gcc/config/rs6000/rs6000-protos.h

   1 /* Definitions of target machine for GNU compiler, for IBM RS/6000.
   2    Copyright (C) 2000-2020 Free Software Foundation, Inc.
   3    Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
   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 #ifndef GCC_RS6000_PROTOS_H
  22 #define GCC_RS6000_PROTOS_H
  23
  24 /* Declare functions in rs6000.c */
  25
  26 #ifdef RTX_CODE
  27
  28 #ifdef TREE_CODE
  29 extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, int, int, int,
  30                                   tree, machine_mode);
  31 #endif /* TREE_CODE */
  32
  33 extern bool easy_altivec_constant (rtx, machine_mode);
  34 extern bool xxspltib_constant_p (rtx, machine_mode, int *, int *);
  35 extern int vspltis_shifted (rtx);
  36 extern HOST_WIDE_INT const_vector_elt_as_int (rtx, unsigned int);
  37 extern bool macho_lo_sum_memory_operand (rtx, machine_mode);
  38 extern int num_insns_constant (rtx, machine_mode);
  39 extern int small_data_operand (rtx, machine_mode);
  40 extern bool mem_operand_gpr (rtx, machine_mode);
  41 extern bool mem_operand_ds_form (rtx, machine_mode);
  42 extern bool toc_relative_expr_p (const_rtx, bool, const_rtx *, const_rtx *);
  43 extern void validate_condition_mode (enum rtx_code, machine_mode);
  44 extern bool legitimate_constant_pool_address_p (const_rtx, machine_mode,
  45                                                 bool);
  46 extern bool legitimate_indirect_address_p (rtx, int);
  47 extern bool legitimate_indexed_address_p (rtx, int);
  48 extern bool avoiding_indexed_address_p (machine_mode);
  49 extern rtx rs6000_force_indexed_or_indirect_mem (rtx x);
  50
  51 extern rtx rs6000_got_register (rtx);
  52 extern rtx find_addr_reg (rtx);
  53 extern rtx gen_easy_altivec_constant (rtx);
  54 extern const char *output_vec_const_move (rtx *);
  55 extern const char *rs6000_output_move_128bit (rtx *);
  56 extern bool rs6000_move_128bit_ok_p (rtx []);
  57 extern bool rs6000_split_128bit_ok_p (rtx []);
  58 extern void rs6000_expand_float128_convert (rtx, rtx, bool);
  59 extern void rs6000_expand_vector_init (rtx, rtx);
  60 extern void rs6000_expand_vector_set (rtx, rtx, int);
  61 extern void rs6000_expand_vector_extract (rtx, rtx, rtx);
  62 extern void rs6000_split_vec_extract_var (rtx, rtx, rtx, rtx, rtx);
  63 extern rtx rs6000_adjust_vec_address (rtx, rtx, rtx, rtx, machine_mode);
  64 extern void altivec_expand_vec_perm_le (rtx op[4]);
  65 extern void rs6000_expand_extract_even (rtx, rtx, rtx);
  66 extern void rs6000_expand_interleave (rtx, rtx, rtx, bool);
  67 extern void rs6000_scale_v2df (rtx, rtx, int);
  68 extern void rs6000_generate_float2_code (bool, rtx, rtx, rtx);
  69 extern void rs6000_generate_float2_double_code (rtx, rtx, rtx);
  70 extern void rs6000_generate_vsigned2_code (bool, rtx, rtx, rtx);
  71 extern int expand_block_clear (rtx[]);
  72 extern int expand_block_move (rtx[], bool);
  73 extern bool expand_block_compare (rtx[]);
  74 extern bool expand_strn_compare (rtx[], int);
  75 extern bool rs6000_is_valid_mask (rtx, int *, int *, machine_mode);
  76 extern bool rs6000_is_valid_and_mask (rtx, machine_mode);
  77 extern bool rs6000_is_valid_shift_mask (rtx, rtx, machine_mode);
  78 extern bool rs6000_is_valid_insert_mask (rtx, rtx, machine_mode);
  79 extern const char *rs6000_insn_for_and_mask (machine_mode, rtx *, bool);
  80 extern const char *rs6000_insn_for_shift_mask (machine_mode, rtx *, bool);
  81 extern const char *rs6000_insn_for_insert_mask (machine_mode, rtx *, bool);
  82 extern bool rs6000_is_valid_2insn_and (rtx, machine_mode);
  83 extern void rs6000_emit_2insn_and (machine_mode, rtx *, bool, int);
  84 extern int registers_ok_for_quad_peep (rtx, rtx);
  85 extern int mems_ok_for_quad_peep (rtx, rtx);
  86 extern bool gpr_or_gpr_p (rtx, rtx);
  87 extern bool direct_move_p (rtx, rtx);
  88 extern bool quad_address_p (rtx, machine_mode, bool);
  89 extern bool quad_load_store_p (rtx, rtx);
  90 extern bool fusion_gpr_load_p (rtx, rtx, rtx, rtx);
