# HG changeset patch
# User lana
# Date 1474569140 0
# Node ID b4b4c1119f39f3c2bbb3eeacf5e8a6e3ea61d61d
# Parent  4f1591515aef46a9b4788c0927f95154bd6f3d01# Parent  20cec2b18e9a971f0e0ced3f1ace9594d895f6c1
Merge

diff -r 4f1591515aef -r b4b4c1119f39 hotspot/make/test/JtregNative.gmk
--- a/hotspot/make/test/JtregNative.gmk	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/make/test/JtregNative.gmk	Thu Sep 22 18:32:20 2016 +0000
@@ -44,6 +44,7 @@
     $(HOTSPOT_TOPDIR)/test/native_sanity \
     $(HOTSPOT_TOPDIR)/test/runtime/jni/8025979 \
     $(HOTSPOT_TOPDIR)/test/runtime/jni/8033445 \
+    $(HOTSPOT_TOPDIR)/test/runtime/jni/checked \
     $(HOTSPOT_TOPDIR)/test/runtime/jni/ToStringInInterfaceTest \
     $(HOTSPOT_TOPDIR)/test/runtime/modules/getModuleJNI \
     $(HOTSPOT_TOPDIR)/test/runtime/SameObject \
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/aarch64/vm/interp_masm_aarch64.cpp
--- a/hotspot/src/cpu/aarch64/vm/interp_masm_aarch64.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/aarch64/vm/interp_masm_aarch64.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -326,7 +326,8 @@
 }
 
 void InterpreterMacroAssembler::push_l(Register r) {
-  str(r, pre(esp, 2 * -wordSize));
+  str(zr, pre(esp, -wordSize));
+  str(r, pre(esp, -wordsize));
 }
 
 void InterpreterMacroAssembler::pop_f(FloatRegister r) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/aarch64/vm/sharedRuntime_aarch64.cpp
--- a/hotspot/src/cpu/aarch64/vm/sharedRuntime_aarch64.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/aarch64/vm/sharedRuntime_aarch64.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -2041,6 +2041,11 @@
       __ verify_oop(r0);
   }
 
+  if (CheckJNICalls) {
+    // clear_pending_jni_exception_check
+    __ str(zr, Address(rthread, JavaThread::pending_jni_exception_check_fn_offset()));
+  }
+
   if (!is_critical_native) {
     // reset handle block
     __ ldr(r2, Address(rthread, JavaThread::active_handles_offset()));
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/aarch64/vm/templateInterpreterGenerator_aarch64.cpp
--- a/hotspot/src/cpu/aarch64/vm/templateInterpreterGenerator_aarch64.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/aarch64/vm/templateInterpreterGenerator_aarch64.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1355,6 +1355,11 @@
   // reset_last_Java_frame
   __ reset_last_Java_frame(true);
 
+  if (CheckJNICalls) {
+    // clear_pending_jni_exception_check
+    __ str(zr, Address(rthread, JavaThread::pending_jni_exception_check_fn_offset()));
+  }
+
   // reset handle block
   __ ldr(t, Address(rthread, JavaThread::active_handles_offset()));
   __ str(zr, Address(t, JNIHandleBlock::top_offset_in_bytes()));
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/sparc/vm/globals_sparc.hpp
--- a/hotspot/src/cpu/sparc/vm/globals_sparc.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/sparc/vm/globals_sparc.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -57,10 +57,12 @@
 
 #ifdef _LP64
 // Stack slots are 2X larger in LP64 than in the 32 bit VM.
+define_pd_global(intx, CompilerThreadStackSize, 1024);
 define_pd_global(intx, ThreadStackSize,       1024);
 define_pd_global(intx, VMThreadStackSize,     1024);
 #define DEFAULT_STACK_SHADOW_PAGES (20 DEBUG_ONLY(+2))
 #else
+define_pd_global(intx, CompilerThreadStackSize, 512);
 define_pd_global(intx, ThreadStackSize,       512);
 define_pd_global(intx, VMThreadStackSize,     512);
 #define DEFAULT_STACK_SHADOW_PAGES (6 DEBUG_ONLY(+2))
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/sparc/vm/interp_masm_sparc.cpp
--- a/hotspot/src/cpu/sparc/vm/interp_masm_sparc.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/sparc/vm/interp_masm_sparc.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -359,7 +359,7 @@
 #ifdef _LP64
   stx(l, r1, offset);
   // store something more useful here
-  debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);)
+  stx(G0, r1, offset+Interpreter::stackElementSize);
 #else
   st(l, r1, offset);
   st(l->successor(), r1, offset + Interpreter::stackElementSize);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp
--- a/hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -2765,6 +2765,11 @@
       __ verify_oop(I0);
   }
 
+  if (CheckJNICalls) {
+    // clear_pending_jni_exception_check
+    __ st_ptr(G0, G2_thread, JavaThread::pending_jni_exception_check_fn_offset());
+  }
+
   if (!is_critical_native) {
     // reset handle block
     __ ld_ptr(G2_thread, in_bytes(JavaThread::active_handles_offset()), L5);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/sparc/vm/sparc.ad
--- a/hotspot/src/cpu/sparc/vm/sparc.ad	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/sparc/vm/sparc.ad	Thu Sep 22 18:32:20 2016 +0000
@@ -2921,6 +2921,26 @@
     __ cmp( Rold, O7 );
   %}
 
+  // raw int cas without using tmp register for compareAndExchange
+  enc_class enc_casi_exch( iRegP mem, iRegL old, iRegL new) %{
+    Register Rmem = reg_to_register_object($mem$$reg);
+    Register Rold = reg_to_register_object($old$$reg);
+    Register Rnew = reg_to_register_object($new$$reg);
+
+    MacroAssembler _masm(&cbuf);
+    __ cas(Rmem, Rold, Rnew);
+  %}
+
+  // 64-bit cas without using tmp register for compareAndExchange
+  enc_class enc_casx_exch( iRegP mem, iRegL old, iRegL new) %{
+    Register Rmem = reg_to_register_object($mem$$reg);
+    Register Rold = reg_to_register_object($old$$reg);
+    Register Rnew = reg_to_register_object($new$$reg);
+
+    MacroAssembler _masm(&cbuf);
+    __ casx(Rmem, Rold, Rnew);
+  %}
+
   enc_class enc_lflags_ne_to_boolean( iRegI res ) %{
     Register Rres = reg_to_register_object($res$$reg);
 
@@ -7105,6 +7125,7 @@
 instruct compareAndSwapL_bool(iRegP mem_ptr, iRegL oldval, iRegL newval, iRegI res, o7RegI tmp1, flagsReg ccr ) %{
   predicate(VM_Version::supports_cx8());
   match(Set res (CompareAndSwapL mem_ptr (Binary oldval newval)));
+  match(Set res (WeakCompareAndSwapL mem_ptr (Binary oldval newval)));
   effect( USE mem_ptr, KILL ccr, KILL tmp1);
   format %{
             "MOV    $newval,O7\n\t"
@@ -7121,6 +7142,7 @@
 
 instruct compareAndSwapI_bool(iRegP mem_ptr, iRegI oldval, iRegI newval, iRegI res, o7RegI tmp1, flagsReg ccr ) %{
   match(Set res (CompareAndSwapI mem_ptr (Binary oldval newval)));
+  match(Set res (WeakCompareAndSwapI mem_ptr (Binary oldval newval)));
   effect( USE mem_ptr, KILL ccr, KILL tmp1);
   format %{
             "MOV    $newval,O7\n\t"
@@ -7139,6 +7161,7 @@
   predicate(VM_Version::supports_cx8());
 #endif
   match(Set res (CompareAndSwapP mem_ptr (Binary oldval newval)));
+  match(Set res (WeakCompareAndSwapP mem_ptr (Binary oldval newval)));
   effect( USE mem_ptr, KILL ccr, KILL tmp1);
   format %{
             "MOV    $newval,O7\n\t"
@@ -7159,6 +7182,7 @@
 
 instruct compareAndSwapN_bool(iRegP mem_ptr, iRegN oldval, iRegN newval, iRegI res, o7RegI tmp1, flagsReg ccr ) %{
   match(Set res (CompareAndSwapN mem_ptr (Binary oldval newval)));
+  match(Set res (WeakCompareAndSwapN mem_ptr (Binary oldval newval)));
   effect( USE mem_ptr, KILL ccr, KILL tmp1);
   format %{
             "MOV    $newval,O7\n\t"
@@ -7172,6 +7196,54 @@
   ins_pipe( long_memory_op );
 %}
 
+instruct compareAndExchangeI(iRegP mem_ptr, iRegI oldval, iRegI newval)
+%{
+  match(Set newval (CompareAndExchangeI mem_ptr (Binary oldval newval)));
+  effect( USE mem_ptr );
+
+  format %{
+            "CASA   [$mem_ptr],$oldval,$newval\t! If $oldval==[$mem_ptr] Then store $newval into [$mem_ptr] and set $newval=[$mem_ptr]\n\t"
+  %}
+  ins_encode( enc_casi_exch(mem_ptr, oldval, newval) );
+  ins_pipe( long_memory_op );
+%}
+
+instruct compareAndExchangeL(iRegP mem_ptr, iRegL oldval, iRegL newval)
+%{
+  match(Set newval (CompareAndExchangeL mem_ptr (Binary oldval newval)));
+  effect( USE mem_ptr );
+
+  format %{
+            "CASXA  [$mem_ptr],$oldval,$newval\t! If $oldval==[$mem_ptr] Then store $newval into [$mem_ptr] and set $newval=[$mem_ptr]\n\t"
+  %}
+  ins_encode( enc_casx_exch(mem_ptr, oldval, newval) );
+  ins_pipe( long_memory_op );
+%}
+
+instruct compareAndExchangeP(iRegP mem_ptr, iRegP oldval, iRegP newval)
+%{
+  match(Set newval (CompareAndExchangeP mem_ptr (Binary oldval newval)));
+  effect( USE mem_ptr );
+
+  format %{
+            "CASXA  [$mem_ptr],$oldval,$newval\t! If $oldval==[$mem_ptr] Then store $newval into [$mem_ptr] and set $newval=[$mem_ptr]\n\t"
+  %}
+  ins_encode( enc_casx_exch(mem_ptr, oldval, newval) );
+  ins_pipe( long_memory_op );
+%}
+
+instruct compareAndExchangeN(iRegP mem_ptr, iRegN oldval, iRegN newval)
+%{
+  match(Set newval (CompareAndExchangeN mem_ptr (Binary oldval newval)));
+  effect( USE mem_ptr );
+
+  format %{
+            "CASA   [$mem_ptr],$oldval,$newval\t! If $oldval==[$mem_ptr] Then store $newval into [$mem_ptr] and set $newval=[$mem_ptr]\n\t"
+  %}
+  ins_encode( enc_casi_exch(mem_ptr, oldval, newval) );
+  ins_pipe( long_memory_op );
+%}
+
 instruct xchgI( memory mem, iRegI newval) %{
   match(Set newval (GetAndSetI mem newval));
   format %{ "SWAP  [$mem],$newval" %}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/sparc/vm/templateInterpreterGenerator_sparc.cpp
--- a/hotspot/src/cpu/sparc/vm/templateInterpreterGenerator_sparc.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/sparc/vm/templateInterpreterGenerator_sparc.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1487,6 +1487,11 @@
   __ set(_thread_in_Java, G3_scratch);
   __ st(G3_scratch, thread_state);
 
+  if (CheckJNICalls) {
+    // clear_pending_jni_exception_check
+    __ st_ptr(G0, G2_thread, JavaThread::pending_jni_exception_check_fn_offset());
+  }
+
   // reset handle block
   __ ld_ptr(G2_thread, JavaThread::active_handles_offset(), G3_scratch);
   __ st(G0, G3_scratch, JNIHandleBlock::top_offset_in_bytes());
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/x86/vm/interp_masm_x86.cpp
--- a/hotspot/src/cpu/x86/vm/interp_masm_x86.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -611,7 +611,8 @@
 
 void InterpreterMacroAssembler::push_l(Register r) {
   subptr(rsp, 2 * wordSize);
-  movq(Address(rsp, 0), r);
+  movptr(Address(rsp, Interpreter::expr_offset_in_bytes(0)), r         );
+  movptr(Address(rsp, Interpreter::expr_offset_in_bytes(1)), NULL_WORD );
 }
 
 void InterpreterMacroAssembler::pop(TosState state) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp
--- a/hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -8131,8 +8131,7 @@
     jmp(FALSE_LABEL);
 
     clear_vector_masking();   // closing of the stub context for programming mask registers
-  }
-  else {
+  } else {
     movl(result, len); // copy
 
     if (UseAVX == 2 && UseSSE >= 2) {
@@ -8169,8 +8168,7 @@
       bind(COMPARE_TAIL); // len is zero
       movl(len, result);
       // Fallthru to tail compare
-    }
-    else if (UseSSE42Intrinsics) {
+    } else if (UseSSE42Intrinsics) {
       // With SSE4.2, use double quad vector compare
       Label COMPARE_WIDE_VECTORS, COMPARE_TAIL;
 
@@ -10748,7 +10746,10 @@
   // save length for return
   push(len);
 
+  // 8165287: EVEX version disabled for now, needs to be refactored as
+  // it is returning incorrect results.
   if ((UseAVX > 2) && // AVX512
+    0 &&
     VM_Version::supports_avx512vlbw() &&
     VM_Version::supports_bmi2()) {
 
@@ -11067,10 +11068,11 @@
 
       bind(below_threshold);
       bind(copy_new_tail);
-      if (UseAVX > 2) {
+      if ((UseAVX > 2) &&
+        VM_Version::supports_avx512vlbw() &&
+        VM_Version::supports_bmi2()) {
         movl(tmp2, len);
-      }
-      else {
+      } else {
         movl(len, tmp2);
       }
       andl(tmp2, 0x00000007);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/x86/vm/sharedRuntime_x86_32.cpp
--- a/hotspot/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/x86/vm/sharedRuntime_x86_32.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -2236,6 +2236,11 @@
       __ verify_oop(rax);
   }
 
+  if (CheckJNICalls) {
+    // clear_pending_jni_exception_check
+    __ movptr(Address(thread, JavaThread::pending_jni_exception_check_fn_offset()), NULL_WORD);
+  }
+
   if (!is_critical_native) {
     // reset handle block
     __ movptr(rcx, Address(thread, JavaThread::active_handles_offset()));
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/x86/vm/sharedRuntime_x86_64.cpp
--- a/hotspot/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -2589,6 +2589,11 @@
       __ verify_oop(rax);
   }
 
+  if (CheckJNICalls) {
+    // clear_pending_jni_exception_check
+    __ movptr(Address(r15_thread, JavaThread::pending_jni_exception_check_fn_offset()), NULL_WORD);
+  }
+
   if (!is_critical_native) {
     // reset handle block
     __ movptr(rcx, Address(r15_thread, JavaThread::active_handles_offset()));
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/cpu/x86/vm/templateInterpreterGenerator_x86.cpp
--- a/hotspot/src/cpu/x86/vm/templateInterpreterGenerator_x86.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/cpu/x86/vm/templateInterpreterGenerator_x86.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1169,6 +1169,11 @@
   // reset_last_Java_frame
   __ reset_last_Java_frame(thread, true);
 
+  if (CheckJNICalls) {
+    // clear_pending_jni_exception_check
+    __ movptr(Address(thread, JavaThread::pending_jni_exception_check_fn_offset()), NULL_WORD);
+  }
+
   // reset handle block
   __ movptr(t, Address(thread, JavaThread::active_handles_offset()));
   __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/GrowableArray.java
--- a/hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/GrowableArray.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/GrowableArray.java	Thu Sep 22 18:32:20 2016 +0000
@@ -65,4 +65,7 @@
     super(addr);
     virtualConstructor = v;
   }
+  public Address getData() {
+    return dataField.getValue(getAddress());
+  }
 }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java
--- a/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/CompilerToVM.java	Thu Sep 22 18:32:20 2016 +0000
@@ -366,8 +366,8 @@
      * {@code exactReceiver}.
      *
      * @param caller the caller or context type used to perform access checks
-     * @return the link-time resolved method (might be abstract) or {@code 0} if it can not be
-     *         linked
+     * @return the link-time resolved method (might be abstract) or {@code null} if it is either a
+     *         signature polymorphic method or can not be linked.
      */
     native HotSpotResolvedJavaMethodImpl resolveMethod(HotSpotResolvedObjectTypeImpl exactReceiver, HotSpotResolvedJavaMethodImpl method, HotSpotResolvedObjectTypeImpl caller);
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotConstantPool.java
--- a/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotConstantPool.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotConstantPool.java	Thu Sep 22 18:32:20 2016 +0000
@@ -722,7 +722,7 @@
     /**
      * Determines if {@code type} contains signature polymorphic methods.
      */
-    private static boolean isSignaturePolymorphicHolder(final HotSpotResolvedObjectTypeImpl type) {
+    static boolean isSignaturePolymorphicHolder(final ResolvedJavaType type) {
         String name = type.getName();
         if (signaturePolymorphicHolders == null) {
             signaturePolymorphicHolders = compilerToVM().getSignaturePolymorphicHolders();
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl.java
--- a/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl.java	Thu Sep 22 18:32:20 2016 +0000
@@ -24,6 +24,7 @@
 
 import static java.util.Objects.requireNonNull;
 import static jdk.vm.ci.hotspot.CompilerToVM.compilerToVM;
+import static jdk.vm.ci.hotspot.HotSpotConstantPool.isSignaturePolymorphicHolder;
 import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntime.runtime;
 import static jdk.vm.ci.hotspot.HotSpotVMConfig.config;
 import static jdk.vm.ci.hotspot.UnsafeAccess.UNSAFE;
@@ -426,7 +427,7 @@
             // Methods can only be resolved against concrete types
             return null;
         }
-        if (method.isConcrete() && method.getDeclaringClass().equals(this) && method.isPublic()) {
+        if (method.isConcrete() && method.getDeclaringClass().equals(this) && method.isPublic() && !isSignaturePolymorphicHolder(method.getDeclaringClass())) {
             return method;
         }
         if (!method.getDeclaringClass().isAssignableFrom(this)) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java
--- a/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/jdk.vm.ci/share/classes/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ResolvedJavaType.java	Thu Sep 22 18:32:20 2016 +0000
@@ -209,8 +209,8 @@
      *
      * @param method the method to select the implementation of
      * @param callerType the caller or context type used to perform access checks
-     * @return the method that would be selected at runtime (might be abstract) or {@code null} if
-     *         it can not be resolved
+     * @return the link-time resolved method (might be abstract) or {@code null} if it is either a
+     *         signature polymorphic method or can not be linked.
      */
     ResolvedJavaMethod resolveMethod(ResolvedJavaMethod method, ResolvedJavaType callerType);
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/aix/vm/os_aix.cpp
--- a/hotspot/src/os/aix/vm/os_aix.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/aix/vm/os_aix.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -847,7 +847,8 @@
   return 0;
 }
 
-bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
+bool os::create_thread(Thread* thread, ThreadType thr_type,
+                       size_t req_stack_size) {
 
   assert(thread->osthread() == NULL, "caller responsible");
 
@@ -880,37 +881,12 @@
   guarantee(pthread_attr_setsuspendstate_np(&attr, PTHREAD_CREATE_SUSPENDED_NP) == 0, "???");
 
   // calculate stack size if it's not specified by caller
-  if (stack_size == 0) {
-    stack_size = os::Aix::default_stack_size(thr_type);
-
-    switch (thr_type) {
-    case os::java_thread:
-      // Java threads use ThreadStackSize whose default value can be changed with the flag -Xss.
-      assert(JavaThread::stack_size_at_create() > 0, "this should be set");
-      stack_size = JavaThread::stack_size_at_create();
-      break;
-    case os::compiler_thread:
-      if (CompilerThreadStackSize > 0) {
-        stack_size = (size_t)(CompilerThreadStackSize * K);
-        break;
-      } // else fall through:
-        // use VMThreadStackSize if CompilerThreadStackSize is not defined
-    case os::vm_thread:
-    case os::pgc_thread:
-    case os::cgc_thread:
-    case os::watcher_thread:
-      if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
-      break;
-    }
-  }
-
-  stack_size = MAX2(stack_size, os::Aix::min_stack_allowed);
+  size_t stack_size = os::Posix::get_initial_stack_size(thr_type, req_stack_size);
   pthread_attr_setstacksize(&attr, stack_size);
 
   pthread_t tid;
   int ret = pthread_create(&tid, &attr, (void* (*)(void*)) thread_native_entry, thread);
 
-
   char buf[64];
   if (ret == 0) {
     log_info(os, thread)("Thread started (pthread id: " UINTX_FORMAT ", attributes: %s). ",
@@ -3593,32 +3569,11 @@
   Aix::signal_sets_init();
   Aix::install_signal_handlers();
 
-  // Check minimum allowable stack size for thread creation and to initialize
-  // the java system classes, including StackOverflowError - depends on page
-  // size. Add two 4K pages for compiler2 recursion in main thread.
-  // Add in 4*BytesPerWord 4K pages to account for VM stack during
-  // class initialization depending on 32 or 64 bit VM.
-  os::Aix::min_stack_allowed = MAX2(os::Aix::min_stack_allowed,
-                                    JavaThread::stack_guard_zone_size() +
-                                    JavaThread::stack_shadow_zone_size() +
-                                    (4*BytesPerWord COMPILER2_PRESENT(+2)) * 4 * K);
-
-  os::Aix::min_stack_allowed = align_size_up(os::Aix::min_stack_allowed, os::vm_page_size());
-
-  size_t threadStackSizeInBytes = ThreadStackSize * K;
-  if (threadStackSizeInBytes != 0 &&
-      threadStackSizeInBytes < os::Aix::min_stack_allowed) {
-    tty->print_cr("\nThe stack size specified is too small, "
-                  "Specify at least %dk",
-                  os::Aix::min_stack_allowed / K);
+  // Check and sets minimum stack sizes against command line options
+  if (Posix::set_minimum_stack_sizes() == JNI_ERR) {
     return JNI_ERR;
   }
 
-  // Make the stack size a multiple of the page size so that
-  // the yellow/red zones can be guarded.
-  // Note that this can be 0, if no default stacksize was set.
-  JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, vm_page_size()));
-
   if (UseNUMA) {
     UseNUMA = false;
     warning("NUMA optimizations are not available on this OS.");
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/aix/vm/os_aix.hpp
--- a/hotspot/src/os/aix/vm/os_aix.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/aix/vm/os_aix.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2013, 2016 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -140,14 +140,6 @@
   // libpthread version string
   static void libpthread_init();
 
-  // Minimum stack size a thread can be created with (allowing
-  // the VM to completely create the thread and enter user code)
-  static size_t min_stack_allowed;
-
-  // Return default stack size or guard size for the specified thread type
-  static size_t default_stack_size(os::ThreadType thr_type);
-  static size_t default_guard_size(os::ThreadType thr_type);
-
   // Function returns true if we run on OS/400 (pase), false if we run
   // on AIX.
   static bool on_pase() {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/bsd/vm/os_bsd.cpp
--- a/hotspot/src/os/bsd/vm/os_bsd.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/bsd/vm/os_bsd.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -734,7 +734,8 @@
   return 0;
 }
 
-bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
+bool os::create_thread(Thread* thread, ThreadType thr_type,
+                       size_t req_stack_size) {
   assert(thread->osthread() == NULL, "caller responsible");
 
   // Allocate the OSThread object
@@ -757,32 +758,7 @@
   pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 
   // calculate stack size if it's not specified by caller
-  if (stack_size == 0) {
-    stack_size = os::Bsd::default_stack_size(thr_type);
-
-    switch (thr_type) {
-    case os::java_thread:
-      // Java threads use ThreadStackSize which default value can be
-      // changed with the flag -Xss
-      assert(JavaThread::stack_size_at_create() > 0, "this should be set");
-      stack_size = JavaThread::stack_size_at_create();
-      break;
-    case os::compiler_thread:
-      if (CompilerThreadStackSize > 0) {
-        stack_size = (size_t)(CompilerThreadStackSize * K);
-        break;
-      } // else fall through:
-        // use VMThreadStackSize if CompilerThreadStackSize is not defined
-    case os::vm_thread:
-    case os::pgc_thread:
-    case os::cgc_thread:
-    case os::watcher_thread:
-      if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
-      break;
-    }
-  }
-
-  stack_size = MAX2(stack_size, os::Bsd::min_stack_allowed);
+  size_t stack_size = os::Posix::get_initial_stack_size(thr_type, req_stack_size);
   pthread_attr_setstacksize(&attr, stack_size);
 
   ThreadState state;
@@ -3502,32 +3478,11 @@
   Bsd::signal_sets_init();
   Bsd::install_signal_handlers();
 
