gcc/config/nds32/nds32-protos.h

   1 /* Prototypes for exported functions of Andes NDS32 cpu for GNU compiler
   2    Copyright (C) 2012-2024 Free Software Foundation, Inc.
   3    Contributed by Andes Technology Corporation.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21
  22 /* ------------------------------------------------------------------------ */
  23 \f
  24 /* Defining Data Structures for Per-function Information.  */
  25
  26 extern void nds32_init_expanders (void);
  27
  28 \f
  29 /* Register Usage.  */
  30
  31 /* -- Order of Allocation of Registers.  */
  32 extern void nds32_adjust_reg_alloc_order (void);
  33
  34 /* Register Classes.  */
  35
  36 extern enum reg_class nds32_regno_reg_class (int);
  37
  38 \f
  39 /* Stack Layout and Calling Conventions.  */
  40
  41 /* -- Basic Stack Layout.  */
  42
  43 extern rtx nds32_dynamic_chain_address (rtx);
  44 extern rtx nds32_return_addr_rtx (int, rtx);
  45
  46 /* -- Eliminating Frame Pointer and Arg Pointer.  */
  47
  48 extern HOST_WIDE_INT nds32_initial_elimination_offset (unsigned int,
  49                                                        unsigned int);
  50
  51 /* -- Passing Arguments in Registers.  */
  52
  53 extern void nds32_init_cumulative_args (CUMULATIVE_ARGS *,
  54                                         tree, rtx, tree, int);
  55
  56 /* -- Function Entry and Exit.  */
  57
  58 extern void nds32_expand_prologue (void);
  59 extern void nds32_expand_epilogue (bool);
  60 extern void nds32_expand_prologue_v3push (void);
  61 extern void nds32_expand_epilogue_v3pop (bool);
  62 extern void nds32_emit_push_fpr_callee_saved (int);
  63 extern void nds32_emit_pop_fpr_callee_saved (int);
  64 extern void nds32_emit_v3pop_fpr_callee_saved (int);
  65
  66 /* Controlling Debugging Information Format.  */
  67
  68 extern unsigned int nds32_debugger_regno (unsigned int);
  69
  70 /* ------------------------------------------------------------------------ */
  71
  72 /* Auxiliary functions for manipulation DI mode.  */
  73
  74 extern rtx nds32_di_high_part_subreg(rtx);
  75 extern rtx nds32_di_low_part_subreg(rtx);
  76
  77 /* Auxiliary functions for expanding rtl used in nds32-multiple.md.  */
  78
  79 extern rtx nds32_expand_load_multiple (int, int, rtx, rtx, bool, rtx *);
  80 extern rtx nds32_expand_store_multiple (int, int, rtx, rtx, bool, rtx *);
  81 extern bool nds32_expand_cpymemsi (rtx, rtx, rtx, rtx);
  82 extern bool nds32_expand_setmem (rtx, rtx, rtx, rtx, rtx, rtx);
  83 extern bool nds32_expand_strlen (rtx, rtx, rtx, rtx);
  84
  85 /* Auxiliary functions for expand unalign load instruction.  */
  86
  87 extern void nds32_expand_unaligned_load (rtx *, enum machine_mode);
  88
  89 /* Auxiliary functions for expand unalign store instruction.  */
  90
  91 extern void nds32_expand_unaligned_store (rtx *, enum machine_mode);
  92
  93 /* Auxiliary functions for multiple load/store predicate checking.  */
  94
  95 extern bool nds32_valid_multiple_load_store_p (rtx, bool, bool);
  96
  97 /* Auxiliary functions for guard function checking in pipelines.md.  */
  98
  99 extern bool nds32_n7_load_to_ii_p (rtx_insn *, rtx_insn *);
 100 extern bool nds32_n7_last_load_to_ii_p (rtx_insn *, rtx_insn *);
 101
 102 extern bool nds32_n8_load_to_ii_p (rtx_insn *, rtx_insn *);
 103 extern bool nds32_n8_load_bi_to_ii_p (rtx_insn *, rtx_insn *);
 104 extern bool nds32_n8_load_to_ex_p (rtx_insn *, rtx_insn *);
 105 extern bool nds32_n8_ex_to_ii_p (rtx_insn *, rtx_insn *);
 106 extern bool nds32_n8_last_load_to_ii_p (rtx_insn *, rtx_insn *);
 107 extern bool nds32_n8_last_load_two_to_ii_p (rtx_insn *, rtx_insn *);
