gcc/config/arm/arm-protos.h

   1 /* Prototypes for exported functions defined in arm.c and pe.c
   2    Copyright (C) 1999-2013 Free Software Foundation, Inc.
   3    Contributed by Richard Earnshaw (rearnsha@arm.com)
   4    Minor hacks by Nick Clifton (nickc@cygnus.com)
   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_ARM_PROTOS_H
  23 #define GCC_ARM_PROTOS_H
  24
  25 extern enum unwind_info_type arm_except_unwind_info (struct gcc_options *);
  26 extern int use_return_insn (int, rtx);
  27 extern enum reg_class arm_regno_class (int);
  28 extern void arm_load_pic_register (unsigned long);
  29 extern int arm_volatile_func (void);
  30 extern void arm_expand_prologue (void);
  31 extern void arm_expand_epilogue (bool);
  32 extern void thumb2_expand_return (void);
  33 extern const char *arm_strip_name_encoding (const char *);
  34 extern void arm_asm_output_labelref (FILE *, const char *);
  35 extern void thumb2_asm_output_opcode (FILE *);
  36 extern unsigned long arm_current_func_type (void);
  37 extern HOST_WIDE_INT arm_compute_initial_elimination_offset (unsigned int,
  38                                                              unsigned int);
  39 extern HOST_WIDE_INT thumb_compute_initial_elimination_offset (unsigned int,
  40                                                                unsigned int);
  41 extern unsigned int arm_dbx_register_number (unsigned int);
  42 extern void arm_output_fn_unwind (FILE *, bool);
  43
  44
  45 #ifdef RTX_CODE
  46 extern bool arm_vector_mode_supported_p (enum machine_mode);
  47 extern bool arm_small_register_classes_for_mode_p (enum machine_mode);
  48 extern int arm_hard_regno_mode_ok (unsigned int, enum machine_mode);
  49 extern bool arm_modes_tieable_p (enum machine_mode, enum machine_mode);
  50 extern int const_ok_for_arm (HOST_WIDE_INT);
  51 extern int const_ok_for_op (HOST_WIDE_INT, enum rtx_code);
  52 extern int const_ok_for_dimode_op (HOST_WIDE_INT, enum rtx_code);
  53 extern int arm_split_constant (RTX_CODE, enum machine_mode, rtx,
  54                                HOST_WIDE_INT, rtx, rtx, int);
  55 extern int legitimate_pic_operand_p (rtx);
  56 extern rtx legitimize_pic_address (rtx, enum machine_mode, rtx);
  57 extern rtx legitimize_tls_address (rtx, rtx);
  58 extern int arm_legitimate_address_outer_p (enum machine_mode, rtx, RTX_CODE, int);
  59 extern int thumb_legitimate_offset_p (enum machine_mode, HOST_WIDE_INT);
  60 extern bool arm_legitimize_reload_address (rtx *, enum machine_mode, int, int,
  61                                            int);
  62 extern rtx thumb_legitimize_reload_address (rtx *, enum machine_mode, int, int,
  63                                             int);
  64 extern int thumb1_legitimate_address_p (enum machine_mode, rtx, int);
  65 extern bool ldm_stm_operation_p (rtx, bool, enum machine_mode mode,
  66                                  bool, bool);
  67 extern int arm_const_double_rtx (rtx);
  68 extern int vfp3_const_double_rtx (rtx);
  69 extern int neon_immediate_valid_for_move (rtx, enum machine_mode, rtx *, int *);
  70 extern int neon_immediate_valid_for_logic (rtx, enum machine_mode, int, rtx *,
  71                                            int *);
  72 extern int neon_immediate_valid_for_shift (rtx, enum machine_mode, rtx *,
  73                                            int *, bool);
  74 extern char *neon_output_logic_immediate (const char *, rtx *,
  75                                           enum machine_mode, int, int);
