7174218: remove AtomicLongCSImpl intrinsics

Reviewed-by: kvn, twisti
Contributed-by: NKrystal Mok <sajia@taobao.com>

src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp

@@ -644,30 +644,6 @@ void LIRGenerator::do_CompareOp(CompareOp* x) {
 }
 
 
-void LIRGenerator::do_AttemptUpdate(Intrinsic* x) {
-  assert(x->number_of_arguments() == 3, "wrong type");
-  LIRItem obj       (x->argument_at(0), this);  // AtomicLong object
-  LIRItem cmp_value (x->argument_at(1), this);  // value to compare with field
-  LIRItem new_value (x->argument_at(2), this);  // replace field with new_value if it matches cmp_value
-
-  obj.load_item();
-  cmp_value.load_item();
-  new_value.load_item();
-
-  // generate compare-and-swap and produce zero condition if swap occurs
-  int value_offset = sun_misc_AtomicLongCSImpl::value_offset();
-  LIR_Opr addr = FrameMap::O7_opr;
-  __ add(obj.result(), LIR_OprFact::intConst(value_offset), addr);
-  LIR_Opr t1 = FrameMap::G1_opr;  // temp for 64-bit value
-  LIR_Opr t2 = FrameMap::G3_opr;  // temp for 64-bit value
-  __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2);
-
-  // generate conditional move of boolean result
-  LIR_Opr result = rlock_result(x);
-  __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result, T_LONG);
-}
-
-
 void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) {
   assert(x->number_of_arguments() == 4, "wrong type");
   LIRItem obj   (x->argument_at(0), this);  // object

src/cpu/sparc/vm/sparc.ad

@@ -827,7 +827,6 @@ void emit_form3_mem_reg(CodeBuffer &cbuf, const MachNode* n, int primary, int te
       // a Load
       // inputs are (0:control, 1:memory, 2:address)
       if (!(n->ideal_Opcode()==ld_op)       && // Following are special cases
-          !(n->ideal_Opcode()==Op_LoadLLocked && ld_op==Op_LoadI) &&
           !(n->ideal_Opcode()==Op_LoadPLocked && ld_op==Op_LoadP) &&
           !(n->ideal_Opcode()==Op_LoadI     && ld_op==Op_LoadF) &&
           !(n->ideal_Opcode()==Op_LoadF     && ld_op==Op_LoadI) &&
@@ -7306,17 +7305,6 @@ instruct loadPLocked(iRegP dst, memory mem) %{
   ins_pipe(iload_mem);
 %}
 
-// LoadL-locked.  Same as a regular long load when used with a compare-swap
-instruct loadLLocked(iRegL dst, memory mem) %{
-  match(Set dst (LoadLLocked mem));
-  ins_cost(MEMORY_REF_COST);
-  size(4);
-  format %{ "LDX    $mem,$dst\t! long" %}
-  opcode(Assembler::ldx_op3);
-  ins_encode(simple_form3_mem_reg( mem, dst ) );
-  ins_pipe(iload_mem);
-%}
-
 instruct storePConditional( iRegP heap_top_ptr, iRegP oldval, g3RegP newval, flagsRegP pcc ) %{
   match(Set pcc (StorePConditional heap_top_ptr (Binary oldval newval)));
   effect( KILL newval );

