jdk8-mips64-public/hotspot: src/share/vm/opto/runtime.hpp@a92cdbac8b9e

7081933: Use zeroing elimination optimization for large array
Summary: Don't zero new typeArray during runtime call if the allocation is followed by arraycopy into it.
Reviewed-by: twisti

     1 /*

     2  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_OPTO_RUNTIME_HPP

    26 #define SHARE_VM_OPTO_RUNTIME_HPP

    28 #include "code/codeBlob.hpp"

    29 #include "opto/machnode.hpp"

    30 #include "opto/type.hpp"

    31 #include "runtime/biasedLocking.hpp"

    32 #include "runtime/deoptimization.hpp"

    33 #include "runtime/vframe.hpp"

    35 //------------------------------OptoRuntime------------------------------------

    36 // Opto compiler runtime routines

    37 //

    38 // These are all generated from Ideal graphs.  They are called with the

    39 // Java calling convention.  Internally they call C++.  They are made once at

    40 // startup time and Opto compiles calls to them later.

    41 // Things are broken up into quads: the signature they will be called with,

    42 // the address of the generated code, the corresponding C++ code and an

    43 // nmethod.

    45 // The signature (returned by "xxx_Type()") is used at startup time by the

    46 // Generator to make the generated code "xxx_Java".  Opto compiles calls

    47 // to the generated code "xxx_Java".  When the compiled code gets executed,

    48 // it calls the C++ code "xxx_C".  The generated nmethod is saved in the

    49 // CodeCache.  Exception handlers use the nmethod to get the callee-save

    50 // register OopMaps.

    51 class CallInfo;

    53 //

    54 // NamedCounters are tagged counters which can be used for profiling

    55 // code in various ways.  Currently they are used by the lock coarsening code

    56 //

    58 class NamedCounter : public CHeapObj {

    59 public:

    60     enum CounterTag {

    61     NoTag,

    62     LockCounter,

    63     EliminatedLockCounter,

    64     BiasedLockingCounter

    65   };

    67 private:

    68   const char *  _name;

    69   int           _count;

    70   CounterTag    _tag;

    71   NamedCounter* _next;

    73  public:

    74   NamedCounter(const char *n, CounterTag tag = NoTag):

    75     _name(n),

    76     _count(0),

    77     _next(NULL),

    78     _tag(tag) {}

    80   const char * name() const     { return _name; }

    81   int count() const             { return _count; }

    82   address addr()                { return (address)&_count; }

    83   CounterTag tag() const        { return _tag; }

    84   void set_tag(CounterTag tag)  { _tag = tag; }

    86   NamedCounter* next() const    { return _next; }

    87   void set_next(NamedCounter* next) {

    88     assert(_next == NULL, "already set");

    89     _next = next;

    90   }

    92 };

    94 class BiasedLockingNamedCounter : public NamedCounter {

    95  private:

    96   BiasedLockingCounters _counters;

    98  public:

    99   BiasedLockingNamedCounter(const char *n) :

   100     NamedCounter(n, BiasedLockingCounter), _counters() {}

   102   BiasedLockingCounters* counters() { return &_counters; }

   103 };

   105 typedef const TypeFunc*(*TypeFunc_generator)();

   107 class OptoRuntime : public AllStatic {

   108   friend class Matcher;  // allow access to stub names

   110  private:

   111   // define stubs

   112   static address generate_stub(ciEnv* ci_env, TypeFunc_generator gen, address C_function, const char *name, int is_fancy_jump, bool pass_tls, bool save_arguments, bool return_pc);

   114   // References to generated stubs

   115   static address _new_instance_Java;

   116   static address _new_array_Java;

   117   static address _new_array_nozero_Java;

   118   static address _multianewarray2_Java;

   119   static address _multianewarray3_Java;

   120   static address _multianewarray4_Java;

   121   static address _multianewarray5_Java;

   122   static address _multianewarrayN_Java;

   123   static address _g1_wb_pre_Java;

