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[thirdparty/gcc.git] / gcc / config / rs6000 / rs6000-protos.h
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9ebbca7d 1/* Definitions of target machine for GNU compiler, for IBM RS/6000.
7adcbafe 2 Copyright (C) 2000-2022 Free Software Foundation, Inc.
9ebbca7d
GK		 3 Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
4
5de601cf 5 This file is part of GCC.
9ebbca7d 6
5de601cf
NC		 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
2f83c7d6 9 by the Free Software Foundation; either version 3, or (at your
5de601cf 10 option) any later version.
9ebbca7d 11
5de601cf
NC		 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.
9ebbca7d 16
5de601cf 17 You should have received a copy of the GNU General Public License
2f83c7d6
NC		 18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
9ebbca7d 20
a5c76ee6
ZW		 21#ifndef GCC_RS6000_PROTOS_H
22#define GCC_RS6000_PROTOS_H
23
e53b6e56 24/* Declare functions in rs6000.cc */
9ebbca7d
GK		 25
26#ifdef RTX_CODE
27
28#ifdef TREE_CODE
617718f7 29extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, int, int, int,
ef4bddc2 30 tree, machine_mode);
9ebbca7d
GK		 31#endif /* TREE_CODE */
32
e0e82856 33extern int easy_altivec_constant (rtx, machine_mode);
50c78b9a 34extern bool xxspltib_constant_p (rtx, machine_mode, int *, int *);
683be46f 35extern int vspltis_shifted (rtx);
847535b6 36extern HOST_WIDE_INT const_vector_elt_as_int (rtx, unsigned int);
ef4bddc2
RS		 37extern bool macho_lo_sum_memory_operand (rtx, machine_mode);
38extern int num_insns_constant (rtx, machine_mode);
ef4bddc2
RS		 39extern int small_data_operand (rtx, machine_mode);
40extern bool mem_operand_gpr (rtx, machine_mode);
ad69178c 41extern bool mem_operand_ds_form (rtx, machine_mode);
f990f3a3 42extern bool toc_relative_expr_p (const_rtx, bool, const_rtx *, const_rtx *);
ef4bddc2
RS		 43extern void validate_condition_mode (enum rtx_code, machine_mode);
44extern bool legitimate_constant_pool_address_p (const_rtx, machine_mode,
77b0791e 45 bool);
48d72335 46extern bool legitimate_indirect_address_p (rtx, int);
6fb5fa3c 47extern bool legitimate_indexed_address_p (rtx, int);
ef4bddc2 48extern bool avoiding_indexed_address_p (machine_mode);
320314db 49extern rtx rs6000_force_indexed_or_indirect_mem (rtx x);
48d72335 50
9390387d
AM		 51extern rtx rs6000_got_register (rtx);
52extern rtx find_addr_reg (rtx);
66180ff3 53extern rtx gen_easy_altivec_constant (rtx);
a2369ed3 54extern const char *output_vec_const_move (rtx *);
19be72ab 55extern const char *rs6000_output_move_128bit (rtx *);
a16a872d
MM		 56extern bool rs6000_move_128bit_ok_p (rtx []);
57extern bool rs6000_split_128bit_ok_p (rtx []);
526303ec 58extern void rs6000_expand_float128_convert (rtx, rtx, bool);
7a4eca66 59extern void rs6000_expand_vector_init (rtx, rtx);
5e9f814d 60extern void rs6000_expand_vector_set (rtx, rtx, rtx);
98060bbe 61extern void rs6000_expand_vector_extract (rtx, rtx, rtx);
