1 /* Definitions of target machine for GCC for IA-32. 2 Copyright (C) 1988-2020 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 /* In i386-common.c. */ 21 extern bool ix86_handle_option (struct gcc_options *opts, 22 struct gcc_options *opts_set ATTRIBUTE_UNUSED, 23 const struct cl_decoded_option *decoded, 24 location_t loc); 25 26 /* Functions in i386.c */ 27 extern bool ix86_target_stack_probe (void); 28 extern bool ix86_can_use_return_insn_p (void); 29 extern void ix86_setup_frame_addresses (void); 30 extern bool ix86_rip_relative_addr_p (struct ix86_address *parts); 31 32 extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int); 33 extern void ix86_expand_prologue (void); 34 extern void ix86_maybe_emit_epilogue_vzeroupper (void); 35 extern void ix86_expand_epilogue (int); 36 extern void ix86_expand_split_stack_prologue (void); 37 38 extern void ix86_output_addr_vec_elt (FILE *, int); 39 extern void ix86_output_addr_diff_elt (FILE *, int, int); 40 41 extern const char *ix86_output_ssemov (rtx_insn *, rtx *); 42 43 extern enum calling_abi ix86_cfun_abi (void); 44 extern enum calling_abi ix86_function_type_abi (const_tree); 45 46 extern bool ix86_use_pseudo_pic_reg (void); 47 48 extern void ix86_reset_previous_fndecl (void); 49 50 extern bool ix86_using_red_zone (void); 51 52 extern unsigned int ix86_regmode_natural_size (machine_mode); 53 #ifdef RTX_CODE 54 extern int standard_80387_constant_p (rtx); 55 extern const char *standard_80387_constant_opcode (rtx); 56 extern rtx standard_80387_constant_rtx (int); 57 extern int standard_sse_constant_p (rtx, machine_mode); 58 extern const char *standard_sse_constant_opcode (rtx_insn *, rtx *); 59 extern bool ix86_standard_x87sse_constant_load_p (const rtx_insn *, rtx); 60 extern bool ix86_pre_reload_split (void); 61 extern bool symbolic_reference_mentioned_p (rtx); 62 extern bool extended_reg_mentioned_p (rtx); 63 extern bool x86_extended_QIreg_mentioned_p (rtx_insn *); 64 extern bool x86_extended_reg_mentioned_p (rtx); 65 extern bool x86_maybe_negate_const_int (rtx *, machine_mode); 66 extern machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx); 67 68 extern int avx_vpermilp_parallel (rtx par, machine_mode mode); 69 extern int avx_vperm2f128_parallel (rtx par, machine_mode mode); 70 71 extern bool ix86_expand_strlen (rtx, rtx, rtx, rtx); 72 extern bool ix86_expand_set_or_cpymem (rtx, rtx, rtx, rtx, rtx, rtx, 73 rtx, rtx, rtx, rtx, bool); 74 75 extern bool constant_address_p (rtx); 76 extern bool legitimate_pic_operand_p (rtx); 77 extern bool legitimate_pic_address_disp_p (rtx); 78 extern bool ix86_force_load_from_GOT_p (rtx); 79 extern void print_reg (rtx, int, FILE*); 80 extern void ix86_print_operand (FILE *, rtx, int); 81 82 extern void split_double_mode (machine_mode, rtx[], int, rtx[], rtx[]); 83 84 extern const char *output_set_got (rtx, rtx); 85 extern const char *output_387_binary_op (rtx_insn *, rtx*); 86 extern const char *output_387_reg_move (rtx_insn *, rtx*); 87 extern const char *output_fix_trunc (rtx_insn *, rtx*, bool); 88 extern const char *output_fp_compare (rtx_insn *, rtx*, bool, bool); 89 extern const char *output_adjust_stack_and_probe (rtx); 90 extern const char *output_probe_stack_range (rtx, rtx); 91 92 extern void ix86_expand_clear (rtx); 93 extern