1 /* Definitions of target machine for GCC for IA-32.
2 Copyright (C) 1988-2024 Free Software Foundation, Inc.
4 This file is part of GCC.
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)
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.
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/>. */
20 /* In i386-common.cc. */
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
,
26 /* Functions in i386.cc */
27 extern bool ix86_target_stack_probe (void);
28 extern bool ix86_can_use_return_insn_p (void);
29 extern bool ix86_function_ms_hook_prologue (const_tree fn
);
30 extern void ix86_setup_frame_addresses (void);
31 extern bool ix86_rip_relative_addr_p (struct ix86_address
*parts
);
33 extern HOST_WIDE_INT
ix86_initial_elimination_offset (int, int);
34 extern void ix86_expand_prologue (void);
35 extern void ix86_maybe_emit_epilogue_vzeroupper (void);
36 extern void ix86_expand_epilogue (int);
37 extern void ix86_expand_split_stack_prologue (void);
39 extern void ix86_output_addr_vec_elt (FILE *, int);
40 extern void ix86_output_addr_diff_elt (FILE *, int, int);
42 extern const char *ix86_output_ssemov (rtx_insn
*, rtx
*);
44 extern enum calling_abi
ix86_cfun_abi (void);
45 extern enum calling_abi
ix86_function_type_abi (const_tree
);
47 extern bool ix86_use_pseudo_pic_reg (void);
49 extern void ix86_reset_previous_fndecl (void);
51 extern bool ix86_using_red_zone (void);
53 extern unsigned int ix86_regmode_natural_size (machine_mode
);
54 extern bool ix86_check_builtin_isa_match (unsigned int fcode
);
56 extern int standard_80387_constant_p (rtx
);
57 extern const char *standard_80387_constant_opcode (rtx
);
58 extern rtx
standard_80387_constant_rtx (int);
59 extern int standard_sse_constant_p (rtx
, machine_mode
);
60 extern const char *standard_sse_constant_opcode (rtx_insn
*, rtx
*);
61 extern bool ix86_standard_x87sse_constant_load_p (const rtx_insn
*, rtx
);
62 extern bool ix86_pre_reload_split (void);
63 extern bool symbolic_reference_mentioned_p (rtx
);
64 extern bool extended_reg_mentioned_p (rtx
);
65 extern bool x86_extended_QIreg_mentioned_p (rtx_insn
*);
66 extern bool x86_extended_reg_mentioned_p (rtx
);
67 extern bool x86_extended_rex2reg_mentioned_p (rtx
);
68 extern bool x86_evex_reg_mentioned_p (rtx
[], int);
69 extern bool x86_poff_operand_p (rtx
);
70 extern bool x86_maybe_negate_const_int (rtx
*, machine_mode
);
71 extern machine_mode
ix86_cc_mode (enum rtx_code
, rtx
, rtx
);
73 extern int avx_vpermilp_parallel (rtx par
, machine_mode mode
);
74 extern int avx_vperm2f128_parallel (rtx par
, machine_mode mode
);
76 extern int vpternlog_redundant_operand_mask (rtx
);
77 extern void substitute_vpternlog_operands (rtx
[]);
79 extern bool ix86_expand_strlen (rtx
, rtx
, rtx
, rtx
);
80 extern bool ix86_expand_set_or_cpymem (rtx
, rtx
, rtx
, rtx
, rtx
, rtx
,
81 rtx
, rtx
, rtx
, rtx
, bool);
82 extern bool ix86_expand_cmpstrn_or_cmpmem (rtx
, rtx
, rtx
, rtx
, rtx
, bool);
84 extern enum reg_class
ix86_insn_base_reg_class (rtx_insn
*);
85 extern bool ix86_regno_ok_for_insn_base_p (int, rtx_insn
*);
86 extern enum reg_class