e0d32185 62extern void rs6000_split_vec_extract_var (rtx, rtx, rtx, rtx, rtx);
d0047a25 63extern rtx rs6000_adjust_vec_address (rtx, rtx, rtx, rtx, machine_mode);
f200869a 64extern void altivec_expand_vec_perm_le (rtx op[4]);
5aebfdad
RH		 65extern void rs6000_expand_extract_even (rtx, rtx, rtx);
66extern void rs6000_expand_interleave (rtx, rtx, rtx, bool);
70f0f8b2 67extern void rs6000_scale_v2df (rtx, rtx, int);
be1418c7 68extern void rs6000_generate_float2_code (bool, rtx, rtx, rtx);
19d22f7c 69extern void rs6000_generate_float2_double_code (rtx, rtx, rtx);
e5898daf 70extern void rs6000_generate_vsigned2_code (bool, rtx, rtx, rtx);
fba73eb1 71extern int expand_block_clear (rtx[]);
c8241327 72extern int expand_block_move (rtx[], bool);
9f38dde2 73extern bool expand_block_compare (rtx[]);
0edd264d 74extern bool expand_strn_compare (rtx[], int);
7fc5cca3 75extern bool rs6000_is_valid_mask (rtx, int *, int *, machine_mode);
19d81fda 76extern bool rs6000_is_valid_rotate_dot_mask (rtx mask, machine_mode mode);
7fc5cca3
SB		 77extern bool rs6000_is_valid_and_mask (rtx, machine_mode);
78extern bool rs6000_is_valid_shift_mask (rtx, rtx, machine_mode);
79extern bool rs6000_is_valid_insert_mask (rtx, rtx, machine_mode);
80extern const char *rs6000_insn_for_and_mask (machine_mode, rtx *, bool);
81extern const char *rs6000_insn_for_shift_mask (machine_mode, rtx *, bool);
82extern const char *rs6000_insn_for_insert_mask (machine_mode, rtx *, bool);
83extern bool rs6000_is_valid_2insn_and (rtx, machine_mode);
a34f4f64 84extern void rs6000_emit_2insn_and (machine_mode, rtx *, bool, int);
a2369ed3 85extern int registers_ok_for_quad_peep (rtx, rtx);
90f81f99 86extern int mems_ok_for_quad_peep (rtx, rtx);
3a1f863f 87extern bool gpr_or_gpr_p (rtx, rtx);
19be72ab 88extern bool direct_move_p (rtx, rtx);
3fd2b007 89extern bool quad_address_p (rtx, machine_mode, bool);
19be72ab 90extern bool quad_load_store_p (rtx, rtx);
3f99b061 91extern bool fusion_gpr_load_p (rtx, rtx, rtx, rtx);
f758f299 92extern void expand_fusion_gpr_load (rtx *);
0bcd172e 93extern void emit_fusion_addis (rtx, rtx);
3f99b061 94extern const char *emit_fusion_gpr_load (rtx, rtx);
8beb65e3
MM		 95extern enum reg_class (*rs6000_preferred_reload_class_ptr) (rtx,
96 enum reg_class);
97extern enum reg_class (*rs6000_secondary_reload_class_ptr) (enum reg_class,
ef4bddc2 98 machine_mode,
8beb65e3 99 rtx);
8beb65e3 100extern void rs6000_secondary_reload_inner (rtx, rtx, rtx, bool);
d32d6b75 101extern void rs6000_secondary_reload_gpr (rtx, rtx, rtx, bool);
e2e95f45
RE		 102
103
a2369ed3 104extern int ccr_bit (rtx, int);
85b776df 105extern void rs6000_output_function_entry (FILE *, const char *);
a2369ed3
DJ		 106extern void print_operand (FILE *, rtx, int);
107extern void print_operand_address (FILE *, rtx);
ece3bca2
AM		 108extern const char *rs6000_call_template (rtx *, unsigned int);
109extern const char *rs6000_sibcall_template (rtx *, unsigned int);
ce83eeda