-  // Check minimum allowable stack size for thread creation and to initialize
-  // the java system classes, including StackOverflowError - depends on page
-  // size.  Add two 4K pages for compiler2 recursion in main thread.
-  // Add in 4*BytesPerWord 4K pages to account for VM stack during
-  // class initialization depending on 32 or 64 bit VM.
-  os::Bsd::min_stack_allowed = MAX2(os::Bsd::min_stack_allowed,
-                                    JavaThread::stack_guard_zone_size() +
-                                    JavaThread::stack_shadow_zone_size() +
-                                    (4*BytesPerWord COMPILER2_PRESENT(+2)) * 4 * K);
-
-  os::Bsd::min_stack_allowed = align_size_up(os::Bsd::min_stack_allowed, os::vm_page_size());
-
-  size_t threadStackSizeInBytes = ThreadStackSize * K;
-  if (threadStackSizeInBytes != 0 &&
-      threadStackSizeInBytes < os::Bsd::min_stack_allowed) {
-    tty->print_cr("\nThe stack size specified is too small, "
-                  "Specify at least %dk",
-                  os::Bsd::min_stack_allowed/ K);
+  // Check and sets minimum stack sizes against command line options
+  if (Posix::set_minimum_stack_sizes() == JNI_ERR) {
     return JNI_ERR;
   }
 
-  // Make the stack size a multiple of the page size so that
-  // the yellow/red zones can be guarded.
-  JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
-                                                vm_page_size()));
-
   if (MaxFDLimit) {
     // set the number of file descriptors to max. print out error
     // if getrlimit/setrlimit fails but continue regardless.
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/bsd/vm/os_bsd.hpp
--- a/hotspot/src/os/bsd/vm/os_bsd.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/bsd/vm/os_bsd.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -120,14 +120,6 @@
   static struct sigaction *get_chained_signal_action(int sig);
   static bool chained_handler(int sig, siginfo_t* siginfo, void* context);
 
-  // Minimum stack size a thread can be created with (allowing
-  // the VM to completely create the thread and enter user code)
-  static size_t min_stack_allowed;
-
-  // Return default stack size or guard size for the specified thread type
-  static size_t default_stack_size(os::ThreadType thr_type);
-  static size_t default_guard_size(os::ThreadType thr_type);
-
   // Real-time clock functions
   static void clock_init(void);
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/linux/vm/os_linux.cpp
--- a/hotspot/src/os/linux/vm/os_linux.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/linux/vm/os_linux.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -701,7 +701,7 @@
 }
 
 bool os::create_thread(Thread* thread, ThreadType thr_type,
-                       size_t stack_size) {
+                       size_t req_stack_size) {
   assert(thread->osthread() == NULL, "caller responsible");
 
   // Allocate the OSThread object
@@ -723,34 +723,8 @@
   pthread_attr_init(&attr);
   pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 
-  // stack size
   // calculate stack size if it's not specified by caller
-  if (stack_size == 0) {
-    stack_size = os::Linux::default_stack_size(thr_type);
-
-    switch (thr_type) {
-    case os::java_thread:
-      // Java threads use ThreadStackSize which default value can be
-      // changed with the flag -Xss
-      assert(JavaThread::stack_size_at_create() > 0, "this should be set");
-      stack_size = JavaThread::stack_size_at_create();
-      break;
-    case os::compiler_thread:
-      if (CompilerThreadStackSize > 0) {
-        stack_size = (size_t)(CompilerThreadStackSize * K);
-        break;
-      } // else fall through:
-        // use VMThreadStackSize if CompilerThreadStackSize is not defined
-    case os::vm_thread:
-    case os::pgc_thread:
-    case os::cgc_thread:
-    case os::watcher_thread:
-      if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
-      break;
-    }
-  }
-
-  stack_size = MAX2(stack_size, os::Linux::min_stack_allowed);
+  size_t stack_size = os::Posix::get_initial_stack_size(thr_type, req_stack_size);
   pthread_attr_setstacksize(&attr, stack_size);
 
   // glibc guard page
@@ -956,10 +930,9 @@
 // bogus value for initial thread.
 void os::Linux::capture_initial_stack(size_t max_size) {
   // stack size is the easy part, get it from RLIMIT_STACK
-  size_t stack_size;
   struct rlimit rlim;
   getrlimit(RLIMIT_STACK, &rlim);
-  stack_size = rlim.rlim_cur;
+  size_t stack_size = rlim.rlim_cur;
 
   // 6308388: a bug in ld.so will relocate its own .data section to the
   //   lower end of primordial stack; reduce ulimit -s value a little bit
@@ -4793,32 +4766,10 @@
   Linux::signal_sets_init();
   Linux::install_signal_handlers();
 
-  // Check minimum allowable stack size for thread creation and to initialize
-  // the java system classes, including StackOverflowError - depends on page
-  // size.  Add two 4K pages for compiler2 recursion in main thread.
-  // Add in 4*BytesPerWord 4K pages to account for VM stack during
-  // class initialization depending on 32 or 64 bit VM.
-  os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
-                                      JavaThread::stack_guard_zone_size() +
-                                      JavaThread::stack_shadow_zone_size() +
-                                      (4*BytesPerWord COMPILER2_PRESENT(+2)) * 4 * K);
-
-  os::Linux::min_stack_allowed = align_size_up(os::Linux::min_stack_allowed, os::vm_page_size());
-
-  size_t threadStackSizeInBytes = ThreadStackSize * K;
-  if (threadStackSizeInBytes != 0 &&
-      threadStackSizeInBytes < os::Linux::min_stack_allowed) {
-    tty->print_cr("\nThe stack size specified is too small, "
-                  "Specify at least " SIZE_FORMAT "k",
-                  os::Linux::min_stack_allowed/ K);
+  // Check and sets minimum stack sizes against command line options
+  if (Posix::set_minimum_stack_sizes() == JNI_ERR) {
     return JNI_ERR;
   }
-
-  // Make the stack size a multiple of the page size so that
-  // the yellow/red zones can be guarded.
-  JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
-                                                vm_page_size()));
-
   Linux::capture_initial_stack(JavaThread::stack_size_at_create());
 
 #if defined(IA32)
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/linux/vm/os_linux.hpp
--- a/hotspot/src/os/linux/vm/os_linux.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/linux/vm/os_linux.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -170,12 +170,8 @@
   static void libpthread_init();
   static bool libnuma_init();
   static void* libnuma_dlsym(void* handle, const char* name);
-  // Minimum stack size a thread can be created with (allowing
-  // the VM to completely create the thread and enter user code)
-  static size_t min_stack_allowed;
 
-  // Return default stack size or guard size for the specified thread type
-  static size_t default_stack_size(os::ThreadType thr_type);
+  // Return default guard size for the specified thread type
   static size_t default_guard_size(os::ThreadType thr_type);
 
   static void capture_initial_stack(size_t max_size);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/posix/vm/os_posix.cpp
--- a/hotspot/src/os/posix/vm/os_posix.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/posix/vm/os_posix.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1099,6 +1099,123 @@
   return buf;
 }
 
+// Check minimum allowable stack sizes for thread creation and to initialize
+// the java system classes, including StackOverflowError - depends on page
+// size.  Add two 4K pages for compiler2 recursion in main thread.
+// Add in 4*BytesPerWord 4K pages to account for VM stack during
+// class initialization depending on 32 or 64 bit VM.
+jint os::Posix::set_minimum_stack_sizes() {
+  _java_thread_min_stack_allowed = MAX2(_java_thread_min_stack_allowed,
+                                        JavaThread::stack_guard_zone_size() +
+                                        JavaThread::stack_shadow_zone_size() +
+                                        (4 * BytesPerWord COMPILER2_PRESENT(+ 2)) * 4 * K);
+
+  _java_thread_min_stack_allowed = align_size_up(_java_thread_min_stack_allowed, vm_page_size());
+
+  size_t stack_size_in_bytes = ThreadStackSize * K;
+  if (stack_size_in_bytes != 0 &&
+      stack_size_in_bytes < _java_thread_min_stack_allowed) {
+    // The '-Xss' and '-XX:ThreadStackSize=N' options both set
+    // ThreadStackSize so we go with "Java thread stack size" instead
+    // of "ThreadStackSize" to be more friendly.
+    tty->print_cr("\nThe Java thread stack size specified is too small. "
+                  "Specify at least " SIZE_FORMAT "k",
+                  _java_thread_min_stack_allowed / K);
+    return JNI_ERR;
+  }
+
+#ifdef SOLARIS
+  // For 64kbps there will be a 64kb page size, which makes
+  // the usable default stack size quite a bit less.  Increase the
+  // stack for 64kb (or any > than 8kb) pages, this increases
+  // virtual memory fragmentation (since we're not creating the
+  // stack on a power of 2 boundary.  The real fix for this
+  // should be to fix the guard page mechanism.
+
+  if (vm_page_size() > 8*K) {
+    stack_size_in_bytes = (stack_size_in_bytes != 0)
+       ? stack_size_in_bytes +
+         JavaThread::stack_red_zone_size() +
+         JavaThread::stack_yellow_zone_size()
+       : 0;
+    ThreadStackSize = stack_size_in_bytes/K;
+  }
+#endif // SOLARIS
+
+  // Make the stack size a multiple of the page size so that
+  // the yellow/red zones can be guarded.
+  JavaThread::set_stack_size_at_create(round_to(stack_size_in_bytes,
+                                                vm_page_size()));
+
+  _compiler_thread_min_stack_allowed = align_size_up(_compiler_thread_min_stack_allowed, vm_page_size());
+
+  stack_size_in_bytes = CompilerThreadStackSize * K;
+  if (stack_size_in_bytes != 0 &&
+      stack_size_in_bytes < _compiler_thread_min_stack_allowed) {
+    tty->print_cr("\nThe CompilerThreadStackSize specified is too small. "
+                  "Specify at least " SIZE_FORMAT "k",
+                  _compiler_thread_min_stack_allowed / K);
+    return JNI_ERR;
+  }
+
+  _vm_internal_thread_min_stack_allowed = align_size_up(_vm_internal_thread_min_stack_allowed, vm_page_size());
+
+  stack_size_in_bytes = VMThreadStackSize * K;
+  if (stack_size_in_bytes != 0 &&
+      stack_size_in_bytes < _vm_internal_thread_min_stack_allowed) {
+    tty->print_cr("\nThe VMThreadStackSize specified is too small. "
+                  "Specify at least " SIZE_FORMAT "k",
+                  _vm_internal_thread_min_stack_allowed / K);
+    return JNI_ERR;
+  }
+  return JNI_OK;
+}
+
+// Called when creating the thread.  The minimum stack sizes have already been calculated
+size_t os::Posix::get_initial_stack_size(ThreadType thr_type, size_t req_stack_size) {
+  size_t stack_size;
+  if (req_stack_size == 0) {
+    stack_size = default_stack_size(thr_type);
+  } else {
+    stack_size = req_stack_size;
+  }
+
+  switch (thr_type) {
+  case os::java_thread:
+    // Java threads use ThreadStackSize which default value can be
+    // changed with the flag -Xss
+    if (req_stack_size == 0 && JavaThread::stack_size_at_create() > 0) {
+      // no requested size and we have a more specific default value
+      stack_size = JavaThread::stack_size_at_create();
+    }
+    stack_size = MAX2(stack_size,
+                      _java_thread_min_stack_allowed);
+    break;
+  case os::compiler_thread:
+    if (req_stack_size == 0 && CompilerThreadStackSize > 0) {
+      // no requested size and we have a more specific default value
+      stack_size = (size_t)(CompilerThreadStackSize * K);
+    }
+    stack_size = MAX2(stack_size,
+                      _compiler_thread_min_stack_allowed);
+    break;
+  case os::vm_thread:
+  case os::pgc_thread:
+  case os::cgc_thread:
+  case os::watcher_thread:
+  default:  // presume the unknown thr_type is a VM internal
+    if (req_stack_size == 0 && VMThreadStackSize > 0) {
+      // no requested size and we have a more specific default value
+      stack_size = (size_t)(VMThreadStackSize * K);
+    }
+
+    stack_size = MAX2(stack_size,
+                      _vm_internal_thread_min_stack_allowed);
+    break;
+  }
+
+  return stack_size;
+}
 
 os::WatcherThreadCrashProtection::WatcherThreadCrashProtection() {
   assert(Thread::current()->is_Watcher_thread(), "Must be WatcherThread");
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/posix/vm/os_posix.hpp
--- a/hotspot/src/os/posix/vm/os_posix.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/posix/vm/os_posix.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -42,7 +42,18 @@
   static void print_libversion_info(outputStream* st);
   static void print_load_average(outputStream* st);
 
+  // Minimum stack size a thread can be created with (allowing
+  // the VM to completely create the thread and enter user code)
+  static size_t _compiler_thread_min_stack_allowed;
+  static size_t _java_thread_min_stack_allowed;
+  static size_t _vm_internal_thread_min_stack_allowed;
+
 public:
+  // Return default stack size for the specified thread type
+  static size_t default_stack_size(os::ThreadType thr_type);
+  // Check and sets minimum stack sizes
+  static jint set_minimum_stack_sizes();
+  static size_t get_initial_stack_size(ThreadType thr_type, size_t req_stack_size);
 
   // Returns true if signal is valid.
   static bool is_valid_signal(int sig);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/solaris/vm/os_solaris.cpp
--- a/hotspot/src/os/solaris/vm/os_solaris.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/solaris/vm/os_solaris.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -917,8 +917,15 @@
   return buf;
 }
 
+// return default stack size for thr_type
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
+  // default stack size when not specified by caller is 1M (2M for LP64)
+  size_t s = (BytesPerWord >> 2) * K * K;
+  return s;
+}
+
 bool os::create_thread(Thread* thread, ThreadType thr_type,
-                       size_t stack_size) {
+                       size_t req_stack_size) {
   // Allocate the OSThread object
   OSThread* osthread = new OSThread(NULL, NULL);
   if (osthread == NULL) {
@@ -953,31 +960,8 @@
     tty->print_cr("In create_thread, creating a %s thread\n", thrtyp);
   }
 
-  // Calculate stack size if it's not specified by caller.
-  if (stack_size == 0) {
-    // The default stack size 1M (2M for LP64).
-    stack_size = (BytesPerWord >> 2) * K * K;
-
-    switch (thr_type) {
-    case os::java_thread:
-      // Java threads use ThreadStackSize which default value can be changed with the flag -Xss
-      if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create();
-      break;
-    case os::compiler_thread:
-      if (CompilerThreadStackSize > 0) {
-        stack_size = (size_t)(CompilerThreadStackSize * K);
-        break;
-      } // else fall through:
-        // use VMThreadStackSize if CompilerThreadStackSize is not defined
-    case os::vm_thread:
-    case os::pgc_thread:
-    case os::cgc_thread:
-    case os::watcher_thread:
-      if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
-      break;
-    }
-  }
-  stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed);
+  // calculate stack size if it's not specified by caller
+  size_t stack_size = os::Posix::get_initial_stack_size(thr_type, req_stack_size);
 
   // Initial state is ALLOCATED but not INITIALIZED
   osthread->set_state(ALLOCATED);
@@ -4400,7 +4384,12 @@
   // Constant minimum stack size allowed. It must be at least
   // the minimum of what the OS supports (thr_min_stack()), and
   // enough to allow the thread to get to user bytecode execution.
-  Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed);
+  Posix::_compiler_thread_min_stack_allowed = MAX2(thr_min_stack(),
+                                                   Posix::_compiler_thread_min_stack_allowed);
+  Posix::_java_thread_min_stack_allowed = MAX2(thr_min_stack(),
+                                               Posix::_java_thread_min_stack_allowed);
+  Posix::_vm_internal_thread_min_stack_allowed = MAX2(thr_min_stack(),
+                                                      Posix::_vm_internal_thread_min_stack_allowed);
 
   // dynamic lookup of functions that may not be available in our lowest
   // supported Solaris release
@@ -4445,47 +4434,11 @@
     log_info(os)("Memory Serialize Page address: " INTPTR_FORMAT, p2i(mem_serialize_page));
   }
 
-  // Check minimum allowable stack size for thread creation and to initialize
-  // the java system classes, including StackOverflowError - depends on page
-  // size.  Add two 4K pages for compiler2 recursion in main thread.
-  // Add in 4*BytesPerWord 4K pages to account for VM stack during
-  // class initialization depending on 32 or 64 bit VM.
-  os::Solaris::min_stack_allowed = MAX2(os::Solaris::min_stack_allowed,
-                                        JavaThread::stack_guard_zone_size() +
-                                        JavaThread::stack_shadow_zone_size() +
-                                        (4*BytesPerWord COMPILER2_PRESENT(+2)) * 4 * K);
-
-  os::Solaris::min_stack_allowed = align_size_up(os::Solaris::min_stack_allowed, os::vm_page_size());
-
-  size_t threadStackSizeInBytes = ThreadStackSize * K;
-  if (threadStackSizeInBytes != 0 &&
-      threadStackSizeInBytes < os::Solaris::min_stack_allowed) {
-    tty->print_cr("\nThe stack size specified is too small, Specify at least %dk",
-                  os::Solaris::min_stack_allowed/K);
+  // Check and sets minimum stack sizes against command line options
+  if (Posix::set_minimum_stack_sizes() == JNI_ERR) {
     return JNI_ERR;
   }
 
-  // For 64kbps there will be a 64kb page size, which makes
-  // the usable default stack size quite a bit less.  Increase the
-  // stack for 64kb (or any > than 8kb) pages, this increases
-  // virtual memory fragmentation (since we're not creating the
-  // stack on a power of 2 boundary.  The real fix for this
-  // should be to fix the guard page mechanism.
-
-  if (vm_page_size() > 8*K) {
-    threadStackSizeInBytes = (threadStackSizeInBytes != 0)
-       ? threadStackSizeInBytes +
-         JavaThread::stack_red_zone_size() +
-         JavaThread::stack_yellow_zone_size()
-       : 0;
-    ThreadStackSize = threadStackSizeInBytes/K;
-  }
-
-  // Make the stack size a multiple of the page size so that
-  // the yellow/red zones can be guarded.
-  JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
-                                                vm_page_size()));
-
   Solaris::libthread_init();
 
   if (UseNUMA) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/solaris/vm/os_solaris.hpp
--- a/hotspot/src/os/solaris/vm/os_solaris.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/solaris/vm/os_solaris.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -292,10 +292,6 @@
   static          jint  _os_thread_limit;
   static volatile jint  _os_thread_count;
 
-  // Minimum stack size a thread can be created with (allowing
-  // the VM to completely create the thread and enter user code)
-
-  static size_t min_stack_allowed;
 
   // Stack overflow handling
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os/windows/vm/os_windows.cpp
--- a/hotspot/src/os/windows/vm/os_windows.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os/windows/vm/os_windows.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -4215,7 +4215,7 @@
   min_stack_allowed = align_size_up(min_stack_allowed, os::vm_page_size());
 
   if (actual_reserve_size < min_stack_allowed) {
-    tty->print_cr("\nThe stack size specified is too small, "
+    tty->print_cr("\nThe Java thread stack size specified is too small. "
                   "Specify at least %dk",
                   min_stack_allowed / K);
     return JNI_ERR;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp
--- a/hotspot/src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/aix_ppc/vm/globals_aix_ppc.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -33,10 +33,6 @@
 define_pd_global(intx, ThreadStackSize,          2048); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        2048);
 
-// if we set CompilerThreadStackSize to a value different than 0, it will
-// be used in os::create_thread(). Otherwise, due the strange logic in os::create_thread(),
-// the stack size for compiler threads will default to VMThreadStackSize, although it
-// is defined to 4M in os::Aix::default_stack_size()!
 define_pd_global(intx, CompilerThreadStackSize,  4096);
 
 // Allow extra space in DEBUG builds for asserts.
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/aix_ppc/vm/os_aix_ppc.cpp
--- a/hotspot/src/os_cpu/aix_ppc/vm/os_aix_ppc.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/aix_ppc/vm/os_aix_ppc.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -192,8 +192,10 @@
   intptr_t* csp = (intptr_t*) *((intptr_t*) os::current_stack_pointer());
   // hack.
   frame topframe(csp, (address)0x8);
-  // return sender of current topframe which hopefully has pc != NULL.
-  return os::get_sender_for_C_frame(&topframe);
+  // Return sender of sender of current topframe which hopefully
+  // both have pc != NULL.
+  frame tmp = os::get_sender_for_C_frame(&topframe);
+  return os::get_sender_for_C_frame(&tmp);
 }
 
 // Utility functions
@@ -533,23 +535,17 @@
 ////////////////////////////////////////////////////////////////////////////////
 // thread stack
 
-size_t os::Aix::min_stack_allowed = 128*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K;
 
 // return default stack size for thr_type
-size_t os::Aix::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
   // default stack size (compiler thread needs larger stack)
-  // Notice that the setting for compiler threads here have no impact
-  // because of the strange 'fallback logic' in os::create_thread().
-  // Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to
-  // specify a different stack size for compiler threads!
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
   return s;
 }
 
-size_t os::Aix::default_guard_size(os::ThreadType thr_type) {
-  return 2 * page_size();
-}
-
 /////////////////////////////////////////////////////////////////////////////
 // helper functions for fatal error handler
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp
--- a/hotspot/src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/bsd_x86/vm/globals_bsd_x86.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -31,9 +31,11 @@
 //
 define_pd_global(bool, DontYieldALot,            false);
 #ifdef AMD64
+define_pd_global(intx, CompilerThreadStackSize,  1024);
 define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        1024);
 #else
+define_pd_global(intx, CompilerThreadStackSize,  512);
 // ThreadStackSize 320 allows a couple of test cases to run while
 // keeping the number of threads that can be created high.  System
 // default ThreadStackSize appears to be 512 which is too big.
@@ -41,7 +43,6 @@
 define_pd_global(intx, VMThreadStackSize,        512);
 #endif // AMD64
 
-define_pd_global(intx, CompilerThreadStackSize,  0);
 
 define_pd_global(size_t, JVMInvokeMethodSlack,   8192);
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp
--- a/hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/bsd_x86/vm/os_bsd_x86.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -838,9 +838,13 @@
 // thread stack
 
 #ifdef AMD64
-size_t os::Bsd::min_stack_allowed  = 64 * K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
 #else
-size_t os::Bsd::min_stack_allowed  =  (48 DEBUG_ONLY(+4))*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
+size_t os::Posix::_java_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
 
 #ifdef __GNUC__
 #define GET_GS() ({int gs; __asm__ volatile("movw %%gs, %w0":"=q"(gs)); gs&0xffff;})
@@ -849,7 +853,7 @@
 #endif // AMD64
 
 // return default stack size for thr_type
-size_t os::Bsd::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
   // default stack size (compiler thread needs larger stack)
 #ifdef AMD64
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
@@ -859,11 +863,6 @@
   return s;
 }
 
-size_t os::Bsd::default_guard_size(os::ThreadType thr_type) {
-  // Creating guard page is very expensive. Java thread has HotSpot
-  // guard page, only enable glibc guard page for non-Java threads.
-  return (thr_type == java_thread ? 0 : page_size());
-}
 
 // Java thread:
 //
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/bsd_zero/vm/os_bsd_zero.cpp
--- a/hotspot/src/os_cpu/bsd_zero/vm/os_bsd_zero.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/bsd_zero/vm/os_bsd_zero.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -282,9 +282,11 @@
 ///////////////////////////////////////////////////////////////////////////////
 // thread stack
 
-size_t os::Bsd::min_stack_allowed = 64 * K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
 
-size_t os::Bsd::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
 #ifdef _LP64
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
 #else
@@ -293,12 +295,6 @@
   return s;
 }
 
-size_t os::Bsd::default_guard_size(os::ThreadType thr_type) {
-  // Only enable glibc guard pages for non-Java threads
-  // (Java threads have HotSpot guard pages)
-  return (thr_type == java_thread ? 0 : page_size());
-}
-
 static void current_stack_region(address *bottom, size_t *size) {
   address stack_bottom;
   address stack_top;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_aarch64/vm/globals_linux_aarch64.hpp
--- a/hotspot/src/os_cpu/linux_aarch64/vm/globals_linux_aarch64.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_aarch64/vm/globals_linux_aarch64.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -33,7 +33,7 @@
 define_pd_global(intx, ThreadStackSize,          2048); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        2048);
 
-define_pd_global(intx, CompilerThreadStackSize,  0);
+define_pd_global(intx, CompilerThreadStackSize,  2048);
 
 define_pd_global(uintx,JVMInvokeMethodSlack,     8192);
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_aarch64/vm/os_linux_aarch64.cpp
--- a/hotspot/src/os_cpu/linux_aarch64/vm/os_linux_aarch64.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_aarch64/vm/os_linux_aarch64.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -473,10 +473,12 @@
 ////////////////////////////////////////////////////////////////////////////////
 // thread stack
 
-size_t os::Linux::min_stack_allowed  = 64 * K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
 
 // return default stack size for thr_type
-size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
   // default stack size (compiler thread needs larger stack)
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
   return s;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp
--- a/hotspot/src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_ppc/vm/globals_linux_ppc.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2016, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -33,10 +33,6 @@
 define_pd_global(intx, ThreadStackSize,          2048); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        2048);
 