  91 extern void expand_fusion_gpr_load (rtx *);
  92 extern void emit_fusion_addis (rtx, rtx);
  93 extern const char *emit_fusion_gpr_load (rtx, rtx);
  94 extern enum reg_class (*rs6000_preferred_reload_class_ptr) (rtx,
  95                                                             enum reg_class);
  96 extern enum reg_class (*rs6000_secondary_reload_class_ptr) (enum reg_class,
  97                                                             machine_mode,
  98                                                             rtx);
  99 extern void rs6000_secondary_reload_inner (rtx, rtx, rtx, bool);
 100 extern void rs6000_secondary_reload_gpr (rtx, rtx, rtx, bool);
 101
 102
 103 extern int ccr_bit (rtx, int);
 104 extern void rs6000_output_function_entry (FILE *, const char *);
 105 extern void print_operand (FILE *, rtx, int);
 106 extern void print_operand_address (FILE *, rtx);
 107 extern const char *rs6000_call_template (rtx *, unsigned int);
 108 extern const char *rs6000_sibcall_template (rtx *, unsigned int);
 109 extern const char *rs6000_indirect_call_template (rtx *, unsigned int);
 110 extern const char *rs6000_indirect_sibcall_template (rtx *, unsigned int);
 111 extern const char *rs6000_pltseq_template (rtx *, int);
 112 extern enum rtx_code rs6000_reverse_condition (machine_mode,
 113                                                enum rtx_code);
 114 extern rtx rs6000_emit_eqne (machine_mode, rtx, rtx, rtx);
 115 extern rtx rs6000_emit_fp_cror (rtx_code, machine_mode, rtx);
 116 extern void rs6000_emit_sCOND (machine_mode, rtx[]);
 117 extern void rs6000_emit_cbranch (machine_mode, rtx[]);
 118 extern char * output_cbranch (rtx, const char *, int, rtx_insn *);
 119 extern const char * output_probe_stack_range (rtx, rtx, rtx);
 120 extern void rs6000_emit_dot_insn (rtx dst, rtx src, int dot, rtx ccreg);
 121 extern bool rs6000_emit_set_const (rtx, rtx);
 122 extern int rs6000_emit_cmove (rtx, rtx, rtx, rtx);
 123 extern int rs6000_emit_int_cmove (rtx, rtx, rtx, rtx);
 124 extern int rs6000_emit_vector_cond_expr (rtx, rtx, rtx, rtx, rtx, rtx);
 125 extern void rs6000_emit_minmax (rtx, enum rtx_code, rtx, rtx);
 126 extern void rs6000_expand_atomic_compare_and_swap (rtx op[]);
 127 extern rtx swap_endian_selector_for_mode (machine_mode mode);
 128
 129 extern void rs6000_expand_atomic_exchange (rtx op[]);
 130 extern void rs6000_expand_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx);
 131 extern void rs6000_emit_swdiv (rtx, rtx, rtx, bool);
 132 extern void rs6000_emit_swsqrt (rtx, rtx, bool);
 133 extern void output_toc (FILE *, rtx, int, machine_mode);
 134 extern void rs6000_fatal_bad_address (rtx);
 135 extern rtx create_TOC_reference (rtx, rtx);
 136 extern void rs6000_split_multireg_move (rtx, rtx);
 137 extern void rs6000_emit_le_vsx_permute (rtx, rtx, machine_mode);
 138 extern void rs6000_emit_le_vsx_move (rtx, rtx, machine_mode);
 139 extern bool valid_sf_si_move (rtx, rtx, machine_mode);
 140 extern void rs6000_emit_move (rtx, rtx, machine_mode);
 141 extern bool rs6000_legitimate_offset_address_p (machine_mode, rtx,
 142                                                 bool, bool);
 143 extern rtx rs6000_find_base_term (rtx);
 144 extern rtx rs6000_return_addr (int, rtx);
 145 extern void rs6000_output_symbol_ref (FILE*, rtx);
 146 extern HOST_WIDE_INT rs6000_initial_elimination_offset (int, int);
 147 extern void rs6000_emit_popcount (rtx, rtx);
 148 extern void rs6000_emit_parity (rtx, rtx);
 149
 150 extern rtx rs6000_machopic_legitimize_pic_address (rtx, machine_mode,
 151                                                    rtx);
 152 extern rtx rs6000_allocate_stack_temp (machine_mode, bool, bool);
 153 extern align_flags rs6000_loop_align (rtx);
 154 extern void rs6000_split_logical (rtx [], enum rtx_code, bool, bool, bool);
 155 extern bool rs6000_pcrel_p (struct function *);
 156 extern bool rs6000_fndecl_pcrel_p (const_tree);
 157
 158 /* Different PowerPC instruction formats that are used by GCC.  There are
 159    various other instruction formats used by the PowerPC hardware, but these
