--- a/hotspot/src/share/vm/logging/logTag.hpp	Thu Apr 07 15:01:56 2016 +0000
+++ b/hotspot/src/share/vm/logging/logTag.hpp	Thu Apr 07 13:11:15 2016 -0400
@@ -48,6 +48,7 @@
   LOG_TAG(classpath) \
   LOG_TAG(compaction) \
   LOG_TAG(constraints) \
+  LOG_TAG(coops) \
   LOG_TAG(cpu) \
   LOG_TAG(cset) \
   LOG_TAG(defaultmethods) \

--- a/hotspot/src/share/vm/memory/universe.cpp	Thu Apr 07 15:01:56 2016 +0000
+++ b/hotspot/src/share/vm/memory/universe.cpp	Thu Apr 07 13:11:15 2016 -0400
@@ -747,8 +747,10 @@
 
     Universe::set_narrow_ptrs_base(Universe::narrow_oop_base());
 
-    if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) {
-      Universe::print_compressed_oops_mode(tty);
+    if (log_is_enabled(Info, gc, heap, coops)) {
+      ResourceMark rm;
+      outputStream* logst = Log(gc, heap, coops)::info_stream();
+      Universe::print_compressed_oops_mode(logst);
     }
 
     // Tell tests in which mode we run.
@@ -776,8 +778,8 @@
 }
 
 void Universe::print_compressed_oops_mode(outputStream* st) {
-  st->print("heap address: " PTR_FORMAT ", size: " SIZE_FORMAT " MB",
-              p2i(Universe::heap()->base()), Universe::heap()->reserved_region().byte_size()/M);
+  st->print("Heap address: " PTR_FORMAT ", size: " SIZE_FORMAT " MB",
+            p2i(Universe::heap()->base()), Universe::heap()->reserved_region().byte_size()/M);
 
   st->print(", Compressed Oops mode: %s", narrow_oop_mode_to_string(narrow_oop_mode()));
 

--- a/hotspot/src/share/vm/memory/virtualspace.cpp	Thu Apr 07 15:01:56 2016 +0000
+++ b/hotspot/src/share/vm/memory/virtualspace.cpp	Thu Apr 07 13:11:15 2016 -0400
@@ -24,6 +24,8 @@
 
 #include "precompiled.hpp"
 #include "code/codeCacheExtensions.hpp"
+#include "logging/log.hpp"
+#include "memory/resourceArea.hpp"
 #include "memory/virtualspace.hpp"
 #include "oops/markOop.hpp"
 #include "oops/oop.inline.hpp"
@@ -78,10 +80,7 @@
     // Different reserve address may be acceptable in other cases
     // but for compressed oops heap should be at requested address.
     assert(UseCompressedOops, "currently requested address used only for compressed oops");
-    if (PrintCompressedOopsMode) {
-      tty->cr();
-      tty->print_cr("Reserved memory not at requested address: " PTR_FORMAT " vs " PTR_FORMAT, p2i(base), p2i(requested_address));
-    }
+    log_debug(gc, heap, coops)("Reserved memory not at requested address: " PTR_FORMAT " vs " PTR_FORMAT, p2i(base), p2i(requested_address));
     // OS ignored requested address. Try different address.
     if (special) {
       if (!os::release_memory_special(base, size)) {
@@ -143,10 +142,7 @@
       // failed; try to reserve regular memory below
       if (UseLargePages && (!FLAG_IS_DEFAULT(UseLargePages) ||
                             !FLAG_IS_DEFAULT(LargePageSizeInBytes))) {
-        if (PrintCompressedOopsMode) {
-          tty->cr();
-          tty->print_cr("Reserve regular memory without large pages.");
-        }
+        log_debug(gc, heap, coops)("Reserve regular memory without large pages");
       }
     }
   }
@@ -286,11 +282,10 @@
       if (!os::protect_memory(_base, _noaccess_prefix, os::MEM_PROT_NONE, _special)) {
         fatal("cannot protect protection page");
       }
-      if (PrintCompressedOopsMode) {
-        tty->cr();
-        tty->print_cr("Protected page at the reserved heap base: "
-                      PTR_FORMAT " / " INTX_FORMAT " bytes", p2i(_base), _noaccess_prefix);
-      }
+      log_debug(gc, heap, coops)("Protected page at the reserved heap base: "
+                                 PTR_FORMAT " / " INTX_FORMAT " bytes",
+                                 p2i(_base),
+                                 _noaccess_prefix);
       assert(Universe::narrow_oop_use_implicit_null_checks() == true, "not initialized?");
     } else {
       Universe::set_narrow_oop_use_implicit_null_checks(false);
@@ -321,10 +316,10 @@
   bool special = large && !os::can_commit_large_page_memory();
   char* base = NULL;
 
