1 /* Definitions of target machine for GCC for IA-32. 2 Copyright (C) 1988-2019 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 enum calling_abi ix86_cfun_abi (void); 42 extern enum calling_abi ix86_function_type_abi (const_tree); 43 44 extern bool ix86_use_pseudo_pic_reg (void); 45 46 extern void ix86_reset_previous_fndecl (void); 47 48 extern bool ix86_using_red_zone (void); 49 50 #ifdef RTX_CODE 51 extern int standard_80387_constant_p (rtx); 52 extern const char *standard_80387_constant_opcode (rtx); 53 extern rtx standard_80387_constant_rtx (int); 54 extern int standard_sse_constant_p (rtx, machine_mode); 55 extern const char *standard_sse_constant_opcode (rtx_insn *, rtx *); 56 extern bool ix86_standard_x87sse_constant_load_p (const rtx_insn *, rtx); 57 extern bool symbolic_reference_mentioned_p (rtx); 58 extern bool extended_reg_mentioned_p (rtx); 59 extern bool x86_extended_QIreg_mentioned_p (rtx_insn *); 60 extern bool x86_extended_reg_mentioned_p (rtx); 61 extern bool x86_maybe_negate_const_int (rtx *, machine_mode); 62 extern machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx); 63 64 extern int avx_vpermilp_parallel (rtx par, machine_mode mode); 65 extern int avx_vperm2f128_parallel (rtx par, machine_mode mode); 66 67 extern bool ix86_expand_strlen (rtx, rtx, rtx, rtx); 68 extern bool ix86_expand_set_or_movmem (rtx, rtx, rtx, rtx, rtx, rtx, 69 rtx, rtx, rtx, rtx, bool); 70 71 extern bool constant_address_p (rtx); 72 extern bool legitimate_pic_operand_p (rtx); 73 extern bool legitimate_pic_address_disp_p (rtx); 74 extern bool ix86_force_load_from_GOT_p (rtx); 75 extern void print_reg (rtx, int, FILE*); 76 extern void ix86_print_operand (FILE *, rtx, int); 77 78 extern void split_double_mode (machine_mode, rtx[], int, rtx[], rtx[]); 79 80 extern const char *output_set_got (rtx, rtx); 81 extern const char *output_387_binary_op (rtx_insn *, rtx*); 82 extern const char *output_387_reg_move (rtx_insn *, rtx*); 83 extern const char *output_fix_trunc (rtx_insn *, rtx*, bool); 84 extern const char *output_fp_compare (rtx_insn *, rtx*, bool, bool); 85 extern const char *output_adjust_stack_and_probe (rtx); 86 extern const char *output_probe_stack_range (rtx, rtx); 87 88 extern void ix86_expand_clear (rtx); 89 extern void ix86_expand_move (machine_mode, rtx[]); 90 extern void ix86_expand_vector_move (machine_mode, rtx[]); 91 extern void ix86_expand_vector_move_misalign (machine_mode, rtx[]); 92 extern rtx ix86_fixup_binary_operands (enum rtx_code, 93 machine_mode, rtx[]); 94 extern void ix86_fixup_binary_operands_no_copy (enum rtx_code, 95 machine_mode, rtx[]); 96 extern void ix86_expand_binary_operator (enum rtx_code, 97 machine_mode, rtx[]); 98 extern void ix86_expand_vector_logical_operator (enum rtx_code, 99 machine_mode, rtx[]); 100 extern bool ix86_binary_operator_ok (enum rtx_code, machine_mode, rtx[]); 101 extern bool ix86_avoid_lea_for_add (rtx_insn *, rtx[]); 102 extern bool ix86_use_lea_for_mov (rtx_insn *, rtx[]); 103 extern bool ix86_avoid_lea_for_addr (rtx_insn *, rtx[]); 104 extern void ix86_split_lea_for_addr (rtx_insn *, rtx[], machine_mode); 105 extern bool ix86_lea_for_add_ok (rtx_insn *, rtx[]); 106 extern bool ix86_vec_interleave_v2df_operator_ok (rtx operands[3], bool high); 107 extern bool ix86_dep_by_shift_count (const_rtx set_insn, const_rtx use_insn); 108 extern bool ix86_agi_dependent (rtx_insn *set_insn, rtx_insn *use_insn); 109 extern void ix86_expand_unary_operator (enum rtx_code, machine_mode, 110 rtx[]); 111 extern rtx ix86_build_const_vector (machine_mode, bool, rtx); 112 extern rtx ix86_build_signbit_mask (machine_mode, bool, bool); 113 extern void ix86_split_convert_uns_si_sse (rtx[]); 114 extern void ix86_expand_convert_uns_didf_sse (rtx, rtx); 115 extern void