gcc/config/loongarch/loongarch-protos.h

   1 /* Prototypes of target machine for GNU compiler.  LoongArch version.
   2    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   3    Contributed by Loongson Ltd.
   4    Based on MIPS target for GNU compiler.
   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 #ifndef GCC_LOONGARCH_PROTOS_H
  23 #define GCC_LOONGARCH_PROTOS_H
  24
  25 /* Classifies a SYMBOL_REF, LABEL_REF or UNSPEC address.
  26
  27    SYMBOL_GOT_DISP
  28        The symbol's value will be loaded directly from the GOT.
  29
  30    SYMBOL_PCREL
  31        The symbol's value will be loaded directly from data section within
  32        +/- 2GiB range.
  33
  34    SYMBOL_PCREL64
  35        The symbol's value will be loaded directly from data section within
  36        +/- 8EiB range.
  37
  38    SYMBOL_TLS
  39        A thread-local symbol.
  40
  41    SYMBOL_TLS_IE
  42    SYMBOL_TLSGD
  43    SYMBOL_TLSLDM
  44        UNSPEC wrappers around SYMBOL_TLS, corresponding to the
  45        thread-local storage relocation operators.
  46    */
  47 enum loongarch_symbol_type {
  48   SYMBOL_GOT_DISP,
  49   SYMBOL_PCREL,
  50   SYMBOL_PCREL64,
  51   SYMBOL_TLS,
  52   SYMBOL_TLS_IE,
  53   SYMBOL_TLS_LE,
  54   SYMBOL_TLSGD,
  55   SYMBOL_TLSLDM,
  56 };
  57 #define NUM_SYMBOL_TYPES (SYMBOL_TLSLDM + 1)
  58
  59 /* Routines implemented in loongarch.cc.  */
  60 extern rtx loongarch_emit_move (rtx, rtx);
  61 extern HOST_WIDE_INT loongarch_initial_elimination_offset (int, int);
  62 extern void loongarch_expand_prologue (void);
  63 extern void loongarch_expand_epilogue (int);
  64 extern bool loongarch_can_use_return_insn (void);
  65 \f
  66 extern bool loongarch_symbolic_constant_p (rtx, enum loongarch_symbol_type *);
  67 extern int loongarch_regno_mode_ok_for_base_p (int, machine_mode, bool);
  68 extern int loongarch_address_insns (rtx, machine_mode, bool);
  69 extern int loongarch_const_insns (rtx);
  70 extern int loongarch_split_const_insns (rtx);
  71 extern int loongarch_split_128bit_const_insns (rtx);
  72 extern int loongarch_load_store_insns (rtx, rtx_insn *);
  73 extern int loongarch_idiv_insns (machine_mode);
  74 #ifdef RTX_CODE
  75 extern void loongarch_emit_binary (enum rtx_code, rtx, rtx, rtx);
  76 #endif
  77 extern rtx loongarch_unspec_address (rtx, enum loongarch_symbol_type);
  78 extern rtx loongarch_strip_unspec_address (rtx);
  79 extern void loongarch_move_integer (rtx, rtx, unsigned HOST_WIDE_INT);
  80 extern bool loongarch_legitimize_move (machine_mode, rtx, rtx);
  81 extern rtx loongarch_legitimize_call_address (rtx);
  82
  83 extern rtx loongarch_subword (rtx, bool);
  84 extern bool loongarch_split_move_p (rtx, rtx);
  85 extern void loongarch_split_move (rtx, rtx);
  86 extern bool loongarch_addu16i_imm12_operand_p (HOST_WIDE_INT, machine_mode);
  87 extern void loongarch_split_plus_constant (rtx *, machine_mode);
  88 extern void loongarch_split_vector_move (rtx, rtx);
  89 extern const char *loongarch_output_move (rtx, rtx);
  90 #ifdef RTX_CODE
  91 extern void loongarch_expand_scc (rtx *);
  92 extern void loongarch_expand_vec_cmp (rtx *);
  93 extern void loongarch_expand_conditional_branch (rtx *);
  94 extern void loongarch_expand_conditional_move (rtx *);
  95 extern void loongarch_expand_conditional_trap (rtx);
  96 #endif
  97 extern void loongarch_set_return_address (rtx, rtx);
  98 extern bool loongarch_move_by_pieces_p (unsigned HOST_WIDE_INT, unsigned int);
