1 /* Definitions of target machine for GCC for IA-32.
2    Copyright (C) 1988, 1992, 1994, 1995, 1996, 1996, 1997, 1998, 1999,
3    2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
4    Free Software Foundation, Inc.
5 
6 This file is part of GCC.
7 
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12 
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 GNU General Public License for more details.
17 
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3.  If not see
20 <http://www.gnu.org/licenses/>.  */
21 
22 /* In i386-common.c.  */
23 extern bool ix86_handle_option (struct gcc_options *opts,
24 				struct gcc_options *opts_set ATTRIBUTE_UNUSED,
25 				const struct cl_decoded_option *decoded,
26 				location_t loc);
27 
28 /* Functions in i386.c */
29 extern bool ix86_target_stack_probe (void);
30 extern bool ix86_can_use_return_insn_p (void);
31 extern void ix86_setup_frame_addresses (void);
32 
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);
38 
39 extern void ix86_output_addr_vec_elt (FILE *, int);
40 extern void ix86_output_addr_diff_elt (FILE *, int, int);
41 
42 extern enum calling_abi ix86_cfun_abi (void);
43 extern enum calling_abi ix86_function_type_abi (const_tree);
44 
45 #ifdef RTX_CODE
46 extern int standard_80387_constant_p (rtx);
47 extern const char *standard_80387_constant_opcode (rtx);
48 extern rtx standard_80387_constant_rtx (int);
49 extern int standard_sse_constant_p (rtx);
50 extern const char *standard_sse_constant_opcode (rtx, rtx);
51 extern bool symbolic_reference_mentioned_p (rtx);
52 extern bool extended_reg_mentioned_p (rtx);
53 extern bool x86_extended_QIreg_mentioned_p (rtx);
54 extern bool x86_extended_reg_mentioned_p (rtx);
55 extern bool x86_maybe_negate_const_int (rtx *, enum machine_mode);
56 extern enum machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx);
57 
58 extern int avx_vpermilp_parallel (rtx par, enum machine_mode mode);
59 extern int avx_vperm2f128_parallel (rtx par, enum machine_mode mode);
60 
61 extern bool ix86_expand_movmem (rtx, rtx, rtx, rtx, rtx, rtx);
62 extern bool ix86_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx);
63 extern bool ix86_expand_strlen (rtx, rtx, rtx, rtx);
64 
65 extern bool constant_address_p (rtx);
66 extern bool legitimate_pic_operand_p (rtx);
67 extern bool legitimate_pic_address_disp_p (rtx);
68 extern bool ix86_legitimize_reload_address (rtx, enum machine_mode,
69 					    int, int, int);
70 extern void print_reg (rtx, int, FILE*);
71 extern void ix86_print_operand (FILE *, rtx, int);
72 
73 extern void split_double_mode (enum machine_mode, rtx[], int, rtx[], rtx[]);
74 
75 extern const char *output_set_got (rtx, rtx);
76 extern const char *output_387_binary_op (rtx, rtx*);
77 extern const char *output_387_reg_move (rtx, rtx*);
78 extern const char *output_fix_trunc (rtx, rtx*, bool);
79 extern const char *output_fp_compare (rtx, rtx*, bool, bool);
80 extern const char *output_adjust_stack_and_probe (rtx);
81 extern const char *output_probe_stack_range (rtx, rtx);
82 
83 extern void ix86_expand_clear (rtx);
84 extern void ix86_expand_move (enum machine_mode, rtx[]);
85 extern void ix86_expand_vector_move (enum machine_mode, rtx[]);
86 extern void ix86_expand_vector_move_misalign (enum machine_mode, rtx[]);
87 extern void ix86_expand_push (enum machine_mode, rtx);
88 extern rtx ix86_fixup_binary_operands (enum rtx_code,
