1/* Definitions of target machine for GCC for IA-32.
2 Copyright (C) 1988-2023 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 3, or (at your option)
9any later version.
10
11GCC is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with GCC; see the file COPYING3. If not see
18<http://www.gnu.org/licenses/>. */
19
20/* In i386-common.cc. */
21extern 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.cc */
27extern bool ix86_target_stack_probe (void);
28extern bool ix86_can_use_return_insn_p (void);
29extern bool ix86_function_ms_hook_prologue (const_tree fn);
30extern void ix86_setup_frame_addresses (void);
31extern bool ix86_rip_relative_addr_p (struct ix86_address *parts);
32
33extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int);
34extern void ix86_expand_prologue (void);
35extern void ix86_maybe_emit_epilogue_vzeroupper (void);
36extern void ix86_expand_epilogue (int);
37extern void ix86_expand_split_stack_prologue (void);
38
39extern void ix86_output_addr_vec_elt (FILE *, int);
40extern void ix86_output_addr_diff_elt (FILE *, int, int);
41
42extern const char *ix86_output_ssemov (rtx_insn *, rtx *);
43
44extern enum calling_abi ix86_cfun_abi (void);
45extern enum calling_abi ix86_function_type_abi (const_tree);
46
47extern bool ix86_use_pseudo_pic_reg (void);
48
49extern void ix86_reset_previous_fndecl (void);
50
51extern bool ix86_using_red_zone (void);
52
53extern unsigned int ix86_regmode_natural_size (machine_mode);
54extern bool ix86_check_builtin_isa_match (unsigned int fcode);
55#ifdef RTX_CODE
56extern int standard_80387_constant_p (rtx);
57extern const char *standard_80387_constant_opcode (rtx);
58extern rtx standard_80387_constant_rtx (int);
59extern int standard_sse_constant_p (rtx, machine_mode);
60extern const char *standard_sse_constant_opcode (rtx_insn *, rtx *);
61extern bool ix86_standard_x87sse_constant_load_p (const rtx_insn *, rtx);
62extern bool ix86_pre_reload_split (void);
63extern bool symbolic_reference_mentioned_p (rtx);
64extern bool extended_reg_mentioned_p (rtx);
65extern bool x86_extended_QIreg_mentioned_p (rtx_insn *);
66extern bool x86_extended_reg_mentioned_p (rtx);
67extern bool x86_extended_rex2reg_mentioned_p (rtx);
68extern bool x86_evex_reg_mentioned_p (rtx [], int);
69extern bool x86_maybe_negate_const_int (rtx *, machine_mode);
70extern machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx);
71
72extern int avx_vpermilp_parallel (rtx par, machine_mode mode);
73extern int avx_vperm2f128_parallel (rtx par, machine_mode mode);
74
75extern int vpternlog_redundant_operand_mask (rtx);
76extern void substitute_vpternlog_operands (rtx[]);
77
78extern bool ix86_expand_strlen (rtx, rtx, rtx, rtx);
79extern bool ix86_expand_set_or_cpymem (rtx, rtx, rtx, rtx, rtx, rtx,
80 rtx, rtx, rtx, rtx, bool);
81extern bool ix86_expand_cmpstrn_or_cmpmem (rtx, rtx, rtx, rtx, rtx, bool);
82
83extern enum reg_class ix86_insn_base_reg_class (rtx_insn *);
84extern bool ix86_regno_ok_for_insn_base_p (int, rtx_insn *);
85extern enum reg_class ix86_insn_index_reg_class (rtx_insn *);
86extern bool constant_address_p (rtx);
87extern bool legitimate_pic_operand_p (rtx);
88extern bool legitimate_pic_address_disp_p (rtx);
89extern bool ix86_force_load_from_GOT_p (rtx, bool = false);
90extern void print_reg (rtx, int, FILE*);
91extern void ix86_print_operand (FILE *, rtx, int);
92
93extern void split_double_mode (machine_mode, rtx[], int, rtx[], rtx[]);
94extern void split_double_concat (machine_mode, rtx, rtx lo, rtx);
95
96extern const char *output_set_got (rtx, rtx);
97extern const char *output_387_binary_op (rtx_insn *, rtx*);
98extern const char *output_387_reg_move (rtx_insn *, rtx*);