ix86_insn_index_reg_class (rtx_insn
*);
87 extern bool constant_address_p (rtx
);
88 extern bool legitimate_pic_operand_p (rtx
);
89 extern bool legitimate_pic_address_disp_p (rtx
);
90 extern bool ix86_force_load_from_GOT_p (rtx
, bool = false);
91 extern void print_reg (rtx
, int, FILE*);
92 extern void ix86_print_operand (FILE *, rtx
, int);
94 extern void split_double_mode (machine_mode
, rtx
[], int, rtx
[], rtx
[]);
95 extern void split_double_concat (machine_mode
, rtx
, rtx lo
, rtx
);
97 extern const char *output_set_got (rtx
, rtx
);
98 extern const char *output_387_binary_op (rtx_insn
*, rtx
*);
99 extern const char *output_387_reg_move (rtx_insn
*, rtx
*);
100 extern const char *output_fix_trunc (rtx_insn
*, rtx
*, bool);
101 extern const char *output_fp_compare (rtx_insn
*, rtx
*, bool, bool);
102 extern const char *output_adjust_stack_and_probe (rtx
);
103 extern const char *output_probe_stack_range (rtx
, rtx
);
105 extern void ix86_output_patchable_area (unsigned int, bool);
107 extern void ix86_expand_clear (rtx
);
108 extern void ix86_expand_move (machine_mode
, rtx
[]);
109 extern void ix86_expand_vector_move (machine_mode
, rtx
[]);
110 extern void ix86_expand_vector_move_misalign (machine_mode
, rtx
[]);
111 extern rtx
ix86_fixup_binary_operands (enum rtx_code
, machine_mode
,
112 rtx
[], bool = false);
113 extern void ix86_fixup_binary_operands_no_copy (enum rtx_code
, machine_mode
,
114 rtx
[], bool = false);
115 extern void ix86_expand_binary_operator (enum rtx_code
, machine_mode
,
116 rtx
[], bool = false);
117 extern bool ix86_binary_operator_ok (enum rtx_code
, machine_mode
,
118 rtx
[3], bool = false);
119 extern void ix86_expand_unary_operator (enum rtx_code
, machine_mode
,
120 rtx
[], bool = false);
121 extern bool ix86_unary_operator_ok (enum rtx_code
, machine_mode
,
122 rtx
[2], bool = false);
123 extern void ix86_expand_vector_logical_operator (enum rtx_code
,
124 machine_mode
, rtx
[]);
125 extern bool ix86_avoid_lea_for_add (rtx_insn
*, rtx
[]);
126 extern bool ix86_use_lea_for_mov (rtx_insn
*, rtx
[]);
127 extern bool ix86_avoid_lea_for_addr (rtx_insn
*, rtx
[]);
128 extern void ix86_split_lea_for_addr (rtx_insn
*, rtx
[], machine_mode
);
129 extern bool ix86_lea_for_add_ok (rtx_insn
*, rtx
[]);
130 extern int ix86_last_zero_store_uid
;
131 extern bool ix86_vec_interleave_v2df_operator_ok (rtx operands
[3], bool high
);
132 extern bool ix86_dep_by_shift_count (const_rtx set_insn
, const_rtx use_insn
);
133 extern bool ix86_agi_dependent (rtx_insn
*set_insn
, rtx_insn
*use_insn
);
134 extern rtx
ix86_build_const_vector (machine_mode
, bool, rtx
);
135 extern rtx
ix86_build_signbit_mask (machine_mode
, bool, bool);
136 extern HOST_WIDE_INT
ix86_convert_const_vector_to_integer (rtx
, machine_mode
);
137 extern void ix86_split_convert_uns_si_sse (rtx
[]);
138 extern void ix86_expand_convert_uns_didf_sse (rtx
, rtx
);
139 extern void ix86_expand_convert_uns_sixf_sse (rtx
, rtx
);
140 extern void ix86_expand_convert_uns_sidf_sse (rtx
, rtx
);
141 extern void ix86_expand_convert_uns_sisf_sse (rtx
, rtx
);
142 extern void ix86_expand_convert_sign_didf_sse (rtx
