1 /* Common hooks for AArch64. 2 Copyright (C) 2012-2013 Free Software Foundation, Inc. 3 Contributed by ARM Ltd. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #include "config.h" 22 #include "system.h" 23 #include "coretypes.h" 24 #include "tm.h" 25 #include "tm_p.h" 26 #include "common/common-target.h" 27 #include "common/common-target-def.h" 28 #include "opts.h" 29 #include "flags.h" 30 31 #ifdef TARGET_BIG_ENDIAN_DEFAULT 32 #undef TARGET_DEFAULT_TARGET_FLAGS 33 #define TARGET_DEFAULT_TARGET_FLAGS (MASK_BIG_END) 34 #endif 35 36 #undef TARGET_HANDLE_OPTION 37 #define TARGET_HANDLE_OPTION aarch64_handle_option 38 39 #undef TARGET_OPTION_OPTIMIZATION_TABLE 40 #define TARGET_OPTION_OPTIMIZATION_TABLE aarch_option_optimization_table 41 42 /* Set default optimization options. */ 43 static const struct default_options aarch_option_optimization_table[] = 44 { 45 /* Enable section anchors by default at -O1 or higher. */ 46 { OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 }, 47 { OPT_LEVELS_NONE, 0, NULL, 0 } 48 }; 49 50 /* Implement TARGET_HANDLE_OPTION. 51 This function handles the target specific options for CPU/target selection. 52 53 march wins over mcpu, so when march is defined, mcpu takes the same value, 54 otherwise march remains undefined. mtune can be used with either march or 55 mcpu. If march and mcpu are used together, the rightmost option wins. 56 mtune can be used with either march or mcpu. */ 57 58 static bool 59 aarch64_handle_option (struct gcc_options *opts, 60 struct gcc_options *opts_set ATTRIBUTE_UNUSED, 61 const struct cl_decoded_option *decoded, 62 location_t loc ATTRIBUTE_UNUSED) 63 { 64 size_t code = decoded->opt_index; 65 const char *arg = decoded->arg; 66 67 switch (code) 68 { 69 case OPT_march_: 70 opts->x_aarch64_arch_string = arg; 71 opts->x_aarch64_cpu_string = arg; 72 return true; 73 74 case OPT_mcpu_: 75 opts->x_aarch64_cpu_string = arg; 76 opts->x_aarch64_arch_string = NULL; 77 return true; 78 79 case OPT_mtune_: 80 opts->x_aarch64_tune_string = arg; 81 return true; 82 83 default: 84 return true; 85 } 86 } 87 88 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; 89