-  if (PrintCompressedOopsMode && Verbose) {
-    tty->print("Trying to allocate at address " PTR_FORMAT " heap of size " SIZE_FORMAT_HEX ".\n",
-               p2i(requested_address), size);
-  }
+  log_trace(gc, heap, coops)("Trying to allocate at address " PTR_FORMAT
+                             " heap of size " SIZE_FORMAT_HEX,
+                             p2i(requested_address),
+                             size);
 
   if (special) {
     base = os::reserve_memory_special(size, alignment, requested_address, false);
@@ -343,10 +338,7 @@
     // Failed; try to reserve regular memory below
     if (UseLargePages && (!FLAG_IS_DEFAULT(UseLargePages) ||
                           !FLAG_IS_DEFAULT(LargePageSizeInBytes))) {
-      if (PrintCompressedOopsMode) {
-        tty->cr();
-        tty->print_cr("Reserve regular memory without large pages.");
-      }
+      log_debug(gc, heap, coops)("Reserve regular memory without large pages");
     }
 
     // Optimistically assume that the OSes returns an aligned base pointer.
@@ -558,9 +550,7 @@
 
     // Last, desperate try without any placement.
     if (_base == NULL) {
-      if (PrintCompressedOopsMode && Verbose) {
-        tty->print("Trying to allocate at address NULL heap of size " SIZE_FORMAT_HEX ".\n", size + noaccess_prefix);
-      }
+      log_trace(gc, heap, coops)("Trying to allocate at address NULL heap of size " SIZE_FORMAT_HEX, size + noaccess_prefix);
       initialize(size + noaccess_prefix, alignment, large, NULL, false);
     }
   }

--- a/hotspot/src/share/vm/runtime/arguments.cpp	Thu Apr 07 15:01:56 2016 +0000
+++ b/hotspot/src/share/vm/runtime/arguments.cpp	Thu Apr 07 13:11:15 2016 -0400
@@ -407,7 +407,9 @@
   { NULL, NULL}
 };
 
+// NOTE: A compatibility request will be necessary for each alias to be removed.
 static AliasedLoggingFlag const aliased_logging_flags[] = {
+  { "PrintCompressedOopsMode",   LogLevel::Info,  true,  LOG_TAGS(gc, heap, coops) },
   { "TraceBiasedLocking",        LogLevel::Info,  true,  LOG_TAGS(biasedlocking) },
   { "TraceClassLoading",         LogLevel::Info,  true,  LOG_TAGS(classload) },
   { "TraceClassLoadingPreorder", LogLevel::Debug, true,  LOG_TAGS(classload, preorder) },
@@ -2184,15 +2186,11 @@
       if (!FLAG_IS_DEFAULT(HeapBaseMinAddress)) {
         if (HeapBaseMinAddress < DefaultHeapBaseMinAddress) {
           // matches compressed oops printing flags
-          if (PrintCompressedOopsMode || (PrintMiscellaneous && Verbose)) {
-            jio_fprintf(defaultStream::error_stream(),
-                        "HeapBaseMinAddress must be at least " SIZE_FORMAT
-                        " (" SIZE_FORMAT "G) which is greater than value given "
-                        SIZE_FORMAT "\n",
-                        DefaultHeapBaseMinAddress,
-                        DefaultHeapBaseMinAddress/G,
-                        HeapBaseMinAddress);
-          }
+          log_debug(gc, heap, coops)("HeapBaseMinAddress must be at least " SIZE_FORMAT
+                                     " (" SIZE_FORMAT "G) which is greater than value given " SIZE_FORMAT,
+                                     DefaultHeapBaseMinAddress,
+                                     DefaultHeapBaseMinAddress/G,
+                                     HeapBaseMinAddress);
           FLAG_SET_ERGO(size_t, HeapBaseMinAddress, DefaultHeapBaseMinAddress);
         }
       }

