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      1 /* Description of target passes for rs6000
      2    Copyright (C) 2016-2022 Free Software Foundation, Inc.
      3 
      4 This file is part of GCC.
      5 
      6 GCC is free software; you can redistribute it and/or modify it under
      7 the terms of the GNU General Public License as published by the Free
      8 Software Foundation; either version 3, or (at your option) any later
      9 version.
     10 
     11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
     12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
     13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     14 for more details.
     15 
     16 You should have received a copy of the GNU General Public License
     17 along with GCC; see the file COPYING3.  If not see
     18 <http://www.gnu.org/licenses/>.  */
     19 
     20 /*
     21    Macros that can be used in this file:
     22    INSERT_PASS_AFTER (PASS, INSTANCE, TGT_PASS)
     23    INSERT_PASS_BEFORE (PASS, INSTANCE, TGT_PASS)
     24    REPLACE_PASS (PASS, INSTANCE, TGT_PASS)
     25  */
     26 
     27   /* Pass to add the appropriate vector swaps on power8 little endian systems.
     28      The power8 does not have instructions that automaticaly do the byte swaps
     29      for loads and stores.  */
     30   INSERT_PASS_BEFORE (pass_cse, 1, pass_analyze_swaps);
     31 
     32   /* Pass to do the PCREL_OPT optimization that combines the load of an
     33      external symbol's address along with a single load or store using that
     34      address as a base register.  */
     35   INSERT_PASS_BEFORE (pass_sched2, 1, pass_pcrel_opt);
     36