1/* Definitions of target machine for GCC for IA-32.
2   Copyright (C) 1988-2015 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);
30
31extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int);
32extern void ix86_expand_prologue (void);
33extern void ix86_maybe_emit_epilogue_vzeroupper (void);
34extern void ix86_expand_epilogue (int);
35extern void ix86_expand_split_stack_prologue (void);
36
37extern void ix86_output_addr_vec_elt (FILE *, int);
38extern void ix86_output_addr_diff_elt (FILE *, int, int);
39
40extern enum calling_abi ix86_cfun_abi (void);
41extern enum calling_abi ix86_function_type_abi (const_tree);
42
43extern bool ix86_use_pseudo_pic_reg (void);
44
45extern void ix86_reset_previous_fndecl (void);
46
47#ifdef RTX_CODE
48extern int standard_80387_constant_p (rtx);
49extern const char *standard_80387_constant_opcode (rtx);
50extern rtx standard_80387_constant_rtx (int);
51extern int standard_sse_constant_p (rtx);
52extern const char *standard_sse_constant_opcode (rtx_insn *, rtx);
53extern bool symbolic_reference_mentioned_p (rtx);
54extern bool extended_reg_mentioned_p (rtx);
55extern bool x86_extended_QIreg_mentioned_p (rtx_insn *);
56extern bool x86_extended_reg_mentioned_p (rtx);
57extern bool x86_maybe_negate_const_int (rtx *, machine_mode);
58extern machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx);
59
60extern int avx_vpermilp_parallel (rtx par, machine_mode mode);
61extern int avx_vperm2f128_parallel (rtx par, machine_mode mode);
62
63extern bool ix86_expand_strlen (rtx, rtx, rtx, rtx);
64extern bool ix86_expand_set_or_movmem (rtx, rtx, rtx, rtx, rtx, rtx,
65				       rtx, rtx, rtx, rtx, bool);
66
67extern bool constant_address_p (rtx);
68extern bool legitimate_pic_operand_p (rtx);
69extern bool legitimate_pic_address_disp_p (rtx);
70extern bool ix86_legitimize_reload_address (rtx, machine_mode,
71					    int, int, int);
72extern void print_reg (rtx, int, FILE*);
73extern void ix86_print_operand (FILE *, rtx, int);
74
75extern void split_double_mode (machine_mode, rtx[], int, rtx[], rtx[]);
76
77extern const char *output_set_got (rtx, rtx);
78extern const char *output_387_binary_op (rtx, rtx*);
79extern const char *output_387_reg_move (rtx, rtx*);
80extern const char *output_fix_trunc (rtx_insn *, rtx*, bool);
81extern const char *output_fp_compare (rtx, rtx*, bool, bool);
82extern const char *output_adjust_stack_and_probe (rtx);
83extern const char *output_probe_stack_range (rtx, rtx);
84
85extern void ix86_expand_clear (rtx);
86extern void ix86_expand_move (machine_mode, rtx[]);
87extern void ix86_expand_vector_move (machine_mode, rtx[]);
88extern void ix86_expand_vector_move_misalign (machine_mode, rtx[]);
89extern rtx ix86_fixup_binary_operands (enum rtx_code,
90				       machine_mode, rtx[]);
91extern void ix86_fixup_binary_operands_no_copy (enum rtx_code,
92						machine_mode, rtx[]);
93extern void ix86_expand_binary_operator (enum rtx_code,
94					 machine_mode, rtx[]);
95extern void ix86_expand_vector_logical_operator (enum rtx_code,
96						 machine_mode, rtx[]);
97extern bool ix86_binary_operator_ok (enum rtx_code, machine_mode, rtx[]);
98extern bool ix86_avoid_lea_for_add (rtx_insn *, rtx[]);
99extern bool ix86_use_lea_for_mov (rtx_insn *, rtx[]);
100extern bool ix86_avoid_lea_for_addr (rtx_insn *, rtx[]);