-// if we set CompilerThreadStackSize to a value different than 0, it will
-// be used in os::create_thread(). Otherwise, due the strange logic in os::create_thread(),
-// the stack size for compiler threads will default to VMThreadStackSize, although it
-// is defined to 4M in os::Linux::default_stack_size()!
 define_pd_global(intx, CompilerThreadStackSize,  4096);
 
 // Allow extra space in DEBUG builds for asserts.
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_ppc/vm/os_linux_ppc.cpp
--- a/hotspot/src/os_cpu/linux_ppc/vm/os_linux_ppc.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_ppc/vm/os_linux_ppc.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -205,8 +205,10 @@
   intptr_t* csp = (intptr_t*) *((intptr_t*) os::current_stack_pointer());
   // hack.
   frame topframe(csp, (address)0x8);
-  // return sender of current topframe which hopefully has pc != NULL.
-  return os::get_sender_for_C_frame(&topframe);
+  // Return sender of sender of current topframe which hopefully
+  // both have pc != NULL.
+  frame tmp = os::get_sender_for_C_frame(&topframe);
+  return os::get_sender_for_C_frame(&tmp);
 }
 
 // Utility functions
@@ -533,15 +535,13 @@
 ////////////////////////////////////////////////////////////////////////////////
 // thread stack
 
-size_t os::Linux::min_stack_allowed = 128*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K;
 
 // return default stack size for thr_type
-size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
   // default stack size (compiler thread needs larger stack)
-  // Notice that the setting for compiler threads here have no impact
-  // because of the strange 'fallback logic' in os::create_thread().
-  // Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to
-  // specify a different stack size for compiler threads!
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1024 * K);
   return s;
 }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp
--- a/hotspot/src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -31,7 +31,6 @@
 //
 
 define_pd_global(size_t, JVMInvokeMethodSlack,   12288);
-define_pd_global(intx, CompilerThreadStackSize,  0);
 
 // Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(size_t, HeapBaseMinAddress,     CONST64(4)*G);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp
--- a/hotspot/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -726,10 +726,12 @@
 ///////////////////////////////////////////////////////////////////////////////
 // thread stack
 
-size_t os::Linux::min_stack_allowed  = 128 * K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K;
 
 // return default stack size for thr_type
-size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
   // default stack size (compiler thread needs larger stack)
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
   return s;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_x86/vm/globals_linux_x86.hpp
--- a/hotspot/src/os_cpu/linux_x86/vm/globals_linux_x86.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_x86/vm/globals_linux_x86.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -30,9 +30,11 @@
 
 define_pd_global(bool, DontYieldALot,            false);
 #ifdef AMD64
+define_pd_global(intx, CompilerThreadStackSize,  1024);
 define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        1024);
 #else
+define_pd_global(intx, CompilerThreadStackSize,  512);
 // ThreadStackSize 320 allows a couple of test cases to run while
 // keeping the number of threads that can be created high.  System
 // default ThreadStackSize appears to be 512 which is too big.
@@ -40,8 +42,6 @@
 define_pd_global(intx, VMThreadStackSize,        512);
 #endif // AMD64
 
-define_pd_global(intx, CompilerThreadStackSize,  0);
-
 define_pd_global(size_t, JVMInvokeMethodSlack,   8192);
 
 // Used on 64 bit platforms for UseCompressedOops base address
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
--- a/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -676,13 +676,17 @@
 // thread stack
 
 #ifdef AMD64
-size_t os::Linux::min_stack_allowed  = 64 * K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
 #else
-size_t os::Linux::min_stack_allowed  =  (48 DEBUG_ONLY(+4))*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
+size_t os::Posix::_java_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = (48 DEBUG_ONLY(+ 4)) * K;
 #endif // AMD64
 
 // return default stack size for thr_type
-size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
   // default stack size (compiler thread needs larger stack)
 #ifdef AMD64
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.cpp
--- a/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -307,9 +307,11 @@
 ///////////////////////////////////////////////////////////////////////////////
 // thread stack
 
-size_t os::Linux::min_stack_allowed = 64 * K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
 
-size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
+size_t os::Posix::default_stack_size(os::ThreadType thr_type) {
 #ifdef _LP64
   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
 #else
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp
--- a/hotspot/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/solaris_sparc/vm/globals_solaris_sparc.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -31,7 +31,6 @@
 //
 
 define_pd_global(size_t, JVMInvokeMethodSlack,   12288);
-define_pd_global(intx, CompilerThreadStackSize,  0);
 
 // Used on 64 bit platforms for UseCompressedOops base address
 #ifdef _LP64
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp
--- a/hotspot/src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -84,9 +84,13 @@
 // Minimum stack size for the VM.  It's easier to document a constant
 // but it's different for x86 and sparc because the page sizes are different.
 #ifdef _LP64
-size_t os::Solaris::min_stack_allowed = 128*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 128 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K;
 #else
-size_t os::Solaris::min_stack_allowed = 96*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 96 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 96 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 96 * K;
 #endif
 
 int os::Solaris::max_register_window_saves_before_flushing() {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp
--- a/hotspot/src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -30,10 +30,12 @@
 
 define_pd_global(bool, DontYieldALot,            true); // Determined in the design center
 #ifdef AMD64
+define_pd_global(intx, CompilerThreadStackSize,  1024);
 define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        1024);
 define_pd_global(size_t, JVMInvokeMethodSlack,   8*K);
 #else
+define_pd_global(intx, CompilerThreadStackSize,  512);
 // ThreadStackSize 320 allows a couple of test cases to run while
 // keeping the number of threads that can be created high.
 define_pd_global(intx, ThreadStackSize,          320);
@@ -41,7 +43,6 @@
 define_pd_global(size_t, JVMInvokeMethodSlack,   10*K);
 #endif // AMD64
 
-define_pd_global(intx, CompilerThreadStackSize,  0);
 
 // Used on 64 bit platforms for UseCompressedOops base address
 define_pd_global(size_t, HeapBaseMinAddress,     2*G);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp
--- a/hotspot/src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -86,15 +86,19 @@
 
 #define MAX_PATH (2 * K)
 
-// Minimum stack size for the VM.  It's easier to document a constant value
+// Minimum stack sizes for the VM.  It's easier to document a constant value
 // but it's different for x86 and sparc because the page sizes are different.
 #ifdef AMD64
-size_t os::Solaris::min_stack_allowed = 224*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 394 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 224 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 224 * K;
 #define REG_SP REG_RSP
 #define REG_PC REG_RIP
 #define REG_FP REG_RBP
 #else
-size_t os::Solaris::min_stack_allowed = 64*K;
+size_t os::Posix::_compiler_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_java_thread_min_stack_allowed = 64 * K;
+size_t os::Posix::_vm_internal_thread_min_stack_allowed = 64 * K;
 #define REG_SP UESP
 #define REG_PC EIP
 #define REG_FP EBP
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/c1/c1_LIRGenerator.cpp
--- a/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/c1/c1_LIRGenerator.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -2410,6 +2410,15 @@
 #endif // INCLUDE_ALL_GCS
 
   if (x->is_volatile() && os::is_MP()) __ membar_acquire();
+
+  /* Normalize boolean value returned by unsafe operation, i.e., value  != 0 ? value = true : value false. */
+  if (type == T_BOOLEAN) {
+    LabelObj* equalZeroLabel = new LabelObj();
+    __ cmp(lir_cond_equal, value, 0);
+    __ branch(lir_cond_equal, T_BOOLEAN, equalZeroLabel->label());
+    __ move(LIR_OprFact::intConst(1), value);
+    __ branch_destination(equalZeroLabel->label());
+  }
 }
 
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/c1/c1_Runtime1.cpp
--- a/hotspot/src/share/vm/c1/c1_Runtime1.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/c1/c1_Runtime1.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -576,9 +576,8 @@
     // normal bytecode execution.
     thread->clear_exception_oop_and_pc();
 
-    Handle original_exception(thread, exception());
-
-    continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false);
+    bool recursive_exception = false;
+    continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false, recursive_exception);
     // If an exception was thrown during exception dispatch, the exception oop may have changed
     thread->set_exception_oop(exception());
     thread->set_exception_pc(pc);
@@ -586,8 +585,9 @@
     // the exception cache is used only by non-implicit exceptions
     // Update the exception cache only when there didn't happen
     // another exception during the computation of the compiled
-    // exception handler.
-    if (continuation != NULL && original_exception() == exception()) {
+    // exception handler. Checking for exception oop equality is not
+    // sufficient because some exceptions are pre-allocated and reused.
+    if (continuation != NULL && !recursive_exception) {
       nm->add_handler_for_exception_and_pc(exception, pc, continuation);
     }
   }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/classfile/verificationType.hpp
--- a/hotspot/src/share/vm/classfile/verificationType.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/classfile/verificationType.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 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
@@ -95,7 +95,8 @@
       Category2_2nd      = (Category2_2ndFlag << 1 * BitsPerByte) | Primitive,
 
       // Primitive values (type descriminator stored in most-signifcant bytes)
-      Bogus              = (ITEM_Bogus      << 2 * BitsPerByte) | Category1,
+      // Bogus needs the " | Primitive".  Else, is_reference(Bogus) returns TRUE.
+      Bogus              = (ITEM_Bogus      << 2 * BitsPerByte) | Primitive,
       Boolean            = (ITEM_Boolean    << 2 * BitsPerByte) | Category1,
       Byte               = (ITEM_Byte       << 2 * BitsPerByte) | Category1,
       Short              = (ITEM_Short      << 2 * BitsPerByte) | Category1,
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/code/codeCache.cpp
--- a/hotspot/src/share/vm/code/codeCache.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/code/codeCache.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1305,7 +1305,7 @@
     event.set_entryCount(heap->blob_count());
     event.set_methodCount(heap->nmethod_count());
     event.set_adaptorCount(heap->adapter_count());
-    event.set_unallocatedCapacity(heap->unallocated_capacity()/K);
+    event.set_unallocatedCapacity(heap->unallocated_capacity());
     event.set_fullCount(heap->full_count());
     event.commit();
   }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/g1/g1CollectionSet.cpp
--- a/hotspot/src/share/vm/gc/g1/g1CollectionSet.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1CollectionSet.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -32,6 +32,7 @@
 #include "gc/g1/heapRegionSet.hpp"
 #include "logging/logStream.hpp"
 #include "utilities/debug.hpp"
+#include "utilities/quickSort.hpp"
 
 G1CollectorState* G1CollectionSet::collector_state() {
   return _g1->collector_state();
@@ -396,6 +397,16 @@
   return time_remaining_ms;
 }
 
+static int compare_region_idx(const uint a, const uint b) {
+  if (a > b) {
+    return 1;
+  } else if (a == b) {
+    return 0;
+  } else {
+    return -1;
+  }
+}
+
 void G1CollectionSet::finalize_old_part(double time_remaining_ms) {
   double non_young_start_time_sec = os::elapsedTime();
   double predicted_old_time_ms = 0.0;
@@ -493,6 +504,8 @@
 
   double non_young_end_time_sec = os::elapsedTime();
   phase_times()->record_non_young_cset_choice_time_ms((non_young_end_time_sec - non_young_start_time_sec) * 1000.0);
+
+  QuickSort::sort<uint>(_collection_set_regions, (int)_collection_set_cur_length, compare_region_idx, true);
 }
 
 #ifdef ASSERT
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/g1/g1ConcurrentMark.cpp
--- a/hotspot/src/share/vm/gc/g1/g1ConcurrentMark.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1ConcurrentMark.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1904,7 +1904,8 @@
     assert(_g1h->is_in_g1_reserved(finger), "invariant");
 
     HeapRegion* curr_region = _g1h->heap_region_containing(finger);
-
+    // Make sure that the reads below do not float before loading curr_region.
+    OrderAccess::loadload();
     // Above heap_region_containing may return NULL as we always scan claim
     // until the end of the heap. In this case, just jump to the next region.
     HeapWord* end = curr_region != NULL ? curr_region->end() : finger + HeapRegion::GrainWords;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/g1/g1MarkSweep.cpp
--- a/hotspot/src/share/vm/gc/g1/g1MarkSweep.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1MarkSweep.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -132,9 +132,16 @@
   MarkingCodeBlobClosure follow_code_closure(&GenMarkSweep::follow_root_closure, !CodeBlobToOopClosure::FixRelocations);
   {
     G1RootProcessor root_processor(g1h, 1);
-    root_processor.process_strong_roots(&GenMarkSweep::follow_root_closure,
-                                        &GenMarkSweep::follow_cld_closure,
-                                        &follow_code_closure);
+    if (ClassUnloading) {
+      root_processor.process_strong_roots(&GenMarkSweep::follow_root_closure,
+                                          &GenMarkSweep::follow_cld_closure,
+                                          &follow_code_closure);
+    } else {
+      root_processor.process_all_roots_no_string_table(
+                                          &GenMarkSweep::follow_root_closure,
+                                          &GenMarkSweep::follow_cld_closure,
+                                          &follow_code_closure);
+    }
   }
 
   {
@@ -157,7 +164,7 @@
   // This is the point where the entire marking should have completed.
   assert(GenMarkSweep::_marking_stack.is_empty(), "Marking should have completed");
 
-  {
+  if (ClassUnloading) {
     GCTraceTime(Debug, gc, phases) trace("Class Unloading", gc_timer());
 
     // Unload classes and purge the SystemDictionary.
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/g1/g1RootProcessor.cpp
--- a/hotspot/src/share/vm/gc/g1/g1RootProcessor.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1RootProcessor.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -83,6 +83,7 @@
   }
 
   process_vm_roots(closures, phase_times, worker_i);
+  process_string_table_roots(closures, phase_times, worker_i);
 
   {
     // Now the CM ref_processor roots.
@@ -191,19 +192,34 @@
 
 void G1RootProcessor::process_all_roots(OopClosure* oops,
                                         CLDClosure* clds,
-                                        CodeBlobClosure* blobs) {
+                                        CodeBlobClosure* blobs,
+                                        bool process_string_table) {
   AllRootsClosures closures(oops, clds);
 
   process_java_roots(&closures, NULL, 0);
   process_vm_roots(&closures, NULL, 0);
 
-  if (!_process_strong_tasks.is_task_claimed(G1RP_PS_CodeCache_oops_do)) {
-    CodeCache::blobs_do(blobs);
+  if (process_string_table) {
+    process_string_table_roots(&closures, NULL, 0);
   }
+  process_code_cache_roots(blobs, NULL, 0);
 
   _process_strong_tasks.all_tasks_completed(n_workers());
 }
 
+void G1RootProcessor::process_all_roots(OopClosure* oops,
+                                        CLDClosure* clds,
+                                        CodeBlobClosure* blobs) {
+  process_all_roots(oops, clds, blobs, true);
+}
+
+void G1RootProcessor::process_all_roots_no_string_table(OopClosure* oops,
+                                                        CLDClosure* clds,
+                                                        CodeBlobClosure* blobs) {
+  assert(!ClassUnloading, "Should only be used when class unloading is disabled");
+  process_all_roots(oops, clds, blobs, false);
+}
+
 void G1RootProcessor::process_java_roots(G1RootClosures* closures,
                                          G1GCPhaseTimes* phase_times,
                                          uint worker_i) {
@@ -280,14 +296,23 @@
       SystemDictionary::roots_oops_do(strong_roots, weak_roots);
     }
   }
+}
 
-  {
-    G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::StringTableRoots, worker_i);
-    // All threads execute the following. A specific chunk of buckets
-    // from the StringTable are the individual tasks.
-    if (weak_roots != NULL) {
-      StringTable::possibly_parallel_oops_do(weak_roots);
-    }
+void G1RootProcessor::process_string_table_roots(G1RootClosures* closures,
+                                                 G1GCPhaseTimes* phase_times,
+                                                 uint worker_i) {
+  assert(closures->weak_oops() != NULL, "Should only be called when all roots are processed");
+  G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::StringTableRoots, worker_i);
+  // All threads execute the following. A specific chunk of buckets
+  // from the StringTable are the individual tasks.
+  StringTable::possibly_parallel_oops_do(closures->weak_oops());
+}
+
+void G1RootProcessor::process_code_cache_roots(CodeBlobClosure* code_closure,
+                                               G1GCPhaseTimes* phase_times,
+                                               uint worker_i) {
+  if (!_process_strong_tasks.is_task_claimed(G1RP_PS_CodeCache_oops_do)) {
+    CodeCache::blobs_do(code_closure);
   }
 }
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/g1/g1RootProcessor.hpp
--- a/hotspot/src/share/vm/gc/g1/g1RootProcessor.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1RootProcessor.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -73,6 +73,11 @@
   void worker_has_discovered_all_strong_classes();
   void wait_until_all_strong_classes_discovered();
 
+  void process_all_roots(OopClosure* oops,
+                         CLDClosure* clds,
+                         CodeBlobClosure* blobs,
+                         bool process_string_table);
+
   void process_java_roots(G1RootClosures* closures,
                           G1GCPhaseTimes* phase_times,
                           uint worker_i);
@@ -81,6 +86,14 @@
                         G1GCPhaseTimes* phase_times,
                         uint worker_i);
 
+  void process_string_table_roots(G1RootClosures* closures,
+                                  G1GCPhaseTimes* phase_times,
+                                  uint worker_i);
+
+  void process_code_cache_roots(CodeBlobClosure* code_closure,
+                                G1GCPhaseTimes* phase_times,
+                                uint worker_i);
+
 public:
   G1RootProcessor(G1CollectedHeap* g1h, uint n_workers);
 
@@ -99,6 +112,13 @@
                          CLDClosure* clds,
                          CodeBlobClosure* blobs);
 
+  // Apply oops, clds and blobs to strongly and weakly reachable roots in the system,
+  // the only thing different from process_all_roots is that we skip the string table
+  // to avoid keeping every string live when doing class unloading.
+  void process_all_roots_no_string_table(OopClosure* oops,
+                                         CLDClosure* clds,
+                                         CodeBlobClosure* blobs);
+
   // Number of worker threads used by the root processor.
   uint n_workers() const;
 };
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/g1/heapRegionManager.cpp
--- a/hotspot/src/share/vm/gc/g1/heapRegionManager.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/g1/heapRegionManager.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -123,6 +123,7 @@
   for (uint i = start; i < start + num_regions; i++) {
     if (_regions.get_by_index(i) == NULL) {
       HeapRegion* new_hr = new_heap_region(i);
+      OrderAccess::storestore();
       _regions.set_by_index(i, new_hr);
       _allocated_heapregions_length = MAX2(_allocated_heapregions_length, i + 1);
     }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/shared/gcTrace.cpp
--- a/hotspot/src/share/vm/gc/shared/gcTrace.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/shared/gcTrace.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -185,8 +185,10 @@
 }
 
 #if INCLUDE_ALL_GCS
-void G1MMUTracer::report_mmu(double timeSlice, double gcTime, double maxTime) {
-  send_g1_mmu_event(timeSlice, gcTime, maxTime);
+void G1MMUTracer::report_mmu(double time_slice_sec, double gc_time_sec, double max_time_sec) {
+  send_g1_mmu_event(time_slice_sec * MILLIUNITS,
+                    gc_time_sec * MILLIUNITS,
+                    max_time_sec * MILLIUNITS);
 }
 
 void G1NewTracer::report_yc_type(G1YCType type) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/shared/gcTrace.hpp
--- a/hotspot/src/share/vm/gc/shared/gcTrace.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/shared/gcTrace.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -235,10 +235,10 @@
 
 #if INCLUDE_ALL_GCS
 class G1MMUTracer : public AllStatic {
-  static void send_g1_mmu_event(double timeSlice, double gcTime, double maxTime);
+  static void send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms);
 
  public:
-  static void report_mmu(double timeSlice, double gcTime, double maxTime);
+  static void report_mmu(double time_slice_sec, double gc_time_sec, double max_time_sec);
 };
 
 class G1NewTracer : public YoungGCTracer {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/shared/gcTraceSend.cpp
--- a/hotspot/src/share/vm/gc/shared/gcTraceSend.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/shared/gcTraceSend.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -200,13 +200,13 @@
   }
 }
 
-void G1MMUTracer::send_g1_mmu_event(double timeSlice, double gcTime, double maxTime) {
+void G1MMUTracer::send_g1_mmu_event(double time_slice_ms, double gc_time_ms, double max_time_ms) {
   EventG1MMU e;
   if (e.should_commit()) {
     e.set_gcId(GCId::current());
-    e.set_timeSlice(timeSlice);
-    e.set_gcTime(gcTime);
-    e.set_maxGcTime(maxTime);
+    e.set_timeSlice(time_slice_ms);
+    e.set_gcTime(gc_time_ms);
+    e.set_pauseTarget(max_time_ms);
     e.commit();
   }
 }
@@ -281,10 +281,10 @@
     evt.set_targetOccupancy(target_occupancy);
     evt.set_thresholdPercentage(target_occupancy > 0 ? ((double)threshold / target_occupancy) : 0.0);
     evt.set_currentOccupancy(current_occupancy);
-    evt.set_lastAllocationSize(last_allocation_size);
-    evt.set_lastAllocationDuration(last_allocation_duration);
-    evt.set_lastAllocationRate(last_allocation_duration != 0.0 ? last_allocation_size / last_allocation_duration : 0.0);
-    evt.set_lastMarkingLength(last_marking_length);
+    evt.set_recentMutatorAllocationSize(last_allocation_size);
+    evt.set_recentMutatorDuration(last_allocation_duration * MILLIUNITS);
+    evt.set_recentAllocationRate(last_allocation_duration != 0.0 ? last_allocation_size / last_allocation_duration : 0.0);
+    evt.set_lastMarkingDuration(last_marking_length * MILLIUNITS);
     evt.commit();
   }
 }
@@ -301,11 +301,11 @@
     evt.set_gcId(GCId::current());
     evt.set_threshold(threshold);
     evt.set_thresholdPercentage(internal_target_occupancy > 0 ? ((double)threshold / internal_target_occupancy) : 0.0);
-    evt.set_internalTargetOccupancy(internal_target_occupancy);
+    evt.set_ihopTargetOccupancy(internal_target_occupancy);
     evt.set_currentOccupancy(current_occupancy);
     evt.set_additionalBufferSize(additional_buffer_size);
     evt.set_predictedAllocationRate(predicted_allocation_rate);
-    evt.set_predictedMarkingLength(predicted_marking_length);
+    evt.set_predictedMarkingDuration(predicted_marking_length * MILLIUNITS);
     evt.set_predictionActive(prediction_active);
     evt.commit();
   }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/gc/shared/workerManager.hpp
--- a/hotspot/src/share/vm/gc/shared/workerManager.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/gc/shared/workerManager.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.
+ * 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
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/interpreter/interpreterRuntime.cpp
--- a/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -576,27 +576,39 @@
   // compute auxiliary field attributes
   TosState state  = as_TosState(info.field_type());
 
-  // Put instructions on final fields are not resolved. This is required so we throw
-  // exceptions at the correct place (when the instruction is actually invoked).
+  // Resolution of put instructions on final fields is delayed. That is required so that
+  // exceptions are thrown at the correct place (when the instruction is actually invoked).
   // If we do not resolve an instruction in the current pass, leaving the put_code
   // set to zero will cause the next put instruction to the same field to reresolve.
+
+  // Resolution of put instructions to final instance fields with invalid updates (i.e.,
+  // to final instance fields with updates originating from a method different than <init>)
+  // is inhibited. A putfield instruction targeting an instance final field must throw
+  // an IllegalAccessError if the instruction is not in an instance
+  // initializer method <init>. If resolution were not inhibited, a putfield
+  // in an initializer method could be resolved in the initializer. Subsequent
+  // putfield instructions to the same field would then use cached information.
+  // As a result, those instructions would not pass through the VM. That is,
+  // checks in resolve_field_access() would not be executed for those instructions
+  // and the required IllegalAccessError would not be thrown.
   //
   // Also, we need to delay resolving getstatic and putstatic instructions until the
   // class is initialized.  This is required so that access to the static
   // field will call the initialization function every time until the class
   // is completely initialized ala. in 2.17.5 in JVM Specification.
   InstanceKlass* klass = InstanceKlass::cast(info.field_holder());
-  bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) &&
-                               !klass->is_initialized());
-
-  Bytecodes::Code put_code = (Bytecodes::Code)0;
-  if (is_put && !info.access_flags().is_final() && !uninitialized_static) {
-    put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield);
-  }
+  bool uninitialized_static = is_static && !klass->is_initialized();
+  bool has_initialized_final_update = info.field_holder()->major_version() >= 53 &&
+                                      info.has_initialized_final_update();
+  assert(!(has_initialized_final_update && !info.access_flags().is_final()), "Fields with initialized final updates must be final");
 
   Bytecodes::Code get_code = (Bytecodes::Code)0;
+  Bytecodes::Code put_code = (Bytecodes::Code)0;
   if (!uninitialized_static) {
     get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield);
+    if ((is_put && !has_initialized_final_update) || !info.access_flags().is_final()) {
+      put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield);
+    }
   }
 
   cp_cache_entry->set_field(
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/jvmci/jvmciCompilerToVM.cpp
--- a/hotspot/src/share/vm/jvmci/jvmciCompilerToVM.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/jvmci/jvmciCompilerToVM.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -768,6 +768,11 @@
   Symbol* h_name      = method->name();
   Symbol* h_signature = method->signature();
 