89 				       enum machine_mode, rtx[]);
90 extern void ix86_fixup_binary_operands_no_copy (enum rtx_code,
91 						enum machine_mode, rtx[]);
92 extern void ix86_expand_binary_operator (enum rtx_code,
93 					 enum machine_mode, rtx[]);
94 extern bool ix86_binary_operator_ok (enum rtx_code, enum machine_mode, rtx[]);
95 extern bool ix86_avoid_lea_for_add (rtx, rtx[]);
96 extern bool ix86_use_lea_for_mov (rtx, rtx[]);
97 extern bool ix86_avoid_lea_for_addr (rtx, rtx[]);
98 extern void ix86_split_lea_for_addr (rtx[], enum machine_mode);
99 extern bool ix86_lea_for_add_ok (rtx, rtx[]);
100 extern bool ix86_vec_interleave_v2df_operator_ok (rtx operands[3], bool high);
101 extern bool ix86_dep_by_shift_count (const_rtx set_insn, const_rtx use_insn);
102 extern bool ix86_agi_dependent (rtx set_insn, rtx use_insn);
103 extern void ix86_expand_unary_operator (enum rtx_code, enum machine_mode,
104 					rtx[]);
105 extern rtx ix86_build_const_vector (enum machine_mode, bool, rtx);
106 extern rtx ix86_build_signbit_mask (enum machine_mode, bool, bool);
107 extern void ix86_split_convert_uns_si_sse (rtx[]);
108 extern void ix86_expand_convert_uns_didf_sse (rtx, rtx);
109 extern void ix86_expand_convert_uns_sixf_sse (rtx, rtx);
110 extern void ix86_expand_convert_uns_sidf_sse (rtx, rtx);
111 extern void ix86_expand_convert_uns_sisf_sse (rtx, rtx);
112 extern void ix86_expand_convert_sign_didf_sse (rtx, rtx);
113 extern void ix86_expand_vector_convert_uns_vsivsf (rtx, rtx);
114 extern rtx ix86_expand_adjust_ufix_to_sfix_si (rtx, rtx *);
115 extern enum ix86_fpcmp_strategy ix86_fp_comparison_strategy (enum rtx_code);
116 extern void ix86_expand_fp_absneg_operator (enum rtx_code, enum machine_mode,
117 					    rtx[]);
118 extern void ix86_expand_copysign (rtx []);
119 extern void ix86_split_copysign_const (rtx []);
120 extern void ix86_split_copysign_var (rtx []);
121 extern bool ix86_unary_operator_ok (enum rtx_code, enum machine_mode, rtx[]);
122 extern bool ix86_match_ccmode (rtx, enum machine_mode);
123 extern void ix86_expand_branch (enum rtx_code, rtx, rtx, rtx);
124 extern void ix86_expand_setcc (rtx, enum rtx_code, rtx, rtx);
125 extern bool ix86_expand_int_movcc (rtx[]);
126 extern bool ix86_expand_fp_movcc (rtx[]);
127 extern bool ix86_expand_fp_vcond (rtx[]);
128 extern bool ix86_expand_int_vcond (rtx[]);
129 extern void ix86_expand_vec_perm (rtx[]);
130 extern bool ix86_expand_vec_perm_const (rtx[]);
131 extern void ix86_expand_sse_unpack (rtx[], bool, bool);
132 extern bool ix86_expand_int_addcc (rtx[]);
133 extern rtx ix86_expand_call (rtx, rtx, rtx, rtx, rtx, bool);
134 extern void ix86_split_call_vzeroupper (rtx, rtx);
135 extern void x86_initialize_trampoline (rtx, rtx, rtx);
136 extern rtx ix86_zero_extend_to_Pmode (rtx);
137 extern void ix86_split_long_move (rtx[]);
138 extern void ix86_split_ashl (rtx *, rtx, enum machine_mode);
139 extern void ix86_split_ashr (rtx *, rtx, enum machine_mode);
140 extern void ix86_split_lshr (rtx *, rtx, enum machine_mode);
141 extern rtx ix86_find_base_term (rtx);
142 extern bool ix86_check_movabs (rtx, int);
143 extern void ix86_split_idivmod (enum machine_mode, rtx[], bool);
144 
145 extern rtx assign_386_stack_local (enum machine_mode, enum ix86_stack_slot);
146 extern int ix86_attr_length_immediate_default (rtx, bool);
147 extern int ix86_attr_length_address_default (rtx);
