src/hotspot/cpu/ppc/stubRoutines_ppc.hpp

rev 53302 : 8216060: [PPC64] Vector CRC implementation should be used by interpreter and be faster for short arrays
Reviewed-by: gromero, goetz

*** 1,8 ****
  /*
   * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2012, 2018, SAP SE. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,8 ----
  /*
   * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
!  * Copyright (c) 2012, 2019, SAP SE. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 43,75 ****
  #ifdef  CRC32_BYFOUR
    #define CRC32_TABLES 8
  #else
    #define CRC32_TABLES 1
  #endif
! #define CRC32_CONSTANTS_SIZE 1084
! #define CRC32_BARRET_CONSTANTS 10
  
  class ppc64 {
   friend class StubGenerator;
  
   private:
  
    // CRC32 Intrinsics.
    static juint _crc_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
    static juint _crc32c_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
!   static juint *_crc_constants, *_crc_barret_constants;
!   static juint *_crc32c_constants, *_crc32c_barret_constants;
  
   public:
  
    // CRC32 Intrinsics.
    static void generate_load_crc_table_addr(MacroAssembler* masm, Register table);
    static void generate_load_crc_constants_addr(MacroAssembler* masm, Register table);
-   static void generate_load_crc_barret_constants_addr(MacroAssembler* masm, Register table);
    static void generate_load_crc32c_table_addr(MacroAssembler* masm, Register table);
    static void generate_load_crc32c_constants_addr(MacroAssembler* masm, Register table);
-   static void generate_load_crc32c_barret_constants_addr(MacroAssembler* masm, Register table);
    static juint* generate_crc_constants(juint reverse_poly);
-   static juint* generate_crc_barret_constants(juint reverse_poly);
  };
  
  #endif // CPU_PPC_STUBROUTINES_PPC_HPP
--- 43,78 ----
  #ifdef  CRC32_BYFOUR
    #define CRC32_TABLES 8
  #else
    #define CRC32_TABLES 1
  #endif
! 
! #define REVERSE_CRC32_POLY  0xEDB88320
! #define REVERSE_CRC32C_POLY 0x82F63B78
! #define INVERSE_REVERSE_CRC32_POLY  0x1aab14226ull
! #define INVERSE_REVERSE_CRC32C_POLY 0x105fd79bdull
! #define CRC32_UNROLL_FACTOR 2048
! #define CRC32_UNROLL_FACTOR2 8
! 
  
  class ppc64 {
   friend class StubGenerator;
  
   private:
  
    // CRC32 Intrinsics.
    static juint _crc_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
    static juint _crc32c_table[CRC32_TABLES][CRC32_COLUMN_SIZE];
!   static juint *_crc_constants;
!   static juint *_crc32c_constants;
  
   public:
  
    // CRC32 Intrinsics.
    static void generate_load_crc_table_addr(MacroAssembler* masm, Register table);
    static void generate_load_crc_constants_addr(MacroAssembler* masm, Register table);
    static void generate_load_crc32c_table_addr(MacroAssembler* masm, Register table);
    static void generate_load_crc32c_constants_addr(MacroAssembler* masm, Register table);
    static juint* generate_crc_constants(juint reverse_poly);
  };
  
  #endif // CPU_PPC_STUBROUTINES_PPC_HPP