99extern const char *output_fix_trunc (rtx_insn *, rtx*, bool);
100extern const char *output_fp_compare (rtx_insn *, rtx*, bool, bool);
101extern const char *output_adjust_stack_and_probe (rtx);
102extern const char *output_probe_stack_range (rtx, rtx);
103
104extern void ix86_output_patchable_area (unsigned int, bool);
105
106extern void ix86_expand_clear (rtx);
107extern void ix86_expand_move (machine_mode, rtx[]);
108extern void ix86_expand_vector_move (machine_mode, rtx[]);
109extern void ix86_expand_vector_move_misalign (machine_mode, rtx[]);
110extern rtx ix86_fixup_binary_operands (enum rtx_code,
111 machine_mode, rtx[]);
112extern void ix86_fixup_binary_operands_no_copy (enum rtx_code,
113 machine_mode, rtx[]);
114extern void ix86_expand_binary_operator (enum rtx_code,
115 machine_mode, rtx[]);
116extern void ix86_expand_vector_logical_operator (enum rtx_code,
117 machine_mode, rtx[]);
118extern bool ix86_binary_operator_ok (enum rtx_code, machine_mode, rtx[3]);
119extern bool ix86_avoid_lea_for_add (rtx_insn *, rtx[]);
120extern bool ix86_use_lea_for_mov (rtx_insn *, rtx[]);
121extern bool ix86_avoid_lea_for_addr (rtx_insn *, rtx[]);
122extern void ix86_split_lea_for_addr (rtx_insn *, rtx[], machine_mode);
123extern bool ix86_lea_for_add_ok (rtx_insn *, rtx[]);
124extern int ix86_last_zero_store_uid;
125extern bool ix86_vec_interleave_v2df_operator_ok (rtx operands[3], bool high);
126extern bool ix86_dep_by_shift_count (const_rtx set_insn, const_rtx use_insn);
127extern bool ix86_agi_dependent (rtx_insn *set_insn, rtx_insn *use_insn);
128extern void ix86_expand_unary_operator (enum rtx_code, machine_mode,
129 rtx[]);
130extern rtx ix86_build_const_vector (machine_mode, bool, rtx);
131extern rtx ix86_build_signbit_mask (machine_mode, bool, bool);
132extern HOST_WIDE_INT ix86_convert_const_vector_to_integer (rtx,
133 machine_mode);
134extern void ix86_split_convert_uns_si_sse (rtx[]);
135extern void ix86_expand_convert_uns_didf_sse (rtx, rtx);
136extern void ix86_expand_convert_uns_sixf_sse (rtx, rtx);
137extern void ix86_expand_convert_uns_sidf_sse (rtx, rtx);
138extern void ix86_expand_convert_uns_sisf_sse (rtx, rtx);
139extern void ix86_expand_convert_sign_didf_sse (rtx, rtx);
140extern void ix86_expand_vector_convert_uns_vsivsf (rtx, rtx);
141extern rtx ix86_expand_adjust_ufix_to_sfix_si (rtx, rtx *);
142extern enum ix86_fpcmp_strategy ix86_fp_comparison_strategy (enum rtx_code);
143extern void ix86_expand_fp_absneg_operator (enum rtx_code, machine_mode,
144 rtx[]);
145extern void ix86_split_fp_absneg_operator (enum rtx_code, machine_mode,
146 rtx[]);
147extern void ix86_expand_copysign (rtx []);
148extern void ix86_expand_xorsign (rtx []);
149extern bool ix86_unary_operator_ok (enum rtx_code, machine_mode, rtx[2]);
150extern bool ix86_match_ccmode (rtx, machine_mode);
151extern bool ix86_match_ptest_ccmode (rtx);
152extern void ix86_expand_branch (enum rtx_code, rtx, rtx, rtx);
153extern void ix86_expand_setcc (rtx, enum rtx_code, rtx, rtx);
154extern bool ix86_expand_int_movcc (rtx[]);
155extern bool ix86_expand_fp_movcc (rtx[]);
156extern bool ix86_expand_fp_vcond (rtx[]);
157extern bool ix86_expand_int_vcond (rtx[]);
158extern void ix86_expand_vec_perm (rtx[]);
159extern bool ix86_expand_mask_vec_cmp (rtx, enum rtx_code, rtx, rtx);
160extern bool ix86_expand_int_vec_cmp (rtx[]);
161extern bool ix86_expand_fp_vec_cmp (rtx[]);
162extern void ix86_expand_sse_movcc (rtx, rtx, rtx, rtx);
163extern void ix86_expand_sse_extend (rtx, rtx, bool);
164extern void ix86_expand_sse_unpack (rtx, rtx, bool, bool);
165extern void ix86_expand_fp_spaceship (rtx, rtx, rtx);
166extern bool ix86_expand_int_addcc (rtx[]);
167extern void ix86_expand_carry (rtx arg);