  76 extern char *neon_output_shift_immediate (const char *, char, rtx *,
  77                                           enum machine_mode, int, bool);
  78 extern void neon_pairwise_reduce (rtx, rtx, enum machine_mode,
  79                                   rtx (*) (rtx, rtx, rtx));
  80 extern rtx neon_make_constant (rtx);
  81 extern void neon_expand_vector_init (rtx, rtx);
  82 extern void neon_lane_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
  83 extern void neon_const_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
  84 extern HOST_WIDE_INT neon_element_bits (enum machine_mode);
  85 extern void neon_reinterpret (rtx, rtx);
  86 extern void neon_emit_pair_result_insn (enum machine_mode,
  87                                         rtx (*) (rtx, rtx, rtx, rtx),
  88                                         rtx, rtx, rtx);
  89 extern void neon_disambiguate_copy (rtx *, rtx *, rtx *, unsigned int);
  90 extern void neon_split_vcombine (rtx op[3]);
  91 extern enum reg_class coproc_secondary_reload_class (enum machine_mode, rtx,
  92                                                      bool);
  93 extern bool arm_tls_referenced_p (rtx);
  94
  95 extern int arm_coproc_mem_operand (rtx, bool);
  96 extern int neon_vector_mem_operand (rtx, int);
  97 extern int neon_struct_mem_operand (rtx);
  98 extern int arm_no_early_store_addr_dep (rtx, rtx);
  99 extern int arm_early_store_addr_dep (rtx, rtx);
 100 extern int arm_early_load_addr_dep (rtx, rtx);
 101 extern int arm_no_early_alu_shift_dep (rtx, rtx);
 102 extern int arm_no_early_alu_shift_value_dep (rtx, rtx);
 103 extern int arm_no_early_mul_dep (rtx, rtx);
 104 extern int arm_mac_accumulator_is_result (rtx, rtx);
 105 extern int arm_mac_accumulator_is_mul_result (rtx, rtx);
 106
 107 extern int tls_mentioned_p (rtx);
 108 extern int symbol_mentioned_p (rtx);
 109 extern int label_mentioned_p (rtx);
 110 extern RTX_CODE minmax_code (rtx);
 111 extern bool arm_sat_operator_match (rtx, rtx, int *, bool *);
 112 extern int adjacent_mem_locations (rtx, rtx);
 113 extern bool gen_ldm_seq (rtx *, int, bool);
 114 extern bool gen_stm_seq (rtx *, int);
 115 extern bool gen_const_stm_seq (rtx *, int);
 116 extern rtx arm_gen_load_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 117 extern rtx arm_gen_store_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 118 extern bool offset_ok_for_ldrd_strd (HOST_WIDE_INT);
 119 extern bool operands_ok_ldrd_strd (rtx, rtx, rtx, HOST_WIDE_INT, bool, bool);
 120 extern int arm_gen_movmemqi (rtx *);
 121 extern enum machine_mode arm_select_cc_mode (RTX_CODE, rtx, rtx);
 122 extern enum machine_mode arm_select_dominance_cc_mode (rtx, rtx,
 123                                                        HOST_WIDE_INT);
 124 extern rtx arm_gen_compare_reg (RTX_CODE, rtx, rtx, rtx);
 125 extern rtx arm_gen_return_addr_mask (void);
 126 extern void arm_reload_in_hi (rtx *);
 127 extern void arm_reload_out_hi (rtx *);
 128 extern int arm_const_double_inline_cost (rtx);
 129 extern bool arm_const_double_by_parts (rtx);
 130 extern bool arm_const_double_by_immediates (rtx);
 131 extern const char *fp_immediate_constant (rtx);
 132 extern void arm_emit_call_insn (rtx, rtx);
 133 extern const char *output_call (rtx *);
 134 extern const char *output_call_mem (rtx *);
 135 void arm_emit_movpair (rtx, rtx);
 136 extern const char *output_mov_long_double_arm_from_arm (rtx *);
 137 extern const char *output_move_double (rtx *, bool, int *count);
 138 extern const char *output_move_quad (rtx *);
