1 /* Common hooks for DEC Alpha. 2 Copyright (C) 1992-2020 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 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License 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 #include "config.h" 21 #include "system.h" 22 #include "coretypes.h" 23 #include "diagnostic-core.h" 24 #include "tm.h" 25 #include "common/common-target.h" 26 #include "common/common-target-def.h" 27 #include "opts.h" 28 #include "flags.h" 29 30 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */ 31 static const struct default_options alpha_option_optimization_table[] = 32 { 33 /* Enable redundant extension instructions removal at -O2 and higher. */ 34 { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 }, 35 { OPT_LEVELS_NONE, 0, NULL, 0 } 36 }; 37 38 /* Implement TARGET_OPTION_INIT_STRUCT. */ 39 40 static void 41 alpha_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED) 42 { 43 #if TARGET_ABI_OPEN_VMS 44 /* Enable section anchors by default. */ 45 opts->x_flag_section_anchors = 1; 46 #endif 47 } 48 49 /* Implement TARGET_HANDLE_OPTION. */ 50 51 static bool 52 alpha_handle_option (struct gcc_options *opts, 53 struct gcc_options *opts_set ATTRIBUTE_UNUSED, 54 const struct cl_decoded_option *decoded, 55 location_t loc) 56 { 57 size_t code = decoded->opt_index; 58 const char *arg = decoded->arg; 59 int value = decoded->value; 60 61 switch (code) 62 { 63 case OPT_mfp_regs: 64 if (value == 0) 65 opts->x_target_flags |= MASK_SOFT_FP; 66 break; 67 68 case OPT_mieee: 69 case OPT_mieee_with_inexact: 70 opts->x_target_flags |= MASK_IEEE_CONFORMANT; 71 break; 72 73 case OPT_mtls_size_: 74 if (value != 16 && value != 32 && value != 64) 75 error_at (loc, "bad value %qs for %<-mtls-size%> switch", arg); 76 break; 77 } 78 79 return true; 80 } 81 82 #undef TARGET_DEFAULT_TARGET_FLAGS 83 #define TARGET_DEFAULT_TARGET_FLAGS \ 84 (TARGET_DEFAULT | TARGET_CPU_DEFAULT | TARGET_DEFAULT_EXPLICIT_RELOCS) 85 #undef TARGET_HANDLE_OPTION 86 #define TARGET_HANDLE_OPTION alpha_handle_option 87 88 #undef TARGET_OPTION_INIT_STRUCT 89 #define TARGET_OPTION_INIT_STRUCT alpha_option_init_struct 90 91 #undef TARGET_OPTION_OPTIMIZATION_TABLE 92 #define TARGET_OPTION_OPTIMIZATION_TABLE alpha_option_optimization_table 93 94 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; 95