void ix86_expand_move (machine_mode, rtx[]); 94 extern void ix86_expand_vector_move (machine_mode, rtx[]); 95 extern void ix86_expand_vector_move_misalign (machine_mode, rtx[]); 96 extern rtx ix86_fixup_binary_operands (enum rtx_code, 97 machine_mode, rtx[]); 98 extern void ix86_fixup_binary_operands_no_copy (enum rtx_code, 99 machine_mode, rtx[]); 100 extern void ix86_expand_binary_operator (enum rtx_code, 101 machine_mode, rtx[]); 102 extern void ix86_expand_vector_logical_operator (enum rtx_code, 103 machine_mode, rtx[]); 104 extern bool ix86_binary_operator_ok (enum rtx_code, machine_mode, rtx[]); 105 extern bool ix86_avoid_lea_for_add (rtx_insn *, rtx[]); 106 extern bool ix86_use_lea_for_mov (rtx_insn *, rtx[]); 107 extern bool ix86_avoid_lea_for_addr (rtx_insn *, rtx[]); 108 extern void ix86_split_lea_for_addr (rtx_insn *, rtx[], machine_mode); 109 extern bool ix86_lea_for_add_ok (rtx_insn *, rtx[]); 110 extern bool ix86_vec_interleave_v2df_operator_ok (rtx operands[3], bool high); 111 extern bool ix86_dep_by_shift_count (const_rtx set_insn, const_rtx use_insn); 112 extern bool ix86_agi_dependent (rtx_insn *set_insn, rtx_insn *use_insn); 113 extern void ix86_expand_unary_operator (enum rtx_code, machine_mode, 114 rtx[]); 115 extern rtx ix86_build_const_vector (machine_mode, bool, rtx); 116 extern rtx ix86_build_signbit_mask (machine_mode, bool, bool); 117 extern void ix86_split_convert_uns_si_sse (rtx[]); 118 extern void ix86_expand_convert_uns_didf_sse (rtx, rtx); 119 extern void ix86_expand_convert_uns_sixf_sse (rtx, rtx); 120 extern void ix86_expand_convert_uns_sidf_sse (rtx, rtx); 121 extern void ix86_expand_convert_uns_sisf_sse (rtx, rtx); 122 extern void ix86_expand_convert_sign_didf_sse (rtx, rtx); 123 extern void ix86_expand_vector_convert_uns_vsivsf (rtx, rtx); 124 extern rtx ix86_expand_adjust_ufix_to_sfix_si (rtx, rtx *); 125 extern enum ix86_fpcmp_strategy ix86_fp_comparison_strategy (enum rtx_code); 126 extern void ix86_expand_fp_absneg_operator (enum rtx_code, machine_mode, 127 rtx[]); 128 extern void ix86_split_fp_absneg_operator (enum rtx_code, machine_mode, 129 rtx[]); 130 extern void ix86_expand_copysign (rtx []); 131 extern void ix86_split_copysign_const (rtx []); 132 extern void ix86_split_copysign_var (rtx []); 133 extern void ix86_expand_xorsign (rtx []); 134 extern void ix86_split_xorsign (rtx []); 135 extern bool ix86_unary_operator_ok (enum rtx_code, machine_mode, rtx[]); 136 extern bool ix86_match_ccmode (rtx, machine_mode); 137 extern void ix86_expand_branch (enum rtx_code, rtx, rtx, rtx); 138 extern void ix86_expand_setcc (rtx, enum rtx_code, rtx, rtx); 139 extern bool ix86_expand_int_movcc (rtx[]); 140 extern bool ix86_expand_fp_movcc (rtx[]); 141 extern bool ix86_expand_fp_vcond (rtx[]); 142 extern bool ix86_expand_int_vcond (rtx[]); 143 extern void ix86_expand_vec_perm (rtx[]); 144 extern bool ix86_expand_mask_vec_cmp (rtx, enum rtx_code, rtx, rtx); 145 extern bool ix86_expand_int_vec_cmp (rtx[]); 146 extern bool ix86_expand_fp_vec_cmp (rtx[]); 147 extern void ix86_expand_sse_movcc (rtx, rtx, rtx, rtx); 148 extern void ix86_expand_sse_unpack (rtx, rtx, bool, bool); 149 extern bool ix86_expand_int_addcc (rtx[]); 150 extern rtx_insn *ix86_expand_call (rtx, rtx, rtx, rtx, rtx, bool); 151 extern void