101extern void ix86_split_lea_for_addr (rtx_insn *, rtx[], machine_mode);
102extern bool ix86_lea_for_add_ok (rtx_insn *, rtx[]);
103extern bool ix86_vec_interleave_v2df_operator_ok (rtx operands[3], bool high);
104extern bool ix86_dep_by_shift_count (const_rtx set_insn, const_rtx use_insn);
105extern bool ix86_agi_dependent (rtx_insn *set_insn, rtx_insn *use_insn);
106extern void ix86_expand_unary_operator (enum rtx_code, machine_mode,
107					rtx[]);
108extern rtx ix86_build_const_vector (machine_mode, bool, rtx);
109extern rtx ix86_build_signbit_mask (machine_mode, bool, bool);
110extern void ix86_split_convert_uns_si_sse (rtx[]);
111extern void ix86_expand_convert_uns_didf_sse (rtx, rtx);
112extern void ix86_expand_convert_uns_sixf_sse (rtx, rtx);
113extern void ix86_expand_convert_uns_sidf_sse (rtx, rtx);
114extern void ix86_expand_convert_uns_sisf_sse (rtx, rtx);
115extern void ix86_expand_convert_sign_didf_sse (rtx, rtx);
116extern void ix86_expand_vector_convert_uns_vsivsf (rtx, rtx);
117extern rtx ix86_expand_adjust_ufix_to_sfix_si (rtx, rtx *);
118extern enum ix86_fpcmp_strategy ix86_fp_comparison_strategy (enum rtx_code);
119extern void ix86_expand_fp_absneg_operator (enum rtx_code, machine_mode,
120					    rtx[]);
121extern void ix86_expand_copysign (rtx []);
122extern void ix86_split_copysign_const (rtx []);
123extern void ix86_split_copysign_var (rtx []);
124extern bool ix86_unary_operator_ok (enum rtx_code, machine_mode, rtx[]);
125extern bool ix86_match_ccmode (rtx, machine_mode);
126extern void ix86_expand_branch (enum rtx_code, rtx, rtx, rtx);
127extern void ix86_expand_setcc (rtx, enum rtx_code, rtx, rtx);
128extern bool ix86_expand_int_movcc (rtx[]);
129extern bool ix86_expand_fp_movcc (rtx[]);
130extern bool ix86_expand_fp_vcond (rtx[]);
131extern bool ix86_expand_int_vcond (rtx[]);
132extern void ix86_expand_vec_perm (rtx[]);
133extern bool ix86_expand_vec_perm_const (rtx[]);
134extern void ix86_expand_sse_unpack (rtx, rtx, bool, bool);
135extern bool ix86_expand_int_addcc (rtx[]);
136extern rtx ix86_expand_call (rtx, rtx, rtx, rtx, rtx, bool);
137extern void ix86_split_call_vzeroupper (rtx, rtx);
138extern void x86_initialize_trampoline (rtx, rtx, rtx);
139extern rtx ix86_zero_extend_to_Pmode (rtx);
140extern void ix86_split_long_move (rtx[]);
141extern void ix86_split_ashl (rtx *, rtx, machine_mode);
142extern void ix86_split_ashr (rtx *, rtx, machine_mode);
143extern void ix86_split_lshr (rtx *, rtx, machine_mode);
144extern rtx ix86_find_base_term (rtx);
145extern bool ix86_check_movabs (rtx, int);
146extern void ix86_split_idivmod (machine_mode, rtx[], bool);
147
148extern rtx assign_386_stack_local (machine_mode, enum ix86_stack_slot);
149extern int ix86_attr_length_immediate_default (rtx_insn *, bool);
150extern int ix86_attr_length_address_default (rtx_insn *);
151extern int ix86_attr_length_vex_default (rtx_insn *, bool, bool);
152
153extern machine_mode ix86_fp_compare_mode (enum rtx_code);
154
155extern rtx ix86_libcall_value (machine_mode);
156extern bool ix86_function_arg_regno_p (int);
157extern void ix86_asm_output_function_label (FILE *, const char *, tree);
158extern void ix86_call_abi_override (const_tree);
159extern int ix86_reg_parm_stack_space (const_tree);
160
161extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx,
162				  rtx, rtx, rtx);
163extern bool ix86_hard_regno_mode_ok (int, machine_mode);