src/cpu/x86/vm/c1_LIRGenerator_x86.cpp

@@ -718,35 +718,6 @@ void LIRGenerator::do_CompareOp(CompareOp* x) {
 }
 
 
-void LIRGenerator::do_AttemptUpdate(Intrinsic* x) {
-  assert(x->number_of_arguments() == 3, "wrong type");
-  LIRItem obj       (x->argument_at(0), this);  // AtomicLong object
-  LIRItem cmp_value (x->argument_at(1), this);  // value to compare with field
-  LIRItem new_value (x->argument_at(2), this);  // replace field with new_value if it matches cmp_value
-
-  // compare value must be in rdx,eax (hi,lo); may be destroyed by cmpxchg8 instruction
-  cmp_value.load_item_force(FrameMap::long0_opr);
-
-  // new value must be in rcx,ebx (hi,lo)
-  new_value.load_item_force(FrameMap::long1_opr);
-
-  // object pointer register is overwritten with field address
-  obj.load_item();
-
-  // generate compare-and-swap; produces zero condition if swap occurs
-  int value_offset = sun_misc_AtomicLongCSImpl::value_offset();
-  LIR_Opr addr = new_pointer_register();
-  __ leal(LIR_OprFact::address(new LIR_Address(obj.result(), value_offset, T_LONG)), addr);
-  LIR_Opr t1 = LIR_OprFact::illegalOpr;  // no temp needed
-  LIR_Opr t2 = LIR_OprFact::illegalOpr;  // no temp needed
-  __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2);
-
-  // generate conditional move of boolean result
-  LIR_Opr result = rlock_result(x);
-  __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result, T_LONG);
-}
-
-
 void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) {
   assert(x->number_of_arguments() == 4, "wrong type");
   LIRItem obj   (x->argument_at(0), this);  // object

src/cpu/x86/vm/x86_32.ad

@@ -7800,50 +7800,6 @@ instruct loadPLocked(eRegP dst, memory mem) %{
   ins_pipe( ialu_reg_mem );
 %}
 
-// LoadLong-locked - same as a volatile long load when used with compare-swap
-instruct loadLLocked(stackSlotL dst, memory mem) %{
-  predicate(UseSSE<=1);
-  match(Set dst (LoadLLocked mem));
-
-  ins_cost(200);
-  format %{ "FILD   $mem\t# Atomic volatile long load\n\t"
-            "FISTp  $dst" %}
-  ins_encode(enc_loadL_volatile(mem,dst));
-  ins_pipe( fpu_reg_mem );
-%}
-
-instruct loadLX_Locked(stackSlotL dst, memory mem, regD tmp) %{
-  predicate(UseSSE>=2);
-  match(Set dst (LoadLLocked mem));
-  effect(TEMP tmp);
-  ins_cost(180);
-  format %{ "MOVSD  $tmp,$mem\t# Atomic volatile long load\n\t"
-            "MOVSD  $dst,$tmp" %}
-  ins_encode %{
-    __ movdbl($tmp$$XMMRegister, $mem$$Address);
-    __ movdbl(Address(rsp, $dst$$disp), $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
-instruct loadLX_reg_Locked(eRegL dst, memory mem, regD tmp) %{
-  predicate(UseSSE>=2);
-  match(Set dst (LoadLLocked mem));
-  effect(TEMP tmp);
-  ins_cost(160);
-  format %{ "MOVSD  $tmp,$mem\t# Atomic volatile long load\n\t"
-            "MOVD   $dst.lo,$tmp\n\t"
-            "PSRLQ  $tmp,32\n\t"
-            "MOVD   $dst.hi,$tmp" %}
-  ins_encode %{
-    __ movdbl($tmp$$XMMRegister, $mem$$Address);
-    __ movdl($dst$$Register, $tmp$$XMMRegister);
-    __ psrlq($tmp$$XMMRegister, 32);
-    __ movdl(HIGH_FROM_LOW($dst$$Register), $tmp$$XMMRegister);
-  %}
-  ins_pipe( pipe_slow );
-%}
-
 // Conditional-store of the updated heap-top.
 // Used during allocation of the shared heap.
 // Sets flags (EQ) on success.  Implemented with a CMPXCHG on Intel.

src/cpu/x86/vm/x86_64.ad

@@ -7497,18 +7497,6 @@ instruct loadPLocked(rRegP dst, memory mem)
   ins_pipe(ialu_reg_mem); // XXX
 %}
 
-// LoadL-locked - same as a regular LoadL when used with compare-swap
-instruct loadLLocked(rRegL dst, memory mem)
-%{
-  match(Set dst (LoadLLocked mem));
-
-  ins_cost(125); // XXX
-  format %{ "movq    $dst, $mem\t# long locked" %}
-  opcode(0x8B);
-  ins_encode(REX_reg_mem_wide(dst, mem), OpcP, reg_mem(dst, mem));
-  ins_pipe(ialu_reg_mem); // XXX
-%}
-
 // Conditional-store of the updated heap-top.
 // Used during allocation of the shared heap.
 // Sets flags (EQ) on success.  Implemented with a CMPXCHG on Intel.