, rtx
);
143 extern void ix86_expand_vector_convert_uns_vsivsf (rtx
, rtx
);
144 extern rtx
ix86_expand_adjust_ufix_to_sfix_si (rtx
, rtx
*);
145 extern enum ix86_fpcmp_strategy
ix86_fp_comparison_strategy (enum rtx_code
);
146 extern void ix86_expand_fp_absneg_operator (enum rtx_code
, machine_mode
,
148 extern void ix86_split_fp_absneg_operator (enum rtx_code
, machine_mode
,
150 extern void ix86_expand_copysign (rtx
[]);
151 extern void ix86_expand_xorsign (rtx
[]);
152 extern bool ix86_match_ccmode (rtx
, machine_mode
);
153 extern bool ix86_match_ptest_ccmode (rtx
);
154 extern void ix86_expand_branch (enum rtx_code
, rtx
, rtx
, rtx
);
155 extern void ix86_expand_setcc (rtx
, enum rtx_code
, rtx
, rtx
);
156 extern bool ix86_expand_int_movcc (rtx
[]);
157 extern bool ix86_expand_fp_movcc (rtx
[]);
158 extern bool ix86_expand_fp_vcond (rtx
[]);
159 extern bool ix86_expand_int_vcond (rtx
[]);
160 extern void ix86_expand_vec_perm (rtx
[]);
161 extern bool ix86_expand_mask_vec_cmp (rtx
, enum rtx_code
, rtx
, rtx
);
162 extern bool ix86_expand_int_vec_cmp (rtx
[]);
163 extern bool ix86_expand_fp_vec_cmp (rtx
[]);
164 extern void ix86_expand_sse_movcc (rtx
, rtx
, rtx
, rtx
);
165 extern void ix86_expand_sse_extend (rtx
, rtx
, bool);
166 extern void ix86_expand_sse_unpack (rtx
, rtx
, bool, bool);
167 extern void ix86_expand_fp_spaceship (rtx
, rtx
, rtx
);
168 extern bool ix86_expand_int_addcc (rtx
[]);
169 extern void ix86_expand_carry (rtx arg
);
170 extern rtx_insn
*ix86_expand_call (rtx
, rtx
, rtx
, rtx
, rtx
, bool);
171 extern bool ix86_call_use_plt_p (rtx
);
172 extern void ix86_split_call_vzeroupper (rtx
, rtx
);
173 extern void x86_initialize_trampoline (rtx
, rtx
, rtx
);
174 extern rtx
ix86_zero_extend_to_Pmode (rtx
);
175 extern void ix86_split_long_move (rtx
[]);
176 extern void ix86_split_ashl (rtx
*, rtx
, machine_mode
);
177 extern void ix86_split_ashl_ndd (rtx
*, rtx
);
178 extern void ix86_split_ashr (rtx
*, rtx
, machine_mode
);
179 extern void ix86_split_lshr (rtx
*, rtx
, machine_mode
);
180 extern void ix86_split_rshift_ndd (enum rtx_code
, rtx
*, rtx
);
181 extern void ix86_expand_v1ti_shift (enum rtx_code
, rtx
[]);
182 extern void ix86_expand_v1ti_rotate (enum rtx_code
, rtx
[]);
183 extern void ix86_expand_v1ti_ashiftrt (rtx
[]);
184 extern rtx
ix86_replace_reg_with_reg (rtx
, rtx
, rtx
);
185 extern rtx
ix86_find_base_term (rtx
);
186 extern bool ix86_check_movabs (rtx
, int);
187 extern bool ix86_check_no_addr_space (rtx
);
188 extern void ix86_split_idivmod (machine_mode
, rtx
[], bool);
189 extern bool ix86_hardreg_mov_ok (rtx
, rtx
);
191 extern rtx
assign_386_stack_local (machine_mode
, enum ix86_stack_slot
);
192 extern int ix86_attr_length_immediate_default (rtx_insn
*, bool);
193 extern int ix86_attr_length_address_default (rtx_insn
*);
194 extern int ix86_attr_length_vex_default (rtx_insn
*, bool, bool);
196 extern rtx
ix86_libcall_value (machine_mode
);
197 extern bool ix86_function_arg_regno_p (int);
198 extern void ix86_asm_output_function_label (FILE *, const char *, tree
);