   124   static address _g1_wb_post_Java;

   125   static address _vtable_must_compile_Java;

   126   static address _complete_monitor_locking_Java;

   127   static address _rethrow_Java;

   129   static address _slow_arraycopy_Java;

   130   static address _register_finalizer_Java;

   132 # ifdef ENABLE_ZAP_DEAD_LOCALS

   133   static address _zap_dead_Java_locals_Java;

   134   static address _zap_dead_native_locals_Java;

   135 # endif

   138   //

   139   // Implementation of runtime methods

   140   // =================================

   142   // Allocate storage for a Java instance.

   143   static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);

   145   // Allocate storage for a objArray or typeArray

   146   static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);

   147   static void new_array_nozero_C(klassOopDesc* array_klass, int len, JavaThread *thread);

   149   // Post-slow-path-allocation, pre-initializing-stores step for

   150   // implementing ReduceInitialCardMarks

   151   static void new_store_pre_barrier(JavaThread* thread);

   153   // Allocate storage for a multi-dimensional arrays

   154   // Note: needs to be fixed for arbitrary number of dimensions

   155   static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);

   156   static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);

   157   static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread);

   158   static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);

   159   static void multianewarrayN_C(klassOopDesc* klass, arrayOopDesc* dims, JavaThread *thread);

   160   static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread);

   161   static void g1_wb_post_C(void* card_addr, JavaThread* thread);

   163 public:

   164   // Slow-path Locking and Unlocking

   165   static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);

   166   static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);

   168 private:

   170   // Implicit exception support

   171   static void throw_null_exception_C(JavaThread* thread);

   173   // Exception handling

   174   static address handle_exception_C       (JavaThread* thread);

   175   static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);

   176   static address rethrow_C                (oopDesc* exception, JavaThread *thread, address return_pc );

   177   static void deoptimize_caller_frame     (JavaThread *thread, bool doit);

   179   // CodeBlob support

   180   // ===================================================================

   182   static ExceptionBlob*       _exception_blob;

   183   static void generate_exception_blob();

   185   static void register_finalizer(oopDesc* obj, JavaThread* thread);

   187   // zaping dead locals, either from Java frames or from native frames

   188 # ifdef ENABLE_ZAP_DEAD_LOCALS

   189   static void zap_dead_Java_locals_C(   JavaThread* thread);

   190   static void zap_dead_native_locals_C( JavaThread* thread);

   192   static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));

   194  public:

   195    static int ZapDeadCompiledLocals_count;

   197 # endif

   200  public:

   202   static bool is_callee_saved_register(MachRegisterNumbers reg);

   204   // One time only generate runtime code stubs

   205   static void generate(ciEnv* env);

   207   // Returns the name of a stub

   208   static const char* stub_name(address entry);

   210   // access to runtime stubs entry points for java code

   211   static address new_instance_Java()                     { return _new_instance_Java; }

   212   static address new_array_Java()                        { return _new_array_Java; }

   213   static address new_array_nozero_Java()                 { return _new_array_nozero_Java; }

   214   static address multianewarray2_Java()                  { return _multianewarray2_Java; }

   215   static address multianewarray3_Java()                  { return _multianewarray3_Java; }

   216   static address multianewarray4_Java()                  { return _multianewarray4_Java; }

   217   static address multianewarray5_Java()                  { return _multianewarray5_Java; }

   218   static address multianewarrayN_Java()                  { return _multianewarrayN_Java; }

   219   static address g1_wb_pre_Java()                        { return _g1_wb_pre_Java; }

   220   static address g1_wb_post_Java()                       { return _g1_wb_post_Java; }

   221   static address vtable_must_compile_stub()              { return _vtable_must_compile_Java; }

   222   static address complete_monitor_locking_Java()         { return _complete_monitor_locking_Java;   }

   224   static address slow_arraycopy_Java()                   { return _slow_arraycopy_Java; }

   225   static address register_finalizer_Java()               { return _register_finalizer_Java; }

