jdk8-mips64-public/hotspot: src/share/vm/opto/live.hpp@3d42f82cd811

7063628: Use cbcond on T4
Summary: Add new short branch instruction to Hotspot sparc assembler.
Reviewed-by: never, twisti, jrose

     1 /*

     2  * Copyright (c) 1997, 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_LIVE_HPP

    26 #define SHARE_VM_OPTO_LIVE_HPP

    28 #include "libadt/port.hpp"

    29 #include "libadt/vectset.hpp"

    30 #include "opto/block.hpp"

    31 #include "opto/indexSet.hpp"

    32 #include "opto/phase.hpp"

    33 #include "opto/regmask.hpp"

    35 class Block;

    36 class LRG_List;

    37 class PhaseCFG;

    38 class VectorSet;

    39 class IndexSet;

    41 //------------------------------PhaseLive--------------------------------------

    42 // Compute live-in/live-out

    43 class PhaseLive : public Phase {

    44   // Array of Sets of values live at the start of a block.

    45   // Indexed by block pre-order number.

    46   IndexSet *_live;

    48   // Array of Sets of values defined locally in the block

    49   // Indexed by block pre-order number.

    50   IndexSet *_defs;

    52   // Array of delta-set pointers, indexed by block pre-order number

    53   IndexSet **_deltas;

    54   IndexSet *_free_IndexSet;     // Free list of same

    56   Block_List *_worklist;        // Worklist for iterative solution

    58   const PhaseCFG &_cfg;         // Basic blocks

    59   LRG_List &_names;             // Mapping from Nodes to live ranges

    60   uint _maxlrg;                 // Largest live-range number

    61   Arena *_arena;

    63   IndexSet *getset( Block *p );

    64   IndexSet *getfreeset( );

    65   void freeset( const Block *p );

    66   void add_liveout( Block *p, uint r, VectorSet &first_pass );

    67   void add_liveout( Block *p, IndexSet *lo, VectorSet &first_pass );

    69 public:

    70   PhaseLive( const PhaseCFG &cfg, LRG_List &names, Arena *arena );

    71   ~PhaseLive() {}

    72   // Compute liveness info

    73   void compute(uint maxlrg);

    74   // Reset arena storage

    75   void reset() { _live = NULL; }

    77   // Return the live-out set for this block

    78   IndexSet *live( const Block * b ) { return &_live[b->_pre_order-1]; }

    80 #ifndef PRODUCT

    81   void dump( const Block *b ) const;

    82   void stats(uint iters) const;

    83 #endif

    84 };

    86 #endif // SHARE_VM_OPTO_LIVE_HPP

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