 0; i < 10_000; i++) {
+            floatLoop(Integer.parseInt(args[0]));
+            doubleLoop(Integer.parseInt(args[0]));
+        }
+        for (int i = 0; i < Integer.parseInt(args[0]); i++) {
+            if (Float.floatToRawIntBits(f[i]) != Float.floatToRawIntBits(-0.0f))
+                throw new Error("Float error at index " + i);
+            if (Double.doubleToRawLongBits(d[i]) != Double.doubleToRawLongBits(-0.0d))
+                throw new Error("Double error at index " + i);
+        }
+    }
+}