--- a/hotspot/src/share/vm/runtime/globals.hpp	Thu Apr 07 15:01:56 2016 +0000
+++ b/hotspot/src/share/vm/runtime/globals.hpp	Thu Apr 07 13:11:15 2016 -0400
@@ -641,9 +641,6 @@
           "region.")                                                        \
           range(1, max_uintx)                                               \
                                                                             \
-  diagnostic(bool, PrintCompressedOopsMode, false,                          \
-          "Print compressed oops base address and encoding mode")           \
-                                                                            \
   lp64_product(intx, ObjectAlignmentInBytes, 8,                             \
           "Default object alignment in bytes, 8 is minimum")                \
           range(8, 256)                                                     \

--- a/hotspot/test/runtime/CompressedOops/CompressedClassPointers.java	Thu Apr 07 15:01:56 2016 +0000
+++ b/hotspot/test/runtime/CompressedOops/CompressedClassPointers.java	Thu Apr 07 13:11:15 2016 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2016, 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
@@ -85,8 +85,7 @@
     public static void heapBaseMinAddressTest() throws Exception {
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
             "-XX:HeapBaseMinAddress=1m",
-            "-XX:+UnlockDiagnosticVMOptions",
-            "-XX:+PrintCompressedOopsMode",
+            "-Xlog:gc+heap+coops=debug",
             "-version");
         OutputAnalyzer output = new OutputAnalyzer(pb.start());
         output.shouldContain("HeapBaseMinAddress must be at least");

--- a/hotspot/test/runtime/CompressedOops/UseCompressedOops.java	Thu Apr 07 15:01:56 2016 +0000
+++ b/hotspot/test/runtime/CompressedOops/UseCompressedOops.java	Thu Apr 07 13:11:15 2016 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2016, 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
@@ -169,7 +169,6 @@
         ArrayList<String> args = new ArrayList<>();
 
         // Always run with these three:
-        args.add("-XX:+UnlockDiagnosticVMOptions");
         args.add("-XX:+PrintCompressedOopsMode");
         args.add("-Xms32m");
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/logging/CompressedOopsTest.java	Thu Apr 07 13:11:15 2016 -0400
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2016, 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 8149991
+ * @requires (sun.arch.data.model == "64")
+ * @summary -Xlog:gc+heap+coops=info should have output from the code
+ * @library /testlibrary
+ * @modules java.base/sun.misc
+ *          java.management
+ * @build jdk.test.lib.OutputAnalyzer jdk.test.lib.Platform jdk.test.lib.ProcessTools
+ * @run driver CompressedOopsTest
+ */
+
+import jdk.test.lib.OutputAnalyzer;
+import jdk.test.lib.Platform;
+import jdk.test.lib.ProcessTools;
+
+public class CompressedOopsTest {
+    static void analyzeOutputOn(ProcessBuilder pb) throws Exception {
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldContain("[gc,heap,coops] Heap address");
+        output.shouldHaveExitValue(0);
+    }
+
+    static void analyzeOutputOff(ProcessBuilder pb) throws Exception {
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldNotContain("[gc,heap,coops]");
+        output.shouldHaveExitValue(0);
+    }
+
+    public static void main(String[] args) throws Exception {
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseCompressedOops",
+                                                   "-Xlog:gc+heap+coops=info",
+                                                   InnerClass.class.getName());
+        analyzeOutputOn(pb);
+
+        pb = ProcessTools.createJavaProcessBuilder("-XX:+UseCompressedOops",
+                                                   "-XX:+PrintCompressedOopsMode",
+                                                   InnerClass.class.getName());
+        analyzeOutputOn(pb);
+
+        pb = ProcessTools.createJavaProcessBuilder("-XX:+UseCompressedOops",
+                                                   "-XX:+PrintCompressedOopsMode",
+                                                   "-Xlog:gc+heap+coops=off",
+                                                   InnerClass.class.getName());
+        analyzeOutputOff(pb);
+
+        pb = ProcessTools.createJavaProcessBuilder("-XX:+UseCompressedOops",
+                                                   "-Xlog:gc+heap+coops=info",
+                                                   "-XX:-PrintCompressedOopsMode",
+                                                   InnerClass.class.getName());
+        analyzeOutputOff(pb);
+    }
+
+    public static class InnerClass {
+        public static void main(String[] args) throws Exception {
+            System.out.println("Compressed Oops (gc+heap+coops) test");
+        }
+    }
+}