168extern rtx_insn *ix86_expand_call (rtx, rtx, rtx, rtx, rtx, bool);
169extern bool ix86_call_use_plt_p (rtx);
170extern void ix86_split_call_vzeroupper (rtx, rtx);
171extern void x86_initialize_trampoline (rtx, rtx, rtx);
172extern rtx ix86_zero_extend_to_Pmode (rtx);
173extern void ix86_split_long_move (rtx[]);
174extern void ix86_split_ashl (rtx *, rtx, machine_mode);
175extern void ix86_split_ashr (rtx *, rtx, machine_mode);
176extern void ix86_split_lshr (rtx *, rtx, machine_mode);
177extern void ix86_expand_v1ti_shift (enum rtx_code, rtx[]);
178extern void ix86_expand_v1ti_rotate (enum rtx_code, rtx[]);
179extern void ix86_expand_v1ti_ashiftrt (rtx[]);
180extern rtx ix86_replace_reg_with_reg (rtx, rtx, rtx);
181extern rtx ix86_find_base_term (rtx);
182extern bool ix86_check_movabs (rtx, int);
183extern bool ix86_check_no_addr_space (rtx);
184extern void ix86_split_idivmod (machine_mode, rtx[], bool);
185extern bool ix86_hardreg_mov_ok (rtx, rtx);
186
187extern rtx assign_386_stack_local (machine_mode, enum ix86_stack_slot);
188extern int ix86_attr_length_immediate_default (rtx_insn *, bool);
189extern int ix86_attr_length_address_default (rtx_insn *);
190extern int ix86_attr_length_vex_default (rtx_insn *, bool, bool);
191
192extern rtx ix86_libcall_value (machine_mode);
193extern bool ix86_function_arg_regno_p (int);
194extern void ix86_asm_output_function_label (FILE *, const char *, tree);
195extern void ix86_call_abi_override (const_tree);
196extern int ix86_reg_parm_stack_space (const_tree);
197
198extern bool ix86_libc_has_function (enum function_class fn_class);
199
200extern void x86_order_regs_for_local_alloc (void);
201extern void x86_function_profiler (FILE *, int);
202extern void x86_emit_floatuns (rtx [2]);
203extern void ix86_emit_fp_unordered_jump (rtx);
204
205extern void ix86_emit_i387_sinh (rtx, rtx);
206extern void ix86_emit_i387_cosh (rtx, rtx);
207extern void ix86_emit_i387_tanh (rtx, rtx);
208extern void ix86_emit_i387_asinh (rtx, rtx);
209extern void ix86_emit_i387_acosh (rtx, rtx);
210extern void ix86_emit_i387_atanh (rtx, rtx);
211extern void ix86_emit_i387_log1p (rtx, rtx);
212extern void ix86_emit_i387_round (rtx, rtx);
213extern void ix86_emit_swdivsf (rtx, rtx, rtx, machine_mode);
214extern void ix86_emit_swsqrtsf (rtx, rtx, machine_mode, bool);
215
216extern enum rtx_code ix86_reverse_condition (enum rtx_code, machine_mode);
217
218extern void ix86_expand_lround (rtx, rtx);
219extern void ix86_expand_lfloorceil (rtx, rtx, bool);
220extern void ix86_expand_rint (rtx, rtx);
221extern void ix86_expand_floorceil (rtx, rtx, bool);
222extern void ix86_expand_floorceildf_32 (rtx, rtx, bool);
223extern void ix86_expand_trunc (rtx, rtx);
224extern void ix86_expand_truncdf_32 (rtx, rtx);
225extern void ix86_expand_round (rtx, rtx);
226extern void ix86_expand_rounddf_32 (rtx, rtx);
227extern void ix86_expand_round_sse4 (rtx, rtx);
228
229extern void ix86_expand_vecop_qihi_partial (enum rtx_code, rtx, rtx, rtx);
230extern void ix86_expand_vecop_qihi (enum rtx_code, rtx, rtx, rtx);
231extern rtx ix86_split_stack_guard (void);
232
233extern void ix86_move_vector_high_sse_to_mmx (rtx);
234extern void ix86_split_mmx_pack (rtx[], enum rtx_code);
235extern void ix86_split_mmx_punpck (rtx[], bool);
236extern void ix86_expand_avx_vzeroupper (void);
237extern void ix86_expand_atomic_fetch_op_loop (rtx, rtx, rtx, enum rtx_code,
238 bool, bool);
239extern void ix86_expand_cmpxchg_loop (rtx *, rtx, rtx, rtx, rtx, rtx,
240 bool, rtx_code_label *);
241extern rtx ix86_expand_fast_convert_bf_to_sf (rtx);
242extern rtx ix86_memtag_untagged_pointer (rtx, rtx);
243extern bool ix86_memtag_can_tag_addresses (void);