   228 # ifdef ENABLE_ZAP_DEAD_LOCALS

   229   static address zap_dead_locals_stub(bool is_native)    { return is_native

   230                                                                   ? _zap_dead_native_locals_Java

   231                                                                   : _zap_dead_Java_locals_Java; }

   232   static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);

   233 # endif

   235   static ExceptionBlob*    exception_blob()                      { return _exception_blob; }

   237   // Leaf routines helping with method data update

   238   static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);

   240   // Implicit exception support

   241   static void throw_div0_exception_C      (JavaThread* thread);

   242   static void throw_stack_overflow_error_C(JavaThread* thread);

   244   // Exception handling

   245   static address rethrow_stub()             { return _rethrow_Java; }

   248   // Type functions

   249   // ======================================================

   251   static const TypeFunc* new_instance_Type(); // object allocation (slow case)

   252   static const TypeFunc* new_array_Type ();   // [a]newarray (slow case)

   253   static const TypeFunc* multianewarray_Type(int ndim); // multianewarray

   254   static const TypeFunc* multianewarray2_Type(); // multianewarray

   255   static const TypeFunc* multianewarray3_Type(); // multianewarray

   256   static const TypeFunc* multianewarray4_Type(); // multianewarray

   257   static const TypeFunc* multianewarray5_Type(); // multianewarray

   258   static const TypeFunc* multianewarrayN_Type(); // multianewarray

   259   static const TypeFunc* g1_wb_pre_Type();

   260   static const TypeFunc* g1_wb_post_Type();

   261   static const TypeFunc* complete_monitor_enter_Type();

   262   static const TypeFunc* complete_monitor_exit_Type();

   263   static const TypeFunc* uncommon_trap_Type();

   264   static const TypeFunc* athrow_Type();

   265   static const TypeFunc* rethrow_Type();

   266   static const TypeFunc* Math_D_D_Type();  // sin,cos & friends

   267   static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends

   268   static const TypeFunc* modf_Type();

   269   static const TypeFunc* l2f_Type();

   270   static const TypeFunc* current_time_millis_Type();

   272   static const TypeFunc* flush_windows_Type();

   274   // arraycopy routine types

   275   static const TypeFunc* fast_arraycopy_Type(); // bit-blasters

   276   static const TypeFunc* checkcast_arraycopy_Type();

   277   static const TypeFunc* generic_arraycopy_Type();

   278   static const TypeFunc* slow_arraycopy_Type();   // the full routine

   280   static const TypeFunc* array_fill_Type();

   282   // leaf on stack replacement interpreter accessor types

   283   static const TypeFunc* osr_end_Type();

   285   // leaf methodData routine types

   286   static const TypeFunc* profile_receiver_type_Type();

   288   // leaf on stack replacement interpreter accessor types

   289   static const TypeFunc* fetch_int_Type();

   290   static const TypeFunc* fetch_long_Type();

   291   static const TypeFunc* fetch_float_Type();

   292   static const TypeFunc* fetch_double_Type();

   293   static const TypeFunc* fetch_oop_Type();

   294   static const TypeFunc* fetch_monitor_Type();

   296   static const TypeFunc* register_finalizer_Type();

   298   // Dtrace support

   299   static const TypeFunc* dtrace_method_entry_exit_Type();

   300   static const TypeFunc* dtrace_object_alloc_Type();

   302 # ifdef ENABLE_ZAP_DEAD_LOCALS

   303   static const TypeFunc* zap_dead_locals_Type();

   304 # endif

   306  private:

   307  static NamedCounter * volatile _named_counters;

   309  public:

   310  // helper function which creates a named counter labeled with the

   311  // if they are available

   312  static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);

   314  // dumps all the named counters

   315  static void          print_named_counters();

   317 };

   319 #endif // SHARE_VM_OPTO_RUNTIME_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/opto/runtime.hpp@a92cdbac8b9e

src/share/vm/opto/runtime.hpp