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 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 /* Functions in i386.c */ 23 extern void override_options (bool); 24 extern void optimization_options (int, int); 25 extern void ix86_conditional_register_usage (void); 26 27 extern int ix86_can_use_return_insn_p (void); 28 extern void ix86_setup_frame_addresses (void); 29 30 extern HOST_WIDE_INT ix86_initial_elimination_offset (int, int); 31 extern void ix86_expand_prologue (void); 32 extern void ix86_expand_epilogue (int); 33 34 extern void ix86_output_addr_vec_elt (FILE *, int); 35 extern void ix86_output_addr_diff_elt (FILE *, int, int); 36 37 #ifdef RTX_CODE 38 extern int standard_80387_constant_p (rtx); 39 extern const char *standard_80387_constant_opcode (rtx); 40 extern rtx standard_80387_constant_rtx (int); 41 extern int standard_sse_constant_p (rtx); 42 extern const char *standard_sse_constant_opcode (rtx, rtx); 43 extern int symbolic_reference_mentioned_p (rtx); 44 extern bool extended_reg_mentioned_p (rtx); 45 extern bool x86_extended_QIreg_mentioned_p (rtx); 46 extern bool x86_extended_reg_mentioned_p (rtx); 47 extern enum machine_mode ix86_cc_mode (enum rtx_code, rtx, rtx); 48 49 extern int avx_vpermilp_parallel (rtx par, enum machine_mode mode); 50 extern int avx_vperm2f128_parallel (rtx par, enum machine_mode mode); 51 52 extern int ix86_expand_movmem (rtx, rtx, rtx, rtx, rtx, rtx); 53 extern int ix86_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx); 54 extern int ix86_expand_strlen (rtx, rtx, rtx, rtx); 55 56 extern bool legitimate_constant_p (rtx); 57 extern bool constant_address_p (rtx); 58 extern bool legitimate_pic_operand_p (rtx); 59 extern int legitimate_pic_address_disp_p (rtx); 60 extern bool ix86_legitimize_reload_address (rtx, enum machine_mode, 61 int, int, int); 62 extern void print_reg (rtx, int, FILE*); 63 extern void print_operand (FILE*, rtx, int); 64 extern void print_operand_address (FILE*, rtx); 65 extern bool output_addr_const_extra (FILE*, rtx); 66 67 extern void split_di (rtx[], int, rtx[], rtx[]); 68 extern void split_ti (rtx[], int, rtx[], rtx[]); 69 70 extern const char *output_set_got (rtx, rtx); 71 extern const char *output_387_binary_op (rtx, rtx*); 72 extern const char *output_387_reg_move (rtx, rtx*); 73 extern const char *output_fix_trunc (rtx, rtx*, int); 74 extern const char *output_fp_compare (rtx, rtx*, int, int); 75 76 extern void ix86_expand_clear (rtx); 77 extern void ix86_expand_move (enum machine_mode, rtx[]); 78 extern void ix86_expand_vector_move (enum machine_mode, rtx[]); 79 extern void ix86_expand_vector_move_misalign (enum machine_mode, rtx[]); 80 extern void ix86_expand_push (enum machine_mode, rtx); 81 extern rtx ix86_fixup_binary_operands (enum rtx_code, 82 enum machine_mode, rtx[]); 83 extern void ix86_fixup_binary_operands_no_copy (enum rtx_code, 84 enum machine_mode, rtx[]); 85 extern void ix86_expand_binary_operator (enum rtx_code, 86 enum machine_mode, rtx[]); 87 extern int ix86_binary_operator_ok (enum rtx_code, enum machine_mode, rtx[]); 88 extern bool ix86_lea_for_add_ok (enum rtx_code, rtx, rtx[]); 89 extern bool ix86_vec_interleave_v2df_operator_ok (rtx operands[3], bool high); 90 extern bool ix86_dep_by_shift_count (const_rtx set_insn, const_rtx use_insn); 91 extern bool ix86_agi_dependent (rtx set_insn, rtx use_insn); 92 extern void ix86_expand_unary_operator (enum rtx_code, enum machine_mode, 93 rtx[]); 94 extern rtx ix86_build_const_vector (enum machine_mode, bool, rtx); 95 extern rtx ix86_build_signbit_mask (enum machine_mode, bool, bool); 96 extern void ix86_split_convert_uns_si_sse (rtx[]); 97 extern void ix86_expand_convert_uns_didf_sse (rtx, rtx); 98 extern void ix86_expand_convert_uns_sixf_sse (rtx, rtx); 99 extern void ix86_expand_convert_uns_sidf_sse (rtx, rtx); 100 extern void ix86_expand_convert_uns_sisf_sse (rtx, rtx); 101 extern void ix86_expand_convert_sign_didf_sse (rtx, rtx); 102 extern enum