gcc/config/arm/arm-protos.h

   1 /* Prototypes for exported functions defined in arm.c and pe.c
   2    Copyright (C) 1999-2014 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 bool use_simple_return_p (void);
  28 extern enum reg_class arm_regno_class (int);
  29 extern void arm_load_pic_register (unsigned long);
  30 extern int arm_volatile_func (void);
  31 extern void arm_expand_prologue (void);
  32 extern void arm_expand_epilogue (bool);
  33 extern void thumb2_expand_return (bool);
  34 extern const char *arm_strip_name_encoding (const char *);
  35 extern void arm_asm_output_labelref (FILE *, const char *);
  36 extern void thumb2_asm_output_opcode (FILE *);
  37 extern unsigned long arm_current_func_type (void);
  38 extern HOST_WIDE_INT arm_compute_initial_elimination_offset (unsigned int,
  39                                                              unsigned int);
  40 extern HOST_WIDE_INT thumb_compute_initial_elimination_offset (unsigned int,
  41                                                                unsigned int);
  42 extern unsigned int arm_dbx_register_number (unsigned int);
  43 extern void arm_output_fn_unwind (FILE *, bool);
  44
  45
  46 #ifdef RTX_CODE
  47 extern bool arm_vector_mode_supported_p (enum machine_mode);
  48 extern bool arm_small_register_classes_for_mode_p (enum machine_mode);
  49 extern int arm_hard_regno_mode_ok (unsigned int, enum machine_mode);
  50 extern bool arm_modes_tieable_p (enum machine_mode, enum machine_mode);
  51 extern int const_ok_for_arm (HOST_WIDE_INT);
  52 extern int const_ok_for_op (HOST_WIDE_INT, enum rtx_code);
  53 extern int const_ok_for_dimode_op (HOST_WIDE_INT, enum rtx_code);
  54 extern int arm_split_constant (RTX_CODE, enum machine_mode, rtx,
  55                                HOST_WIDE_INT, rtx, rtx, int);
  56 extern int legitimate_pic_operand_p (rtx);
  57 extern rtx legitimize_pic_address (rtx, enum machine_mode, rtx);
  58 extern rtx legitimize_tls_address (rtx, rtx);
  59 extern bool arm_legitimate_address_p (enum machine_mode, rtx, bool);
  60 extern int arm_legitimate_address_outer_p (enum machine_mode, rtx, RTX_CODE, int);
  61 extern int thumb_legitimate_offset_p (enum machine_mode, HOST_WIDE_INT);
  62 extern bool arm_legitimize_reload_address (rtx *, enum machine_mode, int, int,
  63                                            int);
  64 extern rtx thumb_legitimize_reload_address (rtx *, enum machine_mode, int, int,
  65                                             int);
  66 extern int thumb1_legitimate_address_p (enum machine_mode, rtx, int);
  67 extern bool ldm_stm_operation_p (rtx, bool, enum machine_mode mode,
  68                                  bool, bool);
  69 extern int arm_const_double_rtx (rtx);
  70 extern int vfp3_const_double_rtx (rtx);
  71 extern int neon_immediate_valid_for_move (rtx, enum machine_mode, rtx *, int *);
  72 extern int neon_immediate_valid_for_logic (rtx, enum machine_mode, int, rtx *,
  73                                            int *);
  74 extern int neon_immediate_valid_for_shift (rtx, enum machine_mode, rtx *,
  75                                            int *, bool);
  76 extern char *neon_output_logic_immediate (const char *, rtx *,
  77                                           enum machine_mode, int, int);
  78 extern char *neon_output_shift_immediate (const char *, char, rtx *,
  79                                           enum machine_mode, int, bool);
  80 extern void neon_pairwise_reduce (rtx, rtx, enum machine_mode,
  81                                   rtx (*) (rtx, rtx, rtx));
  82 extern rtx neon_make_constant (rtx);
  83 extern tree arm_builtin_vectorized_function (tree, tree, tree);