ix86_expand_convert_uns_sixf_sse (rtx, rtx); 116 extern void ix86_expand_convert_uns_sidf_sse (rtx, rtx); 117 extern void ix86_expand_convert_uns_sisf_sse (rtx, rtx); 118 extern void ix86_expand_convert_sign_didf_sse (rtx, rtx); 119 extern void ix86_expand_vector_convert_uns_vsivsf (rtx, rtx); 120 extern rtx ix86_expand_adjust_ufix_to_sfix_si (rtx, rtx *); 121 extern enum ix86_fpcmp_strategy ix86_fp_comparison_strategy (enum rtx_code); 122 extern void ix86_expand_fp_absneg_operator (enum rtx_code, machine_mode, 123 rtx[]); 124 extern void ix86_expand_copysign (rtx []); 125 extern void ix86_split_copysign_const (rtx []); 126 extern void ix86_split_copysign_var (rtx []); 127 extern void ix86_expand_xorsign (rtx []); 128 extern void ix86_split_xorsign (rtx []); 129 extern bool ix86_unary_operator_ok (enum rtx_code, machine_mode, rtx[]); 130 extern bool ix86_match_ccmode (rtx, machine_mode); 131 extern void ix86_expand_branch (enum rtx_code, rtx, rtx, rtx); 132 extern void ix86_expand_setcc (rtx, enum rtx_code, rtx, rtx); 133 extern bool ix86_expand_int_movcc (rtx[]); 134 extern bool ix86_expand_fp_movcc (rtx[]); 135 extern bool ix86_expand_fp_vcond (rtx[]); 136 extern bool ix86_expand_int_vcond (rtx[]); 137 extern void ix86_expand_vec_perm (rtx[]); 138 extern bool ix86_expand_mask_vec_cmp (rtx[]); 139 extern bool ix86_expand_int_vec_cmp (rtx[]); 140 extern bool ix86_expand_fp_vec_cmp (rtx[]); 141 extern void ix86_expand_sse_movcc (rtx, rtx, rtx, rtx); 142 extern void ix86_expand_sse_unpack (rtx, rtx, bool, bool); 143 extern bool ix86_expand_int_addcc (rtx[]); 144 extern rtx_insn *ix86_expand_call (rtx, rtx, rtx, rtx, rtx, bool); 145 extern void ix86_split_call_vzeroupper (rtx, rtx); 146 extern void x86_initialize_trampoline (rtx, rtx, rtx); 147 extern rtx ix86_zero_extend_to_Pmode (rtx); 148 extern void ix86_split_long_move (rtx[]); 149 extern void ix86_split_ashl (rtx *, rtx, machine_mode); 150 extern void ix86_split_ashr (rtx *, rtx, machine_mode); 151 extern void ix86_split_lshr (rtx *, rtx, machine_mode); 152 extern rtx ix86_find_base_term (rtx); 153 extern bool ix86_check_movabs (rtx, int); 154 extern bool ix86_check_no_addr_space (rtx); 155 extern void ix86_split_idivmod (machine_mode, rtx[], bool); 156 157 extern rtx assign_386_stack_local (machine_mode, enum ix86_stack_slot); 158 extern int ix86_attr_length_immediate_default (rtx_insn *, bool); 159 extern int ix86_attr_length_address_default (rtx_insn *); 160 extern int ix86_attr_length_vex_default (rtx_insn *, bool, bool); 161 162 extern rtx ix86_libcall_value (machine_mode); 163 extern bool ix86_function_arg_regno_p (int); 164 extern void ix86_asm_output_function_label (FILE *, const char *, tree); 165 extern void ix86_call_abi_override (const_tree); 166 extern int ix86_reg_parm_stack_space (const_tree); 167 168 extern bool ix86_libc_has_function (enum function_class fn_class); 169 170 extern void x86_order_regs_for_local_alloc (void); 171 extern void x86_function_profiler (FILE *, int); 172 extern void x86_emit_floatuns (rtx [2]); 173 extern void ix86_emit_fp_unordered_jump (rtx); 174 175 extern void ix86_emit_i387_sinh (rtx, rtx); 176 extern void ix86_emit_i387_cosh (rtx, rtx); 177 extern void ix86_emit_i387_tanh (rtx, rtx); 178 extern void ix86_emit_i387_asinh (rtx, rtx); 179 extern void ix86_emit_i387_acosh (rtx, rtx); 180 extern void ix86_emit_i387_atanh (rtx, rtx); 181 extern void ix86_emit_i387_log1p (rtx, rtx); 182 extern void ix86_emit_i387_round (rtx, rtx); 183 extern void ix86_emit_swdivsf (rtx, rtx, rtx, machine_mode); 184 extern void ix86_emit_swsqrtsf (rtx, rtx, machine_mode, bool); 185 186 extern enum rtx_code ix86_reverse_condition (enum rtx_code, machine_mode); 187 188 extern void ix86_expand_lround (rtx, rtx); 189 extern void ix86_expand_lfloorceil (rtx, rtx, bool); 190 extern void ix86_expand_rint (rtx, rtx); 191 extern void ix86_expand_floorceil (rtx, rtx, bool); 192 extern void ix86_expand_floorceildf_32 (rtx, rtx, bool); 193 extern void ix86_expand_round_sse4 (rtx, rtx); 194 extern void ix86_expand_round (rtx, rtx); 195 extern void ix86_expand_rounddf_32 (rtx, rtx); 196 extern void ix86_expand_trunc (rtx, rtx); 197 extern void ix86_expand_truncdf_32 (rtx, rtx); 198 199 extern void ix86_expand_vecop_qihi (enum rtx_code, rtx, rtx, rtx); 200 201 extern rtx ix86_split_stack_guard (void); 202 203 #ifdef TREE_CODE 204 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, int); 205 #endif /* TREE_CODE */ 206 207 #endif /* RTX_CODE */ 208 209 #ifdef TREE_CODE 210 extern int ix86_data_alignment (tree, int, bool); 211 extern unsigned int ix86_local_alignment (tree, machine_mode, 212 unsigned int); 213 extern unsigned int ix86_minimum_alignment (tree, machine_mode, 214 unsigned int); 215 extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *); 216 extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *); 217 extern int x86_field_alignment (tree, int); 218 extern tree ix86_valid_target_attribute_tree (tree, 219 struct gcc_options *, 220 struct gcc_options *); 221 extern unsigned int ix86_get_callcvt (const_tree); 222 223 #endif 224 225 extern rtx ix86_tls_module_base (void); 226 extern bool ix86_tls_address_pattern_p (rtx); 227 extern rtx ix86_rewrite_tls_address (rtx); 228 229 extern void ix86_expand_vector_init (bool, rtx, rtx); 230 extern void ix86_expand_vector_set (bool, rtx, rtx, int); 231 extern void ix86_expand_vector_extract (bool, rtx, rtx, int); 232 extern void ix86_expand_reduc (rtx (*)(rtx, rtx, rtx), rtx, rtx); 233 234 extern void ix86_expand_vec_extract_even_odd (rtx, rtx, rtx, unsigned); 235 extern bool ix86_expand_pextr (rtx *); 236 extern bool ix86_expand_pinsr (rtx *); 237 extern void ix86_expand_mul_widen_evenodd (rtx, rtx, rtx, bool, bool); 238 extern void ix86_expand_mul_widen_hilo (rtx, rtx, rtx, bool, bool); 239 extern void ix86_expand_sse2_mulv4si3 (rtx, rtx, rtx); 240 extern void ix86_expand_sse2_mulvxdi3 (rtx, rtx, rtx); 241 extern void ix86_expand_sse2_abs (rtx, rtx); 242 243 /* In i386-c.c */ 244 extern void ix86_target_macros (void); 245 extern void ix86_register_pragmas (void); 246 247 /* In i386-d.c */ 248 extern void ix86_d_target_versions (void); 249 250 /* In winnt.c */ 251 extern void i386_pe_unique_section (tree, int); 252 extern void i386_pe_declare_function_type (FILE *, const char *, int); 253 extern void i386_pe_record_external_function (tree, const char *); 254 extern void i386_pe_maybe_record_exported_symbol (tree, const char *, int); 255 extern void i386_pe_encode_section_info (tree, rtx, int); 256 extern bool i386_pe_binds_local_p (const_tree); 257 extern const char *i386_pe_strip_name_encoding_full (const char *); 258 extern bool i386_pe_valid_dllimport_attribute_p (const_tree); 259 extern unsigned int i386_pe_section_type_flags (tree, const char *, int); 260 extern void i386_pe_asm_named_section (const char *, unsigned int, tree); 261 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree, 262 const char *, 263 HOST_WIDE_INT, 264 HOST_WIDE_INT); 265 extern void i386_pe_file_end (void); 266 extern void i386_pe_asm_lto_start (void); 267 extern void i386_pe_asm_lto_end (void); 268 extern void i386_pe_start_function (FILE *, const char *, tree); 269 extern void i386_pe_end_function (FILE *, const char *, tree); 270 extern void i386_pe_end_cold_function (FILE *, const char *, tree); 271 extern void i386_pe_assemble_visibility (tree, int); 272 extern tree i386_pe_mangle_decl_assembler_name (tree, tree); 273 extern tree i386_pe_mangle_assembler_name (const char *); 274 extern void i386_pe_record_stub (const char *); 