+  if (MethodHandles::is_signature_polymorphic_method(method())) {
+      // Signature polymorphic methods are already resolved, JVMCI just returns NULL in this case.
+      return NULL;
+  }
+
   LinkInfo link_info(h_resolved, h_name, h_signature, caller_klass);
   methodHandle m;
   // Only do exact lookup if receiver klass has been linked.  Otherwise,
@@ -782,7 +787,7 @@
   }
 
   if (m.is_null()) {
-    // Return NULL only if there was a problem with lookup (uninitialized class, etc.)
+    // Return NULL if there was a problem with lookup (uninitialized class, etc.)
     return NULL;
   }
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/jvmci/jvmciRuntime.cpp
--- a/hotspot/src/share/vm/jvmci/jvmciRuntime.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/jvmci/jvmciRuntime.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -313,13 +313,18 @@
     // normal bytecode execution.
     thread->clear_exception_oop_and_pc();
 
-    continuation = SharedRuntime::compute_compiled_exc_handler(cm, pc, exception, false, false);
+    bool recursive_exception = false;
+    continuation = SharedRuntime::compute_compiled_exc_handler(cm, pc, exception, false, false, recursive_exception);
     // If an exception was thrown during exception dispatch, the exception oop may have changed
     thread->set_exception_oop(exception());
     thread->set_exception_pc(pc);
 
     // the exception cache is used only by non-implicit exceptions
-    if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) {
+    // Update the exception cache only when there didn't happen
+    // another exception during the computation of the compiled
+    // exception handler. Checking for exception oop equality is not
+    // sufficient because some exceptions are pre-allocated and reused.
+    if (continuation != NULL && !recursive_exception && !SharedRuntime::deopt_blob()->contains(continuation)) {
       cm->add_handler_for_exception_and_pc(exception, pc, continuation);
     }
   }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/oops/klass.cpp
--- a/hotspot/src/share/vm/oops/klass.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/oops/klass.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -431,6 +431,12 @@
     if (clean_alive_klasses && current->is_instance_klass()) {
       InstanceKlass* ik = InstanceKlass::cast(current);
       ik->clean_weak_instanceklass_links(is_alive);
+
+      // JVMTI RedefineClasses creates previous versions that are not in
+      // the class hierarchy, so process them here.
+      while ((ik = ik->previous_versions()) != NULL) {
+        ik->clean_weak_instanceklass_links(is_alive);
+      }
     }
   }
 }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/opto/graphKit.cpp
--- a/hotspot/src/share/vm/opto/graphKit.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/opto/graphKit.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -2172,10 +2172,9 @@
       java_bc() == Bytecodes::_instanceof ||
       java_bc() == Bytecodes::_aastore) {
     ciProfileData* data = method()->method_data()->bci_to_data(bci());
-    bool maybe_null = data == NULL ? true : data->as_BitData()->null_seen();
+    maybe_null = data == NULL ? true : data->as_BitData()->null_seen();
   }
   return record_profile_for_speculation(n, exact_kls, maybe_null);
-  return n;
 }
 
 /**
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/opto/library_call.cpp
--- a/hotspot/src/share/vm/opto/library_call.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/opto/library_call.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -2475,6 +2475,28 @@
       // load value
       switch (type) {
       case T_BOOLEAN:
+      {
+        // Normalize the value returned by getBoolean in the following cases
+        if (mismatched ||
+            heap_base_oop == top() ||                            // - heap_base_oop is NULL or
+            (can_access_non_heap && alias_type->field() == NULL) // - heap_base_oop is potentially NULL
+                                                                 //   and the unsafe access is made to large offset
+                                                                 //   (i.e., larger than the maximum offset necessary for any
+                                                                 //   field access)
+            ) {
+          IdealKit ideal = IdealKit(this);
+#define __ ideal.
+          IdealVariable normalized_result(ideal);
+          __ declarations_done();
+          __ set(normalized_result, p);
+          __ if_then(p, BoolTest::ne, ideal.ConI(0));
+          __ set(normalized_result, ideal.ConI(1));
+          ideal.end_if();
+          final_sync(ideal);
+          p = __ value(normalized_result);
+#undef __
+        }
+      }
       case T_CHAR:
       case T_BYTE:
       case T_SHORT:
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/opto/runtime.cpp
--- a/hotspot/src/share/vm/opto/runtime.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/opto/runtime.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1349,17 +1349,23 @@
         force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc);
 
       if (handler_address == NULL) {
-        Handle original_exception(thread, exception());
-        handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true);
+        bool recursive_exception = false;
+        handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true, recursive_exception);
         assert (handler_address != NULL, "must have compiled handler");
         // Update the exception cache only when the unwind was not forced
         // and there didn't happen another exception during the computation of the
-        // compiled exception handler.
-        if (!force_unwind && original_exception() == exception()) {
+        // compiled exception handler. Checking for exception oop equality is not
+        // sufficient because some exceptions are pre-allocated and reused.
+        if (!force_unwind && !recursive_exception) {
           nm->add_handler_for_exception_and_pc(exception,pc,handler_address);
         }
       } else {
-        assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same");
+#ifdef ASSERT
+        bool recursive_exception = false;
+        address computed_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true, recursive_exception);
+        vmassert(recursive_exception || (handler_address == computed_address), "Handler address inconsistency: " PTR_FORMAT " != " PTR_FORMAT,
+                 p2i(handler_address), p2i(computed_address));
+#endif
       }
     }
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/jvm.h
--- a/hotspot/src/share/vm/prims/jvm.h	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/prims/jvm.h	Thu Sep 22 18:32:20 2016 +0000
@@ -196,7 +196,8 @@
  * java.lang.StackWalker
  */
 enum {
-  JVM_STACKWALK_FILL_CLASS_REFS_ONLY       = 0x2,
+  JVM_STACKWALK_FILL_CLASS_REFS_ONLY       = 0x02,
+  JVM_STACKWALK_GET_CALLER_CLASS           = 0x04,
   JVM_STACKWALK_SHOW_HIDDEN_FRAMES         = 0x20,
   JVM_STACKWALK_FILL_LIVE_STACK_FRAMES     = 0x100
 };
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/jvmtiEventController.cpp
--- a/hotspot/src/share/vm/prims/jvmtiEventController.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/prims/jvmtiEventController.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -96,7 +96,7 @@
 static const jlong  THREAD_FILTERED_EVENT_BITS = INTERP_EVENT_BITS | EXCEPTION_BITS | MONITOR_BITS |
                                         BREAKPOINT_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | THREAD_END_BIT;
 static const jlong  NEED_THREAD_LIFE_EVENTS = THREAD_FILTERED_EVENT_BITS | THREAD_START_BIT;
-static const jlong  EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT |
+static const jlong  EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT |
                                VM_START_BIT | VM_INIT_BIT | VM_DEATH_BIT | NATIVE_METHOD_BIND_BIT |
                                THREAD_START_BIT | THREAD_END_BIT |
                                COMPILED_METHOD_LOAD_BIT | COMPILED_METHOD_UNLOAD_BIT |
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/jvmtiExport.cpp
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/stackwalk.cpp
--- a/hotspot/src/share/vm/prims/stackwalk.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/prims/stackwalk.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -113,7 +113,10 @@
     int bci = stream.bci();
 
     if (method == NULL) continue;
-    if (!ShowHiddenFrames && StackWalk::skip_hidden_frames(mode)) {
+
+    // skip hidden frames for default StackWalker option (i.e. SHOW_HIDDEN_FRAMES
+    // not set) and when StackWalker::getCallerClass is called
+    if (!ShowHiddenFrames && (skip_hidden_frames(mode) || get_caller_class(mode))) {
       if (method->is_hidden()) {
         if (TraceStackWalk) {
           tty->print("  hidden method: "); method->print_short_name();
@@ -139,7 +142,14 @@
       Handle stackFrame(frames_array->obj_at(index));
       fill_stackframe(stackFrame, method, bci);
     } else {
-      assert (use_frames_array(mode) == false, "Bad mode for get caller class");
+      assert (use_frames_array(mode) == false, "Bad mode for filling in Class object");
+      if (get_caller_class(mode) && index == start_index && method->caller_sensitive()) {
+        ResourceMark rm(THREAD);
+        THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(),
+          err_msg("StackWalker::getCallerClass called from @CallerSensitive %s method",
+                  method->name_and_sig_as_C_string()));
+      }
+
       frames_array->obj_at_put(index, method->method_holder()->java_mirror());
     }
     if (++frames_decoded >= max_nframes)  break;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/stackwalk.hpp
--- a/hotspot/src/share/vm/prims/stackwalk.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/prims/stackwalk.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -82,6 +82,9 @@
   static void fill_live_stackframe(Handle stackFrame, const methodHandle& method, int bci,
                                    javaVFrame* jvf, TRAPS);
 
+  static inline bool get_caller_class(int mode) {
+    return (mode & JVM_STACKWALK_GET_CALLER_CLASS) != 0;
+  }
   static inline bool skip_hidden_frames(int mode) {
     return (mode & JVM_STACKWALK_SHOW_HIDDEN_FRAMES) == 0;
   }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/unsafe.cpp
--- a/hotspot/src/share/vm/prims/unsafe.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/prims/unsafe.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -150,14 +150,23 @@
   }
 
   template <typename T>
-  T normalize(T x) {
+  T normalize_for_write(T x) {
     return x;
   }
 
-  jboolean normalize(jboolean x) {
+  jboolean normalize_for_write(jboolean x) {
     return x & 1;
   }
 
+  template <typename T>
+  T normalize_for_read(T x) {
+    return x;
+  }
+
+  jboolean normalize_for_read(jboolean x) {
+    return x != 0;
+  }
+
   /**
    * Helper class to wrap memory accesses in JavaThread::doing_unsafe_access()
    */
@@ -196,7 +205,7 @@
 
     T* p = (T*)addr();
 
-    T x = *p;
+    T x = normalize_for_read(*p);
 
     return x;
   }
@@ -207,7 +216,7 @@
 
     T* p = (T*)addr();
 
-    *p = normalize(x);
+    *p = normalize_for_write(x);
   }
 
 
@@ -223,7 +232,7 @@
 
     T x = OrderAccess::load_acquire((volatile T*)p);
 
-    return x;
+    return normalize_for_read(x);
   }
 
   template <typename T>
@@ -232,7 +241,7 @@
 
     T* p = (T*)addr();
 
-    OrderAccess::release_store_fence((volatile T*)p, normalize(x));
+    OrderAccess::release_store_fence((volatile T*)p, normalize_for_write(x));
   }
 
 
@@ -256,7 +265,7 @@
 
     jlong* p = (jlong*)addr();
 
-    Atomic::store(normalize(x),  p);
+    Atomic::store(normalize_for_write(x),  p);
   }
 #endif
 };
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/whitebox.cpp
--- a/hotspot/src/share/vm/prims/whitebox.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/prims/whitebox.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -894,6 +894,7 @@
   }
   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
   const char* flag_name = env->GetStringUTFChars(name, NULL);
+  CHECK_JNI_EXCEPTION_(env, false);
   Flag::Error result = (*TAt)(flag_name, value, true, true);
   env->ReleaseStringUTFChars(name, flag_name);
   return (result == Flag::SUCCESS);
@@ -906,6 +907,7 @@
   }
   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
   const char* flag_name = env->GetStringUTFChars(name, NULL);
+  CHECK_JNI_EXCEPTION_(env, false);
   Flag::Error result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
   env->ReleaseStringUTFChars(name, flag_name);
   return (result == Flag::SUCCESS);
@@ -944,6 +946,7 @@
 static Flag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
   const char* flag_name = env->GetStringUTFChars(name, NULL);
+  CHECK_JNI_EXCEPTION_(env, NULL);
   Flag* result = Flag::find_flag(flag_name, strlen(flag_name), true, true);
   env->ReleaseStringUTFChars(name, flag_name);
   return result;
@@ -1084,7 +1087,14 @@
 
 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
   ThreadToNativeFromVM ttnfv(thread);   // can't be in VM when we call JNI
-  const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
+  const char* ccstrValue;
+  if (value == NULL) {
+    ccstrValue = NULL;
+  }
+  else {
+    ccstrValue = env->GetStringUTFChars(value, NULL);
+    CHECK_JNI_EXCEPTION(env);
+  }
   ccstr ccstrResult = ccstrValue;
   bool needFree;
   {
@@ -1308,6 +1318,7 @@
   jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
   CHECK_JNI_EXCEPTION_(env, NULL);
   result = env->NewObjectArray(blobs.length(), clazz, NULL);
+  CHECK_JNI_EXCEPTION_(env, NULL);
   if (result == NULL) {
     return result;
   }
@@ -1317,6 +1328,7 @@
     jobjectArray obj = codeBlob2objectArray(thread, env, *it);
     CHECK_JNI_EXCEPTION_(env, NULL);
     env->SetObjectArrayElement(result, i, obj);
+    CHECK_JNI_EXCEPTION_(env, NULL);
     ++i;
   }
   return result;
@@ -1523,6 +1535,7 @@
   // can't be in VM when we call JNI
   ThreadToNativeFromVM ttnfv(thread);
   const char* flag_name = env->GetStringUTFChars(name, NULL);
+  CHECK_JNI_EXCEPTION_(env, false);
   bool result =  CompilerOracle::has_option_value(mh, flag_name, *value);
   env->ReleaseStringUTFChars(name, flag_name);
   return result;
@@ -1678,6 +1691,7 @@
   // can't be in VM when we call JNI
   ThreadToNativeFromVM ttnfv(thread);
   const char* dir = env->GetStringUTFChars(compDirect, NULL);
+  CHECK_JNI_EXCEPTION_(env, 0);
   int ret;
   {
     ThreadInVMfromNative ttvfn(thread); // back to VM
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/prims/whitebox.hpp
--- a/hotspot/src/share/vm/prims/whitebox.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/prims/whitebox.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -33,9 +33,22 @@
 #include "oops/symbol.hpp"
 #include "runtime/interfaceSupport.hpp"
 
+// Unconditionally clear pedantic pending JNI checks
+class ClearPendingJniExcCheck : public StackObj {
+private:
+  JavaThread* _thread;
+public:
+  ClearPendingJniExcCheck(JNIEnv* env) : _thread(JavaThread::thread_from_jni_environment(env)) {}
+  ~ClearPendingJniExcCheck() {
+    _thread->clear_pending_jni_exception_check();
+  }
+};
+
 // Entry macro to transition from JNI to VM state.
 
-#define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header)
+#define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header) \
+  ClearPendingJniExcCheck _clearCheck(env);
+
 #define WB_END JNI_END
 #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/runtime/arguments.cpp
--- a/hotspot/src/share/vm/runtime/arguments.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/runtime/arguments.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1308,35 +1308,13 @@
   return true;
 }
 
-// sets or adds a module name to the jdk.module.addmods property
-bool Arguments::append_to_addmods_property(const char* module_name) {
-  const char* key = "jdk.module.addmods";
-  const char* old_value = Arguments::get_property(key);
-  size_t buf_len = strlen(key) + strlen(module_name) + 2;
-  if (old_value != NULL) {
-    buf_len += strlen(old_value) + 1;
-  }
-  char* new_value = AllocateHeap(buf_len, mtArguments);
-  if (new_value == NULL) {
-    return false;
-  }
-  if (old_value == NULL) {
-    jio_snprintf(new_value, buf_len, "%s=%s", key, module_name);
-  } else {
-    jio_snprintf(new_value, buf_len, "%s=%s,%s", key, old_value, module_name);
-  }
-  bool added = add_property(new_value, UnwriteableProperty, InternalProperty);
-  FreeHeap(new_value);
-  return added;
-}
-
 #if INCLUDE_CDS
 void Arguments::check_unsupported_dumping_properties() {
   assert(DumpSharedSpaces, "this function is only used with -Xshare:dump");
   const char* unsupported_properties[5] = { "jdk.module.main",
                                            "jdk.module.path",
                                            "jdk.module.upgrade.path",
-                                           "jdk.module.addmods",
+                                           "jdk.module.addmods.0",
                                            "jdk.module.limitmods" };
   const char* unsupported_options[5] = { "-m",
                                         "--module-path",
@@ -1687,11 +1665,6 @@
     CompactibleFreeListSpaceLAB::modify_initialization(OldPLABSize, OldPLABWeight);
   }
 
-  if (!ClassUnloading) {
-    FLAG_SET_CMDLINE(bool, CMSClassUnloadingEnabled, false);
-    FLAG_SET_CMDLINE(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false);
-  }
-
   log_trace(gc)("MarkStackSize: %uk  MarkStackSizeMax: %uk", (unsigned int) (MarkStackSize / K), (uint) (MarkStackSizeMax / K));
 }
 #endif // INCLUDE_ALL_GCS
@@ -2019,6 +1992,13 @@
     // Keeping the heap 100% free is hard ;-) so limit it to 99%.
     FLAG_SET_ERGO(uintx, MinHeapFreeRatio, 99);
   }
+
+  // If class unloading is disabled, also disable concurrent class unloading.
+  if (!ClassUnloading) {
+    FLAG_SET_CMDLINE(bool, CMSClassUnloadingEnabled, false);
+    FLAG_SET_CMDLINE(bool, ClassUnloadingWithConcurrentMark, false);
+    FLAG_SET_CMDLINE(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false);
+  }
 #endif // INCLUDE_ALL_GCS
 }
 
@@ -2566,8 +2546,8 @@
 
 unsigned int addreads_count = 0;
 unsigned int addexports_count = 0;
+unsigned int addmods_count = 0;
 unsigned int patch_mod_count = 0;
-const char* add_modules_value = NULL;
 
 bool Arguments::create_property(const char* prop_name, const char* prop_value, PropertyInternal internal) {
   size_t prop_len = strlen(prop_name) + strlen(prop_value) + 2;
@@ -2821,7 +2801,9 @@
         return JNI_ENOMEM;
       }
     } else if (match_option(option, "--add-modules=", &tail)) {
-      add_modules_value = tail;
+      if (!create_numbered_property("jdk.module.addmods", tail, addmods_count++)) {
+        return JNI_ENOMEM;
+      }
     } else if (match_option(option, "--limit-modules=", &tail)) {
       if (!create_property("jdk.module.limitmods", tail, InternalProperty)) {
         return JNI_ENOMEM;
@@ -2873,7 +2855,7 @@
         char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtArguments), tail);
         add_init_agent("instrument", options, false);
         // java agents need module java.instrument
-        if (!Arguments::append_to_addmods_property("java.instrument")) {
+        if (!create_numbered_property("jdk.module.addmods", "java.instrument", addmods_count++)) {
           return JNI_ENOMEM;
         }
       }
@@ -3149,7 +3131,7 @@
           return JNI_EINVAL;
         }
         // management agent in module java.management
-        if (!Arguments::append_to_addmods_property("java.management")) {
+        if (!create_numbered_property("jdk.module.addmods", "java.management", addmods_count++)) {
           return JNI_ENOMEM;
         }
 #else
@@ -3560,15 +3542,6 @@
     return JNI_ERR;
   }
 
-  // Append the value of the last --add-modules option specified on the command line.
-  // This needs to be done here, to prevent overwriting possible values written
-  // to the jdk.module.addmods property by -javaagent and other options.
-  if (add_modules_value != NULL) {
-    if (!append_to_addmods_property(add_modules_value)) {
-      return JNI_ENOMEM;
-    }
-  }
-
   // This must be done after all arguments have been processed.
   // java_compiler() true means set to "NONE" or empty.
   if (java_compiler() && !xdebug_mode()) {
@@ -3617,7 +3590,8 @@
 #endif
 
 #if INCLUDE_JVMCI
-  if (EnableJVMCI && !append_to_addmods_property("jdk.vm.ci")) {
+  if (EnableJVMCI &&
+      !create_numbered_property("jdk.module.addmods", "jdk.vm.ci", addmods_count++)) {
     return JNI_ENOMEM;
   }
 #endif
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/runtime/arguments.hpp
--- a/hotspot/src/share/vm/runtime/arguments.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/runtime/arguments.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -489,9 +489,6 @@
 
   static int process_patch_mod_option(const char* patch_mod_tail, bool* patch_mod_javabase);
 
-  // Miscellaneous system property setter
-  static bool append_to_addmods_property(const char* module_name);
-
   // Aggressive optimization flags.
   static jint set_aggressive_opts_flags();
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/runtime/interfaceSupport.hpp
--- a/hotspot/src/share/vm/runtime/interfaceSupport.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/runtime/interfaceSupport.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -280,6 +280,7 @@
 
   ~ThreadToNativeFromVM() {
     trans_from_native(_thread_in_vm);
+    assert(!_thread->is_pending_jni_exception_check(), "Pending JNI Exception Check");
     // We don't need to clear_walkable because it will happen automagically when we return to java
   }
 };
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/runtime/os.hpp
--- a/hotspot/src/share/vm/runtime/os.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/runtime/os.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -443,7 +443,7 @@
 
   static bool create_thread(Thread* thread,
                             ThreadType thr_type,
-                            size_t stack_size = 0);
+                            size_t req_stack_size = 0);
   static bool create_main_thread(JavaThread* thread);
   static bool create_attached_thread(JavaThread* thread);
   static void pd_start_thread(Thread* thread);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/runtime/sharedRuntime.cpp
--- a/hotspot/src/share/vm/runtime/sharedRuntime.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/runtime/sharedRuntime.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -621,7 +621,7 @@
 // ret_pc points into caller; we are returning caller's exception handler
 // for given exception
 address SharedRuntime::compute_compiled_exc_handler(CompiledMethod* cm, address ret_pc, Handle& exception,
-                                                    bool force_unwind, bool top_frame_only) {
+                                                    bool force_unwind, bool top_frame_only, bool& recursive_exception_occurred) {
   assert(cm != NULL, "must exist");
   ResourceMark rm;
 
@@ -677,6 +677,7 @@
         // BCI of the exception handler which caused the exception to be
         // thrown (bugs 4307310 and 4546590). Set "exception" reference
         // argument to ensure that the correct exception is thrown (4870175).
+        recursive_exception_occurred = true;
         exception = Handle(THREAD, PENDING_EXCEPTION);
         CLEAR_PENDING_EXCEPTION;
         if (handler_bci >= 0) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/runtime/sharedRuntime.hpp
--- a/hotspot/src/share/vm/runtime/sharedRuntime.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/runtime/sharedRuntime.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -189,7 +189,7 @@
 
   // exception handling and implicit exceptions
   static address compute_compiled_exc_handler(CompiledMethod* nm, address ret_pc, Handle& exception,
-                                              bool force_unwind, bool top_frame_only);
+                                              bool force_unwind, bool top_frame_only, bool& recursive_exception_occurred);
   enum ImplicitExceptionKind {
     IMPLICIT_NULL,
     IMPLICIT_DIVIDE_BY_ZERO,
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/runtime/thread.hpp
--- a/hotspot/src/share/vm/runtime/thread.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/runtime/thread.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -1542,6 +1542,9 @@
   static ByteSize jmp_ring_offset()              { return byte_offset_of(JavaThread, _jmp_ring); }
 #endif // PRODUCT
   static ByteSize jni_environment_offset()       { return byte_offset_of(JavaThread, _jni_environment); }
+  static ByteSize pending_jni_exception_check_fn_offset() {
+    return byte_offset_of(JavaThread, _pending_jni_exception_check_fn);
+  }
   static ByteSize last_Java_sp_offset() {
     return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_sp_offset();
   }
@@ -1615,7 +1618,11 @@
     assert(_jni_active_critical >= 0, "JNI critical nesting problem?");
   }
 
-  // Checked JNI, is the programmer required to check for exceptions, specify which function name
+  // Checked JNI: is the programmer required to check for exceptions, if so specify
+  // which function name. Returning to a Java frame should implicitly clear the
+  // pending check, this is done for Native->Java transitions (i.e. user JNI code).
+  // VM->Java transistions are not cleared, it is expected that JNI code enclosed
+  // within ThreadToNativeFromVM makes proper exception checks (i.e. VM internal).
   bool is_pending_jni_exception_check() const { return _pending_jni_exception_check_fn != NULL; }
   void clear_pending_jni_exception_check() { _pending_jni_exception_check_fn = NULL; }
   const char* get_pending_jni_exception_check() const { return _pending_jni_exception_check_fn; }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/services/diagnosticCommand.cpp
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/trace/traceevents.xml
--- a/hotspot/src/share/vm/trace/traceevents.xml	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/trace/traceevents.xml	Thu Sep 22 18:32:20 2016 +0000
@@ -315,9 +315,9 @@
 