164extern bool ix86_modes_tieable_p (machine_mode, machine_mode);
165extern bool ix86_secondary_memory_needed (enum reg_class, enum reg_class,
166					  machine_mode, int);
167extern bool ix86_cannot_change_mode_class (machine_mode,
168					   machine_mode, enum reg_class);
169
170extern bool ix86_libc_has_function (enum function_class fn_class);
171
172extern void x86_order_regs_for_local_alloc (void);
173extern void x86_function_profiler (FILE *, int);
174extern void x86_emit_floatuns (rtx [2]);
175extern void ix86_emit_fp_unordered_jump (rtx);
176
177extern void ix86_emit_i387_log1p (rtx, rtx);
178extern void ix86_emit_i387_round (rtx, rtx);
179extern void ix86_emit_swdivsf (rtx, rtx, rtx, machine_mode);
180extern void ix86_emit_swsqrtsf (rtx, rtx, machine_mode, bool);
181
182extern enum rtx_code ix86_reverse_condition (enum rtx_code, machine_mode);
183
184extern void ix86_expand_lround (rtx, rtx);
185extern void ix86_expand_lfloorceil (rtx, rtx, bool);
186extern void ix86_expand_rint (rtx, rtx);
187extern void ix86_expand_floorceil (rtx, rtx, bool);
188extern void ix86_expand_floorceildf_32 (rtx, rtx, bool);
189extern void ix86_expand_round_sse4 (rtx, rtx);
190extern void ix86_expand_round (rtx, rtx);
191extern void ix86_expand_rounddf_32 (rtx, rtx);
192extern void ix86_expand_trunc (rtx, rtx);
193extern void ix86_expand_truncdf_32 (rtx, rtx);
194
195extern void ix86_expand_vecop_qihi (enum rtx_code, rtx, rtx, rtx);
196
197#ifdef TREE_CODE
198extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, int);
199#endif	/* TREE_CODE  */
200
201#endif	/* RTX_CODE  */
202
203#ifdef TREE_CODE
204extern int ix86_data_alignment (tree, int, bool);
205extern unsigned int ix86_local_alignment (tree, machine_mode,
206					  unsigned int);
207extern unsigned int ix86_minimum_alignment (tree, machine_mode,
208					    unsigned int);
209extern int ix86_constant_alignment (tree, int);
210extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *);
211extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *);
212extern int x86_field_alignment (tree, int);
213extern tree ix86_valid_target_attribute_tree (tree,
214					      struct gcc_options *,
215					      struct gcc_options *);
216extern unsigned int ix86_get_callcvt (const_tree);
217
218#endif
219
220extern rtx ix86_tls_module_base (void);
221
222extern void ix86_expand_vector_init (bool, rtx, rtx);
223extern void ix86_expand_vector_set (bool, rtx, rtx, int);
224extern void ix86_expand_vector_extract (bool, rtx, rtx, int);
225extern void ix86_expand_reduc (rtx (*)(rtx, rtx, rtx), rtx, rtx);
226
227extern void ix86_expand_vec_extract_even_odd (rtx, rtx, rtx, unsigned);
228extern bool ix86_expand_pinsr (rtx *);
229extern void ix86_expand_mul_widen_evenodd (rtx, rtx, rtx, bool, bool);
230extern void ix86_expand_mul_widen_hilo (rtx, rtx, rtx, bool, bool);
231extern void ix86_expand_sse2_mulv4si3 (rtx, rtx, rtx);
232extern void ix86_expand_sse2_mulvxdi3 (rtx, rtx, rtx);
233extern void ix86_expand_sse2_abs (rtx, rtx);
234
235extern bool ix86_bnd_prefixed_insn_p (rtx);
236
237/* In i386-c.c  */
238extern void ix86_target_macros (void);
239extern void ix86_register_pragmas (void);
240
241/* In winnt.c  */
242extern void i386_pe_unique_section (tree, int);
243extern void i386_pe_declare_function_type (FILE *, const char *, int);