src/share/vm/adlc/forms.cpp

@@ -261,7 +261,6 @@ Form::DataType Form::is_load_from_memory(const char *opType) const {
   if( strcmp(opType,"LoadL")==0 )  return Form::idealL;
   if( strcmp(opType,"LoadL_unaligned")==0 )  return Form::idealL;
   if( strcmp(opType,"LoadPLocked")==0 )  return Form::idealP;
-  if( strcmp(opType,"LoadLLocked")==0 )  return Form::idealL;
   if( strcmp(opType,"LoadP")==0 )  return Form::idealP;
   if( strcmp(opType,"LoadN")==0 )  return Form::idealN;
   if( strcmp(opType,"LoadRange")==0 )  return Form::idealI;

src/share/vm/adlc/formssel.cpp

@@ -3387,7 +3387,7 @@ int MatchNode::needs_ideal_memory_edge(FormDict &globals) const {
     "Load4I" ,"Load2I" ,"Load2L" ,"Load2D" ,"Load4F" ,"Load2F" ,"Load16B" ,
     "Load8B" ,"Load4B" ,"Load8C" ,"Load4C" ,"Load2C" ,"Load8S", "Load4S","Load2S",
     "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned",
-    "LoadPLocked", "LoadLLocked",
+    "LoadPLocked",
     "StorePConditional", "StoreIConditional", "StoreLConditional",
     "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN",
     "StoreCM",

src/share/vm/c1/c1_GraphBuilder.cpp

@@ -3195,13 +3195,6 @@ bool GraphBuilder::try_inline_intrinsics(ciMethod* callee) {
       preserves_state = true;
       break;
 
-    // sun/misc/AtomicLong.attemptUpdate
-    case vmIntrinsics::_attemptUpdate :
-      if (!VM_Version::supports_cx8()) return false;
-      if (!InlineAtomicLong) return false;
-      preserves_state = true;
-      break;
-
     // Use special nodes for Unsafe instructions so we can more easily
     // perform an address-mode optimization on the raw variants
     case vmIntrinsics::_getObject : return append_unsafe_get_obj(callee, T_OBJECT,  false);

src/share/vm/c1/c1_LIRGenerator.cpp

@@ -3009,11 +3009,6 @@ void LIRGenerator::do_Intrinsic(Intrinsic* x) {
     do_CompareAndSwap(x, longType);
     break;
 
-    // sun.misc.AtomicLongCSImpl.attemptUpdate
-  case vmIntrinsics::_attemptUpdate:
-    do_AttemptUpdate(x);
-    break;
-
   case vmIntrinsics::_Reference_get:
     do_Reference_get(x);
     break;
@@ -3254,4 +3249,3 @@ void LIRGenerator::do_MemBar(MemBar* x) {
     }
   }
 }
-

src/share/vm/c1/c1_LIRGenerator.hpp

@@ -244,7 +244,6 @@ class LIRGenerator: public InstructionVisitor, public BlockClosure {
   void do_MathIntrinsic(Intrinsic* x);
   void do_ArrayCopy(Intrinsic* x);
   void do_CompareAndSwap(Intrinsic* x, ValueType* type);
-  void do_AttemptUpdate(Intrinsic* x);
   void do_NIOCheckIndex(Intrinsic* x);
   void do_FPIntrinsics(Intrinsic* x);
   void do_Reference_get(Intrinsic* x);

src/share/vm/classfile/javaClasses.cpp

@@ -2919,7 +2919,6 @@ int java_lang_AssertionStatusDirectives::packages_offset;
 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
 int java_lang_AssertionStatusDirectives::deflt_offset;
 int java_nio_Buffer::_limit_offset;
-int sun_misc_AtomicLongCSImpl::_value_offset;
 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
 int sun_reflect_ConstantPool::_cp_oop_offset;
 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
@@ -2979,21 +2978,6 @@ void java_nio_Buffer::compute_offsets() {
   compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
 }
 
-// Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate
-int sun_misc_AtomicLongCSImpl::value_offset() {
-  assert(SystemDictionary::AtomicLongCSImpl_klass() != NULL, "can't call this");
-  return _value_offset;
-}
-
-
-void sun_misc_AtomicLongCSImpl::compute_offsets() {
-  klassOop k = SystemDictionary::AtomicLongCSImpl_klass();
-  // If this class is not present, its value field offset won't be referenced.
-  if (k != NULL) {
-    compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature());
-  }
-}
-
 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
   if (_owner_offset != 0) return;
 
@@ -3098,7 +3082,6 @@ void JavaClasses::compute_offsets() {
     sun_reflect_ConstantPool::compute_offsets();
     sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
   }
-  sun_misc_AtomicLongCSImpl::compute_offsets();
 
   // generated interpreter code wants to know about the offsets we just computed:
   AbstractAssembler::update_delayed_values();

src/share/vm/classfile/javaClasses.hpp

@@ -1383,15 +1383,6 @@ class java_nio_Buffer: AllStatic {
   static void compute_offsets();
 };
 
-class sun_misc_AtomicLongCSImpl: AllStatic {
- private:
-  static int _value_offset;
-
- public:
-  static int  value_offset();
-  static void compute_offsets();
-};
-
 class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
  private:
   static int  _owner_offset;

src/share/vm/classfile/systemDictionary.hpp

@@ -170,9 +170,6 @@ class SymbolPropertyTable;
   /* It's okay if this turns out to be NULL in non-1.4 JDKs. */               \
   template(nio_Buffer_klass,             java_nio_Buffer,                Opt) \
                                                                               \
-  /* If this class isn't present, it won't be referenced. */                  \
-  template(AtomicLongCSImpl_klass,       sun_misc_AtomicLongCSImpl,   Opt)    \
-                                                                              \
   template(DownloadManager_klass,        sun_jkernel_DownloadManager, Opt_Kernel) \
                                                                               \
   template(PostVMInitHook_klass,         sun_misc_PostVMInitHook, Opt)        \

src/share/vm/classfile/vmSymbols.hpp

@@ -722,15 +722,6 @@
   /* java/lang/ref/Reference */                                                                                         \
   do_intrinsic(_Reference_get,            java_lang_ref_Reference, get_name,    void_object_signature, F_R)             \
                                                                                                                         \
-                                                                                                                        \
-  do_class(sun_misc_AtomicLongCSImpl,     "sun/misc/AtomicLongCSImpl")                                                  \
-  do_intrinsic(_get_AtomicLong,           sun_misc_AtomicLongCSImpl, get_name, void_long_signature,              F_R)   \
-  /*   (symbols get_name and void_long_signature defined above) */                                                      \
-                                                                                                                        \
-  do_intrinsic(_attemptUpdate,            sun_misc_AtomicLongCSImpl, attemptUpdate_name, attemptUpdate_signature, F_R)  \
-   do_name(     attemptUpdate_name,                                 "attemptUpdate")                                    \
-   do_signature(attemptUpdate_signature,                            "(JJ)Z")                                            \
-                                                                                                                        \
   /* support for sun.misc.Unsafe */                                                                                     \
   do_class(sun_misc_Unsafe,               "sun/misc/Unsafe")                                                            \
                                                                                                                         \

src/share/vm/opto/classes.hpp

@@ -147,7 +147,6 @@ macro(LoadNKlass)
 macro(LoadL)
 macro(LoadL_unaligned)
 macro(LoadPLocked)
-macro(LoadLLocked)
 macro(LoadP)
 macro(LoadN)
 macro(LoadRange)

src/share/vm/opto/compile.cpp

@@ -2297,7 +2297,6 @@ static void final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc ) {
   case Op_LoadL:
   case Op_LoadL_unaligned:
   case Op_LoadPLocked:
-  case Op_LoadLLocked:
   case Op_LoadP:
   case Op_LoadN:
   case Op_LoadRange:

src/share/vm/opto/library_call.cpp

@@ -192,8 +192,6 @@ class LibraryCallKit : public GraphKit {
   void copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array, bool card_mark);
   bool inline_native_clone(bool is_virtual);
   bool inline_native_Reflection_getCallerClass();
-  bool inline_native_AtomicLong_get();
-  bool inline_native_AtomicLong_attemptUpdate();
   bool is_method_invoke_or_aux_frame(JVMState* jvms);
   // Helper function for inlining native object hash method
   bool inline_native_hashcode(bool is_virtual, bool is_static);
@@ -331,11 +329,6 @@ CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) {
     // We do not intrinsify this.  The optimizer does fine with it.
     return NULL;
 
