jdk8-mips64-public/hotspot: src/cpu/ppc/vm/vm_version

8154156: PPC64: improve array copy stubs by using vector instructions
Reviewed-by: goetz, mdoerr
Contributed-by: Kazunori Ogata <ogatak@jp.ibm.com>

     1 /*

     2  * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2012, 2018 SAP AG. All rights reserved.

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

     5  *

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

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

     8  * published by the Free Software Foundation.

     9  *

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

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

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

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

    14  * accompanied this code).

    15  *

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

    17  * 2 along with this work; if not, write to the Free Software Foundation,

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

    19  *

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

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

    22  * questions.

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    24  */

    26 #ifndef CPU_PPC_VM_VM_VERSION_PPC_HPP

    27 #define CPU_PPC_VM_VM_VERSION_PPC_HPP

    29 #include "runtime/globals_extension.hpp"

    30 #include "runtime/vm_version.hpp"

    32 class VM_Version: public Abstract_VM_Version {

    33 protected:

    34   enum Feature_Flag {

    35     fsqrt,

    36     fsqrts,

    37     isel,

    38     lxarxeh,

    39     cmpb,

    40     popcntb,

    41     popcntw,

    42     fcfids,

    43     vand,

    44     dcba,

    45     lqarx,

    46     vcipher,

    47     vpmsumb,

    48     mfdscr,

    49     vsx,

    50     num_features // last entry to count features

    51   };

    52   enum Feature_Flag_Set {

    53     unknown_m             = 0,

    54     fsqrt_m               = (1 << fsqrt  ),

    55     fsqrts_m              = (1 << fsqrts ),

    56     isel_m                = (1 << isel   ),

    57     lxarxeh_m             = (1 << lxarxeh),

    58     cmpb_m                = (1 << cmpb   ),

    59     popcntb_m             = (1 << popcntb),

    60     popcntw_m             = (1 << popcntw),

    61     fcfids_m              = (1 << fcfids ),

    62     vand_m                = (1 << vand   ),

    63     dcba_m                = (1 << dcba   ),

    64     lqarx_m               = (1 << lqarx  ),

    65     vcipher_m             = (1 << vcipher),

    66     vpmsumb_m             = (1 << vpmsumb),

    67     mfdscr_m              = (1 << mfdscr ),

    68     vsx_m                 = (1 << vsx    ),

    69     all_features_m        = -1

    70   };

    71   static int  _features;

    72   static int  _measured_cache_line_size;

    73   static const char* _features_str;

    74   static bool _is_determine_features_test_running;

    76   static void print_features();

    77   static void determine_features(); // also measures cache line size

    78   static void config_dscr(); // Power 8: Configure Data Stream Control Register.

    79   static void determine_section_size();

    80   static void power6_micro_bench();

    81 public:

    82   // Initialization

    83   static void initialize();

    85   static bool is_determine_features_test_running() { return _is_determine_features_test_running; }

    86   // CPU instruction support

    87   static bool has_fsqrt()   { return (_features & fsqrt_m) != 0; }

    88   static bool has_fsqrts()  { return (_features & fsqrts_m) != 0; }

    89   static bool has_isel()    { return (_features & isel_m) != 0; }

    90   static bool has_lxarxeh() { return (_features & lxarxeh_m) !=0; }

    91   static bool has_cmpb()    { return (_features & cmpb_m) != 0; }

    92   static bool has_popcntb() { return (_features & popcntb_m) != 0; }

    93   static bool has_popcntw() { return (_features & popcntw_m) != 0; }

    94   static bool has_fcfids()  { return (_features & fcfids_m) != 0; }

    95   static bool has_vand()    { return (_features & vand_m) != 0; }

    96   static bool has_dcba()    { return (_features & dcba_m) != 0; }

    97   static bool has_lqarx()   { return (_features & lqarx_m) != 0; }

    98   static bool has_vcipher() { return (_features & vcipher_m) != 0; }

    99   static bool has_vpmsumb() { return (_features & vpmsumb_m) != 0; }

   100   static bool has_mfdscr()  { return (_features & mfdscr_m) != 0; }

   101   static bool has_vsx()     { return (_features & vsx_m) != 0; }

   103   static const char* cpu_features() { return _features_str; }

   105   static int get_cache_line_size()  { return _measured_cache_line_size; }

   107   // Assembler testing

   108   static void allow_all();

   109   static void revert();

   111   // POWER 8: DSCR current value.

   112   static uint64_t _dscr_val;

   113 };

   115 #endif // CPU_PPC_VM_VM_VERSION_PPC_HPP

src/cpu/ppc/vm/vm_version_ppc.hpp@6eedcffa129d