diff --git a/.hgtags-top-repo b/.hgtags-top-repo
index 26a93cd5862..289a8ebab69 100644
--- a/.hgtags-top-repo
+++ b/.hgtags-top-repo
@@ -297,3 +297,4 @@ d1f37d39ff2421f956a6ddf316cf763807bc3363 jdk9-b50
 1822e59f17121b09e7899cf338cfb6e37fe5fceb jdk9-b52
 d6ed47125a76cd1cf8a100568507bfb5e9669d9f jdk9-b53
 cb7367141e910e265b8344a8facee740bd1e5467 jdk9-b54
+0c37a832458f0e0b7d2a3f1a6f69aeae311aeb18 jdk9-b55
diff --git a/common/autoconf/configure.ac b/common/autoconf/configure.ac
index 6cdab79347e..14497a039ad 100644
--- a/common/autoconf/configure.ac
+++ b/common/autoconf/configure.ac
@@ -54,6 +54,7 @@ m4_include([toolchain_windows.m4])
 
 AC_DEFUN_ONCE([CUSTOM_EARLY_HOOK])
 AC_DEFUN_ONCE([CUSTOM_LATE_HOOK])
+AC_DEFUN_ONCE([CUSTOM_CONFIG_OUTPUT_GENERATED_HOOK])
 AC_DEFUN_ONCE([CUSTOM_SUMMARY_AND_WARNINGS_HOOK])
 
 # This line needs to be here, verbatim, after all includes and the dummy hook
@@ -265,6 +266,7 @@ CONFIG_STATUS="$OUTPUT_ROOT/config.status"
 
 # Create the actual output files. Now the main work of configure is done.
 AC_OUTPUT
+CUSTOM_CONFIG_OUTPUT_GENERATED_HOOK
 
 # Try to move the config.log file to the output directory.
 if test -e ./config.log; then
diff --git a/common/autoconf/flags.m4 b/common/autoconf/flags.m4
index 045a7922b2f..84df8837c7e 100644
--- a/common/autoconf/flags.m4
+++ b/common/autoconf/flags.m4
@@ -481,9 +481,8 @@ AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK],
     CFLAGS_JDKLIB_EXTRA="${CFLAGS_JDKLIB_EXTRA} -errtags=yes -errfmt"
     CXXFLAGS_JDKLIB_EXTRA="${CXXFLAGS_JDKLIB_EXTRA} -errtags=yes -errfmt"
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then
-    LDFLAGS_JDK="${LDFLAGS_JDK} -q64 -brtl -bnolibpath -liconv -bexpall"
-    CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
-    CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
+    CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -qfullpath -qsaveopt"
+    CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -qfullpath -qsaveopt"
   fi
 
   if test "x$CFLAGS" != "x${ADDED_CFLAGS}"; then
@@ -762,6 +761,8 @@ AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAGS_FOR_JDK],
   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     LDFLAGS_JDK="$LDFLAGS_JDK -z defs -xildoff -ztext"
     LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK -norunpath -xnolib"
+  elif test "x$TOOLCHAIN_TYPE" = xxlc; then
+    LDFLAGS_JDK="${LDFLAGS_JDK} -brtl -bnolibpath -liconv -bexpall -bernotok"
   fi
 
   # Customize LDFLAGS for executables
diff --git a/common/autoconf/generated-configure.sh b/common/autoconf/generated-configure.sh
index e041c3ee64a..d7648b21e96 100644
--- a/common/autoconf/generated-configure.sh
+++ b/common/autoconf/generated-configure.sh
@@ -4362,13 +4362,14 @@ VS_SDK_PLATFORM_NAME_2013=
 
 
 
+
 # This line needs to be here, verbatim, after all includes and the dummy hook
 # definitions. It is replaced with custom functionality when building
 # custom sources.
 #CUSTOM_AUTOCONF_INCLUDE
 
 # Do not change or remove the following line, it is needed for consistency checks:
-DATE_WHEN_GENERATED=1425994551
+DATE_WHEN_GENERATED=1426774983
 
 ###############################################################################
 #
@@ -41173,7 +41174,7 @@ $as_echo "$as_me: The path of JT_HOME, which resolves as \"$path\", is invalid."
 