 108 extern bool nds32_n8_last_load_to_ex_p (rtx_insn *, rtx_insn *);
 109
 110 extern bool nds32_e8_load_to_ii_p (rtx_insn *, rtx_insn *);
 111 extern bool nds32_e8_load_to_ex_p (rtx_insn *, rtx_insn *);
 112 extern bool nds32_e8_ex_to_ii_p (rtx_insn *, rtx_insn *);
 113 extern bool nds32_e8_last_load_to_ii_p (rtx_insn *, rtx_insn *);
 114 extern bool nds32_e8_last_load_to_ex_p (rtx_insn *, rtx_insn *);
 115
 116 extern bool nds32_n9_2r1w_mm_to_ex_p (rtx_insn *, rtx_insn *);
 117 extern bool nds32_n9_3r2w_mm_to_ex_p (rtx_insn *, rtx_insn *);
 118 extern bool nds32_n9_last_load_to_ex_p (rtx_insn *, rtx_insn *);
 119
 120 extern bool nds32_n10_ex_to_ex_p (rtx_insn *, rtx_insn *);
 121 extern bool nds32_n10_mm_to_ex_p (rtx_insn *, rtx_insn *);
 122 extern bool nds32_n10_last_load_to_ex_p (rtx_insn *, rtx_insn *);
 123
 124 extern bool nds32_gw_ex_to_ex_p (rtx_insn *, rtx_insn *);
 125 extern bool nds32_gw_mm_to_ex_p (rtx_insn *, rtx_insn *);
 126 extern bool nds32_gw_last_load_to_ex_p (rtx_insn *, rtx_insn *);
 127
 128 extern bool nds32_n13_e2_to_e1_p (rtx_insn *, rtx_insn *);
 129 extern bool nds32_n13_load_to_e1_p (rtx_insn *, rtx_insn *);
 130 extern bool nds32_n13_load_to_e2_p (rtx_insn *, rtx_insn *);
 131 extern bool nds32_n13_last_load_to_e1_p (rtx_insn *, rtx_insn *);
 132 extern bool nds32_n13_last_load_to_e2_p (rtx_insn *, rtx_insn *);
 133 extern bool nds32_n13_last_two_load_to_e1_p (rtx_insn *, rtx_insn *);
 134
 135 /* Auxiliary functions for stack operation predicate checking.  */
 136
 137 extern bool nds32_valid_stack_push_pop_p (rtx, bool);
 138
 139 /* Auxiliary functions for bit operation detection.  */
 140
 141 extern bool nds32_can_use_bclr_p (HOST_WIDE_INT);
 142 extern bool nds32_can_use_bset_p (HOST_WIDE_INT);
 143 extern bool nds32_can_use_btgl_p (HOST_WIDE_INT);
 144
 145 extern bool nds32_can_use_bitci_p (HOST_WIDE_INT);
 146
 147 extern bool nds32_const_double_range_ok_p (rtx, machine_mode,
 148                                            HOST_WIDE_INT, HOST_WIDE_INT);
 149
 150 extern bool nds32_const_unspec_p (rtx x);
 151
 152 /* Auxiliary function for 'Computing the Length of an Insn'.  */
 153
 154 extern int nds32_adjust_insn_length (rtx_insn *, int);
 155
 156 /* Auxiliary functions for FP_AS_GP detection.  */
 157
 158 extern bool nds32_symbol_load_store_p (rtx_insn *);
 159 extern bool nds32_naked_function_p (tree);
 160
 161 /* Auxiliary functions for jump table generation.  */
 162
 163 extern const char *nds32_output_casesi_pc_relative (rtx *);
 164 extern const char *nds32_output_casesi (rtx *);
 165
 166 /* Auxiliary functions for conditional branch generation.  */
 167
 168 extern enum nds32_expand_result_type nds32_expand_cbranch (rtx *);
 169 extern enum nds32_expand_result_type nds32_expand_cstore (rtx *);
 170 extern void nds32_expand_float_cbranch (rtx *);
 171 extern void nds32_expand_float_cstore (rtx *);
 172
 173 /* Auxiliary functions for conditional move generation.  */
 174
 175 extern enum nds32_expand_result_type nds32_expand_movcc (rtx *);
 176 extern void nds32_expand_float_movcc (rtx *);
 177
 178 /* Auxiliary functions for expand extv/insv instruction.  */
 179
 180 extern enum nds32_expand_result_type nds32_expand_extv (rtx *);
 181 extern enum nds32_expand_result_type nds32_expand_insv (rtx *);
 182
 183 /* Auxiliary functions for expand PIC instruction.  */
 184
 185 extern void nds32_expand_pic_move (rtx *);
 186
 187 /* Auxiliary functions to legitimize PIC address.  */
 188
 189 extern rtx nds32_legitimize_pic_address (rtx);
 190
 191 /* Auxiliary functions for expand TLS instruction.  */
 192
 193 extern void nds32_expand_tls_move (rtx *);