199 extern void ix86_call_abi_override (const_tree
);
200 extern int ix86_reg_parm_stack_space (const_tree
);
202 extern bool ix86_libc_has_function (enum function_class fn_class
);
204 extern void x86_order_regs_for_local_alloc (void);
205 extern void x86_function_profiler (FILE *, int);
206 extern void x86_emit_floatuns (rtx
[2]);
207 extern void ix86_emit_fp_unordered_jump (rtx
);
209 extern void ix86_emit_i387_sinh (rtx
, rtx
);
210 extern void ix86_emit_i387_cosh (rtx
, rtx
);
211 extern void ix86_emit_i387_tanh (rtx
, rtx
);
212 extern void ix86_emit_i387_asinh (rtx
, rtx
);
213 extern void ix86_emit_i387_acosh (rtx
, rtx
);
214 extern void ix86_emit_i387_atanh (rtx
, rtx
);
215 extern void ix86_emit_i387_log1p (rtx
, rtx
);
216 extern void ix86_emit_i387_round (rtx
, rtx
);
217 extern void ix86_emit_swdivsf (rtx
, rtx
, rtx
, machine_mode
);
218 extern void ix86_emit_swsqrtsf (rtx
, rtx
, machine_mode
, bool);
220 extern enum rtx_code
ix86_reverse_condition (enum rtx_code
, machine_mode
);
222 extern void ix86_expand_lround (rtx
, rtx
);
223 extern void ix86_expand_lfloorceil (rtx
, rtx
, bool);
224 extern void ix86_expand_rint (rtx
, rtx
);
225 extern void ix86_expand_floorceil (rtx
, rtx
, bool);
226 extern void ix86_expand_floorceildf_32 (rtx
, rtx
, bool);
227 extern void ix86_expand_trunc (rtx
, rtx
);
228 extern void ix86_expand_truncdf_32 (rtx
, rtx
);
229 extern void ix86_expand_round (rtx
, rtx
);
230 extern void ix86_expand_rounddf_32 (rtx
, rtx
);
231 extern void ix86_expand_round_sse4 (rtx
, rtx
);
233 extern void ix86_expand_vecop_qihi_partial (enum rtx_code
, rtx
, rtx
, rtx
);
234 extern void ix86_expand_vecop_qihi (enum rtx_code
, rtx
, rtx
, rtx
);
235 extern rtx
ix86_split_stack_guard (void);
237 extern void ix86_move_vector_high_sse_to_mmx (rtx
);
238 extern void ix86_split_mmx_pack (rtx
[], enum rtx_code
);
239 extern void ix86_split_mmx_punpck (rtx
[], bool);
240 extern void ix86_expand_avx_vzeroupper (void);
241 extern void ix86_expand_atomic_fetch_op_loop (rtx
, rtx
, rtx
, enum rtx_code
,
243 extern void ix86_expand_cmpxchg_loop (rtx
*, rtx
, rtx
, rtx
, rtx
, rtx
,
244 bool, rtx_code_label
*);
245 extern rtx
ix86_expand_fast_convert_bf_to_sf (rtx
);
246 extern rtx
ix86_memtag_untagged_pointer (rtx
, rtx
);
247 extern bool ix86_memtag_can_tag_addresses (void);
250 extern void init_cumulative_args (CUMULATIVE_ARGS
*, tree
, rtx
, tree
, int);
251 #endif /* TREE_CODE */
253 #endif /* RTX_CODE */
256 extern int ix86_data_alignment (tree
, unsigned int, bool);
257 extern unsigned int ix86_local_alignment (tree
, machine_mode
,
258 unsigned int, bool = false);
259 extern unsigned int ix86_minimum_alignment (tree
, machine_mode
,
261 extern tree
ix86_handle_shared_attribute (tree
*, tree
, tree
, int, bool *);
262 extern tree
ix86_handle_selectany_attribute (tree
*, tree
, tree
, int, bool *);
263 extern int x86_field_alignment (tree
, int);
264 extern tree
ix86_valid_target_attribute_tree (tree
, tree
,
265 struct gcc_options
*,
266 struct gcc_options
*, bool);
267 extern unsigned int ix86_get_callcvt (const_tree
);
271 extern rtx
ix86_tls_module_base (void);