   <event id="G1MMU" path="vm/gc/detailed/g1_mmu_info" label="G1 MMU Information" is_instant="true">
     <value type="UINT" field="gcId" label="GC Identifier" relation="GcId"/>
-    <value type="DOUBLE" field="timeSlice" label="Time Slice" description="Time slice used to calculate MMU"/>
-    <value type="DOUBLE" field="gcTime" label="GC Time" description="Time spent on GC during last time slice"/>
-    <value type="DOUBLE" field="maxGcTime" label="Max GC Time" description="Max time allowed to be spent on GC during last time slice"/>
+    <value type="MILLIS" field="timeSlice" label="Time Slice" description="Time slice used to calculate MMU"/>
+    <value type="MILLIS" field="gcTime" label="GC Time" description="Time stopped because of GC during last time slice"/>
+    <value type="MILLIS" field="pauseTarget" label="Pause Target" description="Max time allowed to be spent on GC during last time slice"/>
   </event>
 
   <event id="EvacuationInformation" path="vm/gc/detailed/evacuation_info" label="Evacuation Information" is_instant="true">
@@ -377,29 +377,29 @@
     <structvalue type="G1EvacuationStatistics" field="statistics" label="Evacuation Statistics"/>
   </event>
 
-  <event id="G1BasicIHOP" path="vm/gc/detailed/g1_basic_ihop_status" label="G1 Basic IHOP statistics"
+  <event id="G1BasicIHOP" path="vm/gc/detailed/g1_basic_ihop_status" label="G1 Basic IHOP Statistics"
          is_instant="true" description="Basic statistics related to current IHOP calculation">
     <value type="UINT" field="gcId" label="GC Identifier" relation="GcId"/>
-    <value type="BYTES64" field="threshold" label="Current IHOP threshold" description="Current IHOP threshold in bytes"/>
-    <value type="PERCENTAGE" field="thresholdPercentage" label="Current IHOP threshold in percent" description="Current IHOP threshold in percent of old gen"/>
-    <value type="BYTES64" field="targetOccupancy" label="Target Occupancy" description="Target old gen occupancy to reach at the start of mixed GC in bytes"/>
-    <value type="BYTES64" field="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy in bytes"/>
-    <value type="BYTES64" field="lastAllocationSize" label="Last Mutator Allocation" description="Mutator allocation during mutator operation since last GC in bytes"/>
-    <value type="DOUBLE" field="lastAllocationDuration" label="Last Mutator Operation" description="Time the mutator ran since last GC in seconds"/>
-    <value type="DOUBLE" field="lastAllocationRate" label="Last Mutator Allocation Rate" description="Allocation rate of the mutator since last GC in bytes/second"/>
-    <value type="DOUBLE" field="lastMarkingLength" label="Last Marking Length" description="Last time from the end of the last initial mark to the first mixed GC in seconds"/>
+    <value type="BYTES64" field="threshold" label="Current IHOP Threshold" description="Current IHOP threshold"/>
+    <value type="PERCENTAGE" field="thresholdPercentage" label="Current IHOP Threshold" description="Current IHOP threshold in percent of old generation"/>
+    <value type="BYTES64" field="targetOccupancy" label="Target Occupancy" description="Target old generation occupancy to reach at the start of mixed GC"/>
+    <value type="BYTES64" field="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy"/>
+    <value type="BYTES64" field="recentMutatorAllocationSize" label="Recent Mutator Allocation Size" description="Mutator allocation during mutator operation in the most recent interval"/>
+    <value type="MILLIS" field="recentMutatorDuration" label="Recent Mutator Duration" description="Time the mutator ran in the most recent interval"/>
+    <value type="DOUBLE" field="recentAllocationRate" label="Recent Allocation Rate" description="Allocation rate of the mutator in the most recent interval in bytes/second"/>
+    <value type="MILLIS" field="lastMarkingDuration" label="Last Marking Duration" description="Last time from the end of the last initial mark to the first mixed GC"/>
   </event>
 
-  <event id="G1AdaptiveIHOP" path="vm/gc/detailed/g1_adaptive_ihop_status" label="G1 Adaptive IHOP statistics"
+  <event id="G1AdaptiveIHOP" path="vm/gc/detailed/g1_adaptive_ihop_status" label="G1 Adaptive IHOP Statistics"
          is_instant="true" description="Statistics related to current adaptive IHOP calculation">
     <value type="UINT" field="gcId" label="GC Identifier" relation="GcId"/>
-    <value type="BYTES64" field="threshold" label="Threshold" description="Current IHOP threshold in bytes"/>
-    <value type="PERCENTAGE" field="thresholdPercentage" label="Threshold Percentage" description="Current IHOP threshold in percent of the internal target occupancy"/>
-    <value type="BYTES64" field="internalTargetOccupancy" label="Target Occupancy" description="Internal target old generation occupancy to reach at the start of mixed GC in bytes"/>
-    <value type="BYTES64" field="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy in bytes"/>
-    <value type="BYTES64" field="additionalBufferSize" label="Additional Buffer" description="Additional buffer size in bytes"/>
+    <value type="BYTES64" field="threshold" label="Threshold" description="Current IHOP Threshold"/>
+    <value type="PERCENTAGE" field="thresholdPercentage" label="Threshold" description="Current IHOP threshold in percent of the internal target occupancy"/>
+    <value type="BYTES64" field="ihopTargetOccupancy" label="IHOP Target Occupancy" description="Internal target old generation occupancy to reach at the start of mixed GC"/>
+    <value type="BYTES64" field="currentOccupancy" label="Current Occupancy" description="Current old generation occupancy"/>
+    <value type="BYTES64" field="additionalBufferSize" label="Additional Buffer" description="Additional buffer size" experimental="true"/>
     <value type="DOUBLE" field="predictedAllocationRate" label="Predicted Allocation Rate" description="Current predicted allocation rate for the mutator in bytes/second"/>
-    <value type="DOUBLE" field="predictedMarkingLength" label="Predicted Marking Length" description="Current predicted time from the end of the last initial mark to the first mixed GC in seconds"/>
+    <value type="MILLIS" field="predictedMarkingDuration" label="Predicted Marking Duration" description="Current predicted time from the end of the last initial mark to the first mixed GC"/>
     <value type="BOOLEAN" field="predictionActive" label="Prediction Active" description="Indicates whether the adaptive IHOP prediction is active"/>
   </event>
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/utilities/exceptions.cpp
--- a/hotspot/src/share/vm/utilities/exceptions.cpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/utilities/exceptions.cpp	Thu Sep 22 18:32:20 2016 +0000
@@ -80,7 +80,7 @@
   if (h_exception()->klass() == SystemDictionary::StackOverflowError_klass()) {
     InstanceKlass* ik = InstanceKlass::cast(h_exception->klass());
     assert(ik->is_initialized(),
-           "need to increase min_stack_allowed calculation");
+           "need to increase java_thread_min_stack_allowed calculation");
   }
 #endif // ASSERT
 
@@ -227,7 +227,7 @@
     Klass* k = SystemDictionary::StackOverflowError_klass();
     oop e = InstanceKlass::cast(k)->allocate_instance(CHECK);
     exception = Handle(THREAD, e);  // fill_in_stack trace does gc
-    assert(InstanceKlass::cast(k)->is_initialized(), "need to increase min_stack_allowed calculation");
+    assert(InstanceKlass::cast(k)->is_initialized(), "need to increase java_thread_min_stack_allowed calculation");
     if (StackTraceInThrowable) {
       java_lang_Throwable::fill_in_stack_trace(exception, method());
     }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/src/share/vm/utilities/globalDefinitions_xlc.hpp
--- a/hotspot/src/share/vm/utilities/globalDefinitions_xlc.hpp	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/src/share/vm/utilities/globalDefinitions_xlc.hpp	Thu Sep 22 18:32:20 2016 +0000
@@ -186,6 +186,6 @@
 
 // Inlining support
 #define NOINLINE
-#define ALWAYSINLINE __attribute__((always_inline))
+#define ALWAYSINLINE inline __attribute__((always_inline))
 
 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/c2/Test6968348.java
--- a/hotspot/test/compiler/c2/Test6968348.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/c2/Test6968348.java	Thu Sep 22 18:32:20 2016 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 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
@@ -38,15 +38,11 @@
 import java.lang.reflect.Field;
 
 public class Test6968348 {
-    static Unsafe unsafe;
+    static Unsafe unsafe = Unsafe.getUnsafe();
     static final long[] buffer = new long[4096];
     static int array_long_base_offset;
 
     public static void main(String[] args) throws Exception {
-        Class c = Test6968348.class.getClassLoader().loadClass("jdk.internal.misc.Unsafe");
-        Field f = c.getDeclaredField("theUnsafe");
-        f.setAccessible(true);
-        unsafe = (Unsafe)f.get(c);
         array_long_base_offset = unsafe.arrayBaseOffset(long[].class);
 
         for (int n = 0; n < 100000; n++) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/c2/cr8004867/TestIntUnsafeCAS.java
--- a/hotspot/test/compiler/c2/cr8004867/TestIntUnsafeCAS.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/c2/cr8004867/TestIntUnsafeCAS.java	Thu Sep 22 18:32:20 2016 +0000
@@ -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
@@ -50,14 +50,10 @@
   private static final int ALIGN_OFF = 8;
   private static final int UNALIGN_OFF = 5;
 
-  private static final Unsafe unsafe;
+  private static final Unsafe unsafe = Unsafe.getUnsafe();
   private static final int BASE;
   static {
     try {
-      Class c = TestIntUnsafeCAS.class.getClassLoader().loadClass("jdk.internal.misc.Unsafe");
-      Field f = c.getDeclaredField("theUnsafe");
-      f.setAccessible(true);
-      unsafe = (Unsafe)f.get(c);
       BASE = unsafe.arrayBaseOffset(int[].class);
     } catch (Exception e) {
       InternalError err = new InternalError();
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/c2/cr8004867/TestIntUnsafeOrdered.java
--- a/hotspot/test/compiler/c2/cr8004867/TestIntUnsafeOrdered.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/c2/cr8004867/TestIntUnsafeOrdered.java	Thu Sep 22 18:32:20 2016 +0000
@@ -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
@@ -50,14 +50,10 @@
   private static final int ALIGN_OFF = 8;
   private static final int UNALIGN_OFF = 5;
 
-  private static final Unsafe unsafe;
+  private static final Unsafe unsafe = Unsafe.getUnsafe();
   private static final int BASE;
   static {
     try {
-      Class<?> c = Unsafe.class;
-      Field f = c.getDeclaredField("theUnsafe");
-      f.setAccessible(true);
-      unsafe = (Unsafe) f.get(c);
       BASE = unsafe.arrayBaseOffset(int[].class);
     } catch (Exception e) {
       InternalError err = new InternalError();
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/c2/cr8004867/TestIntUnsafeVolatile.java
--- a/hotspot/test/compiler/c2/cr8004867/TestIntUnsafeVolatile.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/c2/cr8004867/TestIntUnsafeVolatile.java	Thu Sep 22 18:32:20 2016 +0000
@@ -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
@@ -50,14 +50,10 @@
   private static final int ALIGN_OFF = 8;
   private static final int UNALIGN_OFF = 5;
 
-  private static final Unsafe unsafe;
+  private static final Unsafe unsafe = Unsafe.getUnsafe();
   private static final int BASE;
   static {
     try {
-      Class c = TestIntUnsafeVolatile.class.getClassLoader().loadClass("jdk.internal.misc.Unsafe");
-      Field f = c.getDeclaredField("theUnsafe");
-      f.setAccessible(true);
-      unsafe = (Unsafe)f.get(c);
       BASE = unsafe.arrayBaseOffset(int[].class);
     } catch (Exception e) {
       InternalError err = new InternalError();
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/codecache/OverflowCodeCacheTest.java
--- a/hotspot/test/compiler/codecache/OverflowCodeCacheTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/codecache/OverflowCodeCacheTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -75,6 +75,7 @@
         System.out.printf("type %s%n", type);
         System.out.println("allocating till possible...");
         ArrayList<Long> blobs = new ArrayList<>();
+        int compilationActivityMode = -1;
         try {
             long addr;
             int size = (int) (getHeapSize() >> 7);
@@ -88,13 +89,16 @@
                             type + " doesn't allow using " + actualType + " when overflow");
                 }
             }
-            Asserts.assertNotEquals(WHITE_BOX.getCompilationActivityMode(), 1 /* run_compilation*/,
-                    "Compilation must be disabled when CodeCache(CodeHeap) overflows");
+            /* now, remember compilationActivityMode to check it later, after freeing, since we
+               possibly have no free cache for futher work */
+            compilationActivityMode = WHITE_BOX.getCompilationActivityMode();
         } finally {
             for (Long blob : blobs) {
                 WHITE_BOX.freeCodeBlob(blob);
             }
         }
+        Asserts.assertNotEquals(compilationActivityMode, 1 /* run_compilation*/,
+                "Compilation must be disabled when CodeCache(CodeHeap) overflows");
     }
 
     private long getHeapSize() {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/cpuflags/AESIntrinsicsBase.java
--- a/hotspot/test/compiler/cpuflags/AESIntrinsicsBase.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/cpuflags/AESIntrinsicsBase.java	Thu Sep 22 18:32:20 2016 +0000
@@ -48,8 +48,8 @@
             = {"-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintIntrinsics"};
     public static final String[] TEST_AES_CMD
             = {"-XX:+IgnoreUnrecognizedVMOptions", "-XX:+PrintFlagsFinal",
-            "-Xbatch", "-DcheckOutput=true", "-Dmode=CBC",
-            TestAESMain.class.getName()};
+            "-Xbatch", "-XX:CompileThresholdScaling=0.01", "-DcheckOutput=true", "-Dmode=CBC",
+            TestAESMain.class.getName(), "100", "1000"};
 
     protected AESIntrinsicsBase(BooleanSupplier predicate) {
         super(predicate);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/cpuflags/TestAESIntrinsicsOnSupportedConfig.java
--- a/hotspot/test/compiler/cpuflags/TestAESIntrinsicsOnSupportedConfig.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/cpuflags/TestAESIntrinsicsOnSupportedConfig.java	Thu Sep 22 18:32:20 2016 +0000
@@ -27,11 +27,11 @@
  * @library /test/lib /
  * @modules java.base/jdk.internal.misc
  *          java.management
- * @ignore 8146128
  * @build sun.hotspot.WhiteBox
  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
- * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ * @run main/othervm/timeout=600 -Xbootclasspath/a:.
+ *                   -XX:+UnlockDiagnosticVMOptions
  *                   -XX:+WhiteBoxAPI -Xbatch
  *                   compiler.cpuflags.TestAESIntrinsicsOnSupportedConfig
  */
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/intrinsics/unsafe/TestUnsafeMismatchedArrayFieldAccess.java
--- a/hotspot/test/compiler/intrinsics/unsafe/TestUnsafeMismatchedArrayFieldAccess.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/intrinsics/unsafe/TestUnsafeMismatchedArrayFieldAccess.java	Thu Sep 22 18:32:20 2016 +0000
@@ -27,7 +27,6 @@
  * @bug 8142386
  * @summary Unsafe access to an array is wrongly marked as mismatched
  * @modules java.base/jdk.internal.misc
- * @library /test/lib
  *
  * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation
  *      compiler.intrinsics.unsafe.TestUnsafeMismatchedArrayFieldAccess
@@ -36,11 +35,10 @@
 package compiler.intrinsics.unsafe;
 
 import jdk.internal.misc.Unsafe;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 public class TestUnsafeMismatchedArrayFieldAccess {
 
-    private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+    private static final Unsafe UNSAFE = Unsafe.getUnsafe();
 
     static {
         try {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/jvmci/compilerToVM/ExecuteInstalledCodeTest.java
--- a/hotspot/test/compiler/jvmci/compilerToVM/ExecuteInstalledCodeTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/jvmci/compilerToVM/ExecuteInstalledCodeTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -19,7 +19,6 @@
  * @requires (vm.simpleArch == "x64" | vm.simpleArch == "sparcv9" | vm.simpleArch == "aarch64")
  * @library /test/lib /
  * @library ../common/patches
- * @ignore 8139383
  * @modules java.base/jdk.internal.misc
  * @modules java.base/jdk.internal.org.objectweb.asm
  *          java.base/jdk.internal.org.objectweb.asm.tree
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/jvmci/compilerToVM/GetResolvedJavaMethodTest.java
--- a/hotspot/test/compiler/jvmci/compilerToVM/GetResolvedJavaMethodTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/jvmci/compilerToVM/GetResolvedJavaMethodTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -45,7 +45,6 @@
 
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.vm.ci.hotspot.CompilerToVMHelper;
 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
 import jdk.vm.ci.hotspot.PublicMetaspaceWrapperObject;
@@ -114,7 +113,7 @@
         abstract HotSpotResolvedJavaMethod getResolvedJavaMethod();
     }
 
-    private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+    private static final Unsafe UNSAFE = Unsafe.getUnsafe();
     private static final WhiteBox WB = WhiteBox.getWhiteBox();
     private static final Field METASPACE_METHOD_FIELD;
     private static final Class<?> TEST_CLASS = GetResolvedJavaMethodTest.class;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/jvmci/compilerToVM/GetResolvedJavaTypeTest.java
--- a/hotspot/test/compiler/jvmci/compilerToVM/GetResolvedJavaTypeTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/jvmci/compilerToVM/GetResolvedJavaTypeTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -53,7 +53,6 @@
 
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.vm.ci.hotspot.CompilerToVMHelper;
 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
@@ -154,7 +153,7 @@
         abstract HotSpotResolvedObjectType getResolvedJavaType();
     }
 
-    private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+    private static final Unsafe UNSAFE = Unsafe.getUnsafe();
     private static final WhiteBox WB = WhiteBox.getWhiteBox();
     private static final Class TEST_CLASS = GetResolvedJavaTypeTest.class;
     /* a compressed parameter for tested method is set to false because
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/jvmci/compilerToVM/ResolveFieldInPoolTest.java
--- a/hotspot/test/compiler/jvmci/compilerToVM/ResolveFieldInPoolTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/jvmci/compilerToVM/ResolveFieldInPoolTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -53,7 +53,6 @@
 import jdk.internal.misc.Unsafe;
 import jdk.internal.org.objectweb.asm.Opcodes;
 import jdk.test.lib.Asserts;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.vm.ci.hotspot.CompilerToVMHelper;
 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
 import jdk.vm.ci.meta.ConstantPool;
@@ -69,7 +68,7 @@
  */
 public class ResolveFieldInPoolTest {
 
-    private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+    private static final Unsafe UNSAFE = Unsafe.getUnsafe();
 
     public static void main(String[] args) throws Exception {
         Map<ConstantTypes, Validator> typeTests = new HashMap<>();
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/jvmci/compilerToVM/ResolveMethodTest.java
--- a/hotspot/test/compiler/jvmci/compilerToVM/ResolveMethodTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/jvmci/compilerToVM/ResolveMethodTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -52,7 +52,6 @@
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
 import jdk.test.lib.Utils;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.vm.ci.hotspot.CompilerToVMHelper;
 import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
 import jdk.vm.ci.hotspot.HotSpotResolvedObjectType;
@@ -61,7 +60,7 @@
 import java.util.Set;
 
 public class ResolveMethodTest {
-    private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+    private static final Unsafe UNSAFE = Unsafe.getUnsafe();
 
     public static void main(String args[]) {
         ResolveMethodTest test = new ResolveMethodTest();
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestResolvedJavaType.java
--- a/hotspot/test/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestResolvedJavaType.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestResolvedJavaType.java	Thu Sep 22 18:32:20 2016 +0000
@@ -25,7 +25,6 @@
  * @test
  * @requires (vm.simpleArch == "x64" | vm.simpleArch == "sparcv9" | vm.simpleArch == "aarch64")
  * @library ../../../../../
- * @ignore 8161550
  * @modules java.base/jdk.internal.reflect
  *          jdk.vm.ci/jdk.vm.ci.meta
  *          jdk.vm.ci/jdk.vm.ci.runtime
@@ -74,11 +73,29 @@
 /**
  * Tests for {@link ResolvedJavaType}.
  */
+@SuppressWarnings("unchecked")
 public class TestResolvedJavaType extends TypeUniverse {
+    private static final Class<? extends Annotation> SIGNATURE_POLYMORPHIC_CLASS = findPolymorphicSignatureClass();
 
     public TestResolvedJavaType() {
     }
 
+    private static Class<? extends Annotation> findPolymorphicSignatureClass() {
+        Class<? extends Annotation> signaturePolyAnnotation = null;
+        try {
+            for (Class<?> clazz : TestResolvedJavaType.class.getClassLoader().loadClass("java.lang.invoke.MethodHandle").getDeclaredClasses()) {
+                if (clazz.getName().endsWith("PolymorphicSignature") && Annotation.class.isAssignableFrom(clazz)) {
+                    signaturePolyAnnotation = (Class<? extends Annotation>) clazz;
+                    break;
+                }
+            }
+        } catch (Throwable e) {
+            throw new AssertionError("Could not find annotation PolymorphicSignature in java.lang.invoke.MethodHandle", e);
+        }
+        assertNotNull(signaturePolyAnnotation);
+        return signaturePolyAnnotation;
+    }
+
     @Test
     public void findInstanceFieldWithOffsetTest() {
         for (Class<?> c : classes) {
@@ -577,8 +594,14 @@
                     for (Method decl : decls) {
                         ResolvedJavaMethod m = metaAccess.lookupJavaMethod(decl);
                         if (m.isPublic()) {
-                            ResolvedJavaMethod i = metaAccess.lookupJavaMethod(impl);
-                            assertEquals(m.toString(), i, type.resolveMethod(m, context));
+                            ResolvedJavaMethod resolvedmethod = type.resolveMethod(m, context);
+                            if (isSignaturePolymorphic(m)) {
+                                // Signature polymorphic methods must not be resolved
+                                assertNull(resolvedmethod);
+                            } else {
+                                ResolvedJavaMethod i = metaAccess.lookupJavaMethod(impl);
+                                assertEquals(m.toString(), i, resolvedmethod);
+                            }
                         }
                     }
                 }
@@ -606,8 +629,14 @@
                     for (Method decl : decls) {
                         ResolvedJavaMethod m = metaAccess.lookupJavaMethod(decl);
                         if (m.isPublic()) {
-                            ResolvedJavaMethod i = metaAccess.lookupJavaMethod(impl);
-                            assertEquals(i, type.resolveConcreteMethod(m, context));
+                            ResolvedJavaMethod resolvedMethod = type.resolveConcreteMethod(m, context);
+                            if (isSignaturePolymorphic(m)) {
+                                // Signature polymorphic methods must not be resolved
+                                assertNull(String.format("Got: %s", resolvedMethod), resolvedMethod);
+                            } else {
+                                ResolvedJavaMethod i = metaAccess.lookupJavaMethod(impl);
+                                assertEquals(i, resolvedMethod);
+                            }
                         }
                     }
                 }
@@ -929,4 +958,8 @@
             }
         }
     }
+
+    private static boolean isSignaturePolymorphic(ResolvedJavaMethod method) {
+        return method.getAnnotation(SIGNATURE_POLYMORPHIC_CLASS) != null;
+    }
 }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/loopopts/UseCountedLoopSafepoints.java
--- a/hotspot/test/compiler/loopopts/UseCountedLoopSafepoints.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/loopopts/UseCountedLoopSafepoints.java	Thu Sep 22 18:32:20 2016 +0000
@@ -22,51 +22,32 @@
  *
  */
 
-/**
- * @test
- * @bug 6869327
- * @summary Test that C2 flag UseCountedLoopSafepoints ensures a safepoint is kept in a CountedLoop
- * @library /test/lib
- * @modules java.base/jdk.internal.misc
- * @ignore 8146096
- * @run driver compiler.loopopts.UseCountedLoopSafepoints
- */
-
 package compiler.loopopts;
 
-import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.process.ProcessTools;
-
-import java.util.concurrent.atomic.AtomicLong;
+import java.lang.reflect.Method;
+import sun.hotspot.WhiteBox;
+import jdk.test.lib.Asserts;
+import compiler.whitebox.CompilerWhiteBoxTest;
 
 public class UseCountedLoopSafepoints {
-    private static final AtomicLong _num = new AtomicLong(0);
+    private static final WhiteBox WB = WhiteBox.getWhiteBox();
+    private static final String METHOD_NAME = "testMethod";
 