ix86_fpcmp_strategy ix86_fp_comparison_strategy (enum rtx_code); 103 extern void ix86_expand_fp_absneg_operator (enum rtx_code, enum machine_mode, 104 rtx[]); 105 extern void ix86_expand_copysign (rtx []); 106 extern void ix86_split_copysign_const (rtx []); 107 extern void ix86_split_copysign_var (rtx []); 108 extern int ix86_unary_operator_ok (enum rtx_code, enum machine_mode, rtx[]); 109 extern int ix86_match_ccmode (rtx, enum machine_mode); 110 extern rtx ix86_expand_compare (enum rtx_code); 111 extern int ix86_use_fcomi_compare (enum rtx_code); 112 extern void ix86_expand_branch (enum rtx_code, rtx); 113 extern void ix86_expand_setcc (enum rtx_code, rtx); 114 extern int ix86_expand_int_movcc (rtx[]); 115 extern int ix86_expand_fp_movcc (rtx[]); 116 extern bool ix86_expand_fp_vcond (rtx[]); 117 extern bool ix86_expand_int_vcond (rtx[]); 118 extern void ix86_expand_sse_unpack (rtx[], bool, bool); 119 extern void ix86_expand_sse4_unpack (rtx[], bool, bool); 120 extern int ix86_expand_int_addcc (rtx[]); 121 extern void ix86_expand_call (rtx, rtx, rtx, rtx, rtx, int); 122 extern void x86_initialize_trampoline (rtx, rtx, rtx); 123 extern rtx ix86_zero_extend_to_Pmode (rtx); 124 extern void ix86_split_long_move (rtx[]); 125 extern void ix86_split_ashl (rtx *, rtx, enum machine_mode); 126 extern void ix86_split_ashr (rtx *, rtx, enum machine_mode); 127 extern void ix86_split_lshr (rtx *, rtx, enum machine_mode); 128 extern rtx ix86_find_base_term (rtx); 129 extern int ix86_check_movabs (rtx, int); 130 131 extern rtx assign_386_stack_local (enum machine_mode, enum ix86_stack_slot); 132 extern int ix86_attr_length_immediate_default (rtx, int); 133 extern int ix86_attr_length_address_default (rtx); 134 extern int ix86_attr_length_vex_default (rtx, int, int); 135 136 extern enum machine_mode ix86_fp_compare_mode (enum rtx_code); 137 138 extern rtx ix86_libcall_value (enum machine_mode); 139 extern bool ix86_function_value_regno_p (int); 140 extern bool ix86_function_arg_regno_p (int); 141 extern int ix86_function_arg_boundary (enum machine_mode, const_tree); 142 extern bool ix86_solaris_return_in_memory (const_tree, const_tree); 143 extern rtx ix86_force_to_memory (enum machine_mode, rtx); 144 extern void ix86_free_from_memory (enum machine_mode); 145 extern enum calling_abi ix86_cfun_abi (void); 146 extern enum calling_abi ix86_function_type_abi (const_tree); 147 extern void ix86_call_abi_override (const_tree); 148 extern tree ix86_fn_abi_va_list (tree); 149 extern tree ix86_canonical_va_list_type (tree); 150 extern int ix86_enum_va_list (int, const char **, tree *); 151 extern int ix86_reg_parm_stack_space (const_tree); 152 153 extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx, 154 rtx, rtx, rtx, rtx); 155 extern bool ix86_hard_regno_mode_ok (int, enum machine_mode); 156 extern bool ix86_modes_tieable_p (enum machine_mode, enum machine_mode); 157 extern int ix86_register_move_cost (enum machine_mode, enum reg_class, 158 enum reg_class); 159 extern int ix86_secondary_memory_needed (enum reg_class, enum reg_class, 160 enum machine_mode, int); 161 extern bool ix86_cannot_change_mode_class (enum machine_mode, 162 enum machine_mode, enum reg_class); 163 extern enum reg_class ix86_preferred_reload_class (rtx, enum reg_class); 164 extern enum reg_class ix86_preferred_output_reload_class (rtx, enum reg_class); 165 extern int ix86_memory_move_cost (enum machine_mode, enum reg_class, int); 166 extern int ix86_mode_needed (int, rtx); 167 extern void emit_i387_cw_initialization (int); 168 extern void x86_order_regs_for_local_alloc (void); 169 extern void x86_function_profiler (FILE *, int); 170 extern void x86_emit_floatuns (rtx [2]); 171 extern void ix86_emit_fp_unordered_jump (rtx); 172 173 extern void ix86_emit_i387_log1p (rtx, rtx); 174 extern void ix86_emit_swdivsf (rtx, rtx, rtx, enum machine_mode); 175 extern void ix86_emit_swsqrtsf (rtx, rtx, enum machine_mode, bool); 176 177 extern enum rtx_code