ix86_split_call_vzeroupper (rtx, rtx); 152 extern void x86_initialize_trampoline (rtx, rtx, rtx); 153 extern rtx ix86_zero_extend_to_Pmode (rtx); 154 extern void ix86_split_long_move (rtx[]); 155 extern void ix86_split_ashl (rtx *, rtx, machine_mode); 156 extern void ix86_split_ashr (rtx *, rtx, machine_mode); 157 extern void ix86_split_lshr (rtx *, rtx, machine_mode); 158 extern rtx ix86_find_base_term (rtx); 159 extern bool ix86_check_movabs (rtx, int); 160 extern bool ix86_check_no_addr_space (rtx); 161 extern void ix86_split_idivmod (machine_mode, rtx[], bool); 162 163 extern rtx assign_386_stack_local (machine_mode, enum ix86_stack_slot); 164 extern int ix86_attr_length_immediate_default (rtx_insn *, bool); 165 extern int ix86_attr_length_address_default (rtx_insn *); 166 extern int ix86_attr_length_vex_default (rtx_insn *, bool, bool); 167 168 extern rtx ix86_libcall_value (machine_mode); 169 extern bool ix86_function_arg_regno_p (int); 170 extern void ix86_asm_output_function_label (FILE *, const char *, tree); 171 extern void ix86_call_abi_override (const_tree); 172 extern int ix86_reg_parm_stack_space (const_tree); 173 174 extern bool ix86_libc_has_function (enum function_class fn_class); 175 176 extern void x86_order_regs_for_local_alloc (void); 177 extern void x86_function_profiler (FILE *, int); 178 extern void x86_emit_floatuns (rtx [2]); 179 extern void ix86_emit_fp_unordered_jump (rtx); 180 181 extern void ix86_emit_i387_sinh (rtx, rtx); 182 extern void ix86_emit_i387_cosh (rtx, rtx); 183 extern void ix86_emit_i387_tanh (rtx, rtx); 184 extern void ix86_emit_i387_asinh (rtx, rtx); 185 extern void ix86_emit_i387_acosh (rtx, rtx); 186 extern void ix86_emit_i387_atanh (rtx, rtx); 187 extern void ix86_emit_i387_log1p (rtx, rtx); 188 extern void ix86_emit_i387_round (rtx, rtx); 189 extern void ix86_emit_swdivsf (rtx, rtx, rtx, machine_mode); 190 extern void ix86_emit_swsqrtsf (rtx, rtx, machine_mode, bool); 191 192 extern enum rtx_code ix86_reverse_condition (enum rtx_code, machine_mode); 193 194 extern void ix86_expand_lround (rtx, rtx); 195 extern void ix86_expand_lfloorceil (rtx, rtx, bool); 196 extern void ix86_expand_rint (rtx, rtx); 197 extern void ix86_expand_floorceil (rtx, rtx, bool); 198 extern void ix86_expand_floorceildf_32 (rtx, rtx, bool); 199 extern void ix86_expand_trunc (rtx, rtx); 200 extern void ix86_expand_truncdf_32 (rtx, rtx); 201 extern void ix86_expand_round (rtx, rtx); 202 extern void ix86_expand_rounddf_32 (rtx, rtx); 203 extern void ix86_expand_round_sse4 (rtx, rtx); 204 205 extern void ix86_expand_vecop_qihi (enum rtx_code, rtx, rtx, rtx); 206 207 extern rtx ix86_split_stack_guard (void); 208 209 extern void ix86_move_vector_high_sse_to_mmx (rtx); 210 extern void ix86_split_mmx_pack (rtx[], enum rtx_code); 211 extern void ix86_split_mmx_punpck (rtx[], bool); 212 213 #ifdef TREE_CODE 214 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, int); 215 #endif /* TREE_CODE */ 216 217 #endif /* RTX_CODE */ 218 219 #ifdef TREE_CODE 220 extern int ix86_data_alignment (tree, unsigned int, bool); 221 extern unsigned int ix86_local_alignment (tree, machine_mode, 222 unsigned int); 223 extern unsigned int ix86_minimum_alignment (tree, machine_mode, 224 unsigned int); 225 extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *); 