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111
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1 /* Common hooks for DEC Alpha.
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2 Copyright (C) 1992-2017 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #include "config.h"
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21 #include "system.h"
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22 #include "coretypes.h"
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23 #include "diagnostic-core.h"
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24 #include "tm.h"
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25 #include "common/common-target.h"
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26 #include "common/common-target-def.h"
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27 #include "opts.h"
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28 #include "flags.h"
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29
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30 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
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31 static const struct default_options alpha_option_optimization_table[] =
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32 {
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33 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
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34 /* Enable redundant extension instructions removal at -O2 and higher. */
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35 { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 },
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36 { OPT_LEVELS_NONE, 0, NULL, 0 }
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37 };
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38
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39 /* Implement TARGET_OPTION_INIT_STRUCT. */
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40
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41 static void
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42 alpha_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED)
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43 {
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44 #if TARGET_ABI_OPEN_VMS
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45 /* Enable section anchors by default. */
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46 opts->x_flag_section_anchors = 1;
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47 #endif
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48 }
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49
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50 /* Implement TARGET_HANDLE_OPTION. */
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51
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52 static bool
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53 alpha_handle_option (struct gcc_options *opts,
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54 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
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55 const struct cl_decoded_option *decoded,
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56 location_t loc)
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57 {
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58 size_t code = decoded->opt_index;
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59 const char *arg = decoded->arg;
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60 int value = decoded->value;
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61
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62 switch (code)
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63 {
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64 case OPT_mfp_regs:
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65 if (value == 0)
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66 opts->x_target_flags |= MASK_SOFT_FP;
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67 break;
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68
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69 case OPT_mieee:
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70 case OPT_mieee_with_inexact:
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71 opts->x_target_flags |= MASK_IEEE_CONFORMANT;
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72 break;
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73
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74 case OPT_mtls_size_:
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75 if (value != 16 && value != 32 && value != 64)
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76 error_at (loc, "bad value %qs for -mtls-size switch", arg);
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77 break;
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78 }
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79
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80 return true;
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81 }
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82
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83 #undef TARGET_DEFAULT_TARGET_FLAGS
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84 #define TARGET_DEFAULT_TARGET_FLAGS \
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85 (TARGET_DEFAULT | TARGET_CPU_DEFAULT | TARGET_DEFAULT_EXPLICIT_RELOCS)
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86 #undef TARGET_HANDLE_OPTION
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87 #define TARGET_HANDLE_OPTION alpha_handle_option
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88
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89 #undef TARGET_OPTION_INIT_STRUCT
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90 #define TARGET_OPTION_INIT_STRUCT alpha_option_init_struct
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91
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92 #undef TARGET_OPTION_OPTIMIZATION_TABLE
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93 #define TARGET_OPTION_OPTIMIZATION_TABLE alpha_option_optimization_table
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94
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95 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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