 
       # jtreg win32 script works for everybody
-      JTREGEXE="$JT_HOME/win32/bin/jtreg"
+      JTREGEXE="$JT_HOME/bin/jtreg"
 
       if test ! -f "$JTREGEXE"; then
         as_fn_error $? "JTReg executable does not exist: $JTREGEXE" "$LINENO" 5
@@ -42372,9 +42373,8 @@ $as_echo "$ac_cv_c_bigendian" >&6; }
     CFLAGS_JDKLIB_EXTRA="${CFLAGS_JDKLIB_EXTRA} -errtags=yes -errfmt"
     CXXFLAGS_JDKLIB_EXTRA="${CXXFLAGS_JDKLIB_EXTRA} -errtags=yes -errfmt"
   elif test "x$TOOLCHAIN_TYPE" = xxlc; then
-    LDFLAGS_JDK="${LDFLAGS_JDK} -q64 -brtl -bnolibpath -liconv -bexpall"
-    CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
-    CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
+    CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -qfullpath -qsaveopt"
+    CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -qfullpath -qsaveopt"
   fi
 
   if test "x$CFLAGS" != "x${ADDED_CFLAGS}"; then
@@ -42668,6 +42668,8 @@ fi
   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     LDFLAGS_JDK="$LDFLAGS_JDK -z defs -xildoff -ztext"
     LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK -norunpath -xnolib"
+  elif test "x$TOOLCHAIN_TYPE" = xxlc; then
+    LDFLAGS_JDK="${LDFLAGS_JDK} -brtl -bnolibpath -liconv -bexpall -bernotok"
   fi
 
   # Customize LDFLAGS for executables
@@ -52969,6 +52971,7 @@ $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
 fi
 
 
+
 # Try to move the config.log file to the output directory.
 if test -e ./config.log; then
   $MV -f ./config.log "$OUTPUT_ROOT/config.log" 2> /dev/null
diff --git a/common/autoconf/toolchain.m4 b/common/autoconf/toolchain.m4
index 1de284e285e..7737ef8adf2 100644
--- a/common/autoconf/toolchain.m4
+++ b/common/autoconf/toolchain.m4
@@ -763,7 +763,7 @@ AC_DEFUN_ONCE([TOOLCHAIN_SETUP_JTREG],
       BASIC_FIXUP_PATH([JT_HOME])
 
       # jtreg win32 script works for everybody
-      JTREGEXE="$JT_HOME/win32/bin/jtreg"
+      JTREGEXE="$JT_HOME/bin/jtreg"
 
       if test ! -f "$JTREGEXE"; then
         AC_MSG_ERROR([JTReg executable does not exist: $JTREGEXE])
diff --git a/make/CompileJavaModules.gmk b/make/CompileJavaModules.gmk
index 23188129d3b..066802688e7 100644
--- a/make/CompileJavaModules.gmk
+++ b/make/CompileJavaModules.gmk
@@ -90,12 +90,16 @@ endif
 
 ################################################################################
 
+java.compiler_ADD_JAVAC_FLAGS := -Xdoclint:all/protected,-reference '-Xdoclint/package:java.*,javax.*'
+
+################################################################################
+
 java.datatransfer_ADD_JAVAC_FLAGS := -Xdoclint:all/protected,-reference '-Xdoclint/package:java.*,javax.*'
 java.datatransfer_COPY := flavormap.properties
 
 ################################################################################
 
-java.desktop_ADD_JAVAC_FLAGS := -Xdoclint:all/protected,-missing,-reference '-Xdoclint/package:java.*,javax.*' 
+java.desktop_ADD_JAVAC_FLAGS := -Xdoclint:all/protected,-missing,-reference '-Xdoclint/package:java.*,javax.*'
 java.desktop_COPY := .gif .png .wav .txt .xml .css .pf
 java.desktop_CLEAN := iio-plugin.properties cursors.properties
 
@@ -336,6 +340,7 @@ jdk.charsets_COPY := .dat
 
 ################################################################################
 
+jdk.compiler_ADD_JAVAC_FLAGS := -Xdoclint:all/protected '-Xdoclint/package:-com.sun.tools.*'
 jdk.compiler_COPY := javax.tools.JavaCompilerTool
 jdk.compiler_CLEAN_FILES := $(wildcard \
     $(patsubst %, $(JDK_TOPDIR)/src/jdk.compiler/share/classes/%/*.properties, \
diff --git a/make/Images.gmk b/make/Images.gmk
index 6fe4f766d36..3a8171416c7 100644
--- a/make/Images.gmk
+++ b/make/Images.gmk
@@ -494,29 +494,16 @@ ifeq ($(GCOV_ENABLED), true)
 
   GCOV_FIND_EXPR := -type f -name "*.gcno"
 