-    // Uses the fact that an EnableBiasedLocking vmop will be started
-    // after 500ms, while we are still in the loop. If there is a
-    // safepoint in the counted loop, then we will reach safepoint
-    // very quickly. Otherwise SafepointTimeout will be hit.
+    private long accum = 0;
+
     public static void main (String args[]) throws Exception {
-        if (args.length == 1) {
-            final int loops = Integer.parseInt(args[0]);
-            for (int i = 0; i < loops; i++) {
-                _num.addAndGet(1);
-            }
-        } else {
-            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
-                    "-XX:+IgnoreUnrecognizedVMOptions",
-                    "-XX:-TieredCompilation",
-                    "-XX:+UseBiasedLocking",
-                    "-XX:BiasedLockingStartupDelay=500",
-                    "-XX:+SafepointTimeout",
-                    "-XX:SafepointTimeoutDelay=2000",
-                    "-XX:+UseCountedLoopSafepoints",
-                    UseCountedLoopSafepoints.class.getName(),
-                    "2000000000"
-                    );
-            OutputAnalyzer output = new OutputAnalyzer(pb.start());
-            output.shouldNotContain("Timeout detected");
-            output.shouldHaveExitValue(0);
+        new UseCountedLoopSafepoints().testMethod();
+        Method m = UseCountedLoopSafepoints.class.getDeclaredMethod(METHOD_NAME);
+        String directive = "[{ match: \"" + UseCountedLoopSafepoints.class.getName().replace('.', '/')
+                + "." + METHOD_NAME + "\", " + "BackgroundCompilation: false }]";
+        Asserts.assertTrue(WB.addCompilerDirective(directive) == 1, "Can't add compiler directive");
+        Asserts.assertTrue(WB.enqueueMethodForCompilation(m,
+                CompilerWhiteBoxTest.COMP_LEVEL_FULL_OPTIMIZATION), "Can't enqueue method");
+    }
+
+    private void testMethod() {
+        for (int i = 0; i < 100; i++) {
+            accum += accum << 5 + accum >> 4 - accum >>> 5;
         }
     }
 }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/loopopts/UseCountedLoopSafepointsTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/loopopts/UseCountedLoopSafepointsTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,123 @@
+/*
+ * 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 6869327
+ * @summary Test that C2 flag UseCountedLoopSafepoints ensures a safepoint is kept in a CountedLoop
+ * @library /test/lib /
+ * @requires vm.compMode != "Xint" & vm.flavor == "server" & (vm.opt.TieredStopAtLevel == null | vm.opt.TieredStopAtLevel == 4)
+ * @modules java.base/jdk.internal.misc
+ * @build sun.hotspot.WhiteBox
+ * @run driver ClassFileInstaller sun.hotspot.WhiteBox
+ *                                sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run driver compiler.loopopts.UseCountedLoopSafepointsTest
+ */
+
+package compiler.loopopts;
+
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import jdk.test.lib.Asserts;
+
+/* Idea of this test is to check if ideal graph has CountedLoopEnd->SafePoint edge in case
+   of UseCountedLoopSafepoint enabled and has no such edge in case it's disabled. Restricting
+   compilation to testMethod only will leave only one counted loop (the one in testedMethod) */
+public class UseCountedLoopSafepointsTest {
+
+    public static void main (String args[]) {
+        check(true); // check ideal graph with UseCountedLoopSafepoint enabled
+        check(false); // ... and disabled
+    }
+
+    private static void check(boolean enabled) {
+        OutputAnalyzer oa;
+        try {
+            oa = ProcessTools.executeTestJvm("-XX:+UnlockDiagnosticVMOptions", "-Xbootclasspath/a:.",
+                    "-XX:" + (enabled ? "+" : "-") + "UseCountedLoopSafepoints", "-XX:+WhiteBoxAPI",
+                    "-XX:-Inline", "-Xbatch", "-XX:+PrintIdeal", "-XX:LoopUnrollLimit=0",
+                    "-XX:CompileOnly=" + UseCountedLoopSafepoints.class.getName() + "::testMethod",
+                    UseCountedLoopSafepoints.class.getName());
+        } catch (Exception e) {
+            throw new Error("Exception launching child for case enabled=" + enabled + " : " + e, e);
+        }
+        oa.shouldHaveExitValue(0);
+        // parse output in seach of SafePoint and CountedLoopEnd nodes
+        List<Node> safePoints = new ArrayList<>();
+        List<Node> loopEnds = new ArrayList<>();
+        for (String line : oa.getOutput().split("\\n")) {
+            int separatorIndex = line.indexOf("\t===");
+            if (separatorIndex > -1) {
+                String header = line.substring(0, separatorIndex);
+                if (header.endsWith("\tSafePoint")) {
+                    safePoints.add(new Node("SafePoint", line));
+                } else if (header.endsWith("\tCountedLoopEnd")) {
+                    loopEnds.add(new Node("CountedLoopEnd", line));
+                }
+            }
+        }
+        // now, find CountedLoopEnd -> SafePoint edge
+        boolean found = false;
+        for (Node loopEnd : loopEnds) {
+            found |= loopEnd.to.stream()
+                                 .filter(id -> nodeListHasElementWithId(safePoints, id))
+                                 .findAny()
+                                 .isPresent();
+        }
+        Asserts.assertEQ(enabled, found, "Safepoint " + (found ? "" : "not ") + "found");
+    }
+
+    private static boolean nodeListHasElementWithId(List<Node> list, int id) {
+        return list.stream()
+                   .filter(node -> node.id == id)
+                   .findAny()
+                   .isPresent();
+    }
+
+    private static class Node {
+        public final int id;
+        public final List<Integer> from;
+        public final List<Integer> to;
+
+        public Node(String name, String str) {
+            List<Integer> tmpFrom = new ArrayList<>();
+            List<Integer> tmpTo = new ArrayList<>();
+            // parse string like: " $id    $name       ===  $to1 $to2 ...   [[ $from1 $from2 ... ]] $anything"
+            // example:  318    SafePoint       ===  317  1  304  1  1  10  308  [[ 97  74 ]]  ...
+            id = Integer.parseInt(str.substring(1, str.indexOf(name)).trim());
+            Arrays.stream(str.substring(str.indexOf("===") + 4, str.indexOf("[[")).trim().split("\\s+"))
+                  .map(Integer::parseInt)
+                  .forEach(tmpTo::add);
+            Arrays.stream(str.substring(str.indexOf("[[") + 3, str.indexOf("]]")).trim().split("\\s+"))
+                  .map(Integer::parseInt)
+                  .forEach(tmpFrom::add);
+            this.from = Collections.unmodifiableList(tmpFrom);
+            this.to = Collections.unmodifiableList(tmpTo);
+        }
+    }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/loopopts/superword/TestVectorizationWithInvariant.java
--- a/hotspot/test/compiler/loopopts/superword/TestVectorizationWithInvariant.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/loopopts/superword/TestVectorizationWithInvariant.java	Thu Sep 22 18:32:20 2016 +0000
@@ -34,7 +34,6 @@
 package compiler.loopopts.superword;
 
 import jdk.internal.misc.Unsafe;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 public class TestVectorizationWithInvariant {
 
@@ -43,7 +42,7 @@
     private static final long CHAR_ARRAY_OFFSET;
 
     static {
-        unsafe = UnsafeHelper.getUnsafe();
+        unsafe = Unsafe.getUnsafe();
         BYTE_ARRAY_OFFSET = unsafe.arrayBaseOffset(byte[].class);
         CHAR_ARRAY_OFFSET = unsafe.arrayBaseOffset(char[].class);
     }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/rtm/locking/TestRTMAbortRatio.java
--- a/hotspot/test/compiler/rtm/locking/TestRTMAbortRatio.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/rtm/locking/TestRTMAbortRatio.java	Thu Sep 22 18:32:20 2016 +0000
@@ -49,7 +49,6 @@
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
 import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.test.lib.cli.CommandLineOptionTest;
 import jdk.test.lib.cli.predicate.AndPredicate;
 
@@ -125,7 +124,7 @@
     public static class Test implements CompilableTest {
         private static final int TOTAL_ITERATIONS = 10000;
         private static final int WARMUP_ITERATIONS = 1000;
-        private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+        private static final Unsafe UNSAFE = Unsafe.getUnsafe();
         private final Object monitor = new Object();
         // Following field have to be static in order to avoid escape analysis.
         @SuppressWarnings("UnsuedDeclaration")
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java
--- a/hotspot/test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java	Thu Sep 22 18:32:20 2016 +0000
@@ -51,7 +51,6 @@
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
 import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.test.lib.cli.CommandLineOptionTest;
 import jdk.test.lib.cli.predicate.AndPredicate;
 
@@ -158,7 +157,7 @@
         private static int field = 0;
         private static final int ITERATIONS = 10000;
         private static final int RANGE_CHECK_AT = ITERATIONS / 2;
-        private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+        private static final Unsafe UNSAFE = Unsafe.getUnsafe();
         private final Object monitor = new Object();
 
         @Override
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/rtm/locking/TestRTMDeoptOnLowAbortRatio.java
--- a/hotspot/test/compiler/rtm/locking/TestRTMDeoptOnLowAbortRatio.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/rtm/locking/TestRTMDeoptOnLowAbortRatio.java	Thu Sep 22 18:32:20 2016 +0000
@@ -48,7 +48,6 @@
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
 import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.test.lib.cli.CommandLineOptionTest;
 import jdk.test.lib.cli.predicate.AndPredicate;
 
@@ -133,7 +132,7 @@
     }
 
     public static class Test implements CompilableTest {
-        private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+        private static final Unsafe UNSAFE = Unsafe.getUnsafe();
         private final Object monitor = new Object();
 
         @Override
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/rtm/locking/TestRTMLockingThreshold.java
--- a/hotspot/test/compiler/rtm/locking/TestRTMLockingThreshold.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/rtm/locking/TestRTMLockingThreshold.java	Thu Sep 22 18:32:20 2016 +0000
@@ -49,7 +49,6 @@
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
 import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.test.lib.cli.CommandLineOptionTest;
 import jdk.test.lib.cli.predicate.AndPredicate;
 
@@ -142,7 +141,7 @@
         @SuppressWarnings("UnsuedDeclaration")
         private static int field = 0;
         private static final int TOTAL_ITERATIONS = 10000;
-        private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+        private static final Unsafe UNSAFE = Unsafe.getUnsafe();
         private final Object monitor = new Object();
 
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/rtm/locking/TestRTMTotalCountIncrRate.java
--- a/hotspot/test/compiler/rtm/locking/TestRTMTotalCountIncrRate.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/rtm/locking/TestRTMTotalCountIncrRate.java	Thu Sep 22 18:32:20 2016 +0000
@@ -49,7 +49,6 @@
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Asserts;
 import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.test.lib.cli.CommandLineOptionTest;
 import jdk.test.lib.cli.predicate.AndPredicate;
 
@@ -113,7 +112,7 @@
 
     public static class Test implements CompilableTest {
         private static final long TOTAL_ITERATIONS = 10000L;
-        private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+        private static final Unsafe UNSAFE = Unsafe.getUnsafe();
         private final Object monitor = new Object();
         // Following field have to be static in order to avoid escape analysis.
         @SuppressWarnings("UnsuedDeclaration")
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/testlibrary/rtm/XAbortProvoker.java
--- a/hotspot/test/compiler/testlibrary/rtm/XAbortProvoker.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/testlibrary/rtm/XAbortProvoker.java	Thu Sep 22 18:32:20 2016 +0000
@@ -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
@@ -25,7 +25,6 @@
 package compiler.testlibrary.rtm;
 
 import jdk.internal.misc.Unsafe;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 /**
  * Current RTM locking implementation force transaction abort
@@ -35,7 +34,7 @@
     // Following field have to be static in order to avoid escape analysis.
     @SuppressWarnings("UnsuedDeclaration")
     private static int field = 0;
-    private static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+    private static final Unsafe UNSAFE = Unsafe.getUnsafe();
 
     public XAbortProvoker() {
         this(new Object());
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/unsafe/UnsafeOffHeapBooleanTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/unsafe/UnsafeOffHeapBooleanTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,92 @@
+/*
+ * 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 8161720
+ * @modules java.base/jdk.internal.misc
+ * @run main/othervm -Xint UnsafeOffHeapBooleanTest 1
+ * @run main/othervm -XX:+TieredCompilation -XX:TieredStopAtLevel=3 -Xbatch  UnsafeOffHeapBooleanTest 20000
+ * @run main/othervm -XX:-TieredCompilation -Xbatch UnsafeOffHeapBooleanTest 20000
+ */
+
+
+import java.lang.reflect.Field;
+import jdk.internal.misc.Unsafe;
+
+public class UnsafeOffHeapBooleanTest {
+    static boolean bool0 = false, bool1 = false, result = false;
+    static Unsafe UNSAFE = Unsafe.getUnsafe();
+    static long offHeapMemory;
+
+    public static void test() {
+        // Write two bytes to the off-heap memory location, both
+        // bytes correspond to the boolean value 'true'.
+        UNSAFE.putShort(null, offHeapMemory, (short)0x0204);
+
+        // Read two bytes from the storage allocated above (as booleans).
+        bool0 = UNSAFE.getBoolean(null, offHeapMemory + 0);
+        bool1 = UNSAFE.getBoolean(null, offHeapMemory + 1);
+        result = bool0 & bool1;
+    }
+
+    public static void main(String args[]) {
+        System.out.println("### Test started");
+
+        if (args.length != 1) {
+            throw new RuntimeException("### Test failure: test called with incorrect number of arguments");
+        }
+
+        // Allocate two bytes of storage.
+        offHeapMemory = UNSAFE.allocateMemory(2);
+
+        try {
+            for (int i = 0; i < Integer.parseInt(args[0]); i++) {
+                test();
+            }
+
+            // Check if the two 'true' boolean values were normalized
+            // (i.e., reduced from the range 1...255 to 1).
+            if (!bool0 || !bool1 || !result) {
+                System.out.println("Some of the results below are wrong");
+                System.out.println("bool0 is: " + bool0);
+                System.out.println("bool1 is: " + bool1);
+                System.out.println("bool0 & bool1 is: " + result);
+                System.out.println("===================================");
+                throw new RuntimeException("### Test failed");
+            } else {
+                System.out.println("Test generated correct results");
+                System.out.println("bool0 is: " + bool0);
+                System.out.println("bool1 is: " + bool1);
+                System.out.println("bool0 & bool1 is: " + result);
+                System.out.println("===================================");
+            }
+        } catch (NumberFormatException e) {
+            throw new RuntimeException("### Test failure: test called with incorrectly formatted parameter");
+        }
+
+        UNSAFE.freeMemory(offHeapMemory);
+
+        System.out.println("### Test passed");
+    }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/unsafe/UnsafeOnHeapBooleanTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/unsafe/UnsafeOnHeapBooleanTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,95 @@
+/*
+ * 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 8161720
+ * @modules java.base/jdk.internal.misc
+ * @run main/othervm -Xint UnsafeOnHeapBooleanTest 1
+ * @run main/othervm -XX:-UseOnStackReplacement -XX:+TieredCompilation -XX:TieredStopAtLevel=3 -Xbatch UnsafeOnHeapBooleanTest 20000
+ * @run main/othervm -XX:-UseOnStackReplacement -XX:-TieredCompilation -Xbatch UnsafeOnHeapBooleanTest 20000
+ */
+
+import java.lang.reflect.Field;
+import jdk.internal.misc.Unsafe;
+
+public class UnsafeOnHeapBooleanTest {
+    static short static_v;
+    static boolean bool0 = false, bool1 = false, result = false;
+    static Unsafe UNSAFE = Unsafe.getUnsafe();
+
+    public static void test() {
+        try {
+            // Write two bytes into the static field
+            // UnsafeOnHeapBooleanTest.static_v write two values. Both
+            // bytes correspond to the boolean value 'true'.
+            Field staticVField = UnsafeOnHeapBooleanTest.class.getDeclaredField("static_v");
+            Object base = UNSAFE.staticFieldBase(staticVField);
+            long offset = UNSAFE.staticFieldOffset(staticVField);
+            UNSAFE.putShort(base, offset, (short)0x0204);
+
+            // Read two bytes from the static field
+            // UnsafeOnHeapBooleanTest.static_v (as booleans).
+            bool0 = UNSAFE.getBoolean(base, offset + 0);
+            bool1 = UNSAFE.getBoolean(base, offset + 1);
+            result = bool0 & bool1;
+        } catch (NoSuchFieldException e) {
+            throw new RuntimeException("### Test failure: static field UnsafeOnHeapBooleanTest.static_v was not found");
+        }
+    }
+
+    public static void main(String args[]) {
+        System.out.println("### Test started");
+
+        if (args.length != 1) {
+            throw new RuntimeException("### Test failure: test called with incorrect number of arguments");
+        }
+
+        try {
+            for (int i = 0; i < Integer.parseInt(args[0]); i++) {
+                test();
+            }
+
+            // Check if the two 'true' boolean values were normalized
+            // (i.e., reduced from the range 1...255 to 1).
+            if (!bool0 || !bool1 || !result) {
+                System.out.println("Some of the results below are wrong");
+                System.out.println("bool0 is: " + bool0);
+                System.out.println("bool1 is: " + bool1);
+                System.out.println("bool0 & bool1 is: " + result);
+                System.out.println("===================================");
+                throw new RuntimeException("### Test failed");
+            } else {
+                System.out.println("Test generated correct results");
+                System.out.println("bool0 is: " + bool0);
+                System.out.println("bool1 is: " + bool1);
+                System.out.println("bool0 & bool1 is: " + result);
+                System.out.println("===================================");
+            }
+        } catch (NumberFormatException e) {
+            throw new RuntimeException("### Test failure: test called with incorrectly formatted parameter");
+        }
+
+        System.out.println("### Test passed");
+    }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/unsafe/UnsafeRaw.java
--- a/hotspot/test/compiler/unsafe/UnsafeRaw.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/compiler/unsafe/UnsafeRaw.java	Thu Sep 22 18:32:20 2016 +0000
@@ -35,7 +35,6 @@
 
 import jdk.internal.misc.Unsafe;
 import jdk.test.lib.Utils;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 import java.util.Random;
 
@@ -82,7 +81,7 @@
   }
 
   public static void main(String[] args) throws Exception {
-    Unsafe unsafe = UnsafeHelper.getUnsafe();
+    Unsafe unsafe = Unsafe.getUnsafe();
     final int array_size = 128;
     final int element_size = 4;
     final int magic = 0x12345678;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/compiler/unsafe/UnsafeSmallOffsetBooleanAccessTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/unsafe/UnsafeSmallOffsetBooleanAccessTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,85 @@
+/*
+ * 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 8161720
+ * @modules java.base/jdk.internal.misc
+ * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xbatch -XX:-TieredCompilation UnsafeSmallOffsetBooleanAccessTest
+ * @run main/othervm -Xbatch UnsafeSmallOffsetBooleanAccessTest
+ */
+
+import java.util.Random;
+import jdk.internal.misc.Unsafe;
+
+public class UnsafeSmallOffsetBooleanAccessTest {
+    static final Unsafe UNSAFE = Unsafe.getUnsafe();
+    static final long F_OFFSET;
+    static final Random random = new Random();
+
+    static {
+        try {
+            F_OFFSET = UNSAFE.objectFieldOffset(T.class.getDeclaredField("f"));
+            System.out.println("The offset is: " + F_OFFSET);
+        } catch (Exception e) {
+            throw new Error(e);
+        }
+    }
+
+    static class T {
+        boolean f;
+    }
+
+    // Always return false in a way that is not obvious to the compiler.
+    public static boolean myRandom() {
+        if (random.nextInt(101) > 134) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public static boolean test(T t) {
+        boolean result = false;
+        for (int i = 0; i < 20000; i++) {
+            boolean random = myRandom();
+            // If myRandom() returns false, access t.f.
+            //
+            // If myRandom() returns true, access virtual address
+            // F_OFFSET. That address is most likely not mapped,
+            // therefore the access will most likely cause a
+            // crash. We're not concerned about that, though, because
+            // myRandom() always returns false. However, the C2
+            // compiler avoids normalization of the value returned by
+            // getBoolean in this case.
+            result = UNSAFE.getBoolean(myRandom() ? null : t, F_OFFSET);
+        }
+        return result;
+    }
+
+    public static void main(String[] args) {
+        T t = new T();
+        UNSAFE.putBoolean(t, F_OFFSET, true);
+        System.out.println("The result for t is: " + test(t));
+    }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/gc/arguments/TestMaxMinHeapFreeRatioFlags.java
--- a/hotspot/test/gc/arguments/TestMaxMinHeapFreeRatioFlags.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/gc/arguments/TestMaxMinHeapFreeRatioFlags.java	Thu Sep 22 18:32:20 2016 +0000
@@ -37,7 +37,6 @@
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.Utils;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 
 public class TestMaxMinHeapFreeRatioFlags {
@@ -134,7 +133,7 @@
      */
     public static class RatioVerifier {
 
-        private static final Unsafe unsafe = UnsafeHelper.getUnsafe();
+        private static final Unsafe unsafe = Unsafe.getUnsafe();
 
         // Size of byte array that will be allocated
         public static final int CHUNK_SIZE = 1024;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/gc/arguments/TestTargetSurvivorRatioFlag.java
--- a/hotspot/test/gc/arguments/TestTargetSurvivorRatioFlag.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/gc/arguments/TestTargetSurvivorRatioFlag.java	Thu Sep 22 18:32:20 2016 +0000
@@ -46,7 +46,6 @@
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.Utils;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import sun.hotspot.WhiteBox;
 
 /* In order to test that TargetSurvivorRatio affects survivor space occupancy
@@ -249,7 +248,7 @@
     public static class TargetSurvivorRatioVerifier {
 
         static final WhiteBox wb = WhiteBox.getWhiteBox();
-        static final Unsafe unsafe = UnsafeHelper.getUnsafe();
+        static final Unsafe unsafe = Unsafe.getUnsafe();
 
         // Desired size of memory allocated at once
         public static final int CHUNK_SIZE = 1024;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/gc/class_unloading/TestClassUnloadingDisabled.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/class_unloading/TestClassUnloadingDisabled.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reqserved.
+ * 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
+ * @key gc
+ * @bug 8114823
+ * @requires vm.gc == null
+ * @requires vm.opt.ExplicitGCInvokesConcurrent != true
+ * @requires vm.opt.ClassUnloading != true
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @build sun.hotspot.WhiteBox
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ *
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *                   -XX:-ClassUnloading -XX:+UseG1GC TestClassUnloadingDisabled
+ *
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *                   -XX:-ClassUnloading -XX:+UseSerialGC TestClassUnloadingDisabled
+ *
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *                   -XX:-ClassUnloading -XX:+UseParallelGC TestClassUnloadingDisabled
+ *
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *                   -XX:-ClassUnloading -XX:+UseConcMarkSweepGC TestClassUnloadingDisabled
+ */
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import sun.hotspot.WhiteBox;
+
+import static jdk.test.lib.Asserts.*;
+
+public class TestClassUnloadingDisabled {
+    public static void main(String args[]) throws Exception {
+        final WhiteBox wb = WhiteBox.getWhiteBox();
+        // Fetch the dir where the test class and the class
+        // to be loaded resides.
+        String classDir = TestClassUnloadingDisabled.class.getProtectionDomain().getCodeSource().getLocation().getPath();
+        String className = "ClassToLoadUnload";
+
+        assertFalse(wb.isClassAlive(className), "Should not be loaded yet");
+
+        // The NoPDClassLoader handles loading classes in the test directory
+        // and loads them without a protection domain, which in some cases
+        // keeps the class live regardless of marking state.
+        NoPDClassLoader nopd = new NoPDClassLoader(classDir);
+        nopd.loadClass(className);
+
+        assertTrue(wb.isClassAlive(className), "Class should be loaded");
+
+        // Clear the class-loader, class and object references to make
+        // class unloading possible.
+        nopd = null;
+
+        System.gc();
+        assertTrue(wb.isClassAlive(className), "Class should not have ben unloaded");
+    }
+}
+
+class NoPDClassLoader extends ClassLoader {
+    String path;
+
+    NoPDClassLoader(String path) {
+        this.path = path;
+    }
+
+    public Class<?> loadClass(String name) throws ClassNotFoundException {
+        byte[] cls = null;
+        File f = new File(path,name + ".class");
+
+        // Delegate class loading if class not present in the given
+        // directory.
+        if (!f.exists()) {
+            return super.loadClass(name);
+        }
+
+        try {
+            Path path = Paths.get(f.getAbsolutePath());
+            cls = Files.readAllBytes(path);
+        } catch (IOException e) {
+            throw new ClassNotFoundException(name);
+        }
+
+        // Define class with no protection domain and resolve it.
+        return defineClass(name, cls, 0, cls.length, null);
+    }
+}
+
+class ClassToLoadUnload {
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/jprt.config
--- a/hotspot/test/jprt.config	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/jprt.config	Thu Sep 22 18:32:20 2016 +0000
@@ -86,12 +86,12 @@
     fi
 
     # Add basic solaris system paths
-    path4sdk=/usr/ccs/bin:/usr/ccs/lib:/usr/bin:/bin:/usr/sfw/bin
+    path4sdk=/usr/bin
 
     # Find GNU make
-    make=/usr/sfw/bin/gmake
+    make=/usr/bin/gmake
     if [ ! -f ${make} ] ; then
-	make=/opt/sfw/bin/gmake
+	make=/usr/gnu/bin/make
 	if [ ! -f ${make} ] ; then
 	    make=${slashjava}/devtools/${solaris_arch}/bin/gnumake
         fi 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges.java
--- a/hotspot/test/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges.java	Thu Sep 22 18:32:20 2016 +0000
@@ -89,20 +89,6 @@
         excludeTestMaxRange("CICompilerCount");
 