 160    formats are not currently used by GCC.  */
 161
 162 enum insn_form {
 163   INSN_FORM_BAD,                /* Bad instruction format.  */
 164   INSN_FORM_BASE_REG,           /* Base register only.  */
 165   INSN_FORM_D,                  /* Reg + 16-bit numeric offset.  */
 166   INSN_FORM_DS,                 /* Reg + offset, bottom 2 bits must be 0.  */
 167   INSN_FORM_DQ,                 /* Reg + offset, bottom 4 bits must be 0.  */
 168   INSN_FORM_X,                  /* Base register + index register.  */
 169   INSN_FORM_UPDATE,             /* Address updates base register.  */
 170   INSN_FORM_LO_SUM,             /* Reg + offset using symbol.  */
 171   INSN_FORM_PREFIXED_NUMERIC,   /* Reg + 34 bit numeric offset.  */
 172   INSN_FORM_PCREL_LOCAL,        /* PC-relative local symbol.  */
 173   INSN_FORM_PCREL_EXTERNAL      /* PC-relative external symbol.  */
 174 };
 175
 176 /* Instruction format for the non-prefixed version of a load or store.  This is
 177    used to determine if a 16-bit offset is valid to be used with a non-prefixed
 178    (traditional) instruction or if the bottom bits of the offset cannot be used
 179    with a DS or DQ instruction format, and GCC has to use a prefixed
 180    instruction for the load or store.  */
 181
 182 enum non_prefixed_form {
 183   NON_PREFIXED_DEFAULT,         /* Use the default.  */
 184   NON_PREFIXED_D,               /* All 16-bits are valid.  */
 185   NON_PREFIXED_DS,              /* Bottom 2 bits must be 0.  */
 186   NON_PREFIXED_DQ,              /* Bottom 4 bits must be 0.  */
 187   NON_PREFIXED_X                /* No offset memory form exists.  */
 188 };
 189
 190 extern enum insn_form address_to_insn_form (rtx, machine_mode,
 191                                             enum non_prefixed_form);
 192 extern bool prefixed_load_p (rtx_insn *);
 193 extern bool prefixed_store_p (rtx_insn *);
 194 extern bool prefixed_paddi_p (rtx_insn *);
 195 extern void rs6000_asm_output_opcode (FILE *);
 196 extern void rs6000_final_prescan_insn (rtx_insn *, rtx [], int);
 197 extern int rs6000_adjust_insn_length (rtx_insn *, int);
 198
 199 /* Return true if the address can be used for a prefixed load, store, or add
 200    immediate instructions that cannot be used with a non-prefixed instruction.
 201    For example, using a numeric offset that is not valid for the non-prefixed
 202    instruction or a PC-relative reference to a local symbol would return true,
 203    but an address with an offset of 64 would not return true.
 204
 205    References to external PC-relative symbols aren't allowed, because GCC has
 206    to load the address into a register and then issue a separate load or
 207    store.  */
 208
 209 static inline bool
 210 address_is_prefixed (rtx addr,
 211                      machine_mode mode,
 212                      enum non_prefixed_form non_prefixed)
 213 {
 214   enum insn_form iform = address_to_insn_form (addr, mode, non_prefixed);
 215   return (iform == INSN_FORM_PREFIXED_NUMERIC
 216           || iform == INSN_FORM_PCREL_LOCAL);
 217 }
 218 #endif /* RTX_CODE */
 219
 220 #ifdef TREE_CODE
 221 extern unsigned int rs6000_data_alignment (tree, unsigned int, enum data_align);
 222 extern bool rs6000_special_adjust_field_align_p (tree, unsigned int);
 223 extern unsigned int rs6000_special_round_type_align (tree, unsigned int,
 224                                                      unsigned int);
 225 extern unsigned int darwin_rs6000_special_round_type_align (tree, unsigned int,
 226                                                             unsigned int);
 227 extern tree altivec_resolve_overloaded_builtin (location_t, tree, void *);
 228 extern rtx rs6000_libcall_value (machine_mode);
 229 extern rtx rs6000_va_arg (tree, tree);
 230 extern int function_ok_for_sibcall (tree);
 231 extern int rs6000_reg_parm_stack_space (tree, bool);
 232 extern void rs6000_asm_weaken_decl (FILE *, tree, const char *, const char *);
 233 extern void rs6000_xcoff_declare_function_name (FILE *, const char *, tree);