  84 extern void neon_expand_vector_init (rtx, rtx);
  85 extern void neon_lane_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
  86 extern void neon_const_bounds (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
  87 extern HOST_WIDE_INT neon_element_bits (enum machine_mode);
  88 extern void neon_reinterpret (rtx, rtx);
  89 extern void neon_emit_pair_result_insn (enum machine_mode,
  90                                         rtx (*) (rtx, rtx, rtx, rtx),
  91                                         rtx, rtx, rtx);
  92 extern void neon_disambiguate_copy (rtx *, rtx *, rtx *, unsigned int);
  93 extern void neon_split_vcombine (rtx op[3]);
  94 extern enum reg_class coproc_secondary_reload_class (enum machine_mode, rtx,
  95                                                      bool);
  96 extern bool arm_tls_referenced_p (rtx);
  97
  98 extern int arm_coproc_mem_operand (rtx, bool);
  99 extern int neon_vector_mem_operand (rtx, int, bool);
 100 extern int neon_struct_mem_operand (rtx);
 101
 102 extern int tls_mentioned_p (rtx);
 103 extern int symbol_mentioned_p (rtx);
 104 extern int label_mentioned_p (rtx);
 105 extern RTX_CODE minmax_code (rtx);
 106 extern bool arm_sat_operator_match (rtx, rtx, int *, bool *);
 107 extern int adjacent_mem_locations (rtx, rtx);
 108 extern bool gen_ldm_seq (rtx *, int, bool);
 109 extern bool gen_stm_seq (rtx *, int);
 110 extern bool gen_const_stm_seq (rtx *, int);
 111 extern rtx arm_gen_load_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 112 extern rtx arm_gen_store_multiple (int *, int, rtx, int, rtx, HOST_WIDE_INT *);
 113 extern bool offset_ok_for_ldrd_strd (HOST_WIDE_INT);
 114 extern bool operands_ok_ldrd_strd (rtx, rtx, rtx, HOST_WIDE_INT, bool, bool);
 115 extern bool gen_operands_ldrd_strd (rtx *, bool, bool, bool);
 116 extern int arm_gen_movmemqi (rtx *);
 117 extern bool gen_movmem_ldrd_strd (rtx *);
 118 extern enum machine_mode arm_select_cc_mode (RTX_CODE, rtx, rtx);
 119 extern enum machine_mode arm_select_dominance_cc_mode (rtx, rtx,
 120                                                        HOST_WIDE_INT);
 121 extern rtx arm_gen_compare_reg (RTX_CODE, rtx, rtx, rtx);
 122 extern rtx arm_gen_return_addr_mask (void);
 123 extern void arm_reload_in_hi (rtx *);
 124 extern void arm_reload_out_hi (rtx *);
 125 extern int arm_max_const_double_inline_cost (void);
 126 extern int arm_const_double_inline_cost (rtx);
 127 extern bool arm_const_double_by_parts (rtx);
 128 extern bool arm_const_double_by_immediates (rtx);
 129 extern void arm_emit_call_insn (rtx, rtx, bool);
 130 extern const char *output_call (rtx *);
 131 extern const char *output_call_mem (rtx *);
 132 void arm_emit_movpair (rtx, rtx);
 133 extern const char *output_mov_long_double_arm_from_arm (rtx *);
 134 extern const char *output_move_double (rtx *, bool, int *count);
 135 extern const char *output_move_quad (rtx *);
 136 extern int arm_count_output_move_double_insns (rtx *);
 137 extern const char *output_move_vfp (rtx *operands);
 138 extern const char *output_move_neon (rtx *operands);
 139 extern int arm_attr_length_move_neon (rtx_insn *);
 140 extern int arm_address_offset_is_imm (rtx_insn *);
 141 extern const char *output_add_immediate (rtx *);
 142 extern const char *arithmetic_instr (rtx, int);
 143 extern void output_ascii_pseudo_op (FILE *, const unsigned char *, int);
 144 extern const char *output_return_instruction (rtx, bool, bool, bool);
 145 extern void arm_poke_function_name (FILE *, const char *);
 146 extern void arm_final_prescan_insn (rtx_insn *);
 147 extern int arm_debugger_arg_offset (int, rtx);
 148 extern bool arm_is_long_call_p (tree);