148 extern int ix86_attr_length_vex_default (rtx, bool, bool);
149 
150 extern enum machine_mode ix86_fp_compare_mode (enum rtx_code);
151 
152 extern rtx ix86_libcall_value (enum machine_mode);
153 extern bool ix86_function_arg_regno_p (int);
154 extern void ix86_asm_output_function_label (FILE *, const char *, tree);
155 extern rtx ix86_force_to_memory (enum machine_mode, rtx);
156 extern void ix86_free_from_memory (enum machine_mode);
157 extern void ix86_call_abi_override (const_tree);
158 extern int ix86_reg_parm_stack_space (const_tree);
159 
160 extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx,
161 				  rtx, rtx, rtx, rtx);
162 extern bool ix86_hard_regno_mode_ok (int, enum machine_mode);
163 extern bool ix86_modes_tieable_p (enum machine_mode, enum machine_mode);
164 extern bool ix86_secondary_memory_needed (enum reg_class, enum reg_class,
165 					  enum machine_mode, int);
166 extern bool ix86_cannot_change_mode_class (enum machine_mode,
167 					   enum machine_mode, enum reg_class);
168 extern int ix86_mode_needed (int, rtx);
169 extern void emit_i387_cw_initialization (int);
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_log1p (rtx, rtx);
176 extern void ix86_emit_i387_round (rtx, rtx);
177 extern void ix86_emit_swdivsf (rtx, rtx, rtx, enum machine_mode);
178 extern void ix86_emit_swsqrtsf (rtx, rtx, enum machine_mode, bool);
179 
180 extern enum rtx_code ix86_reverse_condition (enum rtx_code, enum machine_mode);
181 
182 extern void ix86_expand_lround (rtx, rtx);
183 extern void ix86_expand_lfloorceil (rtx, rtx, bool);
184 extern void ix86_expand_rint (rtx, rtx);
185 extern void ix86_expand_floorceil (rtx, rtx, bool);
186 extern void ix86_expand_floorceildf_32 (rtx, rtx, bool);
187 extern void ix86_expand_round_sse4 (rtx, rtx);
188 extern void ix86_expand_round (rtx, rtx);
189 extern void ix86_expand_rounddf_32 (rtx, rtx);
190 extern void ix86_expand_trunc (rtx, rtx);
191 extern void ix86_expand_truncdf_32 (rtx, rtx);
192 
193 #ifdef TREE_CODE
194 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, int);
195 #endif	/* TREE_CODE  */
196 
197 #endif	/* RTX_CODE  */
198 
199 #ifdef TREE_CODE
200 extern int ix86_data_alignment (tree, int);
201 extern unsigned int ix86_local_alignment (tree, enum machine_mode,
202 					  unsigned int);
203 extern unsigned int ix86_minimum_alignment (tree, enum machine_mode,
204 					    unsigned int);
205 extern int ix86_constant_alignment (tree, int);
206 extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *);
207 extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *);
208 extern int x86_field_alignment (tree, int);
209 extern tree ix86_valid_target_attribute_tree (tree);
210 extern unsigned int ix86_get_callcvt (const_tree);
211 
212 #endif
213 
214 extern rtx ix86_tls_module_base (void);
215 
216 extern void ix86_expand_vector_init (bool, rtx, rtx);
217 extern void ix86_expand_vector_set (bool, rtx, rtx, int);
218 extern void ix86_expand_vector_extract (bool, rtx, rtx, int);
219 extern void ix86_expand_reduc (rtx (*)(rtx, rtx, rtx), rtx, rtx);
220 
221 extern void ix86_expand_vec_extract_even_odd (rtx, rtx, rtx, unsigned);
222 extern bool ix86_expand_pinsr (rtx *);
223 
224 /* In i386-c.c  */
225 extern void ix86_target_macros (void);
226 extern void ix86_register_pragmas (void);
227 
228 /* In winnt.c  */
