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1 /* Common hooks for Synopsys DesignWare ARC
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2 Copyright (C) 1994-2020 Free Software Foundation, Inc.
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3 Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
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4 on behalf of Synopsys Inc.
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5 Claudiu Zissulescu <Claudiu.Zissulescu@synopsys.com>
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6
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7 This file is part of GCC.
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8
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9 GCC is free software; you can redistribute it and/or modify
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10 it under the terms of the GNU General Public License as published by
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11 the Free Software Foundation; either version 3, or (at your option)
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12 any later version.
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13
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14 GCC is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU General Public License for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with GCC; see the file COPYING3. If not see
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21 <http://www.gnu.org/licenses/>. */
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22
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23 #include "config.h"
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24 #include "system.h"
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25 #include "coretypes.h"
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26 #include "diagnostic-core.h"
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27 #include "tm.h"
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28 #include "common/common-target.h"
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29 #include "opts.h"
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30 #include "flags.h"
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31
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32 static void
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33 arc_option_init_struct (struct gcc_options *opts)
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34 {
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35 opts->x_flag_no_common = 255; /* Mark as not user-initialized. */
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36
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37 /* Which cpu we're compiling for (ARC600, ARC601, ARC700, ARCv2). */
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38 arc_cpu = PROCESSOR_NONE;
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39 }
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40
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41 /* Set default optimization options. */
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42 /* The conditions are incomplete, so we rely on the evaluation order here,
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43 which goes from first to last, i.e. the last match prevails. */
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44 /* ??? But this trick only works for reject_negative options. Approximate
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45 missing option combination. */
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46 #define OPT_LEVELS_3_PLUS_SPEED_ONLY OPT_LEVELS_3_PLUS
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47 static const struct default_options arc_option_optimization_table[] =
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48 {
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49 { OPT_LEVELS_ALL, OPT_mRcq, NULL, 1 },
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50 { OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 },
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51 { OPT_LEVELS_ALL, OPT_msize_level_, NULL, 1 },
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52 { OPT_LEVELS_ALL, OPT_mearly_cbranchsi, NULL, 1 },
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53 { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 },
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54 { OPT_LEVELS_SIZE, OPT_ftree_loop_optimize, NULL, 0},
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55 { OPT_LEVELS_SIZE, OPT_fmove_loop_invariants, NULL, 0},
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56 { OPT_LEVELS_SIZE, OPT_fbranch_count_reg, NULL, 0},
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57 { OPT_LEVELS_SIZE, OPT_fdelayed_branch, NULL, 0 },
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58 { OPT_LEVELS_SIZE, OPT_fsection_anchors, NULL, 1 },
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59 { OPT_LEVELS_SIZE, OPT_mq_class, NULL, 1 },
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60 { OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
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61 { OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 },
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62 { OPT_LEVELS_SIZE, OPT_mmillicode, NULL, 1 },
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63 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
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64 { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_msize_level_, NULL, 0 },
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65 { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_malign_call, NULL, 1 },
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66 { OPT_LEVELS_NONE, 0, NULL, 0 }
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67 };
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68
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69 /* Process options. */
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70 static bool
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71 arc_handle_option (struct gcc_options *opts,
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72 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
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73 const struct cl_decoded_option *decoded,
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74 location_t loc)
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75 {
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76 size_t code = decoded->opt_index;
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77 int value = decoded->value;
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78 static int mcpu_seen = PROCESSOR_NONE;
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79
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80 switch (code)
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81 {
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82 case OPT_mcpu_:
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83 /* N.B., at this point arc_cpu has already been set to its new value by
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84 our caller, so comparing arc_cpu with PROCESSOR_NONE is pointless. */
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85
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86 if (mcpu_seen != PROCESSOR_NONE && mcpu_seen != value)
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87 warning_at (loc, 0, "multiple %<-mcpu=%> options specified.");
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88 mcpu_seen = value;
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89 break;
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90
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91 case OPT_mmpy_option_:
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92 if (opts->x_arc_mpy_option == 1)
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93 warning_at (loc, 0, "Unsupported value for mmpy-option");
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94 break;
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95
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96 default:
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97 break;
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98 }
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99
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100 return true;
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101 }
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102
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103 #undef TARGET_OPTION_INIT_STRUCT
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104 #define TARGET_OPTION_INIT_STRUCT arc_option_init_struct
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105
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106 #undef TARGET_OPTION_OPTIMIZATION_TABLE
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107 #define TARGET_OPTION_OPTIMIZATION_TABLE arc_option_optimization_table
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108
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109 #define DEFAULT_NO_SDATA (TARGET_SDATA_DEFAULT ? 0 : MASK_NO_SDATA_SET)
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110
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111 #undef TARGET_DEFAULT_TARGET_FLAGS
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112 #define TARGET_DEFAULT_TARGET_FLAGS (DEFAULT_NO_SDATA | MASK_VOLATILE_CACHE_SET)
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113
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114 #undef TARGET_HANDLE_OPTION
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115 #define TARGET_HANDLE_OPTION arc_handle_option
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116
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117 #include "common/common-target-def.h"
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118
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119 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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