gcc/config/loongarch/loongarch-protos.h

   1 /* Prototypes of target machine for GNU compiler.  LoongArch version.
   2    Copyright (C) 2021-2022 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_TLS
  31        A thread-local symbol.
  32
  33    SYMBOL_TLSGD
  34    SYMBOL_TLSLDM
  35        UNSPEC wrappers around SYMBOL_TLS, corresponding to the
  36        thread-local storage relocation operators.
  37    */
  38 enum loongarch_symbol_type {
  39   SYMBOL_GOT_DISP,
  40   SYMBOL_TLS,
  41   SYMBOL_TLSGD,
  42   SYMBOL_TLSLDM,
  43 };
  44 #define NUM_SYMBOL_TYPES (SYMBOL_TLSLDM + 1)
  45
  46 /* Routines implemented in loongarch.c.  */
  47 extern rtx loongarch_emit_move (rtx, rtx);
  48 extern HOST_WIDE_INT loongarch_initial_elimination_offset (int, int);
  49 extern void loongarch_expand_prologue (void);
  50 extern void loongarch_expand_epilogue (bool);
  51 extern bool loongarch_can_use_return_insn (void);
  52 \f
  53 extern bool loongarch_symbolic_constant_p (rtx, enum loongarch_symbol_type *);
  54 extern int loongarch_regno_mode_ok_for_base_p (int, machine_mode, bool);
  55 extern int loongarch_address_insns (rtx, machine_mode, bool);
  56 extern int loongarch_const_insns (rtx);
  57 extern int loongarch_split_const_insns (rtx);
  58 extern int loongarch_split_128bit_const_insns (rtx);
  59 extern int loongarch_load_store_insns (rtx, rtx_insn *);
  60 extern int loongarch_idiv_insns (machine_mode);
  61 #ifdef RTX_CODE
  62 extern void loongarch_emit_binary (enum rtx_code, rtx, rtx, rtx);
  63 #endif
  64 extern bool loongarch_split_symbol (rtx, rtx, machine_mode, rtx *);
  65 extern rtx loongarch_unspec_address (rtx, enum loongarch_symbol_type);
  66 extern rtx loongarch_strip_unspec_address (rtx);
  67 extern void loongarch_move_integer (rtx, rtx, unsigned HOST_WIDE_INT);
  68 extern bool loongarch_legitimize_move (machine_mode, rtx, rtx);
  69 extern rtx loongarch_legitimize_call_address (rtx);
  70
  71 extern rtx loongarch_subword (rtx, bool);
  72 extern bool loongarch_split_move_p (rtx, rtx);
  73 extern void loongarch_split_move (rtx, rtx, rtx);
  74 extern bool loongarch_split_move_insn_p (rtx, rtx);
  75 extern void loongarch_split_move_insn (rtx, rtx, rtx);
  76 extern const char *loongarch_output_move (rtx, rtx);
  77 extern bool loongarch_cfun_has_cprestore_slot_p (void);
  78 #ifdef RTX_CODE
  79 extern void loongarch_expand_scc (rtx *);
  80 extern void loongarch_expand_conditional_branch (rtx *);
  81 extern void loongarch_expand_conditional_move (rtx *);
  82 extern void loongarch_expand_conditional_trap (rtx);
  83 #endif
  84 extern void loongarch_set_return_address (rtx, rtx);
  85 extern bool loongarch_move_by_pieces_p (unsigned HOST_WIDE_INT, unsigned int);
  86 extern bool loongarch_expand_block_move (rtx, rtx, rtx);
  87 extern bool loongarch_do_optimize_block_move_p (void);
  88
  89 extern bool loongarch_expand_ext_as_unaligned_load (rtx, rtx, HOST_WIDE_INT,
  90                                                     HOST_WIDE_INT, bool);
  91 extern bool loongarch_expand_ins_as_unaligned_store (rtx, rtx, HOST_WIDE_INT,
  92                                                      HOST_WIDE_INT);
  93 extern HOST_WIDE_INT loongarch_debugger_offset (rtx, HOST_WIDE_INT);
  94
  95 extern void loongarch_output_external (FILE *, tree, const char *);
  96 extern void loongarch_output_ascii (FILE *, const char *, size_t);
  97 extern bool loongarch_small_data_pattern_p (rtx);
  98 extern rtx loongarch_rewrite_small_data (rtx);
  99 extern rtx loongarch_return_addr (int, rtx);
 100
 101 extern enum reg_class loongarch_secondary_reload_class (enum reg_class,
 102                                                         machine_mode,