ix86_reverse_condition (enum rtx_code, enum machine_mode); 178 179 extern void ix86_expand_lround (rtx, rtx); 180 extern void ix86_expand_lfloorceil (rtx, rtx, bool); 181 extern void ix86_expand_rint (rtx, rtx); 182 extern void ix86_expand_floorceil (rtx, rtx, bool); 183 extern void ix86_expand_floorceildf_32 (rtx, rtx, bool); 184 extern void ix86_expand_round (rtx, rtx); 185 extern void ix86_expand_rounddf_32 (rtx, rtx); 186 extern void ix86_expand_trunc (rtx, rtx); 187 extern void ix86_expand_truncdf_32 (rtx, rtx); 188 189 #ifdef TREE_CODE 190 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree); 191 extern rtx function_arg (CUMULATIVE_ARGS *, enum machine_mode, tree, int); 192 extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, 193 tree, int); 194 #endif 195 196 #endif 197 198 #ifdef TREE_CODE 199 extern int ix86_return_pops_args (tree, tree, int); 200 201 extern int ix86_data_alignment (tree, int); 202 extern unsigned int ix86_local_alignment (tree, enum machine_mode, 203 unsigned int); 204 extern unsigned int ix86_minimum_alignment (tree, enum machine_mode, 205 unsigned int); 206 extern int ix86_constant_alignment (tree, int); 207 extern tree ix86_handle_shared_attribute (tree *, tree, tree, int, bool *); 208 extern tree ix86_handle_selectany_attribute (tree *, tree, tree, int, bool *); 209 extern int x86_field_alignment (tree, int); 210 extern tree ix86_valid_target_attribute_tree (tree); 211 #endif 212 213 extern rtx ix86_tls_get_addr (void); 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_v4sf (rtx (*)(rtx, rtx, rtx), rtx, rtx); 220 221 extern void ix86_expand_vec_extract_even_odd (rtx, rtx, rtx, unsigned); 222 223 /* In i386-c.c */ 224 extern void ix86_target_macros (void); 225 extern void ix86_register_pragmas (void); 226 227 /* In winnt.c */ 228 extern void i386_pe_unique_section (tree, int); 229 extern void i386_pe_declare_function_type (FILE *, const char *, int); 230 extern void i386_pe_record_external_function (tree, const char *); 231 extern void i386_pe_maybe_record_exported_symbol (tree, const char *, int); 232 extern void i386_pe_encode_section_info (tree, rtx, int); 233 extern bool i386_pe_binds_local_p (const_tree); 234 extern const char *i386_pe_strip_name_encoding_full (const char *); 235 extern bool i386_pe_valid_dllimport_attribute_p (const_tree); 236 extern unsigned int i386_pe_section_type_flags (tree, const char *, int); 237 extern void i386_pe_asm_named_section (const char *, unsigned int, tree); 238 extern void i386_pe_asm_output_aligned_decl_common (FILE *, tree, 239 const char *, 240 HOST_WIDE_INT, 241 HOST_WIDE_INT); 242 extern void i386_pe_file_end (void); 243 extern tree i386_pe_mangle_decl_assembler_name (tree, tree); 244 245 /* In winnt-cxx.c and winnt-stubs.c */ 246 extern void i386_pe_adjust_class_at_definition (tree); 247 extern bool i386_pe_type_dllimport_p (tree); 248 extern bool i386_pe_type_dllexport_p (tree); 249 250 extern rtx maybe_get_pool_constant (rtx); 251 252 extern char internal_label_prefix[16]; 253 extern int internal_label_prefix_len; 254 255 enum ix86_address_seg { SEG_DEFAULT, SEG_FS, SEG_GS }; 256 struct ix86_address 257 { 258 rtx base, index, disp; 259 HOST_WIDE_INT scale; 260 enum ix86_address_seg seg; 261 }; 262 263 extern int ix86_decompose_address (rtx, struct ix86_address *); 264 extern int memory_address_length (rtx addr); 265 extern void x86_output_aligned_bss (FILE *, tree, const char *, 266 unsigned HOST_WIDE_INT, int); 267 extern void x86_elf_aligned_common (FILE *, const char *, 268 unsigned HOST_WIDE_INT, int); 269 270 #ifdef RTX_CODE 271 extern void ix86_fp_comparison_codes (enum rtx_code code, enum rtx_code *, 272 enum rtx_code *, enum rtx_code *); 273 extern enum rtx_code ix86_fp_compare_code_to_integer (enum rtx_code); 274 extern rtx construct_plt_address (rtx); 275 #endif 276 extern int asm_preferred_eh_data_format (int, int); 277 278 #ifdef HAVE_ATTR_cpu 279 extern enum attr_cpu ix86_schedule; 280 #endif 281