 139 extern int arm_count_output_move_double_insns (rtx *);
 140 extern const char *output_move_vfp (rtx *operands);
 141 extern const char *output_move_neon (rtx *operands);
 142 extern int arm_attr_length_move_neon (rtx);
 143 extern int arm_address_offset_is_imm (rtx);
 144 extern const char *output_add_immediate (rtx *);
 145 extern const char *arithmetic_instr (rtx, int);
 146 extern void output_ascii_pseudo_op (FILE *, const unsigned char *, int);
 147 extern const char *output_return_instruction (rtx, bool, bool, bool);
 148 extern void arm_poke_function_name (FILE *, const char *);
 149 extern void arm_final_prescan_insn (rtx);
 150 extern int arm_debugger_arg_offset (int, rtx);
 151 extern bool arm_is_long_call_p (tree);
 152 extern int    arm_emit_vector_const (FILE *, rtx);
 153 extern void arm_emit_fp16_const (rtx c);
 154 extern const char * arm_output_load_gr (rtx *);
 155 extern const char *vfp_output_fstmd (rtx *);
 156 extern void arm_output_multireg_pop (rtx *, bool, rtx, bool, bool);
 157 extern void arm_set_return_address (rtx, rtx);
 158 extern int arm_eliminable_register (rtx);
 159 extern const char *arm_output_shift(rtx *, int);
 160 extern const char *arm_output_iwmmxt_shift_immediate (const char *, rtx *, bool);
 161 extern const char *arm_output_iwmmxt_tinsr (rtx *);
 162 extern unsigned int arm_sync_loop_insns (rtx , rtx *);
 163 extern int arm_attr_length_push_multi(rtx, rtx);
 164 extern void arm_expand_compare_and_swap (rtx op[]);
 165 extern void arm_split_compare_and_swap (rtx op[]);
 166 extern void arm_split_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx, rtx);
 167 extern rtx arm_load_tp (rtx);
 168
 169 #if defined TREE_CODE
 170 extern void arm_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree);
 171 extern bool arm_pad_arg_upward (enum machine_mode, const_tree);
 172 extern bool arm_pad_reg_upward (enum machine_mode, tree, int);
 173 #endif
 174 extern int arm_apply_result_size (void);
 175
 176 #endif /* RTX_CODE */
 177
 178 /* Thumb functions.  */
 179 extern void arm_init_expanders (void);
 180 extern const char *thumb1_unexpanded_epilogue (void);
 181 extern void thumb1_expand_prologue (void);
 182 extern void thumb1_expand_epilogue (void);
 183 extern const char *thumb1_output_interwork (void);
 184 #ifdef TREE_CODE
 185 extern int is_called_in_ARM_mode (tree);
 186 #endif
 187 extern int thumb_shiftable_const (unsigned HOST_WIDE_INT);
 188 #ifdef RTX_CODE
 189 extern enum arm_cond_code maybe_get_arm_condition_code (rtx);
 190 extern void thumb1_final_prescan_insn (rtx);
 191 extern void thumb2_final_prescan_insn (rtx);
 192 extern const char *thumb_load_double_from_address (rtx *);
 193 extern const char *thumb_output_move_mem_multiple (int, rtx *);
 194 extern const char *thumb_call_via_reg (rtx);
 195 extern void thumb_expand_movmemqi (rtx *);
 196 extern rtx arm_return_addr (int, rtx);
 197 extern void thumb_reload_out_hi (rtx *);
 198 extern void thumb_reload_in_hi (rtx *);
 199 extern void thumb_set_return_address (rtx, rtx);
 200 extern const char *thumb1_output_casesi (rtx *);
 201 extern const char *thumb2_output_casesi (rtx *);
 202 #endif
 203
 204 /* Defined in pe.c.  */
 205 extern int arm_dllexport_name_p (const char *);
 206 extern int arm_dllimport_name_p (const char *);
 207
 208 #ifdef TREE_CODE
 209 extern void arm_pe_unique_section (tree, int);
 210 extern void arm_pe_encode_section_info (tree, rtx, int);
 211 extern int arm_dllexport_p (tree);
 212 extern int arm_dllimport_p (tree);