 194
 195 /* Auxiliary functions to legitimize TLS address.  */
 196
 197 extern rtx nds32_legitimize_tls_address (rtx);
 198
 199 /* Auxiliary functions to identify thread-local symbol.  */
 200
 201 extern bool nds32_tls_referenced_p (rtx);
 202
 203 /* Auxiliary functions for expand ICT instruction.  */
 204
 205 extern void nds32_expand_ict_move (rtx *);
 206
 207 /* Auxiliary functions to legitimize address for indirect-call symbol.  */
 208
 209 extern rtx nds32_legitimize_ict_address (rtx);
 210
 211 /* Auxiliary functions to identify indirect-call symbol.  */
 212
 213 extern bool nds32_indirect_call_referenced_p (rtx);
 214
 215 /* Auxiliary functions to identify long-call symbol.  */
 216 extern bool nds32_long_call_p (rtx);
 217
 218 /* Auxiliary functions to identify SYMBOL_REF and LABEL_REF pattern.  */
 219
 220 extern bool symbolic_reference_mentioned_p (rtx);
 221
 222 /* Auxiliary functions to identify conditional move comparison operand.  */
 223
 224 extern int nds32_cond_move_p (rtx);
 225
 226 /* Auxiliary functions to identify 16 bit addresing mode.  */
 227
 228 extern enum nds32_16bit_address_type nds32_mem_format (rtx);
 229
 230 /* Auxiliary functions to identify floating-point addresing mode.  */
 231
 232 extern bool nds32_float_mem_operand_p (rtx);
 233
 234 /* Auxiliary functions to output assembly code.  */
 235
 236 extern const char *nds32_output_16bit_store (rtx *, int);
 237 extern const char *nds32_output_16bit_load (rtx *, int);
 238 extern const char *nds32_output_32bit_store (rtx *, int);
 239 extern const char *nds32_output_32bit_load (rtx *, int);
 240 extern const char *nds32_output_32bit_load_s (rtx *, int);
 241 extern const char *nds32_output_float_load(rtx *);
 242 extern const char *nds32_output_float_store(rtx *);
 243 extern const char *nds32_output_smw_single_word (rtx *);
 244 extern const char *nds32_output_smw_double_word (rtx *);
 245 extern const char *nds32_output_lmw_single_word (rtx *);
 246 extern const char *nds32_output_double (rtx *, bool);
 247 extern const char *nds32_output_cbranchsi4_equality_zero (rtx_insn *, rtx *);
 248 extern const char *nds32_output_cbranchsi4_equality_reg (rtx_insn *, rtx *);
 249 extern const char *nds32_output_cbranchsi4_equality_reg_or_const_int (rtx_insn *,
 250                                                                       rtx *);
 251 extern const char *nds32_output_cbranchsi4_greater_less_zero (rtx_insn *, rtx *);
 252
 253 extern const char *nds32_output_unpkd8 (rtx, rtx, rtx, rtx, bool);
 254
 255 extern const char *nds32_output_call (rtx, rtx *, rtx,
 256                                       const char *, const char *, bool);
 257 extern const char *nds32_output_tls_desc (rtx *);
 258 extern const char *nds32_output_tls_ie (rtx *);
 259 extern const char *nds32_output_symrel (rtx *);
 260
 261 /* Auxiliary functions to output stack push/pop instruction.  */
 262
 263 extern const char *nds32_output_stack_push (rtx);
 264 extern const char *nds32_output_stack_pop (rtx);
 265 extern const char *nds32_output_return (void);
 266
 267
 268 /* Auxiliary functions to split/output sms pattern.  */
 269 extern bool nds32_need_split_sms_p (rtx, rtx, rtx, rtx);
 270 extern const char *nds32_output_sms (rtx, rtx, rtx, rtx);
 271 extern void nds32_split_sms (rtx, rtx, rtx, rtx, rtx, rtx, rtx);
 272
 273 /* Auxiliary functions to split double word RTX pattern.  */
 274
 275 extern void nds32_spilt_doubleword (rtx *, bool);
 276 extern void nds32_split_ashiftdi3 (rtx, rtx, rtx);
 277 extern void nds32_split_ashiftrtdi3 (rtx, rtx, rtx);
 278 extern void nds32_split_lshiftrtdi3 (rtx, rtx, rtx);