-  ifeq ($(JVM_VARIANT_CLIENT), true)
-    $(eval $(call SetupCopyFiles,COPY_HOTSPOT_CLIENT_GCOV_GCNO, \
-        SRC := $(HOTSPOT_OUTPUTDIR), \
-        DEST := $(SYMBOLS_IMAGE_DIR)/gcov/hotspot/client, \
-        FILES := $(shell $(FIND) $(HOTSPOT_OUTPUTDIR)/*compiler1/ $(GCOV_FIND_EXPR)), \
-        FLATTEN := true))
+  $(eval $(call SetupCopyFiles,COPY_HOTSPOT_GCOV_GCNO, \
+      SRC := $(OUTPUT_ROOT), \
+      DEST := $(SYMBOLS_IMAGE_DIR)/gcov, \
+      FILES := $(shell $(FIND) $(HOTSPOT_OUTPUTDIR) $(GCOV_FIND_EXPR))))
 
-    SYMBOLS_TARGETS += $(COPY_HOTSPOT_CLIENT_GCOV_GCNO)
-  endif
-
-  ifeq ($(JVM_VARIANT_SERVER), true)
-    $(eval $(call SetupCopyFiles,COPY_HOTSPOT_SERVER_GCOV_GCNO, \
-        SRC := $(HOTSPOT_OUTPUTDIR), \
-        DEST := $(SYMBOLS_IMAGE_DIR)/gcov/hotspot/server, \
-        FILES := $(shell $(FIND) $(HOTSPOT_OUTPUTDIR)/*compiler2/ $(GCOV_FIND_EXPR)), \
-        FLATTEN := true))
-
-    SYMBOLS_TARGETS += $(COPY_HOTSPOT_SERVER_GCOV_GCNO)
-  endif
+  SYMBOLS_TARGETS += $(COPY_HOTSPOT_GCOV_GCNO)
 
   $(eval $(call SetupCopyFiles,COPY_JDK_GCOV_GCNO, \
-      SRC := $(SUPPORT_OUTPUTDIR)/native, \
-      DEST := $(SYMBOLS_IMAGE_DIR)/gcov/jdk, \
+      SRC := $(OUTPUT_ROOT), \
+      DEST := $(SYMBOLS_IMAGE_DIR)/gcov, \
       FILES := $(shell $(FIND) $(SUPPORT_OUTPUTDIR)/native $(GCOV_FIND_EXPR))))
 
   SYMBOLS_TARGETS += $(COPY_JDK_GCOV_GCNO)
diff --git a/make/common/JavaCompilation.gmk b/make/common/JavaCompilation.gmk
index 0de9c74f14b..c08d1da62a3 100644
--- a/make/common/JavaCompilation.gmk
+++ b/make/common/JavaCompilation.gmk
@@ -369,7 +369,7 @@ define add_file_to_clean
 	$(MKDIR) -p $$(@D)
 	export LC_ALL=C ; ( $(CAT) $$< && $(ECHO) "" ) \
 	    | $(SED) -e 's/\([^\\]\):/\1\\:/g' -e 's/\([^\\]\)=/\1\\=/g' \
-	        -e 's/\([^\\]\)!/\1\\!/g' -e 's/#.*/#/g' \
+	        -e 's/\([^\\]\)!/\1\\!/g' -e 's/^[ 	]*#.*/#/g' \
 	    | $(SED) -f "$(SRC_ROOT)/make/common/support/unicode2x.sed" \
 	    | $(SED) -e '/^#/d' -e '/^$$$$/d' \
 	        -e :a -e '/\\$$$$/N; s/\\\n//; ta' \
diff --git a/make/common/NativeCompilation.gmk b/make/common/NativeCompilation.gmk
index 17dca95b7fe..001812585c2 100644
--- a/make/common/NativeCompilation.gmk
+++ b/make/common/NativeCompilation.gmk
@@ -60,7 +60,7 @@ WINDOWS_SHOWINCLUDE_SED_PATTERN := \
     -e 's|Note: including file: *||' \
     -e 's|\\|/|g' \
     -e 's|^\([a-zA-Z]\):|$(UNIX_PATH_PREFIX)/\1|g' \
-    -e '/$(subst /,\/,$(TOPDIR))/!d' \
+    -e '\|$(TOPDIR)|I !d' \
     -e 's|$$$$| \\|g' \
     #
 