 213 extern void arm_mark_dllexport (tree);
 214 extern void arm_mark_dllimport (tree);
 215 #endif
 216
 217 extern void arm_pr_long_calls (struct cpp_reader *);
 218 extern void arm_pr_no_long_calls (struct cpp_reader *);
 219 extern void arm_pr_long_calls_off (struct cpp_reader *);
 220
 221 extern void arm_lang_object_attributes_init(void);
 222
 223 extern const char *arm_mangle_type (const_tree);
 224
 225 extern void arm_order_regs_for_local_alloc (void);
 226
 227 /* Vectorizer cost model implementation.  */
 228 struct cpu_vec_costs {
 229   const int scalar_stmt_cost;   /* Cost of any scalar operation, excluding
 230                                    load and store.  */
 231   const int scalar_load_cost;   /* Cost of scalar load.  */
 232   const int scalar_store_cost;  /* Cost of scalar store.  */
 233   const int vec_stmt_cost;      /* Cost of any vector operation, excluding
 234                                    load, store, vector-to-scalar and
 235                                    scalar-to-vector operation.  */
 236   const int vec_to_scalar_cost;    /* Cost of vect-to-scalar operation.  */
 237   const int scalar_to_vec_cost;    /* Cost of scalar-to-vector operation.  */
 238   const int vec_align_load_cost;   /* Cost of aligned vector load.  */
 239   const int vec_unalign_load_cost; /* Cost of unaligned vector load.  */
 240   const int vec_unalign_store_cost; /* Cost of unaligned vector load.  */
 241   const int vec_store_cost;        /* Cost of vector store.  */
 242   const int cond_taken_branch_cost;    /* Cost of taken branch for vectorizer
 243                                           cost model.  */
 244   const int cond_not_taken_branch_cost;/* Cost of not taken branch for
 245                                           vectorizer cost model.  */
 246 };
 247
 248 #ifdef RTX_CODE
 249 /* This needs to be here because we need RTX_CODE and similar.  */
 250
 251 struct tune_params
 252 {
 253   bool (*rtx_costs) (rtx, RTX_CODE, RTX_CODE, int *, bool);
 254   bool (*sched_adjust_cost) (rtx, rtx, rtx, int *);
 255   int constant_limit;
 256   /* Maximum number of instructions to conditionalise in
 257      arm_final_prescan_insn.  */
 258   int max_insns_skipped;
 259   int num_prefetch_slots;
 260   int l1_cache_size;
 261   int l1_cache_line_size;
 262   bool prefer_constant_pool;
 263   int (*branch_cost) (bool, bool);
 264   /* Prefer STRD/LDRD instructions over PUSH/POP/LDM/STM.  */
 265   bool prefer_ldrd_strd;
 266   /* The preference for non short cirtcuit operation when optimizing for
 267      performance. The first element covers Thumb state and the second one
 268      is for ARM state.  */
 269   bool logical_op_non_short_circuit[2];
 270   /* Vectorizer costs.  */
 271   const struct cpu_vec_costs* vec_costs;
 272 };
 273
 274 extern const struct tune_params *current_tune;
 275 extern int vfp3_const_double_for_fract_bits (rtx);
 276
 277 extern void arm_emit_coreregs_64bit_shift (enum rtx_code, rtx, rtx, rtx, rtx,
 278                                            rtx);
 279 extern bool arm_validize_comparison (rtx *, rtx *, rtx *);
 280 #endif /* RTX_CODE */
 281
 282 extern void arm_expand_vec_perm (rtx target, rtx op0, rtx op1, rtx sel);
 283 extern bool arm_expand_vec_perm_const (rtx target, rtx op0, rtx op1, rtx sel);
 284
 285 extern bool arm_autoinc_modes_ok_p (enum machine_mode, enum arm_auto_incmodes);
 286
 287 extern void arm_emit_eabi_attribute (const char *, int, int);
 288
 289 #endif /* ! GCC_ARM_PROTOS_H */