AM		 110extern const char *rs6000_indirect_call_template (rtx *, unsigned int);
111extern const char *rs6000_indirect_sibcall_template (rtx *, unsigned int);
3f79c0ad 112extern const char *rs6000_pltseq_template (rtx *, int);
ef4bddc2 113extern enum rtx_code rs6000_reverse_condition (machine_mode,
3a1f863f 114 enum rtx_code);
a935964d 115extern rtx rs6000_emit_eqne (machine_mode, rtx, rtx, rtx);
eb548534 116extern rtx rs6000_emit_fp_cror (rtx_code, machine_mode, rtx);
ef4bddc2
RS		 117extern void rs6000_emit_sCOND (machine_mode, rtx[]);
118extern void rs6000_emit_cbranch (machine_mode, rtx[]);
e64e631b 119extern char * output_cbranch (rtx, const char *, int, rtx_insn *);
af2c8a96 120extern const char * output_probe_stack_range (rtx, rtx, rtx);
8845cb37 121extern void rs6000_emit_dot_insn (rtx dst, rtx src, int dot, rtx ccreg);
bfe51f42 122extern bool rs6000_emit_set_const (rtx, rtx);
aa53f657
MM		 123extern bool rs6000_emit_cmove (rtx, rtx, rtx, rtx);
124extern bool rs6000_emit_int_cmove (rtx, rtx, rtx, rtx);
21213b4c 125extern int rs6000_emit_vector_cond_expr (rtx, rtx, rtx, rtx, rtx, rtx);
a2369ed3 126extern void rs6000_emit_minmax (rtx, enum rtx_code, rtx, rtx);
2747a046 127extern void rs6000_expand_atomic_compare_and_swap (rtx op[]);
fc504349
CL		 128extern rtx swap_endian_selector_for_mode (machine_mode mode);
129
2747a046
RH		 130extern void rs6000_expand_atomic_exchange (rtx op[]);
131extern void rs6000_expand_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx);
92902797 132extern void rs6000_emit_swdiv (rtx, rtx, rtx, bool);
4f0055bd 133extern void rs6000_emit_swsqrt (rtx, rtx, bool);
ef4bddc2 134extern void output_toc (FILE *, rtx, int, machine_mode);
a2369ed3 135extern void rs6000_fatal_bad_address (rtx);
070b27da 136extern rtx create_TOC_reference (rtx, rtx);
a9baceb1 137extern void rs6000_split_multireg_move (rtx, rtx);
02d3ba0e 138extern void rs6000_emit_le_vsx_permute (rtx, rtx, machine_mode);
ef4bddc2 139extern void rs6000_emit_le_vsx_move (rtx, rtx, machine_mode);
fba4b861 140extern bool valid_sf_si_move (rtx, rtx, machine_mode);
ef4bddc2 141extern void rs6000_emit_move (rtx, rtx, machine_mode);
ef4bddc2 142extern bool rs6000_legitimate_offset_address_p (machine_mode, rtx,
d32d6b75 143 bool, bool);
944258eb 144extern rtx rs6000_find_base_term (rtx);
a2369ed3
DJ		 145extern rtx rs6000_return_addr (int, rtx);
146extern void rs6000_output_symbol_ref (FILE*, rtx);
d1d0c603 147extern HOST_WIDE_INT rs6000_initial_elimination_offset (int, int);
565ef4ba
RS		 148extern void rs6000_emit_popcount (rtx, rtx);
149extern void rs6000_emit_parity (rtx, rtx);
a2369ed3 150
ef4bddc2 151extern rtx rs6000_machopic_legitimize_pic_address (rtx, machine_mode,
fa5b0972 152 rtx);
ef4bddc2 153extern rtx rs6000_allocate_stack_temp (machine_mode, bool, bool);
e6de5335 154extern align_flags rs6000_loop_align (rtx);
44c3a8bb 155extern void rs6000_split_logical (rtx [], enum rtx_code, bool, bool, bool);
8c0f8755
BS		 156extern bool rs6000_function_pcrel_p (struct function *);