 149 extern int    arm_emit_vector_const (FILE *, rtx);
 150 extern void arm_emit_fp16_const (rtx c);
 151 extern const char * arm_output_load_gr (rtx *);
 152 extern const char *vfp_output_vstmd (rtx *);
 153 extern void arm_output_multireg_pop (rtx *, bool, rtx, bool, bool);
 154 extern void arm_set_return_address (rtx, rtx);
 155 extern int arm_eliminable_register (rtx);
 156 extern const char *arm_output_shift(rtx *, int);
 157 extern const char *arm_output_iwmmxt_shift_immediate (const char *, rtx *, bool);
 158 extern const char *arm_output_iwmmxt_tinsr (rtx *);
 159 extern unsigned int arm_sync_loop_insns (rtx , rtx *);
 160 extern int arm_attr_length_push_multi(rtx, rtx);
 161 extern void arm_expand_compare_and_swap (rtx op[]);
 162 extern void arm_split_compare_and_swap (rtx op[]);
 163 extern void arm_split_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx, rtx);
 164 extern rtx arm_load_tp (rtx);
 165
 166 #if defined TREE_CODE
 167 extern void arm_init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree);
 168 extern bool arm_pad_arg_upward (enum machine_mode, const_tree);
 169 extern bool arm_pad_reg_upward (enum machine_mode, tree, int);
 170 #endif
 171 extern int arm_apply_result_size (void);
 172
 173 #endif /* RTX_CODE */
 174
 175 /* Thumb functions.  */
 176 extern void arm_init_expanders (void);
 177 extern const char *thumb1_unexpanded_epilogue (void);
 178 extern void thumb1_expand_prologue (void);
 179 extern void thumb1_expand_epilogue (void);
 180 extern const char *thumb1_output_interwork (void);
 181 #ifdef TREE_CODE
 182 extern int is_called_in_ARM_mode (tree);
 183 #endif
 184 extern int thumb_shiftable_const (unsigned HOST_WIDE_INT);
 185 #ifdef RTX_CODE
 186 extern enum arm_cond_code maybe_get_arm_condition_code (rtx);
 187 extern void thumb1_final_prescan_insn (rtx_insn *);
 188 extern void thumb2_final_prescan_insn (rtx_insn *);
 189 extern const char *thumb_load_double_from_address (rtx *);
 190 extern const char *thumb_output_move_mem_multiple (int, rtx *);
 191 extern const char *thumb_call_via_reg (rtx);
 192 extern void thumb_expand_movmemqi (rtx *);
 193 extern rtx arm_return_addr (int, rtx);
 194 extern void thumb_reload_out_hi (rtx *);
 195 extern void thumb_reload_in_hi (rtx *);
 196 extern void thumb_set_return_address (rtx, rtx);
 197 extern const char *thumb1_output_casesi (rtx *);
 198 extern const char *thumb2_output_casesi (rtx *);
 199 #endif
 200
 201 /* Defined in pe.c.  */
 202 extern int arm_dllexport_name_p (const char *);
 203 extern int arm_dllimport_name_p (const char *);
 204
 205 #ifdef TREE_CODE
 206 extern void arm_pe_unique_section (tree, int);
 207 extern void arm_pe_encode_section_info (tree, rtx, int);
 208 extern int arm_dllexport_p (tree);
 209 extern int arm_dllimport_p (tree);
 210 extern void arm_mark_dllexport (tree);
 211 extern void arm_mark_dllimport (tree);
 212 #endif
 213
 214 extern void arm_pr_long_calls (struct cpp_reader *);
 215 extern void arm_pr_no_long_calls (struct cpp_reader *);
 216 extern void arm_pr_long_calls_off (struct cpp_reader *);
 217
 218 extern void arm_lang_object_attributes_init(void);
 219
 220 extern const char *arm_mangle_type (const_tree);
 221
 222 extern void arm_order_regs_for_local_alloc (void);
 223
 224 extern int arm_max_conditional_execute ();
 225
 226 /* Vectorizer cost model implementation.  */
 227 struct cpu_vec_costs {
 228   const int scalar_stmt_cost;   /* Cost of any scalar operation, excluding
 229                                    load and store.  */
 230   const int scalar_load_cost;   /* Cost of scalar load.  */
 231   const int scalar_store_cost;  /* Cost of scalar store.  */
