jdk8-mips64-public/hotspot: src/cpu/x86/vm/stubRoutines_x86

7153771: array bound check elimination for c1
Summary: when possible optimize out array bound checks, inserting predicates when needed.
Reviewed-by: never, kvn, twisti
Contributed-by: thomaswue <thomas.wuerthinger@oracle.com>

     1 /*

     2  * Copyright (c) 2003, 2012, 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 CPU_X86_VM_STUBROUTINES_X86_64_HPP

    26 #define CPU_X86_VM_STUBROUTINES_X86_64_HPP

    28 // This file holds the platform specific parts of the StubRoutines

    29 // definition. See stubRoutines.hpp for a description on how to

    30 // extend it.

    32 static bool    returns_to_call_stub(address return_pc)   { return return_pc == _call_stub_return_address; }

    34 enum platform_dependent_constants {

    35   code_size1 = 19000,          // simply increase if too small (assembler will crash if too small)

    36   code_size2 = 22000           // simply increase if too small (assembler will crash if too small)

    37 };

    39 class x86 {

    40  friend class StubGenerator;

    42  private:

    43   static address _get_previous_fp_entry;

    44   static address _get_previous_sp_entry;

    45   static address _verify_mxcsr_entry;

    47   static address _f2i_fixup;

    48   static address _f2l_fixup;

    49   static address _d2i_fixup;

    50   static address _d2l_fixup;

    52   static address _float_sign_mask;

    53   static address _float_sign_flip;

    54   static address _double_sign_mask;

    55   static address _double_sign_flip;

    56   static address _mxcsr_std;

    57   // shuffle mask for fixing up 128-bit words consisting of big-endian 32-bit integers

    58   static address _key_shuffle_mask_addr;

    60  public:

    62   static address get_previous_fp_entry()

    63   {

    64     return _get_previous_fp_entry;

    65   }

    67   static address get_previous_sp_entry()

    68   {

    69     return _get_previous_sp_entry;

    70   }

    72   static address verify_mxcsr_entry()

    73   {

    74     return _verify_mxcsr_entry;

    75   }

    77   static address f2i_fixup()

    78   {

    79     return _f2i_fixup;

    80   }

    82   static address f2l_fixup()

    83   {

    84     return _f2l_fixup;

    85   }

    87   static address d2i_fixup()

    88   {

    89     return _d2i_fixup;

    90   }

    92   static address d2l_fixup()

    93   {

    94     return _d2l_fixup;

    95   }

    97   static address float_sign_mask()

    98   {

    99     return _float_sign_mask;

   100   }

   102   static address float_sign_flip()

   103   {

   104     return _float_sign_flip;

   105   }

   107   static address double_sign_mask()

   108   {

   109     return _double_sign_mask;

   110   }

   112   static address double_sign_flip()

   113   {

   114     return _double_sign_flip;

   115   }

   117   static address mxcsr_std()

   118   {

   119     return _mxcsr_std;

   120   }

   122   static address key_shuffle_mask_addr()                     { return _key_shuffle_mask_addr; }

   124 };

   126 #endif // CPU_X86_VM_STUBROUTINES_X86_64_HPP

src/cpu/x86/vm/stubRoutines_x86_64.hpp@46f6f063b272

src/cpu/x86/vm/stubRoutines_x86_64.hpp

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

src/cpu/x86/vm/stubRoutines_x86_64.hpp@46f6f063b272

src/cpu/x86/vm/stubRoutines_x86_64.hpp