157extern bool rs6000_pcrel_p (void);
91117603 158extern bool rs6000_fndecl_pcrel_p (const_tree);
3493b0c3 159extern void rs6000_output_addr_vec_elt (FILE *, int);
26ca7d1b
MM		 160
161/* Different PowerPC instruction formats that are used by GCC. There are
162 various other instruction formats used by the PowerPC hardware, but these
163 formats are not currently used by GCC. */
164
165enum insn_form {
166 INSN_FORM_BAD, /* Bad instruction format. */
167 INSN_FORM_BASE_REG, /* Base register only. */
168 INSN_FORM_D, /* Reg + 16-bit numeric offset. */
169 INSN_FORM_DS, /* Reg + offset, bottom 2 bits must be 0. */
170 INSN_FORM_DQ, /* Reg + offset, bottom 4 bits must be 0. */
171 INSN_FORM_X, /* Base register + index register. */
172 INSN_FORM_UPDATE, /* Address updates base register. */
173 INSN_FORM_LO_SUM, /* Reg + offset using symbol. */
174 INSN_FORM_PREFIXED_NUMERIC, /* Reg + 34 bit numeric offset. */
175 INSN_FORM_PCREL_LOCAL, /* PC-relative local symbol. */
176 INSN_FORM_PCREL_EXTERNAL /* PC-relative external symbol. */
177};
178
179/* Instruction format for the non-prefixed version of a load or store. This is
180 used to determine if a 16-bit offset is valid to be used with a non-prefixed
181 (traditional) instruction or if the bottom bits of the offset cannot be used
182 with a DS or DQ instruction format, and GCC has to use a prefixed
183 instruction for the load or store. */
184
185enum non_prefixed_form {
186 NON_PREFIXED_DEFAULT, /* Use the default. */
187 NON_PREFIXED_D, /* All 16-bits are valid. */
188 NON_PREFIXED_DS, /* Bottom 2 bits must be 0. */
189 NON_PREFIXED_DQ, /* Bottom 4 bits must be 0. */
190 NON_PREFIXED_X /* No offset memory form exists. */
191};
192
193extern enum insn_form address_to_insn_form (rtx, machine_mode,
194 enum non_prefixed_form);
7a279bed
AS		 195extern bool address_is_non_pfx_d_or_x (rtx addr, machine_mode mode,
196 enum non_prefixed_form non_prefix_format);
b8d85f56
AS		 197extern bool pcrel_opt_valid_mem_p (rtx, machine_mode, rtx);
198enum non_prefixed_form reg_to_non_prefixed (rtx reg, machine_mode mode);
26ca7d1b
MM		 199extern bool prefixed_load_p (rtx_insn *);
200extern bool prefixed_store_p (rtx_insn *);
201extern bool prefixed_paddi_p (rtx_insn *);
d730aa8a 202extern bool prefixed_xxsplti_p (rtx_insn *);
26ca7d1b 203extern void rs6000_asm_output_opcode (FILE *);
b8d85f56 204extern void output_pcrel_opt_reloc (rtx);
26ca7d1b 205extern void rs6000_final_prescan_insn (rtx_insn *, rtx [], int);
ca06b86c 206extern int rs6000_adjust_insn_length (rtx_insn *, int);
26ca7d1b
MM		 207
208/* Return true if the address can be used for a prefixed load, store, or add
209 immediate instructions that cannot be used with a non-prefixed instruction.
210 For example, using a numeric offset that is not valid for the non-prefixed
211 instruction or a PC-relative reference to a local symbol would return true,
212 but an address with an offset of 64 would not return true.