         /*
-         * JDK-8136766
-         * Temporarily remove ThreadStackSize from testing because Windows can set it to 0
-         * (for default OS size) but other platforms insist it must be greater than 0
-        */
-        excludeTestRange("ThreadStackSize");
-
-        /*
-         * Remove the flag controlling the size of the stack because the
-         * flag has direct influence on the physical memory usage of
-         * the VM.
-         */
-        allOptionsAsMap.remove("CompilerThreadStackSize");
-
-        /*
          * Exclude MallocMaxTestWords as it is expected to exit VM at small values (>=0)
          */
         excludeTestMinRange("MallocMaxTestWords");
@@ -124,6 +110,8 @@
         excludeTestMaxRange("OldSize");
         excludeTestMaxRange("ParallelGCThreads");
 
+        excludeTestMaxRange("CompilerThreadStackSize");
+        excludeTestMaxRange("ThreadStackSize");
         excludeTestMaxRange("VMThreadStackSize");
 
         /*
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/ErrorHandling/CreateCoredumpOnCrash.java
--- a/hotspot/test/runtime/ErrorHandling/CreateCoredumpOnCrash.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/ErrorHandling/CreateCoredumpOnCrash.java	Thu Sep 22 18:32:20 2016 +0000
@@ -34,13 +34,12 @@
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.Platform;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 
 public class CreateCoredumpOnCrash {
     private static class Crasher {
         public static void main(String[] args) {
-            UnsafeHelper.getUnsafe().putInt(0L, 0);
+            Unsafe.getUnsafe().putInt(0L, 0);
         }
     }
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/ErrorHandling/ProblematicFrameTest.java
--- a/hotspot/test/runtime/ErrorHandling/ProblematicFrameTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/ErrorHandling/ProblematicFrameTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -35,14 +35,13 @@
 
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.process.OutputAnalyzer;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 import jdk.internal.misc.Unsafe;
 
 public class ProblematicFrameTest {
     private static class Crasher {
         public static void main(String[] args) {
-            UnsafeHelper.getUnsafe().getInt(0);
+            Unsafe.getUnsafe().getInt(0);
         }
     }
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/LocalLong/LocalLongHelper.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/LocalLong/LocalLongHelper.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,99 @@
+/*
+ * 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.
+ */
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.lang.StackWalker.StackFrame;
+
+public class LocalLongHelper {
+    static StackWalker sw;
+    static Method intValue;
+    static Method getLocals;
+    static Class<?> primitiveValueClass;
+    static Method primitiveType;
+    static Method getMethodType;
+    static Field memberName;
+    static Field offset;
+
+    public static void main(String[] args) throws Throwable {
+        setupReflectionStatics();
+        new LocalLongHelper().longArg(0xC0FFEE, 0x1234567890ABCDEFL);
+    }
+
+    // locals[2] contains the high byte of the long argument.
+    public long longArg(int i, long l) throws Throwable {
+        List<StackFrame> frames = sw.walk(s -> s.collect(Collectors.toList()));
+        Object[] locals = (Object[]) getLocals.invoke(frames.get(0));
+
+        int locals_2 = (int) intValue.invoke(locals[2]);
+        if (locals_2 != 0){
+            throw new RuntimeException("Expected locals_2 == 0");
+        }
+        return l; // Don't want l to become a dead var
+    }
+
+    private static void setupReflectionStatics() throws Throwable {
+        Class<?> liveStackFrameClass = Class.forName("java.lang.LiveStackFrame");
+        primitiveValueClass = Class.forName("java.lang.LiveStackFrame$PrimitiveValue");
+
+        getLocals = liveStackFrameClass.getDeclaredMethod("getLocals");
+        getLocals.setAccessible(true);
+
+        intValue = primitiveValueClass.getDeclaredMethod("intValue");
+        intValue.setAccessible(true);
+
+        Class<?> stackFrameInfoClass = Class.forName("java.lang.StackFrameInfo");
+        memberName = stackFrameInfoClass.getDeclaredField("memberName");
+        memberName.setAccessible(true);
+        offset = stackFrameInfoClass.getDeclaredField("bci");
+        offset.setAccessible(true);
+        getMethodType = Class.forName("java.lang.invoke.MemberName").getDeclaredMethod("getMethodType");
+        getMethodType.setAccessible(true);
+
+        Class<?> extendedOptionClass = Class.forName("java.lang.StackWalker$ExtendedOption");
+        Method ewsNI = StackWalker.class.getDeclaredMethod("newInstance", Set.class, extendedOptionClass);
+        ewsNI.setAccessible(true);
+        Field f = extendedOptionClass.getDeclaredField("LOCALS_AND_OPERANDS");
+        f.setAccessible(true);
+        Object localsAndOperandsOption = f.get(null);
+
+        primitiveType = primitiveValueClass.getDeclaredMethod("type");
+        primitiveType.setAccessible(true);
+
+        sw = (StackWalker) ewsNI.invoke(null, java.util.Collections.emptySet(), localsAndOperandsOption);
+    }
+
+    private static String type(Object o) throws Throwable {
+        if (primitiveValueClass.isInstance(o)) {
+            final char c = (char) primitiveType.invoke(o);
+            return String.valueOf(c);
+        } else if (o != null) {
+            return o.getClass().getName();
+        } else {
+            return "null";
+        }
+    }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/LocalLong/LocalLongTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/LocalLong/LocalLongTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,47 @@
+/*
+ * 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 LocalLongTest
+ * @bug 8163014
+ * @modules java.base/jdk.internal.misc
+ * @library /test/lib
+ * @compile LocalLongHelper.java
+ * @run driver LocalLongTest
+ */
+
+import jdk.test.lib.Platform;
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+
+public class LocalLongTest {
+    public static void main(String... args) throws Exception {
+        if (Platform.is64bit()) {
+            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xint",
+                                                                      "LocalLongHelper");
+            OutputAnalyzer o = new OutputAnalyzer(pb.start());
+            o.shouldHaveExitValue(0);
+        }
+    };
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/NMT/CheckForProperDetailStackTrace.java
--- a/hotspot/test/runtime/NMT/CheckForProperDetailStackTrace.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/NMT/CheckForProperDetailStackTrace.java	Thu Sep 22 18:32:20 2016 +0000
@@ -57,11 +57,6 @@
     private static String expectedSymbol =
         "locked_create_entry_or_null";
 
-    private static final String jdkDebug = System.getProperty("jdk.debug");
-    private static boolean isSlowDebugBuild() {
-        return (jdkDebug.toLowerCase().equals("slowdebug"));
-    }
-
     public static void main(String args[]) throws Exception {
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
             "-XX:+UnlockDiagnosticVMOptions",
@@ -76,11 +71,12 @@
         output.shouldNotContain("NativeCallStack::NativeCallStack");
         output.shouldNotContain("os::get_native_stack");
 
-        // AllocateHeap shouldn't be in the output because it is suppose to always be inlined.
-        // We check for that here, but allow it for Windows and Solaris slowdebug builds because
-        // the compiler ends up not inlining AllocateHeap.
+        // AllocateHeap shouldn't be in the output because it is supposed to always be inlined.
+        // We check for that here, but allow it for Aix, Solaris and Windows slowdebug builds
+        // because the compiler ends up not inlining AllocateHeap.
         Boolean okToHaveAllocateHeap =
-            isSlowDebugBuild() && (Platform.isSolaris() || Platform.isWindows());
+            Platform.isSlowDebugBuild() &&
+            (Platform.isAix() || Platform.isSolaris() || Platform.isWindows());
         if (!okToHaveAllocateHeap) {
             output.shouldNotContain("AllocateHeap");
         }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Thread/TooSmallStackSize.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/Thread/TooSmallStackSize.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,198 @@
+/*
+ * 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 8140520
+ * @summary Setting small CompilerThreadStackSize, ThreadStackSize, and
+ * VMThreadStackSize values should result in an error message that shows
+ * the minimum stack size value for each thread type.
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @run main TooSmallStackSize
+ */
+
+/*
+ * The primary purpose of this test is to make sure we can run with a
+ * stack smaller than the minimum without crashing. Also this test will
+ * determine the minimum allowed stack size for the platform (as
+ * provided by the JVM error message when a very small stack is used),
+ * and then verify that the JVM can be launched with that stack size
+ * without a crash or any error messages.
+ *
+ * Note: The '-Xss<size>' and '-XX:ThreadStackSize=<k-bytes>' options
+ * both control Java thread stack size. This repo's version of the test
+ * exercises the '-XX:ThreadStackSize' VM option. The jdk repo's version
+ * of the test exercises the '-Xss' option.
+ */
+
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+
+public class TooSmallStackSize {
+    /* for debugging. Normally false. */
+    static final boolean verbose = false;
+    static final String CompilerThreadStackSizeString = "CompilerThreadStackSize";
+    static final String ThreadStackSizeString = "Java thread stack size";
+    static final String VMThreadStackSizeString = "VMThreadStackSize";
+
+    /*
+     * Returns the minimum stack size this platform will allowed based on the
+     * contents of the error message the JVM outputs when too small of a
+     * stack size was used.
+     *
+     * The testOutput argument must contain the result of having already run
+     * the JVM with too small of a stack size.
+     */
+    static String getMinStackAllowed(String testOutput) {
+        /*
+         * The JVM output will contain in one of the lines:
+         *   "The CompilerThreadStackSize specified is too small. Specify at least 100k"
+         *   "The Java thread stack size specified is too small. Specify at least 100k"
+         *   "The VMThreadStackSize specified is too small. Specify at least 100k"
+         * Although the actual size will vary. We need to extract this size
+         * string from the output and return it.
+         */
+        String matchStr = "Specify at least ";
+        int match_idx = testOutput.indexOf(matchStr);
+        if (match_idx >= 0) {
+            int size_start_idx = match_idx + matchStr.length();
+            int k_start_idx = testOutput.indexOf("k", size_start_idx);
+            // don't include the 'k'; the caller will have to
+            // add it back as needed.
+            return testOutput.substring(size_start_idx, k_start_idx);
+        }
+
+        System.out.println("Expect='" + matchStr + "'");
+        System.out.println("Actual: " + testOutput);
+        System.out.println("FAILED: Could not get the stack size from the output");
+        throw new RuntimeException("test fails");
+    }
+
+    /*
+     * Run the JVM with the specified stack size.
+     *
+     * Returns the minimum allowed stack size gleaned from the error message,
+     * if there is an error message. Otherwise returns the stack size passed in.
+     */
+    static String checkStack(String stackOption, String optionMesg, String stackSize) throws Exception {
+        String min_stack_allowed;
+
+        System.out.println("*** Testing " + stackOption + stackSize);
+
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+            stackOption + stackSize,
+            // Uncomment the following to get log output
+            // that shows actual thread creation sizes.
+            // "-Xlog:os+thread",
+            "-version");
+
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+        if (verbose) {
+            System.out.println("stdout: " + output.getStdout());
+        }
+
+        if (output.getExitValue() == 0) {
+            // checkMinStackAllowed() is called with stackSize values
+            // that should be the minimum that works. This method,
+            // checkStack(), is called with stackSize values that
+            // should be too small and result in error messages.
+            // However, some platforms fix up a stackSize value that is
+            // too small into something that works so we have to allow
+            // for checkStack() calls that work.
+            System.out.println("PASSED: got exit_code == 0 with " + stackOption + stackSize);
+            min_stack_allowed = stackSize;
+        } else {
+            String expect = "The " + optionMesg + " specified is too small";
+            if (verbose) {
+                System.out.println("Expect='" + expect + "'");
+            }
+            output.shouldContain(expect);
+            min_stack_allowed = getMinStackAllowed(output.getStdout());
+
+            System.out.println("PASSED: got expected error message with " + stackOption + stackSize);
+        }
+
+        return min_stack_allowed;
+    }
+
+    /*
+     * Run the JVM with the minimum allowed stack size. This should always succeed.
+     */
+    static void checkMinStackAllowed(String stackOption, String optionMesg, String stackSize) throws Exception {
+        System.out.println("*** Testing " + stackOption + stackSize);
+
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+            stackOption + stackSize,
+            // Uncomment the following to get log output
+            // that shows actual thread creation sizes.
+            // "-Xlog:os+thread",
+            "-version");
+
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldHaveExitValue(0);
+
+        System.out.println("PASSED: VM launched with " + stackOption + stackSize);
+    }
+
+    public static void main(String... args) throws Exception {
+        /*
+         * The result of a 16k stack size should be a quick exit with a complaint
+         * that the stack size is too small. However, for some win32 builds, the
+         * stack is always at least 64k, and this also sometimes is the minimum
+         * allowed size, so we won't see an error in this case.
+         *
+         * This test case will also produce a crash on some platforms if the fix
+         * for 6762191 is not yet in place.
+         */
+        checkStack("-XX:ThreadStackSize=", ThreadStackSizeString, "16");
+
+        /*
+         * Try with a 32k stack size, which is the size that the launcher will
+         * set to if you try setting to anything smaller. This should produce the same
+         * result as setting to 16k if the fix for 6762191 is in place.
+         */
+        String min_stack_allowed = checkStack("-XX:ThreadStackSize=", ThreadStackSizeString, "32");
+
+        /*
+         * Try again with a the minimum stack size that was given in the error message
+         */
+        checkMinStackAllowed("-XX:ThreadStackSize=", ThreadStackSizeString, min_stack_allowed);
+
+        /*
+         * Now redo the same tests with the compiler thread stack size:
+         */
+        checkStack("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, "16");
+        min_stack_allowed = checkStack("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, "32");
+        checkMinStackAllowed("-XX:CompilerThreadStackSize=", CompilerThreadStackSizeString, min_stack_allowed);
+
+        /*
+         * Now redo the same tests with the VM thread stack size:
+         */
+        checkStack("-XX:VMThreadStackSize=", VMThreadStackSizeString, "16");
+        min_stack_allowed = checkStack("-XX:VMThreadStackSize=", VMThreadStackSizeString, "32");
+        checkMinStackAllowed("-XX:VMThreadStackSize=", VMThreadStackSizeString, min_stack_allowed);
+    }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/AllocateInstance.java
--- a/hotspot/test/runtime/Unsafe/AllocateInstance.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/AllocateInstance.java	Thu Sep 22 18:32:20 2016 +0000
@@ -30,12 +30,11 @@
  * @run main AllocateInstance
  */
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class AllocateInstance {
-    static final Unsafe UNSAFE = UnsafeHelper.getUnsafe();
+    static final Unsafe UNSAFE = Unsafe.getUnsafe();
 
     class TestClass {
         public boolean calledConstructor = false;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/AllocateMemory.java
--- a/hotspot/test/runtime/Unsafe/AllocateMemory.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/AllocateMemory.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:MallocMaxTestWords=100m AllocateMemory
  */
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class AllocateMemory {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
 
         // Allocate a byte, write to the location and read back the value
         long address = unsafe.allocateMemory(1);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/CopyMemory.java
--- a/hotspot/test/runtime/Unsafe/CopyMemory.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/CopyMemory.java	Thu Sep 22 18:32:20 2016 +0000
@@ -30,14 +30,13 @@
  * @run main CopyMemory
  */
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class CopyMemory {
     final static int LENGTH = 8;
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         long src = unsafe.allocateMemory(LENGTH);
         long dst = unsafe.allocateMemory(LENGTH);
         assertNotEquals(src, 0L);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/DefineClass.java
--- a/hotspot/test/runtime/Unsafe/DefineClass.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/DefineClass.java	Thu Sep 22 18:32:20 2016 +0000
@@ -34,13 +34,12 @@
 import java.security.ProtectionDomain;
 import java.io.InputStream;
 import jdk.test.lib.InMemoryJavaCompiler;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class DefineClass {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         TestClassLoader classloader = new TestClassLoader();
         ProtectionDomain pd = new ProtectionDomain(null, null);
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/FieldOffset.java
--- a/hotspot/test/runtime/Unsafe/FieldOffset.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/FieldOffset.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,14 +31,13 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import java.lang.reflect.*;
 import static jdk.test.lib.Asserts.*;
 
 public class FieldOffset {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Field[] fields = Test.class.getDeclaredFields();
 
         for (int i = 0; i < fields.length; i++) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetField.java
--- a/hotspot/test/runtime/Unsafe/GetField.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetField.java	Thu Sep 22 18:32:20 2016 +0000
@@ -30,14 +30,13 @@
  * @run main GetField
  */
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import java.lang.reflect.*;
 import static jdk.test.lib.Asserts.*;
 
 public class GetField {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         // Unsafe.INVALID_FIELD_OFFSET is a static final int field,
         // make sure getField returns the correct field
         Field field = Unsafe.class.getField("INVALID_FIELD_OFFSET");
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutAddress.java
--- a/hotspot/test/runtime/Unsafe/GetPutAddress.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutAddress.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import jdk.test.lib.Platform;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutAddress {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         int addressSize = unsafe.addressSize();
         // Ensure the size returned from Unsafe.addressSize is correct
         assertEquals(unsafe.addressSize(), Platform.is32bit() ? 4 : 8);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutBoolean.java
--- a/hotspot/test/runtime/Unsafe/GetPutBoolean.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutBoolean.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutBoolean {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("b1");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutByte.java
--- a/hotspot/test/runtime/Unsafe/GetPutByte.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutByte.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutByte {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("b");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutChar.java
--- a/hotspot/test/runtime/Unsafe/GetPutChar.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutChar.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutChar {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("c");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutDouble.java
--- a/hotspot/test/runtime/Unsafe/GetPutDouble.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutDouble.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutDouble {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("d");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutFloat.java
--- a/hotspot/test/runtime/Unsafe/GetPutFloat.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutFloat.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutFloat {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("f");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutInt.java
--- a/hotspot/test/runtime/Unsafe/GetPutInt.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutInt.java	Thu Sep 22 18:32:20 2016 +0000
@@ -30,13 +30,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutInt {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("i");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutLong.java
--- a/hotspot/test/runtime/Unsafe/GetPutLong.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutLong.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutLong {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("l");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutObject.java
--- a/hotspot/test/runtime/Unsafe/GetPutObject.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutObject.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutObject {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Object o = new Object();
         Field field = Test.class.getField("o");
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetPutShort.java
--- a/hotspot/test/runtime/Unsafe/GetPutShort.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetPutShort.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class GetPutShort {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         Test t = new Test();
         Field field = Test.class.getField("s");
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/GetUncompressedObject.java
--- a/hotspot/test/runtime/Unsafe/GetUncompressedObject.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/GetUncompressedObject.java	Thu Sep 22 18:32:20 2016 +0000
@@ -30,13 +30,12 @@
 
 import static jdk.test.lib.Asserts.*;
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 
 public class GetUncompressedObject {
 
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
 
         // Allocate some memory and fill it with non-zero values.
         final int size = 32;
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/NestedUnsafe.java
--- a/hotspot/test/runtime/Unsafe/NestedUnsafe.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/NestedUnsafe.java	Thu Sep 22 18:32:20 2016 +0000
@@ -35,7 +35,6 @@
 import java.io.InputStream;
 import java.lang.*;
 import jdk.test.lib.InMemoryJavaCompiler;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
@@ -50,7 +49,7 @@
         " } } ");
 
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
 
         Class klass = unsafe.defineAnonymousClass(NestedUnsafe.class, klassbuf, new Object[0]);
         unsafe.ensureClassInitialized(klass);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/PageSize.java
--- a/hotspot/test/runtime/Unsafe/PageSize.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/PageSize.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  */
 
 import java.lang.reflect.Field;
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class PageSize {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         int pageSize = unsafe.pageSize();
 
         for (int n = 1; n != 0; n <<= 1) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/PrimitiveHostClass.java
--- a/hotspot/test/runtime/Unsafe/PrimitiveHostClass.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/PrimitiveHostClass.java	Thu Sep 22 18:32:20 2016 +0000
@@ -39,16 +39,7 @@
 
 public class PrimitiveHostClass {
 
-    static final Unsafe U;
-    static {
-        try {
-            Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
-            theUnsafe.setAccessible(true);
-            U = (Unsafe) theUnsafe.get(null);
-        } catch (Exception e) {
-            throw new AssertionError(e);
-        }
-    }
+    static final Unsafe U = Unsafe.getUnsafe();
 
     public static void testVMAnonymousClass(Class<?> hostClass) {
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/RangeCheck.java
--- a/hotspot/test/runtime/Unsafe/RangeCheck.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/RangeCheck.java	Thu Sep 22 18:32:20 2016 +0000
@@ -33,7 +33,6 @@
 import jdk.test.lib.process.ProcessTools;
 import jdk.test.lib.process.OutputAnalyzer;
 import jdk.test.lib.Platform;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 import jdk.internal.misc.Unsafe;
 
@@ -60,7 +59,7 @@
 
     public static class DummyClassWithMainRangeCheck {
         public static void main(String args[]) throws Exception {
-            Unsafe unsafe = UnsafeHelper.getUnsafe();
+            Unsafe unsafe = Unsafe.getUnsafe();
             unsafe.getObject(new DummyClassWithMainRangeCheck(), Short.MAX_VALUE);
         }
     }
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/Reallocate.java
--- a/hotspot/test/runtime/Unsafe/Reallocate.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/Reallocate.java	Thu Sep 22 18:32:20 2016 +0000
@@ -31,13 +31,12 @@
  * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:MallocMaxTestWords=100m Reallocate
  */
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class Reallocate {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
 
         long address = unsafe.allocateMemory(1);
         assertNotEquals(address, 0L);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/SetMemory.java
--- a/hotspot/test/runtime/Unsafe/SetMemory.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/SetMemory.java	Thu Sep 22 18:32:20 2016 +0000
@@ -30,13 +30,12 @@
  * @run main SetMemory
  */
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class SetMemory {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         long address = unsafe.allocateMemory(1);
         assertNotEquals(address, 0L);
         unsafe.setMemory(address, 1, (byte)17);
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/Unsafe/ThrowException.java
--- a/hotspot/test/runtime/Unsafe/ThrowException.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/Unsafe/ThrowException.java	Thu Sep 22 18:32:20 2016 +0000
@@ -30,13 +30,12 @@
  * @run main ThrowException
  */
 
-import jdk.test.lib.unsafe.UnsafeHelper;
 import jdk.internal.misc.Unsafe;
 import static jdk.test.lib.Asserts.*;
 
 public class ThrowException {
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
         try {
             unsafe.throwException(new TestException());
         } catch (Throwable t) {
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/contended/Basic.java
--- a/hotspot/test/runtime/contended/Basic.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/contended/Basic.java	Thu Sep 22 18:32:20 2016 +0000
@@ -48,20 +48,11 @@
  */
 public class Basic {
 
-    private static final Unsafe U;
+    private static final Unsafe U = Unsafe.getUnsafe();
     private static int ADDRESS_SIZE;
     private static int HEADER_SIZE;
 
     static {
-        // steal Unsafe
-        try {
-            Field unsafe = Unsafe.class.getDeclaredField("theUnsafe");
-            unsafe.setAccessible(true);
-            U = (Unsafe) unsafe.get(null);
-        } catch (NoSuchFieldException | IllegalAccessException e) {
-            throw new IllegalStateException(e);
-        }
-
         // When running with CompressedOops on 64-bit platform, the address size
         // reported by Unsafe is still 8, while the real reference fields are 4 bytes long.
         // Try to guess the reference field size with this naive trick.
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/contended/DefaultValue.java
--- a/hotspot/test/runtime/contended/DefaultValue.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/contended/DefaultValue.java	Thu Sep 22 18:32:20 2016 +0000
@@ -49,20 +49,11 @@
  */
 public class DefaultValue {
 
-    private static final Unsafe U;
+    private static final Unsafe U = Unsafe.getUnsafe();
     private static int ADDRESS_SIZE;
     private static int HEADER_SIZE;
 
     static {
-        // steal Unsafe
-        try {
-            Field unsafe = Unsafe.class.getDeclaredField("theUnsafe");
-            unsafe.setAccessible(true);
-            U = (Unsafe) unsafe.get(null);
-        } catch (NoSuchFieldException | IllegalAccessException e) {
-            throw new IllegalStateException(e);
-        }
-
         // When running with CompressedOops on 64-bit platform, the address size
         // reported by Unsafe is still 8, while the real reference fields are 4 bytes long.
         // Try to guess the reference field size with this naive trick.
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/contended/Inheritance1.java
--- a/hotspot/test/runtime/contended/Inheritance1.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/contended/Inheritance1.java	Thu Sep 22 18:32:20 2016 +0000
@@ -49,20 +49,11 @@
  */
 public class Inheritance1 {
 
-    private static final Unsafe U;
+    private static final Unsafe U = Unsafe.getUnsafe();
     private static int ADDRESS_SIZE;
     private static int HEADER_SIZE;
 
     static {
-        // steal Unsafe
-        try {
-            Field unsafe = Unsafe.class.getDeclaredField("theUnsafe");
-            unsafe.setAccessible(true);
-            U = (Unsafe) unsafe.get(null);
-        } catch (NoSuchFieldException | IllegalAccessException e) {
-            throw new IllegalStateException(e);
-        }
-
         // When running with CompressedOops on 64-bit platform, the address size
         // reported by Unsafe is still 8, while the real reference fields are 4 bytes long.
         // Try to guess the reference field size with this naive trick.
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/defineAnonClass/NestedUnsafe.java
--- a/hotspot/test/runtime/defineAnonClass/NestedUnsafe.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/defineAnonClass/NestedUnsafe.java	Thu Sep 22 18:32:20 2016 +0000
@@ -39,7 +39,6 @@
 import java.lang.*;
 import jdk.test.lib.*;
 import jdk.internal.misc.Unsafe;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 
 // Test that an anonymous class in package 'p' cannot define its own anonymous class
@@ -54,7 +53,7 @@
         " } } ");
 