244extern void i386_pe_record_external_function (tree, const char *);
245extern void i386_pe_maybe_record_exported_symbol (tree, const char *, int);
246extern void i386_pe_encode_section_info (tree, rtx, int);
247extern bool i386_pe_binds_local_p (const_tree);
248extern const char *i386_pe_strip_name_encoding_full (const char *);
249extern bool i386_pe_valid_dllimport_attribute_p (const_tree);
250extern unsigned int i386_pe_section_type_flags (tree, const char *, int);
251extern void i386_pe_asm_named_section (const char *, unsigned int, tree);
252extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree,
253						    const char *,
254						    HOST_WIDE_INT,
255						    HOST_WIDE_INT);
256extern void i386_pe_file_end (void);
257extern void i386_pe_start_function (FILE *, const char *, tree);
258extern void i386_pe_end_function (FILE *, const char *, tree);
259extern void i386_pe_assemble_visibility (tree, int);
260extern tree i386_pe_mangle_decl_assembler_name (tree, tree);
261extern tree i386_pe_mangle_assembler_name (const char *);
262extern void i386_pe_record_stub (const char *);
263
264extern void i386_pe_seh_init (FILE *);
265extern void i386_pe_seh_end_prologue (FILE *);
266extern void i386_pe_seh_unwind_emit (FILE *, rtx_insn *);
267extern void i386_pe_seh_emit_except_personality (rtx);
268extern void i386_pe_seh_init_sections (void);
269
270/* In winnt-cxx.c and winnt-stubs.c  */
271extern void i386_pe_adjust_class_at_definition (tree);
272extern bool i386_pe_type_dllimport_p (tree);
273extern bool i386_pe_type_dllexport_p (tree);
274
275extern int i386_pe_reloc_rw_mask (void);
276
277extern rtx maybe_get_pool_constant (rtx);
278
279extern char internal_label_prefix[16];
280extern int internal_label_prefix_len;
281
282enum ix86_address_seg { SEG_DEFAULT, SEG_FS, SEG_GS };
283struct ix86_address
284{
285  rtx base, index, disp;
286  HOST_WIDE_INT scale;
287  enum ix86_address_seg seg;
288};
289
290extern int ix86_decompose_address (rtx, struct ix86_address *);
291extern int memory_address_length (rtx, bool);
292extern void x86_output_aligned_bss (FILE *, tree, const char *,
293				    unsigned HOST_WIDE_INT, int);
294extern void x86_elf_aligned_common (FILE *, const char *,
295				    unsigned HOST_WIDE_INT, int);
296
297#ifdef RTX_CODE
298extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *,
299				      enum rtx_code *, enum rtx_code *);
300extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code);
301#endif
302extern int asm_preferred_eh_data_format (int, int);
303
304#ifdef HAVE_ATTR_cpu
305extern enum attr_cpu ix86_schedule;
306#endif
307
308extern const char * ix86_output_call_insn (rtx_insn *insn, rtx call_op);
309
310#ifdef RTX_CODE
311/* Target data for multipass lookahead scheduling.
312   Currently used for Core 2/i7 tuning.  */
313struct ix86_first_cycle_multipass_data_
314{
315  /* The length (in bytes) of ifetch block in this solution.  */
316  int ifetch_block_len;
317  /* Number of instructions in ifetch block in this solution.  */
318  int ifetch_block_n_insns;
319  /* Bitmap to remember changes to ready_try for backtracking.  */
320  sbitmap ready_try_change;
321  /* Size of the bitmap.  */
322  int ready_try_change_size;
323};
324# define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DATA_T	\
325  struct ix86_first_cycle_multipass_data_
326#endif /* RTX_CODE */
327