-  case vmIntrinsics::_get_AtomicLong:
-  case vmIntrinsics::_attemptUpdate:
-    if (!InlineAtomicLong)  return NULL;
-    break;
-
   case vmIntrinsics::_getCallerClass:
     if (!UseNewReflection)  return NULL;
     if (!InlineReflectionGetCallerClass)  return NULL;
@@ -711,11 +704,6 @@ bool LibraryCallKit::try_to_inline() {
   case vmIntrinsics::_reverseBytes_c:
     return inline_reverseBytes((vmIntrinsics::ID) intrinsic_id());
 
-  case vmIntrinsics::_get_AtomicLong:
-    return inline_native_AtomicLong_get();
-  case vmIntrinsics::_attemptUpdate:
-    return inline_native_AtomicLong_attemptUpdate();
-
   case vmIntrinsics::_getCallerClass:
     return inline_native_Reflection_getCallerClass();
 
@@ -4006,113 +3994,6 @@ bool LibraryCallKit::is_method_invoke_or_aux_frame(JVMState* jvms) {
   return false;
 }
 
-static int value_field_offset = -1;  // offset of the "value" field of AtomicLongCSImpl.  This is needed by
-                                     // inline_native_AtomicLong_attemptUpdate() but it has no way of
-                                     // computing it since there is no lookup field by name function in the
-                                     // CI interface.  This is computed and set by inline_native_AtomicLong_get().
-                                     // Using a static variable here is safe even if we have multiple compilation
-                                     // threads because the offset is constant.  At worst the same offset will be
-                                     // computed and  stored multiple
-
-bool LibraryCallKit::inline_native_AtomicLong_get() {
-  // Restore the stack and pop off the argument
-  _sp+=1;
-  Node *obj = pop();
-
-  // get the offset of the "value" field. Since the CI interfaces
-  // does not provide a way to look up a field by name, we scan the bytecodes
-  // to get the field index.  We expect the first 2 instructions of the method
-  // to be:
-  //    0 aload_0
-  //    1 getfield "value"
-  ciMethod* method = callee();
-  if (value_field_offset == -1)
-  {
-    ciField* value_field;
-    ciBytecodeStream iter(method);
-    Bytecodes::Code bc = iter.next();
-
-    if ((bc != Bytecodes::_aload_0) &&
-              ((bc != Bytecodes::_aload) || (iter.get_index() != 0)))
-      return false;
-    bc = iter.next();
-    if (bc != Bytecodes::_getfield)
-      return false;
-    bool ignore;
-    value_field = iter.get_field(ignore);
-    value_field_offset = value_field->offset_in_bytes();
-  }
-
-  // Null check without removing any arguments.
-  _sp++;
-  obj = do_null_check(obj, T_OBJECT);
-  _sp--;
-  // Check for locking null object
-  if (stopped()) return true;
-
-  Node *adr = basic_plus_adr(obj, obj, value_field_offset);
-  const TypePtr *adr_type = _gvn.type(adr)->is_ptr();
-  int alias_idx = C->get_alias_index(adr_type);
-
-  Node *result = _gvn.transform(new (C, 3) LoadLLockedNode(control(), memory(alias_idx), adr));
-
-  push_pair(result);
-
-  return true;
-}
-
-bool LibraryCallKit::inline_native_AtomicLong_attemptUpdate() {
-  // Restore the stack and pop off the arguments
-  _sp+=5;
-  Node *newVal = pop_pair();
-  Node *oldVal = pop_pair();
-  Node *obj = pop();
-
-  // we need the offset of the "value" field which was computed when
-  // inlining the get() method.  Give up if we don't have it.
-  if (value_field_offset == -1)
-    return false;
-
-  // Null check without removing any arguments.
-  _sp+=5;
-  obj = do_null_check(obj, T_OBJECT);
-  _sp-=5;
-  // Check for locking null object
-  if (stopped()) return true;
-
-  Node *adr = basic_plus_adr(obj, obj, value_field_offset);
-  const TypePtr *adr_type = _gvn.type(adr)->is_ptr();
-  int alias_idx = C->get_alias_index(adr_type);
-
-  Node *cas = _gvn.transform(new (C, 5) StoreLConditionalNode(control(), memory(alias_idx), adr, newVal, oldVal));
-  Node *store_proj = _gvn.transform( new (C, 1) SCMemProjNode(cas));
-  set_memory(store_proj, alias_idx);
-  Node *bol = _gvn.transform( new (C, 2) BoolNode( cas, BoolTest::eq ) );
-
-  Node *result;
-  // CMove node is not used to be able fold a possible check code
-  // after attemptUpdate() call. This code could be transformed
-  // into CMove node by loop optimizations.
-  {
-    RegionNode *r = new (C, 3) RegionNode(3);
-    result = new (C, 3) PhiNode(r, TypeInt::BOOL);
-
-    Node *iff = create_and_xform_if(control(), bol, PROB_FAIR, COUNT_UNKNOWN);
-    Node *iftrue = opt_iff(r, iff);
-    r->init_req(1, iftrue);
-    result->init_req(1, intcon(1));
-    result->init_req(2, intcon(0));
-
-    set_control(_gvn.transform(r));
-    record_for_igvn(r);
-
-    C->set_has_split_ifs(true); // Has chance for split-if optimization
-  }
-
-  push(_gvn.transform(result));
-  return true;
-}
-
 bool LibraryCallKit::inline_fp_conversions(vmIntrinsics::ID id) {
   // restore the arguments
   _sp += arg_size();