275 276 extern void i386_pe_seh_init (FILE *); 277 extern void i386_pe_seh_end_prologue (FILE *); 278 extern void i386_pe_seh_cold_init (FILE *, const char *); 279 extern void i386_pe_seh_unwind_emit (FILE *, rtx_insn *); 280 extern void i386_pe_seh_emit_except_personality (rtx); 281 extern void i386_pe_seh_init_sections (void); 282 283 /* In winnt-cxx.c and winnt-stubs.c */ 284 extern void i386_pe_adjust_class_at_definition (tree); 285 extern bool i386_pe_type_dllimport_p (tree); 286 extern bool i386_pe_type_dllexport_p (tree); 287 288 extern int i386_pe_reloc_rw_mask (void); 289 290 extern char internal_label_prefix[16]; 291 extern int internal_label_prefix_len; 292 293 extern bool ix86_epilogue_uses (int); 294 295 struct ix86_address 296 { 297 rtx base, index, disp; 298 HOST_WIDE_INT scale; 299 addr_space_t seg; 300 }; 301 302 extern int ix86_decompose_address (rtx, struct ix86_address *); 303 extern int memory_address_length (rtx, bool); 304 extern void x86_output_aligned_bss (FILE *, tree, const char *, 305 unsigned HOST_WIDE_INT, int); 306 extern void x86_elf_aligned_decl_common (FILE *, tree, const char *, 307 unsigned HOST_WIDE_INT, int); 308 309 #ifdef RTX_CODE 310 extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *, 311 enum rtx_code *, enum rtx_code *); 312 extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code); 313 #endif 314 extern int asm_preferred_eh_data_format (int, int); 315 316 #ifdef HAVE_ATTR_cpu 317 extern enum attr_cpu ix86_schedule; 318 #endif 319 320 extern const char * ix86_output_call_insn (rtx_insn *insn, rtx call_op); 321 extern const char * ix86_output_indirect_jmp (rtx call_op); 322 extern const char * ix86_output_function_return (bool long_p); 323 extern const char * ix86_output_indirect_function_return (rtx ret_op); 324 extern void ix86_split_simple_return_pop_internal (rtx); 325 extern bool ix86_operands_ok_for_move_multiple (rtx *operands, bool load, 326 machine_mode mode); 327 extern int ix86_min_insn_size (rtx_insn *); 328 329 extern int ix86_issue_rate (void); 330 extern int ix86_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn, 331 int cost, unsigned int); 332 extern int ia32_multipass_dfa_lookahead (void); 333 extern bool ix86_macro_fusion_p (void); 334 extern bool ix86_macro_fusion_pair_p (rtx_insn *condgen, rtx_insn *condjmp); 335 336 extern bool ix86_bd_has_dispatch (rtx_insn *insn, int action); 337 extern void ix86_bd_do_dispatch (rtx_insn *insn, int mode); 338 339 extern void ix86_core2i7_init_hooks (void); 340 341 extern int ix86_atom_sched_reorder (FILE *, int, rtx_insn **, int *, int); 342 343 extern poly_int64 ix86_push_rounding (poly_int64); 344 345 #ifdef RTX_CODE 346 /* Target data for multipass lookahead scheduling. 347 Currently used for Core 2/i7 tuning. */ 348 struct ix86_first_cycle_multipass_data_ 349 { 350 /* The length (in bytes) of ifetch block in this solution. */ 351 int ifetch_block_len; 352 /* Number of instructions in ifetch block in this solution. */ 353 int ifetch_block_n_insns; 354 /* Bitmap to remember changes to ready_try for backtracking. */ 355 sbitmap ready_try_change; 356 /* Size of the bitmap. */ 357 int ready_try_change_size; 358 }; 359 # define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DATA_T \ 360 struct ix86_first_cycle_multipass_data_ 361 #endif /* RTX_CODE */ 362 363 const addr_space_t ADDR_SPACE_SEG_FS = 1; 364 const addr_space_t ADDR_SPACE_SEG_GS = 2; 365 366 namespace gcc { class context; } 367 class rtl_opt_pass; 368 369 extern rtl_opt_pass *make_pass_insert_vzeroupper (gcc::context *); 370 extern rtl_opt_pass *make_pass_stv (gcc::context *); 371 extern rtl_opt_pass *make_pass_insert_endbranch (gcc::context *); 372 extern rtl_opt_pass *make_pass_remove_partial_avx_dependency 373 (gcc::context *); 374