 279 extern void nds32_split_rotatertdi3 (rtx, rtx, rtx);
 280
 281 /* Auxiliary functions to split large constant RTX pattern.  */
 282
 283 extern void nds32_expand_constant (machine_mode,
 284                                    HOST_WIDE_INT, rtx, rtx);
 285
 286 /* Auxiliary functions to check using return with null epilogue.  */
 287
 288 extern int nds32_can_use_return_insn (void);
 289 extern scalar_int_mode nds32_case_vector_shorten_mode (int, int, rtx);
 290
 291 /* Auxiliary functions to decide output alignment or not.  */
 292
 293 extern int nds32_target_alignment (rtx_insn *);
 294 extern unsigned int nds32_data_alignment (tree, unsigned int);
 295 extern unsigned int nds32_local_alignment (tree, unsigned int);
 296
 297 /* Auxiliary functions to expand builtin functions.  */
 298
 299 extern void nds32_init_builtins_impl (void);
 300 extern rtx nds32_expand_builtin_impl (tree, rtx, rtx,
 301                                       machine_mode, int);
 302 extern tree nds32_builtin_decl_impl (unsigned, bool);
 303
 304 /* Auxiliary functions for ISR implementation.  */
 305
 306 extern void nds32_check_isr_attrs_conflict (tree, tree);
 307 extern void nds32_construct_isr_vectors_information (tree, const char *);
 308 extern void nds32_asm_file_start_for_isr (void);
 309 extern void nds32_asm_file_end_for_isr (void);
 310 extern bool nds32_isr_function_p (tree);
 311 extern bool nds32_isr_function_critical_p (tree);
 312
 313 /* Auxiliary functions for cost calculation.  */
 314
 315 extern void nds32_init_rtx_costs (void);
 316 extern bool nds32_rtx_costs_impl (rtx, machine_mode, int, int, int *, bool);
 317 extern int nds32_address_cost_impl (rtx, machine_mode, addr_space_t, bool);
 318
 319 /* Auxiliary functions for pre-define marco.  */
 320 extern void nds32_cpu_cpp_builtins(struct cpp_reader *);
 321
 322 /* Auxiliary functions for const_vector's constraints.  */
 323
 324 extern HOST_WIDE_INT const_vector_to_hwint (rtx);
 325 extern bool nds32_valid_CVp5_p (rtx);
 326 extern bool nds32_valid_CVs5_p (rtx);
 327 extern bool nds32_valid_CVs2_p (rtx);
 328 extern bool nds32_valid_CVhi_p (rtx);
 329
 330 /* Auxiliary functions for lwm/smw.  */
 331
 332 extern bool nds32_valid_smw_lwm_base_p (rtx);
 333
 334 extern bool nds32_split_double_word_load_store_p (rtx *,bool);
 335
 336 namespace nds32 {
 337
 338 extern rtx extract_pattern_from_insn (rtx);
 339
 340 size_t parallel_elements (rtx);
 341 rtx parallel_element (rtx, int);
 342 bool load_single_p (rtx_insn *);
 343 bool store_single_p (rtx_insn *);
 344 bool load_double_p (rtx_insn *);
 345 bool store_double_p (rtx_insn *);
 346 bool store_offset_reg_p (rtx_insn *);
 347 bool post_update_insn_p (rtx_insn *);
 348 bool immed_offset_p (rtx);
 349 int find_post_update_rtx (rtx_insn *);
 350 rtx extract_mem_rtx (rtx_insn *);
 351 rtx extract_base_reg (rtx_insn *);
 352 rtx extract_offset_rtx (rtx_insn *);
 353
 354 rtx extract_shift_reg (rtx);
 355
 356 bool movd44_insn_p (rtx_insn *);
 357 rtx extract_movd44_odd_reg (rtx_insn *);
 358
 359 rtx extract_mac_non_acc_rtx (rtx_insn *);
 360
 361 bool divmod_p (rtx_insn *);
 362
 363 rtx extract_branch_target_rtx (rtx_insn *);
 364 rtx extract_branch_condition_rtx (rtx_insn *);
 365 } // namespace nds32
 366
 367 extern bool nds32_use_load_post_increment(machine_mode);
 368
 369 /* Functions for create nds32 specific optimization pass.  */
 370 extern rtl_opt_pass *make_pass_nds32_relax_opt (gcc::context *);
 371 extern rtl_opt_pass *make_pass_nds32_fp_as_gp (gcc::context *);
 372
 373 extern int nds32_alloc_relax_group_id ();
 374
 375 /* ------------------------------------------------------------------------ */