213
214 References to external PC-relative symbols aren't allowed, because GCC has
215 to load the address into a register and then issue a separate load or
216 store. */
217
218static inline bool
219address_is_prefixed (rtx addr,
220 machine_mode mode,
221 enum non_prefixed_form non_prefixed)
222{
223 enum insn_form iform = address_to_insn_form (addr, mode, non_prefixed);
224 return (iform == INSN_FORM_PREFIXED_NUMERIC
225 || iform == INSN_FORM_PCREL_LOCAL);
226}
c6756b3b
MM		 227
228/* Functions and data structures relating to 128-bit constants that are
229 converted to byte, half-word, word, and double-word values. All fields are
230 kept in big endian order. We also convert scalar values to 128-bits if they
231 are going to be loaded into vector registers. */
232#define VECTOR_128BIT_BITS 128
233#define VECTOR_128BIT_BYTES (128 / 8)
234#define VECTOR_128BIT_HALF_WORDS (128 / 16)
235#define VECTOR_128BIT_WORDS (128 / 32)
236#define VECTOR_128BIT_DOUBLE_WORDS (128 / 64)
237
238typedef struct {
239 /* Constant as various sized items. */
240 unsigned HOST_WIDE_INT double_words[VECTOR_128BIT_DOUBLE_WORDS];
241 unsigned int words[VECTOR_128BIT_WORDS];
242 unsigned short half_words[VECTOR_128BIT_HALF_WORDS];
243 unsigned char bytes[VECTOR_128BIT_BYTES];
244
245 unsigned original_size; /* Constant size before splat. */
246 bool fp_constant_p; /* Is the constant floating point? */
247 bool all_double_words_same; /* Are the double words all equal? */
248 bool all_words_same; /* Are the words all equal? */
249 bool all_half_words_same; /* Are the half words all equal? */
250 bool all_bytes_same; /* Are the bytes all equal? */
251} vec_const_128bit_type;
252
253extern bool vec_const_128bit_to_bytes (rtx, machine_mode,
254 vec_const_128bit_type *);
8ccd8b12 255extern unsigned constant_generates_lxvkq (vec_const_128bit_type *);
d730aa8a 256extern unsigned constant_generates_xxspltiw (vec_const_128bit_type *);
8d443ac0 257extern unsigned constant_generates_xxspltidp (vec_const_128bit_type *);
9ebbca7d
GK		 258#endif /* RTX_CODE */
259
260#ifdef TREE_CODE
69eff9da 261extern unsigned int rs6000_data_alignment (tree, unsigned int, enum data_align);
42a21b4c 262extern unsigned int rs6000_special_adjust_field_align (tree, unsigned int);
fa5b0972
AM		 263extern unsigned int rs6000_special_round_type_align (tree, unsigned int,
264 unsigned int);
58182de3
GK		 265extern unsigned int darwin_rs6000_special_round_type_align (tree, unsigned int,
266 unsigned int);
4b29c5e5 267extern tree altivec_resolve_overloaded_builtin (location_t, tree, void *);
ef4bddc2 268extern rtx rs6000_libcall_value (machine_mode);
9390387d 269extern rtx rs6000_va_arg (tree, tree);
a2369ed3 270extern int function_ok_for_sibcall (tree);
ddbb449f 271extern int rs6000_reg_parm_stack_space (tree, bool);
8d91472f 272extern void rs6000_asm_weaken_decl (FILE *, tree, const char *, const char *);
b36e833f 273extern void rs6000_xcoff_declare_function_name (FILE *, const char *, tree);
9af46873 274extern void rs6000_xcoff_declare_object_name (FILE *, const char *, tree);
8d91472f
DE		 275extern void rs6000_xcoff_asm_output_aligned_decl_common (FILE *, tree,
276 const char *,
277 unsigned HOST_WIDE_INT,
92f59e47 278 unsigned int);
a2369ed3 279extern void rs6000_elf_declare_function_name (FILE *, const char *, tree);
3101faab 280extern bool rs6000_elf_in_small_data_p (const_tree);
ee890fe2 281
9ebbca7d
GK		 282#endif /* TREE_CODE */
283
a2369ed3 284extern int direct_return (void);
a2369ed3
DJ		 285extern int first_reg_to_save (void);