 232   const int vec_stmt_cost;      /* Cost of any vector operation, excluding
 233                                    load, store, vector-to-scalar and
 234                                    scalar-to-vector operation.  */
 235   const int vec_to_scalar_cost;    /* Cost of vect-to-scalar operation.  */
 236   const int scalar_to_vec_cost;    /* Cost of scalar-to-vector operation.  */
 237   const int vec_align_load_cost;   /* Cost of aligned vector load.  */
 238   const int vec_unalign_load_cost; /* Cost of unaligned vector load.  */
 239   const int vec_unalign_store_cost; /* Cost of unaligned vector load.  */
 240   const int vec_store_cost;        /* Cost of vector store.  */
 241   const int cond_taken_branch_cost;    /* Cost of taken branch for vectorizer
 242                                           cost model.  */
 243   const int cond_not_taken_branch_cost;/* Cost of not taken branch for
 244                                           vectorizer cost model.  */
 245 };
 246
 247 #ifdef RTX_CODE
 248 /* This needs to be here because we need RTX_CODE and similar.  */
 249
 250 struct cpu_cost_table;
 251
 252 struct tune_params
 253 {
 254   bool (*rtx_costs) (rtx, RTX_CODE, RTX_CODE, int *, bool);
 255   const struct cpu_cost_table *insn_extra_cost;
 256   bool (*sched_adjust_cost) (rtx_insn *, rtx, rtx_insn *, int *);
 257   int constant_limit;
 258   /* Maximum number of instructions to conditionalise.  */
 259   int max_insns_skipped;
 260   int num_prefetch_slots;
 261   int l1_cache_size;
 262   int l1_cache_line_size;
 263   bool prefer_constant_pool;
 264   int (*branch_cost) (bool, bool);
 265   /* Prefer STRD/LDRD instructions over PUSH/POP/LDM/STM.  */
 266   bool prefer_ldrd_strd;
 267   /* The preference for non short cirtcuit operation when optimizing for
 268      performance. The first element covers Thumb state and the second one
 269      is for ARM state.  */
 270   bool logical_op_non_short_circuit[2];
 271   /* Vectorizer costs.  */
 272   const struct cpu_vec_costs* vec_costs;
 273   /* Prefer Neon for 64-bit bitops.  */
 274   bool prefer_neon_for_64bits;
 275   /* Prefer 32-bit encoding instead of flag-setting 16-bit encoding.  */
 276   bool disparage_flag_setting_t16_encodings;
 277   /* Prefer 32-bit encoding instead of 16-bit encoding where subset of flags
 278      would be set.  */
 279   bool disparage_partial_flag_setting_t16_encodings;
 280   /* Prefer to inline string operations like memset by using Neon.  */
 281   bool string_ops_prefer_neon;
 282   /* Maximum number of instructions to inline calls to memset.  */
 283   int max_insns_inline_memset;
 284 };
 285
 286 extern const struct tune_params *current_tune;
 287 extern int vfp3_const_double_for_fract_bits (rtx);
 288 /* return power of two from operand, otherwise 0.  */
 289 extern int vfp3_const_double_for_bits (rtx);
 290
 291 extern void arm_emit_coreregs_64bit_shift (enum rtx_code, rtx, rtx, rtx, rtx,
 292                                            rtx);
 293 extern bool arm_validize_comparison (rtx *, rtx *, rtx *);
 294 #endif /* RTX_CODE */
 295
 296 extern bool arm_gen_setmem (rtx *);
 297 extern void arm_expand_vec_perm (rtx target, rtx op0, rtx op1, rtx sel);
 298 extern bool arm_expand_vec_perm_const (rtx target, rtx op0, rtx op1, rtx sel);
 299
 300 extern bool arm_autoinc_modes_ok_p (enum machine_mode, enum arm_auto_incmodes);
 301
 302 extern void arm_emit_eabi_attribute (const char *, int, int);
 303
 304 /* Defined in gcc/common/config/arm-common.c.  */
 305 extern const char *arm_rewrite_selected_cpu (const char *name);
 306
 307 extern bool arm_is_constant_pool_ref (rtx);
 308
 309 #endif /* ! GCC_ARM_PROTOS_H */