gcc/common/config/arc/arc-common.c

   1 /* Common hooks for Synopsys DesignWare ARC
   2    Copyright (C) 1994-2017 Free Software Foundation, Inc.
   3    Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
   4                 on behalf of Synopsys Inc.
   5                 Claudiu Zissulescu <Claudiu.Zissulescu@synopsys.com>
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 3, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "diagnostic-core.h"
  27 #include "tm.h"
  28 #include "common/common-target.h"
  29 #include "opts.h"
  30 #include "flags.h"
  31
  32 static void
  33 arc_option_init_struct (struct gcc_options *opts)
  34 {
  35   opts->x_flag_no_common = 255; /* Mark as not user-initialized.  */
  36
  37   /* Which cpu we're compiling for (ARC600, ARC601, ARC700, ARCv2).  */
  38   arc_cpu = PROCESSOR_NONE;
  39 }
  40
  41 /* Set default optimization options.  */
  42 /* The conditions are incomplete, so we rely on the evaluation order here,
  43    which goes from first to last, i.e. the last match prevails.  */
  44 /* ??? But this trick only works for reject_negative options.  Approximate
  45    missing option combination.  */
  46 #define OPT_LEVELS_3_PLUS_SPEED_ONLY OPT_LEVELS_3_PLUS
  47 static const struct default_options arc_option_optimization_table[] =
  48   {
  49     { OPT_LEVELS_SIZE, OPT_fsection_anchors, NULL, 1 },
  50     { OPT_LEVELS_ALL, OPT_mRcq, NULL, 1 },
  51     { OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 },
  52     { OPT_LEVELS_ALL, OPT_msize_level_, NULL, 1 },
  53     { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_msize_level_, NULL, 0 },
  54     { OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 },
  55     { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_malign_call, NULL, 1 },
  56     { OPT_LEVELS_ALL, OPT_mearly_cbranchsi, NULL, 1 },
  57     { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 },
  58     { OPT_LEVELS_SIZE, OPT_mq_class, NULL, 1 },
  59     { OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
  60     { OPT_LEVELS_NONE, 0, NULL, 0 }
  61   };
  62
  63 /*  Process options.  */
  64 static bool
  65 arc_handle_option (struct gcc_options *opts,
  66                    struct gcc_options *opts_set ATTRIBUTE_UNUSED,
  67                    const struct cl_decoded_option *decoded,
  68                    location_t loc)
  69 {
  70   size_t code = decoded->opt_index;
  71   int value = decoded->value;
  72   static int mcpu_seen = PROCESSOR_NONE;
  73
  74   switch (code)
  75     {
  76     case OPT_mcpu_:
  77       /* N.B., at this point arc_cpu has already been set to its new value by
  78          our caller, so comparing arc_cpu with PROCESSOR_NONE is pointless.  */
  79
  80       if (mcpu_seen != PROCESSOR_NONE && mcpu_seen != value)
  81         warning_at (loc, 0, "multiple -mcpu= options specified.");
  82       mcpu_seen = value;
  83       break;
  84
  85     case OPT_mmpy_option_:
  86       if (opts->x_arc_mpy_option == 1)
  87         warning_at (loc, 0, "Unsupported value for mmpy-option");
  88       break;
  89
  90     default:
  91       break;
  92     }
  93
  94   return true;
  95 }
  96
  97 #undef  TARGET_OPTION_INIT_STRUCT
  98 #define TARGET_OPTION_INIT_STRUCT arc_option_init_struct
  99
 100 #undef  TARGET_OPTION_OPTIMIZATION_TABLE
 101 #define TARGET_OPTION_OPTIMIZATION_TABLE arc_option_optimization_table
 102
 103 #define DEFAULT_NO_SDATA (TARGET_SDATA_DEFAULT ? 0 : MASK_NO_SDATA_SET)
 104
 105 #undef  TARGET_DEFAULT_TARGET_FLAGS
 106 #define TARGET_DEFAULT_TARGET_FLAGS (DEFAULT_NO_SDATA | MASK_VOLATILE_CACHE_SET)
 107
 108 #undef  TARGET_HANDLE_OPTION
 109 #define TARGET_HANDLE_OPTION arc_handle_option
 110
 111 #include "common/common-target-def.h"
 112
 113 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;