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
 
         // The anonymous class calls defineAnonymousClass creating a nested anonymous class.
         byte klassbuf2[] = InMemoryJavaCompiler.compile("p.TestClass2",
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/defineAnonClass/NestedUnsafe2.java
--- a/hotspot/test/runtime/defineAnonClass/NestedUnsafe2.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/defineAnonClass/NestedUnsafe2.java	Thu Sep 22 18:32:20 2016 +0000
@@ -39,7 +39,6 @@
 import java.lang.*;
 import jdk.test.lib.*;
 import jdk.internal.misc.Unsafe;
-import jdk.test.lib.unsafe.UnsafeHelper;
 
 
 // Test that an anonymous class that gets put in its host's package cannot define
@@ -54,7 +53,7 @@
         " } } ");
 
     public static void main(String args[]) throws Exception {
-        Unsafe unsafe = UnsafeHelper.getUnsafe();
+        Unsafe unsafe = Unsafe.getUnsafe();
 
         // The anonymous class calls defineAnonymousClass creating a nested anonymous class.
         byte klassbuf2[] = InMemoryJavaCompiler.compile("TestClass2",
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/jni/checked/TestCheckedJniExceptionCheck.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/jni/checked/TestCheckedJniExceptionCheck.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,209 @@
+/*
+ * 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 8164086
+ * @summary regression tests for 8164086, verify correct warning from checked JNI
+ * @library /test/lib
+ * @modules java.management
+ * @run main/native TestCheckedJniExceptionCheck launch
+ */
+
+import java.util.List;
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+
+public class TestCheckedJniExceptionCheck {
+
+    static {
+        System.loadLibrary("TestCheckedJniExceptionCheck");
+    }
+
+    int callableMethodInvokeCount = 0;
+
+    static final String TEST_START           = "TEST STARTED";
+    static final String EXPECT_WARNING_START = "EXPECT_WARNING_START";
+    static final String EXPECT_WARNING_END   = "EXPECT_WARNING_END";
+
+    static final String JNI_CHECK_EXCEPTION = "WARNING in native method: JNI call made without checking exceptions when required to from";
+
+    static void printExpectWarningStart(int count) {
+        System.out.println(EXPECT_WARNING_START + " " + count);
+    }
+
+    static void printExpectWarningEnd() {
+        System.out.println(EXPECT_WARNING_END);
+    }
+
+    public TestCheckedJniExceptionCheck() {
+        initMethodIds("callableMethod", "()V",
+                      "callableNestedMethod", "(IZ)V");
+        System.out.println(TEST_START);
+    }
+
+    public void test() {
+        testSingleCallNoCheck();
+        testSingleCallCheck();
+        testSingleCallNoCheckMultipleTimes();
+
+        testMultipleCallsNoCheck();
+        testMultipleCallsCheck();
+
+        testNestedSingleCallsNoCheck();
+        testNestedSingleCallsCheck();
+        testNestedMultipleCallsNoCheck();
+        testNestedMultipleCallsCheck();
+    }
+
+    public void testSingleCallNoCheck() {
+        System.out.println("testSingleCallNoCheck start");
+        callJavaFromNative(1, false);
+        System.out.println("testSingleCallNoCheck end");
+    }
+
+    public void testSingleCallCheck() {
+        System.out.println("testSingleCallCheck start");
+        callJavaFromNative(1, true);
+        System.out.println("testSingleCallCheck end");
+    }
+
+    public void testSingleCallNoCheckMultipleTimes() {
+        System.out.println("testSingleCallNoCheckMultipleTimes start");
+        callJavaFromNative(1, false);
+        callJavaFromNative(1, false);
+        System.out.println("testSingleCallNoCheckMultipleTimes end");
+    }
+
+    public void testMultipleCallsNoCheck() {
+        System.out.println("testMultipleCallsNoCheck start");
+        printExpectWarningStart(1);
+        callJavaFromNative(2, false);
+        printExpectWarningEnd();
+        System.out.println("testMultipleCallsNoCheck end");
+    }
+
+    public void testMultipleCallsCheck() {
+        System.out.println("testMultipleCallsCheck start");
+        callJavaFromNative(2, true);
+        System.out.println("testMultipleCallsCheck end");
+    }
+
+    public void testNestedSingleCallsNoCheck() {
+        System.out.println("testNestedSingleCallsNoCheck start");
+        callNestedJavaFromNative(1, false);
+        System.out.println("testNestedSingleCallsNoCheck end");
+    }
+
+    public void testNestedSingleCallsCheck() {
+        System.out.println("testNestedSingleCallsCheck start");
+        callNestedJavaFromNative(1, true);
+        System.out.println("testNestedSingleCallsCheck end");
+    }
+
+    public void testNestedMultipleCallsNoCheck() {
+        System.out.println("testNestedMultipleCallsNoCheck start");
+        printExpectWarningStart(3);
+        callNestedJavaFromNative(2, false);
+        printExpectWarningEnd();
+        System.out.println("testNestedMultipleCallsNoCheck end");
+    }
+
+    public void testNestedMultipleCallsCheck() {
+        System.out.println("testNestedMultipleCallsCheck start");
+        callNestedJavaFromNative(2, true);
+        System.out.println("testNestedMultipleCallsCheck end");
+    }
+
+    public void callableMethod() {
+        callableMethodInvokeCount++;
+    }
+
+    public void callableNestedMethod(int nofCalls, boolean withExceptionChecks) {
+        callJavaFromNative(nofCalls, withExceptionChecks);
+    }
+
+    public native void callJavaFromNative(int nofCalls, boolean withExceptionChecks);
+
+    public native void callNestedJavaFromNative(int nofCalls, boolean withExceptionChecks);
+
+    private native void initMethodIds(String callableMethodName,
+                                      String callableMethodSig,
+                                      String callableNestedMethodName,
+                                      String callableNestedMethodSig);
+
+
+    // Check warnings appear where they should, with start/end statements in output...
+    static void checkOuputForCorrectWarnings(OutputAnalyzer oa) throws RuntimeException {
+        List<String> lines = oa.asLines();
+        int expectedWarnings = 0;
+        int warningCount = 0;
+        int lineNo = 0;
+        boolean testStartLine = false;
+        for (String line : lines) {
+            lineNo++;
+            if (!testStartLine) { // Skip any warning before the actual test itself
+                testStartLine = line.startsWith(TEST_START);
+                continue;
+            }
+            if (line.startsWith(JNI_CHECK_EXCEPTION)) {
+                if (expectedWarnings == 0) {
+                    oa.reportDiagnosticSummary();
+                    throw new RuntimeException("Unexpected warning at line " + lineNo);
+                }
+                warningCount++;
+                if (warningCount > expectedWarnings) {
+                    oa.reportDiagnosticSummary();
+                    throw new RuntimeException("Unexpected warning at line " + lineNo);
+                }
+            }
+            else if (line.startsWith(EXPECT_WARNING_START)) {
+                String countStr = line.substring(EXPECT_WARNING_START.length() + 1);
+                expectedWarnings = Integer.parseInt(countStr);
+            }
+            else if (line.startsWith(EXPECT_WARNING_END)) {
+                if (warningCount != expectedWarnings) {
+                    oa.reportDiagnosticSummary();
+                    throw new RuntimeException("Missing warning at line " + lineNo);
+                }
+                warningCount = 0;
+                expectedWarnings = 0;
+            }
+        }
+        /*
+        System.out.println("Output looks good...");
+        oa.reportDiagnosticSummary();
+        */
+    }
+
+    public static void main(String[] args) throws Throwable {
+        if (args == null || args.length == 0) {
+            new TestCheckedJniExceptionCheck().test();
+            return;
+        }
+
+        // launch and check output
+        checkOuputForCorrectWarnings(ProcessTools.executeTestJvm("-Xcheck:jni",
+                                                                  "TestCheckedJniExceptionCheck"));
+    }
+
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/jni/checked/libTestCheckedJniExceptionCheck.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/jni/checked/libTestCheckedJniExceptionCheck.c	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,98 @@
+/*
+ * 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.
+ */
+
+#include <jni.h>
+
+static jmethodID _callable_method_id;
+static jmethodID _callable_nested_method_id;
+
+static void check_exceptions(JNIEnv *env) {
+  if ((*env)->ExceptionCheck(env)) {
+    (*env)->ExceptionDescribe(env);
+    (*env)->FatalError(env, "Unexpected Exception");
+  }
+}
+
+static jmethodID get_method_id(JNIEnv *env, jclass clz, jstring jname, jstring jsig) {
+  jmethodID mid;
+  const char *name, *sig;
+
+  name = (*env)->GetStringUTFChars(env, jname, NULL);
+  check_exceptions(env);
+
+  sig  = (*env)->GetStringUTFChars(env, jsig, NULL);
+  check_exceptions(env);
+
+  mid  = (*env)->GetMethodID(env, clz, name, sig);
+  check_exceptions(env);
+
+  (*env)->ReleaseStringUTFChars(env, jname, name);
+  (*env)->ReleaseStringUTFChars(env, jsig, sig);
+  return mid;
+}
+
+JNIEXPORT void JNICALL
+Java_TestCheckedJniExceptionCheck_initMethodIds(JNIEnv *env,
+                                                jobject obj,
+                                                jstring callable_method_name,
+                                                jstring callable_method_sig,
+                                                jstring callable_nested_method_name,
+                                                jstring callable_nested_method_sig) {
+  jclass clz = (*env)->GetObjectClass(env, obj);
+
+  _callable_method_id = get_method_id(env, clz,
+                                      callable_method_name,
+                                      callable_method_sig);
+
+  _callable_nested_method_id = get_method_id(env, clz,
+                                             callable_nested_method_name,
+                                             callable_nested_method_sig);
+}
+
+JNIEXPORT void JNICALL
+Java_TestCheckedJniExceptionCheck_callJavaFromNative(JNIEnv *env,
+                                                     jobject obj,
+                                                     jint nofCalls,
+                                                     jboolean checkExceptions) {
+  int i;
+  for (i = 0; i < nofCalls; i++) {
+    (*env)->CallVoidMethod(env, obj, _callable_method_id);
+    if (checkExceptions == JNI_TRUE) {
+      check_exceptions(env);
+    }
+  }
+}
+
+JNIEXPORT void JNICALL
+Java_TestCheckedJniExceptionCheck_callNestedJavaFromNative(JNIEnv *env,
+                                                           jobject obj,
+                                                           jint nofCalls,
+                                                           jboolean checkExceptions) {
+  int i;
+  for (i = 0; i < nofCalls; i++) {
+    (*env)->CallVoidMethod(env, obj, _callable_nested_method_id, nofCalls, checkExceptions);
+    if (checkExceptions == JNI_TRUE) {
+      check_exceptions(env);
+    }
+  }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/modules/ModuleOptionsTest.java
--- a/hotspot/test/runtime/modules/ModuleOptionsTest.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/runtime/modules/ModuleOptionsTest.java	Thu Sep 22 18:32:20 2016 +0000
@@ -24,8 +24,8 @@
 /*
  * @test
  * @bug 8136930
- * @summary Test that the VM only recognizes the last specified --add-modules
- *          and --list-modules options
+ * @summary Test that the VM only recognizes the last specified --list-modules
+ *          options but accumulates --add-module values.
  * @modules java.base/jdk.internal.misc
  * @library /test/lib
  */
@@ -38,14 +38,16 @@
 
     public static void main(String[] args) throws Exception {
 
-        // Test that last --add-modules is the only one recognized.  No exception
-        // should be thrown.
+        // Test that multiple --add-modules options are cumulative, not last one wins.
+        // An exception should be thrown because module i_dont_exist doesn't exist.
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
             "--add-modules=i_dont_exist", "--add-modules=java.base", "-version");
         OutputAnalyzer output = new OutputAnalyzer(pb.start());
-        output.shouldHaveExitValue(0);
+        output.shouldContain("ResolutionException");
+        output.shouldContain("i_dont_exist");
+        output.shouldHaveExitValue(1);
 
-        // Test that last --limit-modules is the only one recognized.  No exception
+        // Test that the last --limit-modules is the only one recognized.  No exception
         // should be thrown.
         pb = ProcessTools.createJavaProcessBuilder(
             "--limit-modules=i_dont_exist", "--limit-modules=java.base", "-version");
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/verifier/popTopTests/PopDupTop.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/verifier/popTopTests/PopDupTop.java	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,64 @@
+/*
+ * 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 8149607
+ * @summary Throw VerifyError when popping a stack element of TOP
+ * @compile popDupSwapTests.jasm
+ * @run main/othervm -Xverify:all PopDupTop
+ */
+
+public class PopDupTop {
+
+    public static void testClass(String class_name, String msg) throws Throwable {
+        try {
+            Class newClass = Class.forName(class_name);
+            throw new RuntimeException("Expected VerifyError exception not thrown for " + msg);
+        } catch (java.lang.VerifyError e) {
+            if (!e.getMessage().contains("Bad type on operand stack")) {
+               throw new RuntimeException(
+                   "Unexpected VerifyError message for " + msg + ": " + e.getMessage());
+            }
+        }
+    }
+
+    public static void main(String args[]) throws Throwable {
+        System.out.println("Regression test for bug 8149607");
+
+        testClass("dup_x1", "dup_x1 of long,ref");
+        testClass("dup2toptop", "dup2 of top,top");
+        testClass("dup2longtop", "dup2 of long,top");
+        testClass("dup2_x1", "dup2_x1 long,ref,ref");
+        testClass("dup2_x2", "dup2_x2 top");
+        testClass("dup2_x2_long_refs", "dup2_x2 long,ref,ref,ref");
+        testClass("poptop", "pop of top");
+        testClass("poptoptop", "pop of top,top");
+        testClass("pop2toptop", "pop2 of top,top");
+        testClass("pop2longtop", "pop2 of long,top");
+        testClass("swaptoptop", "swap of top,top");
+        testClass("swapinttop", "swap of int,top");
+        testClass("swaptopint", "swap of top,int");
+    }
+}
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/runtime/verifier/popTopTests/popDupSwapTests.jasm
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/verifier/popTopTests/popDupSwapTests.jasm	Thu Sep 22 18:32:20 2016 +0000
@@ -0,0 +1,244 @@
+/*
+ * 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 that VerifyError is thrown if dup2_x1 tries to replace the filler slot
+// of a category 2 value.
+// The stack map is long,top,null,null.  The verifier should reject dup2_x1's
+// (form1) attempt to turn the stack map into long,top,null,null,null,null
+public class dup2_x1 version 51:0 {
+    public static Method run:"()V" stack 6 locals 0 {
+        lconst_0;
+        aconst_null;
+        aconst_null;
+        dup2_x1;
+        return;
+    }
+}
+
+
+public class dup2_x2 version 51:0 {
+    public static Method run:"()V" stack 6 locals 0 {
+        iconst_0;
+        lconst_0;
+        aconst_null;
+
+        stack_frame_type full;
+        stack_map int, bogus, bogus, null;
+        locals_map;
+
+        dup2_x2;
+        return;
+    }
+}
+
+
+// Test that VerifyError is thrown if dup2_x2 tries to replace the filler slot
+// of a category 2 value.
+// The stack map is long,top,null,null,null.  The verifier should reject dup2_x2's
+// (form 1) attempt to turn the stack map into long,top,null,null,null,top,null.
+public class dup2_x2_long_refs version 51:0 {
+    public static Method run:"()V" stack 6 locals 0 {
+        lconst_0;
+        aconst_null;
+        aconst_null;
+        aconst_null;
+        dup2_x2;
+        return;
+    }
+}
+
+
+// Test that VerifyError is thrown when dup2 is used to remove the upper
+// half of a category 2 type.
+public class dup2longtop version 51:0 {
+    public static Method main:"([Ljava/lang/String;)V" stack 5 locals 1 {
+        lconst_0;
+        iconst_0;
+        dup2;
+        return;
+    }
+}
+
+
+// Test that VerifyError is thrown when dup2 is used to remove top
+// because top may be the upper half of a category 2 type.
+public class dup2toptop version 51:0 {
+    public static Method main:"([Ljava/lang/String;)V" stack 5 locals 1 {
+        // here we have {long, top, null}
+        // EXECUTION: we have {long, null}
+        lconst_0;
+        aconst_null;
+
+        stack_frame_type full;
+        stack_map bogus, bogus, null;
+        locals_map bogus;
+
+        // VERIFIER: use form1 of dup2 - {top, top, null} -> {top, top, null, top, null}
+        // EXECUTION: have {long, null} - no applicable form of dup2 for such type state by JVMS ch. 6
+        dup2;
+
+        return;
+    }
+}
+
+
+// Test that VerifyError is thrown if dup_x1 tries to replace the filler slot
+// of a category 2 value.
+public class dup_x1 version 51:0 {
+    public static Method run:"()V" stack 6 locals 0 {
+        lconst_0;
+        aconst_null;
+        dup_x1;
+        return;
+    }
+}
+
+
+// Test that VerifyError is thrown when pop2 is used to remove top
+// because top may be the upper half of a category 2 type.
+public class pop2longtop version 51:0
+{
+
+    public Method regular:"()V" stack 6 locals 6
+    {
+        lconst_0;
+        iconst_0;
+        stack_frame_type full;
+        stack_map long, bogus;
+        locals_map;
+        pop2;
+        return;
+    }
+} // end Class pop2longtop
+
+
+
+// Test that VerifyError is thrown when pop2 is used to remove top, top
+// because either top may be the upper half of a category 2 type.
+public class pop2toptop version 51:0
+{
+
+    public Method regular:"()V" stack 6 locals 6
+    {
+        iconst_0;
+        iconst_0;
+        stack_frame_type full;
+        stack_map bogus, bogus;
+        locals_map;
+        pop2;
+        return;
+    }
+} // end Class pop2toptop
+
+
+
+// Test that VerifyError is thrown when pop is used to remove top
+// because top may be the upper half of a category 2 type.
+public class poptop version 51:0
+{
+
+    public Method regular:"()V" stack 2 locals 1
+    {
+        iconst_0;
+        stack_frame_type full;
+        stack_map bogus;
+        pop;
+        return;
+    }
+} // end Class poptop
+
+
+
+// Test that VerifyError is thrown when pop is used to remove top, top
+// because either top may be the upper half of a category 2 type.
+public class poptoptop version 51:0
+{
+
+    public Method regular:"()V" stack 2 locals 1
+    {
+        iconst_0;
+        iconst_0;
+        stack_frame_type full;
+        stack_map bogus, bogus;
+        pop;
+        return;
+    }
+} // end Class poptoptop
+
+
+
+// Test that VerifyError is thrown when swap is used to swap int, top
+// because top may be the lower half of a category 2 type.
+public class swapinttop version 51:0
+{
+
+    public Method regular:"()V" stack 6 locals 6
+    {
+        iconst_0;
+        iconst_0;
+        stack_frame_type full;
+        stack_map int, bogus;
+        locals_map;
+        swap;
+        return;
+    }
+} // end Class swapinttop
+
+
+
+// Test that VerifyError is thrown when swap is used to swap top, int
+// because top may be the upper half of a category 2 type.
+public class swaptopint version 51:0
+{
+
+    public Method regular:"()V" stack 6 locals 6
+    {
+        iconst_0;
+        iconst_0;
+        stack_frame_type full;
+        stack_map bogus, int;
+        locals_map;
+        swap;
+        return;
+    }
+} // end Class swaptopint
+
+
+
+// Test that VerifyError is thrown when swap is used to swap top, top
+// because either top may be the upper half of a category 2 type.
+public class swaptoptop version 51:0
+{
+
+    public Method regular:"()V" stack 6 locals 6
+    {
+        iconst_0;
+        iconst_0;
+        stack_frame_type full;
+        stack_map bogus, bogus;
+        locals_map;
+        swap;
+        return;
+    }
+} // end Class swaptoptop
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/testlibrary/ctw/Makefile
--- a/hotspot/test/testlibrary/ctw/Makefile	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/testlibrary/ctw/Makefile	Thu Sep 22 18:32:20 2016 +0000
@@ -40,7 +40,7 @@
 JAVAC = $(JDK_HOME)/bin/javac
 JAR = $(JDK_HOME)/bin/jar
 
-SRC_FILES = $(shell find $(SRC_DIR) $(TESTLIBRARY_DIR)/share/classes -name '*.java')
+SRC_FILES = $(shell find $(SRC_DIR) $(TESTLIBRARY_DIR)/jdk/test/lib -name '*.java')
 WB_SRC_FILES = $(shell find $(TESTLIBRARY_DIR)/sun/hotspot -name '*.java')
 
 MAIN_CLASS = sun.hotspot.tools.ctw.CompileTheWorld
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/PathHandler.java
--- a/hotspot/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/PathHandler.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/testlibrary/ctw/src/sun/hotspot/tools/ctw/PathHandler.java	Thu Sep 22 18:32:20 2016 +0000
@@ -39,7 +39,7 @@
  * Concrete subclasses should implement method {@link #process()}.
  */
 public abstract class PathHandler {
-    private static final Unsafe UNSAFE = jdk.test.lib.unsafe.UnsafeHelper.getUnsafe();
+    private static final Unsafe UNSAFE = Unsafe.getUnsafe();
     private static final AtomicLong CLASS_COUNT = new AtomicLong(0L);
     private static volatile boolean CLASSES_LIMIT_REACHED = false;
     private static final Pattern JAR_IN_DIR_PATTERN
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/testlibrary/jittester/Makefile
--- a/hotspot/test/testlibrary/jittester/Makefile	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/testlibrary/jittester/Makefile	Thu Sep 22 18:32:20 2016 +0000
@@ -56,7 +56,6 @@
 CLASSES_DIR = $(BUILD_DIR)/classes
 SRC_DIR = src
 TEST_DIR = test
-DRIVER_DIR = $(TESTBASE_DIR)/jdk/test/lib/jittester/jtreg
 MANIFEST = manifest.mf
 APPLICATION_ARGS += \
     --property-file $(PROPERTY_FILE) \
@@ -118,19 +117,18 @@
 	@rm filelist
 	@rm -rf $(CLASSES_DIR)
 
-copytestlibrary: $(DRIVER_DIR)
-	@cp -r src/jdk/test/lib/jittester/jtreg/*.java $(DRIVER_DIR)
+copytestlibrary: $(TESTBASE_DIR)/jdk/test/lib/jittester/jtreg
+	@cp -r src/jdk/test/lib/jittester/jtreg/*.java $(TESTBASE_DIR)/jdk/test/lib/jittester/jtreg
+	@cp -r $(TESTLIBRARY_SRC_DIR) $(TESTBASE_DIR)/jdk/test/
 
 testgroup: $(TESTBASE_DIR)
 	@echo 'jittester_all = \\' > $(TESTGROUP_FILE)
 	@echo '	/' >> $(TESTGROUP_FILE)
 	@echo '' >> $(TESTGROUP_FILE)
-	@echo 'main = \\' >> $(TESTGROUP_FILE)
-	@echo '	Test_0.java' >> $(TESTGROUP_FILE)
 
 testroot: $(TESTBASE_DIR)
 	@echo 'groups=TEST.groups' > $(TESTROOT_FILE)
 
-$(TESTBASE_DIR) $(DIST_DIR) $(DRIVER_DIR):
+$(TESTBASE_DIR) $(DIST_DIR) $(TESTBASE_DIR)/jdk/test/lib/jittester/jtreg:
 	$(shell if [ ! -d $@ ]; then mkdir -p $@; fi)
 
diff -r 4f1591515aef -r b4b4c1119f39 hotspot/test/testlibrary_tests/TestMutuallyExclusivePlatformPredicates.java
--- a/hotspot/test/testlibrary_tests/TestMutuallyExclusivePlatformPredicates.java	Thu Sep 22 16:41:12 2016 +0000
+++ b/hotspot/test/testlibrary_tests/TestMutuallyExclusivePlatformPredicates.java	Thu Sep 22 18:32:20 2016 +0000
@@ -50,8 +50,9 @@
         OS("isAix", "isLinux", "isOSX", "isSolaris", "isWindows"),
         VM_TYPE("isClient", "isServer", "isGraal", "isMinimal", "isZero", "isEmbedded"),
         MODE("isInt", "isMixed", "isComp"),
-        IGNORED("isDebugBuild", "shouldSAAttach",
-                "canPtraceAttachLinux", "canAttachOSX", "isTieredSupported");
+        IGNORED("isDebugBuild", "isFastDebugBuild", "isSlowDebugBuild",
+                "shouldSAAttach", "canPtraceAttachLinux", "canAttachOSX",
+                "isTieredSupported");
 
         public final List<String> methodNames;