226 extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *); 227 extern int x86_field_alignment (tree, int); 228 extern tree ix86_valid_target_attribute_tree (tree, tree, 229 struct gcc_options *, 230 struct gcc_options *, bool); 231 extern unsigned int ix86_get_callcvt (const_tree); 232 233 #endif 234 235 extern rtx ix86_tls_module_base (void); 236 extern bool ix86_tls_address_pattern_p (rtx); 237 extern rtx ix86_rewrite_tls_address (rtx); 238 239 extern void ix86_expand_vector_init (bool, rtx, rtx); 240 extern void ix86_expand_vector_set (bool, rtx, rtx, int); 241 extern void ix86_expand_vector_extract (bool, rtx, rtx, int); 242 extern void ix86_expand_reduc (rtx (*)(rtx, rtx, rtx), rtx, rtx); 243 244 extern void ix86_expand_vec_extract_even_odd (rtx, rtx, rtx, unsigned); 245 extern bool ix86_expand_pextr (rtx *); 246 extern bool ix86_expand_pinsr (rtx *); 247 extern void ix86_expand_mul_widen_evenodd (rtx, rtx, rtx, bool, bool); 248 extern void ix86_expand_mul_widen_hilo (rtx, rtx, rtx, bool, bool); 249 extern void ix86_expand_sse2_mulv4si3 (rtx, rtx, rtx); 250 extern void ix86_expand_sse2_mulvxdi3 (rtx, rtx, rtx); 251 extern void ix86_expand_sse2_abs (rtx, rtx); 252 253 /* In i386-c.c */ 254 extern void ix86_target_macros (void); 255 extern void ix86_register_pragmas (void); 256 257 /* In i386-d.c */ 258 extern void ix86_d_target_versions (void); 259 260 /* In winnt.c */ 261 extern void i386_pe_unique_section (tree, int); 262 extern void i386_pe_declare_function_type (FILE *, const char *, int); 263 extern void i386_pe_record_external_function (tree, const char *); 264 extern void i386_pe_maybe_record_exported_symbol (tree, const char *, int); 265 extern void i386_pe_encode_section_info (tree, rtx, int); 266 extern bool i386_pe_binds_local_p (const_tree); 267 extern const char *i386_pe_strip_name_encoding_full (const char *); 268 extern bool i386_pe_valid_dllimport_attribute_p (const_tree); 269 extern unsigned int i386_pe_section_type_flags (tree, const char *, int); 270 extern void i386_pe_asm_named_section (const char *, unsigned int, tree); 271 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree, 272 const char *, 273 HOST_WIDE_INT, 274 HOST_WIDE_INT); 275 extern void i386_pe_file_end (void); 276 extern void i386_pe_asm_lto_start (void); 277 extern void i386_pe_asm_lto_end (void); 278 extern void i386_pe_start_function (FILE *, const char *, tree); 279 extern void i386_pe_end_function (FILE *, const char *, tree); 280 extern void i386_pe_end_cold_function (FILE *, const char *, tree); 281 extern void i386_pe_assemble_visibility (tree, int); 282 extern tree i386_pe_mangle_decl_assembler_name (tree, tree); 283 extern tree i386_pe_mangle_assembler_name (const char *); 284 extern void i386_pe_record_stub (const char *); 285 286 extern void i386_pe_seh_init (FILE *); 287 extern void i386_pe_seh_end_prologue (FILE *); 288 extern void i386_pe_seh_cold_init (FILE *, const char *); 289 extern void i386_pe_seh_unwind_emit (FILE *, rtx_insn *); 290 extern void i386_pe_seh_emit_except_personality (rtx); 291 extern void i386_pe_seh_init_sections (void); 292 293 /* In winnt-cxx.c and winnt-stubs.c */ 294 extern void i386_pe_adjust_class_at_definition (tree); 295 extern bool i386_pe_type_dllimport_p (tree); 296 