src/share/vm/opto/memnode.hpp

@@ -636,17 +636,6 @@ public:
   virtual bool depends_only_on_test() const { return true; }
 };
 
-//------------------------------LoadLLockedNode---------------------------------
-// Load-locked a pointer from memory (either object or array).
-// On Sparc & Intel this is implemented as a normal long load.
-class LoadLLockedNode : public LoadLNode {
-public:
-  LoadLLockedNode( Node *c, Node *mem, Node *adr )
-    : LoadLNode(c,mem,adr,TypeRawPtr::BOTTOM, TypeLong::LONG) {}
-  virtual int Opcode() const;
-  virtual int store_Opcode() const { return Op_StoreLConditional; }
-};
-
 //------------------------------SCMemProjNode---------------------------------------
 // This class defines a projection of the memory  state of a store conditional node.
 // These nodes return a value, but also update memory.

src/share/vm/prims/jvm.h

@@ -634,7 +634,7 @@ JNIEXPORT jobject JNICALL
 JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused);
 
 /*
- * sun.misc.AtomicLong
+ * java.util.concurrent.atomic.AtomicLong
  */
 JNIEXPORT jboolean JNICALL
 JVM_SupportsCX8(void);

src/share/vm/runtime/globals.hpp

@@ -631,9 +631,6 @@ class CommandLineFlags {
   develop(bool, InlineClassNatives, true,                                   \
           "inline Class.isInstance, etc")                                   \
                                                                             \
-  develop(bool, InlineAtomicLong, true,                                     \
-          "inline sun.misc.AtomicLong")                                     \
-                                                                            \
   develop(bool, InlineThreadNatives, true,                                  \
           "inline Thread.currentThread, etc")                               \
                                                                             \

src/share/vm/runtime/vmStructs.cpp

@@ -1876,7 +1876,6 @@ static inline uint64_t cast_uint64_t(size_t x)
   declare_c2_type(StoreNNode, StoreNode)                                  \
   declare_c2_type(StoreCMNode, StoreNode)                                 \
   declare_c2_type(LoadPLockedNode, LoadPNode)                             \
-  declare_c2_type(LoadLLockedNode, LoadLNode)                             \
   declare_c2_type(SCMemProjNode, ProjNode)                                \
   declare_c2_type(LoadStoreNode, Node)                                    \
   declare_c2_type(StorePConditionalNode, LoadStoreNode)                   \