272 extern bool ix86_gpr_tls_address_pattern_p (rtx
);
273 extern bool ix86_tls_address_pattern_p (rtx
);
274 extern rtx
ix86_rewrite_tls_address (rtx
);
276 extern void ix86_expand_vector_init (bool, rtx
, rtx
);
277 extern void ix86_expand_vector_set (bool, rtx
, rtx
, int);
278 extern void ix86_expand_vector_set_var (rtx
, rtx
, rtx
);
279 extern void ix86_expand_vector_extract (bool, rtx
, rtx
, int);
280 extern void ix86_expand_reduc (rtx (*)(rtx
, rtx
, rtx
), rtx
, rtx
);
282 extern void ix86_expand_vec_extract_even_odd (rtx
, rtx
, rtx
, unsigned);
283 extern bool ix86_expand_pextr (rtx
*);
284 extern bool ix86_expand_pinsr (rtx
*);
285 extern void ix86_expand_mul_widen_evenodd (rtx
, rtx
, rtx
, bool, bool);
286 extern void ix86_expand_mul_widen_hilo (rtx
, rtx
, rtx
, bool, bool);
287 extern void ix86_expand_sse2_mulv4si3 (rtx
, rtx
, rtx
);
288 extern void ix86_expand_sse2_mulvxdi3 (rtx
, rtx
, rtx
);
289 extern void ix86_expand_sse2_abs (rtx
, rtx
);
290 extern bool ix86_expand_vector_init_duplicate (bool, machine_mode
, rtx
,
292 extern bool ix86_extract_perm_from_pool_constant (int*, rtx
);
295 extern void ix86_target_macros (void);
296 extern void ix86_register_pragmas (void);
299 extern void i386_pe_unique_section (tree
, int);
300 extern void i386_pe_declare_function_type (FILE *, const char *, int);
301 extern void i386_pe_record_external_function (tree
, const char *);
302 extern void i386_pe_maybe_record_exported_symbol (tree
, const char *, int);
303 extern void i386_pe_encode_section_info (tree
, rtx
, int);
304 extern bool i386_pe_binds_local_p (const_tree
);
305 extern const char *i386_pe_strip_name_encoding_full (const char *);
306 extern bool i386_pe_valid_dllimport_attribute_p (const_tree
);
307 extern unsigned int i386_pe_section_type_flags (tree
, const char *, int);
308 extern void i386_pe_asm_named_section (const char *, unsigned int, tree
);
309 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree
,
313 extern void i386_pe_file_end (void);
314 extern void i386_pe_asm_lto_start (void);
315 extern void i386_pe_asm_lto_end (void);
316 extern void i386_pe_start_function (FILE *, const char *, tree
);
317 extern void i386_pe_end_function (FILE *, const char *, tree
);
318 extern void i386_pe_end_cold_function (FILE *, const char *, tree
);
319 extern void i386_pe_assemble_visibility (tree
, int);
320 extern tree
i386_pe_mangle_decl_assembler_name (tree
, tree
);
321 extern tree
i386_pe_mangle_assembler_name (const char *);
322 extern void i386_pe_record_stub (const char *);
324 extern void i386_pe_seh_init (FILE *);
325 extern void i386_pe_seh_end_prologue (FILE *);
326 extern void i386_pe_seh_cold_init (FILE *, const char *);
327 extern void i386_pe_seh_unwind_emit (FILE *, rtx_insn
*);
328 extern void i386_pe_seh_emit_except_personality (rtx
);
329 extern void i386_pe_seh_init_sections (void);
331 /* In winnt-cxx.cc and winnt-stubs.cc */
332 extern void i386_pe_adjust_class_at_definition (tree
);
333 extern bool i386_pe_type_dllimport_p (tree
);
334 extern bool i386_pe_type_dllexport_p (tree
);
336 extern int i386_pe_reloc_rw_mask (void);