extern bool i386_pe_type_dllexport_p (tree); 297 298 extern int i386_pe_reloc_rw_mask (void); 299 300 extern char internal_label_prefix[16]; 301 extern int internal_label_prefix_len; 302 303 extern bool ix86_epilogue_uses (int); 304 305 struct ix86_address 306 { 307 rtx base, index, disp; 308 HOST_WIDE_INT scale; 309 addr_space_t seg; 310 }; 311 312 extern int ix86_decompose_address (rtx, struct ix86_address *); 313 extern int memory_address_length (rtx, bool); 314 extern void x86_output_aligned_bss (FILE *, tree, const char *, 315 unsigned HOST_WIDE_INT, int); 316 extern void x86_elf_aligned_decl_common (FILE *, tree, const char *, 317 unsigned HOST_WIDE_INT, int); 318 319 #ifdef RTX_CODE 320 extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *, 321 enum rtx_code *, enum rtx_code *); 322 extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code); 323 #endif 324 extern int asm_preferred_eh_data_format (int, int); 325 326 #ifdef HAVE_ATTR_cpu 327 extern enum attr_cpu ix86_schedule; 328 #endif 329 330 extern const char * ix86_output_call_insn (rtx_insn *insn, rtx call_op); 331 extern const char * ix86_output_indirect_jmp (rtx call_op); 332 extern const char * ix86_output_function_return (bool long_p); 333 extern const char * ix86_output_indirect_function_return (rtx ret_op); 334 extern void ix86_split_simple_return_pop_internal (rtx); 335 extern bool ix86_operands_ok_for_move_multiple (rtx *operands, bool load, 336 machine_mode mode); 337 extern int ix86_min_insn_size (rtx_insn *); 338 339 extern int ix86_issue_rate (void); 340 extern int ix86_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn, 341 int cost, unsigned int); 342 extern int ia32_multipass_dfa_lookahead (void); 343 extern bool ix86_macro_fusion_p (void); 344 extern bool ix86_macro_fusion_pair_p (rtx_insn *condgen, rtx_insn *condjmp); 345 346 extern bool ix86_bd_has_dispatch (rtx_insn *insn, int action); 347 extern void ix86_bd_do_dispatch (rtx_insn *insn, int mode); 348 349 extern void ix86_core2i7_init_hooks (void); 350 351 extern int ix86_atom_sched_reorder (FILE *, int, rtx_insn **, int *, int); 352 353 extern poly_int64 ix86_push_rounding (poly_int64); 354 355 #ifdef RTX_CODE 356 /* Target data for multipass lookahead scheduling. 357 Currently used for Core 2/i7 tuning. */ 358 struct ix86_first_cycle_multipass_data_ 359 { 360 /* The length (in bytes) of ifetch block in this solution. */ 361 int ifetch_block_len; 362 /* Number of instructions in ifetch block in this solution. */ 363 int ifetch_block_n_insns; 364 /* Bitmap to remember changes to ready_try for backtracking. */ 365 sbitmap ready_try_change; 366 /* Size of the bitmap. */ 367 int ready_try_change_size; 368 }; 369 # define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DATA_T \ 370 struct ix86_first_cycle_multipass_data_ 371 #endif /* RTX_CODE */ 372 373 const addr_space_t ADDR_SPACE_SEG_FS = 1; 374 const addr_space_t ADDR_SPACE_SEG_GS = 2; 375 376 namespace gcc { class context; } 377 class rtl_opt_pass; 378 379 extern rtl_opt_pass *make_pass_insert_vzeroupper (gcc::context *); 380 extern rtl_opt_pass *make_pass_stv (gcc::context *); 381 extern rtl_opt_pass *make_pass_insert_endbranch (gcc::context *); 382 extern rtl_opt_pass *make_pass_remove_partial_avx_dependency 383 (gcc::context *); 384