  99 extern bool loongarch_expand_block_move (rtx, rtx, rtx, rtx);
 100 extern bool loongarch_do_optimize_block_move_p (void);
 101
 102 extern bool loongarch_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT,
 103                                                     HOST_WIDE_INT, bool);
 104 extern bool loongarch_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT,
 105                                                      HOST_WIDE_INT);
 106 extern HOST_WIDE_INT loongarch_debugger_offset (rtx, HOST_WIDE_INT);
 107
 108 extern void loongarch_output_external (FILE *, tree, const char *);
 109 extern void loongarch_output_ascii (FILE *, const char *, size_t);
 110 extern bool loongarch_small_data_pattern_p (rtx);
 111 extern rtx loongarch_rewrite_small_data (rtx);
 112 extern rtx loongarch_return_addr (int, rtx);
 113
 114 extern bool loongarch_const_vector_same_val_p (rtx, machine_mode);
 115 extern bool loongarch_const_vector_same_bytes_p (rtx, machine_mode);
 116 extern bool loongarch_const_vector_same_int_p (rtx, machine_mode, HOST_WIDE_INT,
 117                                           HOST_WIDE_INT);
 118 extern bool loongarch_const_vector_shuffle_set_p (rtx, machine_mode);
 119 extern bool loongarch_const_vector_bitimm_set_p (rtx, machine_mode);
 120 extern bool loongarch_const_vector_bitimm_clr_p (rtx, machine_mode);
 121 extern rtx loongarch_lsx_vec_parallel_const_half (machine_mode, bool);
 122 extern rtx loongarch_gen_const_int_vector (machine_mode, HOST_WIDE_INT);
 123 extern enum reg_class loongarch_secondary_reload_class (enum reg_class,
 124                                                         machine_mode,
 125                                                         rtx, bool);
 126 extern int loongarch_class_max_nregs (enum reg_class, machine_mode);
 127
 128 extern machine_mode loongarch_hard_regno_caller_save_mode (unsigned int,
 129                                                            unsigned int,
 130                                                            machine_mode);
 131 extern const char *loongarch_output_conditional_branch (rtx_insn *, rtx *,
 132                                                         const char *,
 133                                                         const char *);
 134 extern const char *loongarch_output_order_conditional_branch (rtx_insn *,
 135                                                               rtx *,
 136                                                               bool);
 137 extern const char *loongarch_output_equal_conditional_branch (rtx_insn *,
 138                                                               rtx *,
 139                                                               bool);
 140 extern const char *loongarch_output_division (const char *, rtx *);
 141 extern const char *loongarch_lsx_output_division (const char *, rtx *);
 142 extern const char *loongarch_output_probe_stack_range (rtx, rtx, rtx);
 143 extern bool loongarch_hard_regno_rename_ok (unsigned int, unsigned int);
 144 extern int loongarch_dspalu_bypass_p (rtx, rtx);
 145 extern rtx loongarch_prefetch_cookie (rtx, rtx);
 146
 147 extern bool loongarch_global_symbol_p (const_rtx);
 148 extern bool loongarch_global_symbol_noweak_p (const_rtx);
 149 extern bool loongarch_weak_symbol_p (const_rtx);
 150 extern bool loongarch_symbol_binds_local_p (const_rtx);
 151
 152 extern unsigned int current_section_flags (void);
