1 /* Common hooks for Synopsys DesignWare ARC 2 Copyright (C) 1994-2020 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_ALL, OPT_mRcq, NULL, 1 }, 50 { OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 }, 51 { OPT_LEVELS_ALL, OPT_msize_level_, NULL, 1 }, 52 { OPT_LEVELS_ALL, OPT_mearly_cbranchsi, NULL, 1 }, 53 { OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 }, 54 { OPT_LEVELS_SIZE, OPT_ftree_loop_optimize, NULL, 0}, 55 { OPT_LEVELS_SIZE, OPT_fmove_loop_invariants, NULL, 0}, 56 { OPT_LEVELS_SIZE, OPT_fbranch_count_reg, NULL, 0}, 57 { OPT_LEVELS_SIZE, OPT_fdelayed_branch, NULL, 0 }, 58 { OPT_LEVELS_SIZE, OPT_fsection_anchors, NULL, 1 }, 59 { OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 }, 60 { OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 }, 61 { OPT_LEVELS_SIZE, OPT_mmillicode, NULL, 1 }, 62 { OPT_LEVELS_SIZE, OPT_fif_conversion, NULL, 0 }, 63 { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, 64 { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_msize_level_, NULL, 0 }, 65 { OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_malign_call, NULL, 1 }, 66 { OPT_LEVELS_NONE, 0, NULL, 0 } 67 }; 68 69 /* Process options. */ 70 static bool 71 arc_handle_option (struct gcc_options *opts, 72 struct gcc_options *opts_set ATTRIBUTE_UNUSED, 73 const struct cl_decoded_option *decoded, 74 location_t loc) 75 { 76 size_t code = decoded->opt_index; 77 int value = decoded->value; 78 static int mcpu_seen = PROCESSOR_NONE; 79 80 switch (code) 81 { 82 case OPT_mcpu_: 83 /* N.B., at this point arc_cpu has already been set to its new value by 84 our caller, so comparing arc_cpu with PROCESSOR_NONE is pointless. */ 85 86 if (mcpu_seen != PROCESSOR_NONE && mcpu_seen != value) 87 warning_at (loc, 0, "multiple %<-mcpu=%> options specified."); 88 mcpu_seen = value; 89 break; 90 91 case OPT_mmpy_option_: 92 if (opts->x_arc_mpy_option == 1) 93 warning_at (loc, 0, "Unsupported value for mmpy-option"); 94 break; 95 96 default: 97 break; 98 } 99 100 return true; 101 } 102 103 #undef TARGET_OPTION_INIT_STRUCT 104 #define TARGET_OPTION_INIT_STRUCT arc_option_init_struct 105 106 #undef TARGET_OPTION_OPTIMIZATION_TABLE 107 #define TARGET_OPTION_OPTIMIZATION_TABLE arc_option_optimization_table 108 109 #define DEFAULT_NO_SDATA (TARGET_SDATA_DEFAULT ? 0 : MASK_NO_SDATA_SET) 110 111 #undef TARGET_DEFAULT_TARGET_FLAGS 112 #define TARGET_DEFAULT_TARGET_FLAGS (DEFAULT_NO_SDATA | MASK_VOLATILE_CACHE_SET) 113 114 #undef TARGET_HANDLE_OPTION 115 #define TARGET_HANDLE_OPTION arc_handle_option 116 117 #include "common/common-target-def.h" 118 119 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER; 120