@@ -153,7 +153,7 @@ define add_native_source
 	      exit `cat $$($1_$2_DEP).exitvalue`
 	  $(RM) $$($1_$2_DEP).exitvalue
 	  ($(ECHO) $$@: \\ \
-	  && $(SED) $(WINDOWS_SHOWINCLUDE_SED_PATTERN) $$($1_$2_DEP).raw) > $$($1_$2_DEP)
+	  && $(SED) $(WINDOWS_SHOWINCLUDE_SED_PATTERN) $$($1_$2_DEP).raw) | $(SORT) -u > $$($1_$2_DEP)
         endif
         # Create a dependency target file from the dependency file.
         # Solution suggested by http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/
@@ -392,12 +392,6 @@ define SetupNativeCompilationBody
     $1_EXTRA_CXXFLAGS+=$$($1_CXXFLAGS_$(OPENJDK_TARGET_OS)_release)
   endif
 
-  # Pick up disabled warnings, if possible on this platform.
-  ifneq ($(DISABLE_WARNING_PREFIX),)
-    $1_EXTRA_CFLAGS += $$(addprefix $(DISABLE_WARNING_PREFIX), $$($1_DISABLED_WARNINGS_$(TOOLCHAIN_TYPE)))
-    $1_EXTRA_CXXFLAGS += $$(addprefix $(DISABLE_WARNING_PREFIX), $$($1_DISABLED_WARNINGS_$(TOOLCHAIN_TYPE)))
-  endif
-
   ifeq ($$($1_DEBUG_SYMBOLS), true)
     ifeq ($(ENABLE_DEBUG_SYMBOLS), true)
       ifdef OPENJDK
@@ -415,6 +409,9 @@ define SetupNativeCompilationBody
     endif
   endif
 
+  # If no C++ flags are explicitly set, default to using the C flags.
+  # After that, we can set additional C++ flags that should not interfere
+  # with the mechanism for copying the C flags by default.
   ifeq ($$($1_CXXFLAGS),)
     $1_CXXFLAGS:=$$($1_CFLAGS)
   endif
@@ -427,6 +424,12 @@ define SetupNativeCompilationBody
     $1_EXTRA_CXXFLAGS += $$(CXX_FLAG_REORDER)
   endif
 
+  # Pick up disabled warnings, if possible on this platform.
+  ifneq ($(DISABLE_WARNING_PREFIX),)
+    $1_EXTRA_CFLAGS += $$(addprefix $(DISABLE_WARNING_PREFIX), $$($1_DISABLED_WARNINGS_$(TOOLCHAIN_TYPE)))
+    $1_EXTRA_CXXFLAGS += $$(addprefix $(DISABLE_WARNING_PREFIX), $$($1_DISABLED_WARNINGS_$(TOOLCHAIN_TYPE)))
+  endif
+
   ifeq (NONE, $$($1_OPTIMIZATION))
     $1_EXTRA_CFLAGS += $(C_O_FLAG_NONE)
     $1_EXTRA_CXXFLAGS += $(CXX_O_FLAG_NONE)
diff --git a/test/lib/sun/hotspot/WhiteBox.java b/test/lib/sun/hotspot/WhiteBox.java
index b19845392ff..fb95cc4a106 100644
--- a/test/lib/sun/hotspot/WhiteBox.java
+++ b/test/lib/sun/hotspot/WhiteBox.java
@@ -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
@@ -27,6 +27,7 @@ package sun.hotspot;
 import java.lang.reflect.Executable;
 import java.util.Arrays;
 import java.util.List;
+import java.util.function.BiFunction;
 import java.util.function.Function;
 import java.util.stream.Stream;
 import java.security.BasicPermission;
@@ -250,6 +251,23 @@ public class WhiteBox {
     }
     return offset;
   }
+  public native Boolean getMethodBooleanOption(Executable method, String name);
+  public native Long    getMethodIntxOption(Executable method, String name);
+  public native Long    getMethodUintxOption(Executable method, String name);
+  public native Double  getMethodDoubleOption(Executable method, String name);
+  public native String  getMethodStringOption(Executable method, String name);
+  private final List<BiFunction<Executable,String,Object>> methodOptionGetters
+      = Arrays.asList(this::getMethodBooleanOption, this::getMethodIntxOption,
+          this::getMethodUintxOption, this::getMethodDoubleOption,
+          this::getMethodStringOption);
+
+  public Object getMethodOption(Executable method, String name) {
+    return methodOptionGetters.stream()
+                              .map(f -> f.apply(method, name))
+                              .filter(x -> x != null)
+                              .findAny()
+                              .orElse(null);
+  }
 
   // Safepoint Checking
   public native void assertMatchingSafepointCalls(boolean mutexSafepointValue, boolean attemptedNoSafepointValue);