 103                                                         rtx, bool);
 104 extern int loongarch_class_max_nregs (enum reg_class, machine_mode);
 105
 106 extern machine_mode loongarch_hard_regno_caller_save_mode (unsigned int,
 107                                                            unsigned int,
 108                                                            machine_mode);
 109 extern int loongarch_adjust_insn_length (rtx_insn *, int);
 110 extern const char *loongarch_output_conditional_branch (rtx_insn *, rtx *,
 111                                                         const char *,
 112                                                         const char *);
 113 extern const char *loongarch_output_order_conditional_branch (rtx_insn *,
 114                                                               rtx *,
 115                                                               bool);
 116 extern const char *loongarch_output_equal_conditional_branch (rtx_insn *,
 117                                                               rtx *,
 118                                                               bool);
 119 extern const char *loongarch_output_division (const char *, rtx *);
 120 extern const char *loongarch_output_probe_stack_range (rtx, rtx, rtx);
 121 extern bool loongarch_hard_regno_rename_ok (unsigned int, unsigned int);
 122 extern int loongarch_dspalu_bypass_p (rtx, rtx);
 123 extern rtx loongarch_prefetch_cookie (rtx, rtx);
 124
 125 extern bool loongarch_global_symbol_p (const_rtx);
 126 extern bool loongarch_global_symbol_noweak_p (const_rtx);
 127 extern bool loongarch_weak_symbol_p (const_rtx);
 128 extern bool loongarch_symbol_binds_local_p (const_rtx);
 129
 130 extern const char *current_section_name (void);
 131 extern unsigned int current_section_flags (void);
 132 extern bool loongarch_use_ins_ext_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
 133
 134 union loongarch_gen_fn_ptrs
 135 {
 136   rtx (*fn_8) (rtx, rtx, rtx, rtx, rtx, rtx, rtx, rtx);
 137   rtx (*fn_7) (rtx, rtx, rtx, rtx, rtx, rtx, rtx);
 138   rtx (*fn_6) (rtx, rtx, rtx, rtx, rtx, rtx);
 139   rtx (*fn_5) (rtx, rtx, rtx, rtx, rtx);
 140   rtx (*fn_4) (rtx, rtx, rtx, rtx);
 141 };
 142
 143 extern void loongarch_expand_atomic_qihi (union loongarch_gen_fn_ptrs,
 144                                           rtx, rtx, rtx, rtx, rtx);
 145
 146 extern bool loongarch_signed_immediate_p (unsigned HOST_WIDE_INT, int, int);
 147 extern bool loongarch_unsigned_immediate_p (unsigned HOST_WIDE_INT, int, int);
 148 extern bool loongarch_12bit_offset_address_p (rtx, machine_mode);
 149 extern bool loongarch_14bit_shifted_offset_address_p (rtx, machine_mode);
 150 extern bool loongarch_base_index_address_p (rtx, machine_mode);
 151 extern rtx loongarch_expand_thread_pointer (rtx);
 152
 153 extern bool loongarch_eh_uses (unsigned int);
 154 extern bool loongarch_epilogue_uses (unsigned int);
 155 extern bool loongarch_load_store_bonding_p (rtx *, machine_mode, bool);
 156 extern bool loongarch_split_symbol_type (enum loongarch_symbol_type);
 157
 158 typedef rtx (*mulsidi3_gen_fn) (rtx, rtx, rtx);
 159
 160 extern void loongarch_register_frame_header_opt (void);
 161
 162 /* Routines implemented in loongarch-c.c.  */
 163 void loongarch_cpu_cpp_builtins (cpp_reader *);
 164
 165 extern void loongarch_init_builtins (void);
 166 extern void loongarch_atomic_assign_expand_fenv (tree *, tree *, tree *);
 167 extern tree loongarch_builtin_decl (unsigned int, bool);
 168 extern rtx loongarch_expand_builtin (tree, rtx, rtx subtarget ATTRIBUTE_UNUSED,
 169                                      machine_mode, int);
 170 extern tree loongarch_build_builtin_va_list (void);
 171
 172 #endif /* ! GCC_LOONGARCH_PROTOS_H */