229 extern void i386_pe_unique_section (tree, int);
230 extern void i386_pe_declare_function_type (FILE *, const char *, int);
231 extern void i386_pe_record_external_function (tree, const char *);
232 extern void i386_pe_maybe_record_exported_symbol (tree, const char *, int);
233 extern void i386_pe_encode_section_info (tree, rtx, int);
234 extern bool i386_pe_binds_local_p (const_tree);
235 extern const char *i386_pe_strip_name_encoding_full (const char *);
236 extern bool i386_pe_valid_dllimport_attribute_p (const_tree);
237 extern unsigned int i386_pe_section_type_flags (tree, const char *, int);
238 extern void i386_pe_asm_named_section (const char *, unsigned int, tree);
239 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree,
240 						    const char *,
241 						    HOST_WIDE_INT,
242 						    HOST_WIDE_INT);
243 extern void i386_pe_file_end (void);
244 extern void i386_pe_start_function (FILE *, const char *, tree);
245 extern void i386_pe_end_function (FILE *, const char *, tree);
246 extern void i386_pe_assemble_visibility (tree, int);
247 extern tree i386_pe_mangle_decl_assembler_name (tree, tree);
248 extern tree i386_pe_mangle_assembler_name (const char *);
249 
250 extern void i386_pe_seh_init (FILE *);
251 extern void i386_pe_seh_end_prologue (FILE *);
252 extern void i386_pe_seh_unwind_emit (FILE *, rtx);
253 
254 /* In winnt-cxx.c and winnt-stubs.c  */
255 extern void i386_pe_adjust_class_at_definition (tree);
256 extern bool i386_pe_type_dllimport_p (tree);
257 extern bool i386_pe_type_dllexport_p (tree);
258 
259 extern rtx maybe_get_pool_constant (rtx);
260 
261 extern char internal_label_prefix[16];
262 extern int internal_label_prefix_len;
263 
264 enum ix86_address_seg { SEG_DEFAULT, SEG_FS, SEG_GS };
265 struct ix86_address
266 {
267   rtx base, index, disp;
268   HOST_WIDE_INT scale;
269   enum ix86_address_seg seg;
270 };
271 
272 extern int ix86_decompose_address (rtx, struct ix86_address *);
273 extern int memory_address_length (rtx addr);
274 extern void x86_output_aligned_bss (FILE *, tree, const char *,
275 				    unsigned HOST_WIDE_INT, int);
276 extern void x86_elf_aligned_common (FILE *, const char *,
277 				    unsigned HOST_WIDE_INT, int);
278 
279 #ifdef RTX_CODE
280 extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *,
281 				      enum rtx_code *, enum rtx_code *);
282 extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code);
283 extern rtx construct_plt_address (rtx);
284 #endif
285 extern int asm_preferred_eh_data_format (int, int);
286 
287 #ifdef HAVE_ATTR_cpu
288 extern enum attr_cpu ix86_schedule;
289 #endif
290 
291 extern const char * ix86_output_call_insn (rtx insn, rtx call_op);
292 
293 #ifdef RTX_CODE
294 /* Target data for multipass lookahead scheduling.
295    Currently used for Core 2/i7 tuning.  */
296 struct ix86_first_cycle_multipass_data_
297 {
298   /* The length (in bytes) of ifetch block in this solution.  */
299   int ifetch_block_len;
300   /* Number of instructions in ifetch block in this solution.  */
301   int ifetch_block_n_insns;
302   /* Bitmap to remember changes to ready_try for backtracking.  */
303   sbitmap ready_try_change;
304   /* Size of the bitmap.  */
305   int ready_try_change_size;
306 };
307 # define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DATA_T	\
308   struct ix86_first_cycle_multipass_data_
309 #endif /* RTX_CODE */
310