244
245#ifdef TREE_CODE
246extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, int);
247#endif /* TREE_CODE */
248
249#endif /* RTX_CODE */
250
251#ifdef TREE_CODE
252extern int ix86_data_alignment (tree, unsigned int, bool);
253extern unsigned int ix86_local_alignment (tree, machine_mode,
254 unsigned int, bool = false);
255extern unsigned int ix86_minimum_alignment (tree, machine_mode,
256 unsigned int);
257extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *);
258extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *);
259extern int x86_field_alignment (tree, int);
260extern tree ix86_valid_target_attribute_tree (tree, tree,
261 struct gcc_options *,
262 struct gcc_options *, bool);
263extern unsigned int ix86_get_callcvt (const_tree);
264
265#endif
266
267extern rtx ix86_tls_module_base (void);
268extern bool ix86_gpr_tls_address_pattern_p (rtx);
269extern bool ix86_tls_address_pattern_p (rtx);
270extern rtx ix86_rewrite_tls_address (rtx);
271
272extern void ix86_expand_vector_init (bool, rtx, rtx);
273extern void ix86_expand_vector_set (bool, rtx, rtx, int);
274extern void ix86_expand_vector_set_var (rtx, rtx, rtx);
275extern void ix86_expand_vector_extract (bool, rtx, rtx, int);
276extern void ix86_expand_reduc (rtx (*)(rtx, rtx, rtx), rtx, rtx);
277
278extern void ix86_expand_vec_extract_even_odd (rtx, rtx, rtx, unsigned);
279extern bool ix86_expand_pextr (rtx *);
280extern bool ix86_expand_pinsr (rtx *);
281extern void ix86_expand_mul_widen_evenodd (rtx, rtx, rtx, bool, bool);
282extern void ix86_expand_mul_widen_hilo (rtx, rtx, rtx, bool, bool);
283extern void ix86_expand_sse2_mulv4si3 (rtx, rtx, rtx);
284extern void ix86_expand_sse2_mulvxdi3 (rtx, rtx, rtx);
285extern void ix86_expand_sse2_abs (rtx, rtx);
286extern bool ix86_expand_vector_init_duplicate (bool, machine_mode, rtx,
287 rtx);
288extern bool ix86_extract_perm_from_pool_constant (int*, rtx);
289
290/* In i386-c.cc */
291extern void ix86_target_macros (void);
292extern void ix86_register_pragmas (void);
293
294/* In winnt.cc */
295extern void i386_pe_unique_section (tree, int);
296extern void i386_pe_declare_function_type (FILE *, const char *, int);
297extern void i386_pe_record_external_function (tree, const char *);
298extern void i386_pe_maybe_record_exported_symbol (tree, const char *, int);
299extern void i386_pe_encode_section_info (tree, rtx, int);
300extern bool i386_pe_binds_local_p (const_tree);
301extern const char *i386_pe_strip_name_encoding_full (const char *);
302extern bool i386_pe_valid_dllimport_attribute_p (const_tree);
303extern unsigned int i386_pe_section_type_flags (tree, const char *, int);
304extern void i386_pe_asm_named_section (const char *, unsigned int, tree);
305extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree,
306 const char *,
307 HOST_WIDE_INT,
308 HOST_WIDE_INT);
309extern void i386_pe_file_end (void);
310extern void i386_pe_asm_lto_start (void);
311extern void i386_pe_asm_lto_end (void);
312extern void i386_pe_start_function (FILE *, const char *, tree);
313extern void i386_pe_end_function (FILE *, const char *, tree);
314extern void i386_pe_end_cold_function (FILE *, const char *, tree);
315extern void i386_pe_assemble_visibility (tree, int);
316extern tree i386_pe_mangle_decl_assembler_name (tree, tree);
317extern tree i386_pe_mangle_assembler_name (const char *);
318extern void i386_pe_record_stub (const char *);
319
320extern void i386_pe_seh_init (FILE *);
321extern void i386_pe_seh_end_prologue (FILE *);
322extern void i386_pe_seh_cold_init (FILE *, const char *);
323extern void i386_pe_seh_unwind_emit (FILE *, rtx_insn *);
324extern void i386_pe_seh_emit_except_personality (rtx);
