jdk8-mips64-public/hotspot: src/share/vm/opto/locknode.hpp@6dbf1a175d6b

6672848: (Escape Analysis) improve lock elimination with EA
Summary: Remove lock/unlock MemBar nodes and specify locks in debug info for deoptimization.
Reviewed-by: never

     1 /*

     2  * Copyright 1999-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 //------------------------------BoxLockNode------------------------------------

    26 class BoxLockNode : public Node {

    27 public:

    28   const int _slot;

    29   RegMask   _inmask;

    30   bool _is_eliminated;    // indicates this lock was safely eliminated

    32   BoxLockNode( int lock );

    33   virtual int Opcode() const;

    34   virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const;

    35   virtual uint size(PhaseRegAlloc *ra_) const;

    36   virtual const RegMask &in_RegMask(uint) const;

    37   virtual const RegMask &out_RegMask() const;

    38   virtual uint size_of() const;

    39   virtual uint hash() const { return Node::hash() + _slot; }

    40   virtual uint cmp( const Node &n ) const;

    41   virtual const class Type *bottom_type() const { return TypeRawPtr::BOTTOM; }

    42   virtual uint ideal_reg() const { return Op_RegP; }

    44   static OptoReg::Name stack_slot(Node* box_node);

    46   bool is_eliminated()  { return _is_eliminated; }

    47   // mark lock as eliminated.

    48   void set_eliminated() { _is_eliminated = true; }

    50 #ifndef PRODUCT

    51   virtual void format( PhaseRegAlloc *, outputStream *st ) const;

    52   virtual void dump_spec(outputStream *st) const { st->print("  Lock %d",_slot); }

    53 #endif

    54 };

    56 //------------------------------FastLockNode-----------------------------------

    57 class FastLockNode: public CmpNode {

    58 private:

    59   BiasedLockingCounters* _counters;

    61 public:

    62   FastLockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {

    63     init_req(0,ctrl);

    64     init_class_id(Class_FastLock);

    65     _counters = NULL;

    66   }

    67   Node* obj_node() const { return in(1); }

    68   Node* box_node() const { return in(2); }

    70   // FastLock and FastUnlockNode do not hash, we need one for each correspoding

    71   // LockNode/UnLockNode to avoid creating Phi's.

    72   virtual uint hash() const ;                  // { return NO_HASH; }

    73   virtual uint cmp( const Node &n ) const ;    // Always fail, except on self

    74   virtual int Opcode() const;

    75   virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }

    76   const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}

    78   void create_lock_counter(JVMState* s);

    79   BiasedLockingCounters* counters() const { return _counters; }

    80 };

    83 //------------------------------FastUnlockNode---------------------------------

    84 class FastUnlockNode: public CmpNode {

    85 public:

    86   FastUnlockNode(Node *ctrl, Node *oop, Node *box) : CmpNode(oop,box) {

    87     init_req(0,ctrl);

    88     init_class_id(Class_FastUnlock);

    89   }

    90   Node* obj_node() const { return in(1); }

    91   Node* box_node() const { return in(2); }

    94   // FastLock and FastUnlockNode do not hash, we need one for each correspoding

    95   // LockNode/UnLockNode to avoid creating Phi's.

    96   virtual uint hash() const ;                  // { return NO_HASH; }

    97   virtual uint cmp( const Node &n ) const ;    // Always fail, except on self

    98   virtual int Opcode() const;

    99   virtual const Type *Value( PhaseTransform *phase ) const { return TypeInt::CC; }

   100   const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;}

   102 };

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

src/share/vm/opto/locknode.hpp@6dbf1a175d6b

src/share/vm/opto/locknode.hpp