286extern int first_fp_reg_to_save (void);
a2369ed3
DJ		 287extern void output_ascii (FILE *, const char *, int);
288extern void rs6000_gen_section_name (char **, const char *, const char *);
289extern void output_function_profiler (FILE *, int);
290extern void output_profile_hook (int);
291extern int rs6000_trampoline_size (void);
4862826d 292extern alias_set_type get_TOC_alias_set (void);
a2369ed3
DJ		 293extern void rs6000_emit_prologue (void);
294extern void rs6000_emit_load_toc_table (int);
3d36d470 295extern unsigned int rs6000_dbx_register_number (unsigned int, unsigned int);
a3d59ce9 296extern void rs6000_emit_epilogue (enum epilogue_type);
0f0fd745
AM		 297extern void rs6000_expand_split_stack_prologue (void);
298extern void rs6000_split_stack_space_check (rtx, rtx);
d1d0c603 299extern void rs6000_emit_eh_reg_restore (rtx, rtx);
f90f960c
UW		 300extern void rs6000_call_aix (rtx, rtx, rtx, rtx);
301extern void rs6000_sibcall_aix (rtx, rtx, rtx, rtx);
ece3bca2 302extern void rs6000_call_sysv (rtx, rtx, rtx, rtx);
3f79c0ad 303extern void rs6000_sibcall_sysv (rtx, rtx, rtx, rtx);
aa3a2eca
IS		 304extern void rs6000_call_darwin (rtx, rtx, rtx, rtx);
305extern void rs6000_sibcall_darwin (rtx, rtx, rtx, rtx);
7e49a4b3 306extern void rs6000_aix_asm_output_dwarf_table_ref (char *);
be26142a 307extern void get_ppc476_thunk_name (char name[32]);
6ba86ba7 308extern int rs6000_store_data_bypass_p (rtx_insn *, rtx_insn *);
b85aed95 309extern HOST_WIDE_INT rs6000_builtin_mask_calculate (void);
e707a2dd
AD		 310extern void rs6000_asm_output_dwarf_pcrel (FILE *file, int size,
311 const char *label);
312extern void rs6000_asm_output_dwarf_datarel (FILE *file, int size,
313 const char *label);
75913096 314extern long rs6000_const_f32_to_i32 (rtx operand);
7e49a4b3 315
e53b6e56 316/* Declare functions in rs6000-c.cc */
4c4eb375 317
a2369ed3
DJ		 318extern void rs6000_pragma_longcall (struct cpp_reader *);
319extern void rs6000_cpu_cpp_builtins (struct cpp_reader *);
fd438373
MM		 320#ifdef TREE_CODE
321extern bool rs6000_pragma_target_parse (tree, tree);
322#endif
20a7e14a 323extern void rs6000_activate_target_options (tree new_tree);
b85aed95
MM		 324extern void rs6000_target_modify_macros (bool, HOST_WIDE_INT, HOST_WIDE_INT);
325extern void (*rs6000_target_modify_macros_ptr) (bool, HOST_WIDE_INT,
326 HOST_WIDE_INT);
a5c76ee6 327
e53b6e56 328/* Declare functions in rs6000-d.cc */
b4c522fa 329extern void rs6000_d_target_versions (void);
3785d2b2 330extern void rs6000_d_register_target_info (void);
b4c522fa 331
ee06c6a5
DE		 332#ifdef NO_DOLLAR_IN_LABEL
333const char * rs6000_xcoff_strip_dollar (const char *);
334#endif
335
cacf1ca8
MM		 336extern unsigned char rs6000_class_max_nregs[][LIM_REG_CLASSES];
337extern unsigned char rs6000_hard_regno_nregs[][FIRST_PSEUDO_REGISTER];
9193fb05
JM		 338
339extern bool rs6000_linux_float_exceptions_rounding_supported_p (void);
5715e980
BS		 340
341/* Pass management. */
342namespace gcc { class context; }
343class rtl_opt_pass;
344
345extern rtl_opt_pass *make_pass_analyze_swaps (gcc::context *);
b8d85f56 346extern rtl_opt_pass *make_pass_pcrel_opt (gcc::context *);
a3a821c9
KN		 347extern bool rs6000_sum_of_two_registers_p (const_rtx expr);
348extern bool rs6000_quadword_masked_address_p (const_rtx exp);
349extern rtx rs6000_gen_lvx (enum machine_mode, rtx, rtx);
350extern rtx rs6000_gen_stvx (enum machine_mode, rtx, rtx);
5715e980 351
7f3b1997 352extern void rs6000_emit_xxspltidp_v2df (rtx, long value);
a5c76ee6 353#endif /* rs6000-protos.h */
Mirror of https://gcc.gnu.org/git/gcc.git