 153 extern bool loongarch_use_ins_ext_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
 154 extern bool loongarch_check_zero_div_p (void);
 155 extern bool loongarch_pre_reload_split (void);
 156 extern int loongarch_use_bstrins_for_ior_with_mask (machine_mode, rtx *);
 157 extern rtx loongarch_rewrite_mem_for_simple_ldst (rtx);
 158
 159 union loongarch_gen_fn_ptrs
 160 {
 161   rtx (*fn_8) (rtx, rtx, rtx, rtx, rtx, rtx, rtx, rtx);
 162   rtx (*fn_7) (rtx, rtx, rtx, rtx, rtx, rtx, rtx);
 163   rtx (*fn_6) (rtx, rtx, rtx, rtx, rtx, rtx);
 164   rtx (*fn_5) (rtx, rtx, rtx, rtx, rtx);
 165   rtx (*fn_4) (rtx, rtx, rtx, rtx);
 166 };
 167
 168 extern void loongarch_expand_atomic_qihi (union loongarch_gen_fn_ptrs,
 169                                           rtx, rtx, rtx, rtx, rtx);
 170
 171 extern void loongarch_expand_vector_group_init (rtx, rtx);
 172 extern void loongarch_expand_vector_init (rtx, rtx);
 173 extern void loongarch_expand_vec_unpack (rtx op[2], bool, bool);
 174 extern void loongarch_expand_vec_perm (rtx, rtx, rtx, rtx);
 175 extern void loongarch_expand_vec_perm_1 (rtx[]);
 176 extern void loongarch_expand_vector_extract (rtx, rtx, int);
 177 extern void loongarch_expand_vector_reduc (rtx (*)(rtx, rtx, rtx), rtx, rtx);
 178
 179 extern int loongarch_ldst_scaled_shift (machine_mode);
 180 extern bool loongarch_signed_immediate_p (unsigned HOST_WIDE_INT, int, int);
 181 extern bool loongarch_unsigned_immediate_p (unsigned HOST_WIDE_INT, int, int);
 182 extern bool loongarch_12bit_offset_address_p (rtx, machine_mode);
 183 extern bool loongarch_14bit_shifted_offset_address_p (rtx, machine_mode);
 184 extern bool loongarch_base_index_address_p (rtx, machine_mode);
 185 extern rtx loongarch_expand_thread_pointer (rtx);
 186
 187 extern bool loongarch_eh_uses (unsigned int);
 188 extern bool loongarch_epilogue_uses (unsigned int);
 189 extern bool loongarch_load_store_bonding_p (rtx *, machine_mode, bool);
 190 extern bool loongarch_split_symbol_type (enum loongarch_symbol_type);
 191
 192 extern void loongarch_register_frame_header_opt (void);
 193 extern void loongarch_expand_vec_cond_expr (machine_mode, machine_mode, rtx *);
 194 extern void loongarch_expand_vec_cond_mask_expr (machine_mode, machine_mode,
 195                                                  rtx *);
 196 extern void loongarch_expand_vec_widen_hilo (rtx, rtx, rtx, bool, bool, const char *);
 197
 198 /* Routines implemented in loongarch-c.c.  */
 199 void loongarch_cpu_cpp_builtins (cpp_reader *);
 200
 201 extern void loongarch_init_builtins (void);
 202 extern void loongarch_atomic_assign_expand_fenv (tree *, tree *, tree *);
 203 extern tree loongarch_builtin_decl (unsigned int, bool);
 204 extern rtx loongarch_expand_builtin (tree, rtx, rtx subtarget ATTRIBUTE_UNUSED,
 205                                      machine_mode, int);
 206 extern tree loongarch_builtin_vectorized_function (unsigned int, tree, tree);
 207 extern rtx loongarch_gen_const_int_vector_shuffle (machine_mode, int);
 208 extern tree loongarch_build_builtin_va_list (void);
 209
 210 extern rtx loongarch_build_signbit_mask (machine_mode, bool, bool);
 211 extern void loongarch_emit_swrsqrtsf (rtx, rtx, machine_mode, bool);
 212 extern void loongarch_emit_swdivsf (rtx, rtx, rtx, machine_mode);
 213 extern bool loongarch_explicit_relocs_p (enum loongarch_symbol_type);
 214 extern bool loongarch_symbol_extreme_p (enum loongarch_symbol_type);
 215 #endif /* ! GCC_LOONGARCH_PROTOS_H */