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