325extern void i386_pe_seh_init_sections (void);
326
327/* In winnt-cxx.cc and winnt-stubs.cc */
328extern void i386_pe_adjust_class_at_definition (tree);
329extern bool i386_pe_type_dllimport_p (tree);
330extern bool i386_pe_type_dllexport_p (tree);
331
332extern int i386_pe_reloc_rw_mask (void);
333
334extern char internal_label_prefix[16];
335extern int internal_label_prefix_len;
336
337extern bool ix86_epilogue_uses (int);
338
339struct ix86_address
340{
341 rtx base, index, disp;
342 HOST_WIDE_INT scale;
343 addr_space_t seg;
344};
345
346extern bool ix86_decompose_address (rtx, struct ix86_address *);
347extern int memory_address_length (rtx, bool);
348extern void x86_output_aligned_bss (FILE *, tree, const char *,
349 unsigned HOST_WIDE_INT, unsigned);
350extern void x86_elf_aligned_decl_common (FILE *, tree, const char *,
351 unsigned HOST_WIDE_INT, unsigned);
352
353#ifdef RTX_CODE
354extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *,
355 enum rtx_code *, enum rtx_code *);
356extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code);
357#endif
358extern int asm_preferred_eh_data_format (int, int);
359
360#ifdef HAVE_ATTR_cpu
361extern enum attr_cpu ix86_schedule;
362#endif
363
364extern const char * ix86_output_call_insn (rtx_insn *insn, rtx call_op);
365extern const char * ix86_output_indirect_jmp (rtx call_op);
366extern const char * ix86_output_function_return (bool long_p);
367extern const char * ix86_output_indirect_function_return (rtx ret_op);
368extern void ix86_split_simple_return_pop_internal (rtx);
369extern bool ix86_operands_ok_for_move_multiple (rtx *operands, bool load,
370 machine_mode mode);
371extern int ix86_min_insn_size (rtx_insn *);
372
373extern int ix86_issue_rate (void);
374extern int ix86_adjust_cost (rtx_insn *insn, int dep_type, rtx_insn *dep_insn,
375 int cost, unsigned int);
376extern int ia32_multipass_dfa_lookahead (void);
377extern bool ix86_macro_fusion_p (void);
378extern bool ix86_macro_fusion_pair_p (rtx_insn *condgen, rtx_insn *condjmp);
379
380extern bool ix86_bd_has_dispatch (rtx_insn *insn, int action);
381extern void ix86_bd_do_dispatch (rtx_insn *insn, int mode);
382
383extern void ix86_core2i7_init_hooks (void);
384
385extern int ix86_atom_sched_reorder (FILE *, int, rtx_insn **, int *, int);
386
387extern poly_int64 ix86_push_rounding (poly_int64);
388
389#ifdef RTX_CODE
390/* Target data for multipass lookahead scheduling.
391 Currently used for Core 2/i7 tuning. */
392struct ix86_first_cycle_multipass_data_
393{
394 /* The length (in bytes) of ifetch block in this solution. */
395 int ifetch_block_len;
396 /* Number of instructions in ifetch block in this solution. */
397 int ifetch_block_n_insns;
398 /* Bitmap to remember changes to ready_try for backtracking. */
399 sbitmap ready_try_change;
400 /* Size of the bitmap. */
401 int ready_try_change_size;
402};
403# define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DATA_T \
404 struct ix86_first_cycle_multipass_data_
405#endif /* RTX_CODE */
406
407const addr_space_t ADDR_SPACE_SEG_FS = 1;
408const addr_space_t ADDR_SPACE_SEG_GS = 2;
409
410namespace gcc { class context; }
411class rtl_opt_pass;
412
413extern rtl_opt_pass *make_pass_insert_vzeroupper (gcc::context *);
414extern rtl_opt_pass *make_pass_stv (gcc::context *);
415extern rtl_opt_pass *make_pass_insert_endbr_and_patchable_area
416 (gcc::context *);
417extern rtl_opt_pass *make_pass_remove_partial_avx_dependency
418 (gcc::context *);
419
420extern bool ix86_has_no_direct_extern_access;
421
422/* In i386-expand.cc. */
423bool ix86_check_builtin_isa_match (unsigned int, HOST_WIDE_INT*,
424 HOST_WIDE_INT*);
425

source code of gcc/config/i386/i386-protos.h