 234 extern void rs6000_xcoff_declare_object_name (FILE *, const char *, tree);
 235 extern void rs6000_xcoff_asm_output_aligned_decl_common (FILE *, tree,
 236                                                          const char *,
 237                                                          unsigned HOST_WIDE_INT,
 238                                                          unsigned HOST_WIDE_INT);
 239 extern void rs6000_elf_declare_function_name (FILE *, const char *, tree);
 240 extern bool rs6000_elf_in_small_data_p (const_tree);
 241
 242 #endif /* TREE_CODE */
 243
 244 extern int direct_return (void);
 245 extern int first_reg_to_save (void);
 246 extern int first_fp_reg_to_save (void);
 247 extern void output_ascii (FILE *, const char *, int);
 248 extern void rs6000_gen_section_name (char **, const char *, const char *);
 249 extern void output_function_profiler (FILE *, int);
 250 extern void output_profile_hook  (int);
 251 extern int rs6000_trampoline_size (void);
 252 extern alias_set_type get_TOC_alias_set (void);
 253 extern void rs6000_emit_prologue (void);
 254 extern void rs6000_emit_load_toc_table (int);
 255 extern unsigned int rs6000_dbx_register_number (unsigned int, unsigned int);
 256 extern void rs6000_emit_epilogue (enum epilogue_type);
 257 extern void rs6000_expand_split_stack_prologue (void);
 258 extern void rs6000_split_stack_space_check (rtx, rtx);
 259 extern void rs6000_emit_eh_reg_restore (rtx, rtx);
 260 extern void rs6000_call_aix (rtx, rtx, rtx, rtx);
 261 extern void rs6000_sibcall_aix (rtx, rtx, rtx, rtx);
 262 extern void rs6000_call_sysv (rtx, rtx, rtx, rtx);
 263 extern void rs6000_sibcall_sysv (rtx, rtx, rtx, rtx);
 264 extern void rs6000_call_darwin (rtx, rtx, rtx, rtx);
 265 extern void rs6000_sibcall_darwin (rtx, rtx, rtx, rtx);
 266 extern void rs6000_aix_asm_output_dwarf_table_ref (char *);
 267 extern void get_ppc476_thunk_name (char name[32]);
 268 extern bool rs6000_overloaded_builtin_p (enum rs6000_builtins);
 269 extern bool rs6000_builtin_is_supported_p (enum rs6000_builtins);
 270 extern const char *rs6000_overloaded_builtin_name (enum rs6000_builtins);
 271 extern int rs6000_store_data_bypass_p (rtx_insn *, rtx_insn *);
 272 extern HOST_WIDE_INT rs6000_builtin_mask_calculate (void);
 273 extern void rs6000_asm_output_dwarf_pcrel (FILE *file, int size,
 274                                            const char *label);
 275 extern void rs6000_asm_output_dwarf_datarel (FILE *file, int size,
 276                                              const char *label);
 277
 278 /* Declare functions in rs6000-c.c */
 279
 280 extern void rs6000_pragma_longcall (struct cpp_reader *);
 281 extern void rs6000_cpu_cpp_builtins (struct cpp_reader *);
 282 #ifdef TREE_CODE
 283 extern bool rs6000_pragma_target_parse (tree, tree);
 284 #endif
 285 extern void rs6000_activate_target_options (tree new_tree);
 286 extern void rs6000_target_modify_macros (bool, HOST_WIDE_INT, HOST_WIDE_INT);
 287 extern void (*rs6000_target_modify_macros_ptr) (bool, HOST_WIDE_INT,
 288                                                 HOST_WIDE_INT);
 289
 290 /* Declare functions in rs6000-d.c  */
 291 extern void rs6000_d_target_versions (void);
 292
 293 #ifdef NO_DOLLAR_IN_LABEL
 294 const char * rs6000_xcoff_strip_dollar (const char *);
 295 #endif
 296
 297 extern unsigned char rs6000_class_max_nregs[][LIM_REG_CLASSES];
 298 extern unsigned char rs6000_hard_regno_nregs[][FIRST_PSEUDO_REGISTER];
 299
 300 extern bool rs6000_linux_float_exceptions_rounding_supported_p (void);
 301
 302 /* Pass management.  */
 303 namespace gcc { class context; }
 304 class rtl_opt_pass;
 305
 306 extern rtl_opt_pass *make_pass_analyze_swaps (gcc::context *);
 307 extern bool rs6000_sum_of_two_registers_p (const_rtx expr);
 308 extern bool rs6000_quadword_masked_address_p (const_rtx exp);
 309 extern rtx rs6000_gen_lvx (enum machine_mode, rtx, rtx);
 310 extern rtx rs6000_gen_stvx (enum machine_mode, rtx, rtx);
 311
 312 #endif  /* rs6000-protos.h */