338 extern char internal_label_prefix
[16];
339 extern int internal_label_prefix_len
;
341 extern bool ix86_epilogue_uses (int);
345 rtx base
, index
, disp
;
350 extern bool ix86_decompose_address (rtx
, struct ix86_address
*);
351 extern int memory_address_length (rtx
, bool);
352 extern void x86_output_aligned_bss (FILE *, tree
, const char *,
353 unsigned HOST_WIDE_INT
, unsigned);
354 extern void x86_elf_aligned_decl_common (FILE *, tree
, const char *,
355 unsigned HOST_WIDE_INT
, unsigned);
358 extern void ix86_fp_comparison_codes (enum rtx_code code
, enum rtx_code
*,
359 enum rtx_code
*, enum rtx_code
*);
360 extern enum rtx_code
ix86_fp_compare_code_to_integer (enum rtx_code
);
362 extern int asm_preferred_eh_data_format (int, int);
365 extern enum attr_cpu ix86_schedule
;
368 extern const char * ix86_output_call_insn (rtx_insn
*insn
, rtx call_op
);
369 extern const char * ix86_output_indirect_jmp (rtx call_op
);
370 extern const char * ix86_output_function_return (bool long_p
);
371 extern const char * ix86_output_indirect_function_return (rtx ret_op
);
372 extern void ix86_split_simple_return_pop_internal (rtx
);
373 extern bool ix86_operands_ok_for_move_multiple (rtx
*operands
, bool load
,
375 extern int ix86_min_insn_size (rtx_insn
*);
377 extern int ix86_issue_rate (void);
378 extern int ix86_adjust_cost (rtx_insn
*insn
, int dep_type
, rtx_insn
*dep_insn
,
379 int cost
, unsigned int);
380 extern int ia32_multipass_dfa_lookahead (void);
381 extern bool ix86_macro_fusion_p (void);
382 extern bool ix86_macro_fusion_pair_p (rtx_insn
*condgen
, rtx_insn
*condjmp
);
384 extern bool ix86_bd_has_dispatch (rtx_insn
*insn
, int action
);
385 extern void ix86_bd_do_dispatch (rtx_insn
*insn
, int mode
);
387 extern void ix86_core2i7_init_hooks (void);
389 extern int ix86_atom_sched_reorder (FILE *, int, rtx_insn
**, int *, int);
391 extern poly_int64
ix86_push_rounding (poly_int64
);
394 /* Target data for multipass lookahead scheduling.
395 Currently used for Core 2/i7 tuning. */
396 struct ix86_first_cycle_multipass_data_
398 /* The length (in bytes) of ifetch block in this solution. */
399 int ifetch_block_len
;
400 /* Number of instructions in ifetch block in this solution. */
401 int ifetch_block_n_insns
;
402 /* Bitmap to remember changes to ready_try for backtracking. */
403 sbitmap ready_try_change
;
404 /* Size of the bitmap. */
405 int ready_try_change_size
;
407 # define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DATA_T \
408 struct ix86_first_cycle_multipass_data_
409 #endif /* RTX_CODE */
411 const addr_space_t ADDR_SPACE_SEG_FS
= 1;
412 const addr_space_t ADDR_SPACE_SEG_GS
= 2;
414 namespace gcc
{ class context
; }
417 extern rtl_opt_pass
*make_pass_insert_vzeroupper (gcc::context
*);
418 extern rtl_opt_pass
*make_pass_stv (gcc::context
*);
419 extern rtl_opt_pass
*make_pass_insert_endbr_and_patchable_area
421 extern rtl_opt_pass
*make_pass_remove_partial_avx_dependency
424 extern bool ix86_has_no_direct_extern_access
;
426 /* In i386-expand.cc. */
427 bool ix86_check_builtin_isa_match (unsigned int, HOST_WIDE_INT
*,