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9ebbca7d 1/* Definitions of target machine for GNU compiler, for IBM RS/6000.
8d9254fc 2 Copyright (C) 2000-2020 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
9ebbca7d
GK		 24/* Declare functions in rs6000.c */
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
ef4bddc2 33extern bool 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
DE		 59extern void rs6000_expand_vector_init (rtx, rtx);
60extern void rs6000_expand_vector_set (rtx, rtx, int);
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
SB		 75extern bool rs6000_is_valid_mask (rtx, int *, int *, machine_mode);
76extern bool rs6000_is_valid_and_mask (rtx, machine_mode);
77extern bool rs6000_is_valid_shift_mask (rtx, rtx, machine_mode);
78extern bool rs6000_is_valid_insert_mask (rtx, rtx, machine_mode);
79extern const char *rs6000_insn_for_and_mask (machine_mode, rtx *, bool);
80extern const char *rs6000_insn_for_shift_mask (machine_mode, rtx *, bool);
81extern const char *rs6000_insn_for_insert_mask (machine_mode, rtx *, bool);
82extern bool rs6000_is_valid_2insn_and (rtx, machine_mode);
a34f4f64 83extern void rs6000_emit_2insn_and (machine_mode, rtx *, bool, int);
a2369ed3 84extern int registers_ok_for_quad_peep (rtx, rtx);
90f81f99 85extern int mems_ok_for_quad_peep (rtx, rtx);
3a1f863f 86extern bool gpr_or_gpr_p (rtx, rtx);
19be72ab 87extern bool direct_move_p (rtx, rtx);
3fd2b007 88extern bool quad_address_p (rtx, machine_mode, bool);
19be72ab 89extern bool quad_load_store_p (rtx, rtx);
3f99b061 90extern bool fusion_gpr_load_p (rtx, rtx, rtx, rtx);
f758f299 91extern void expand_fusion_gpr_load (rtx *);
0bcd172e 92extern void emit_fusion_addis (rtx, rtx);
3f99b061 93extern const char *emit_fusion_gpr_load (rtx, rtx);
8beb65e3
MM		 94extern enum reg_class (*rs6000_preferred_reload_class_ptr) (rtx,
95 enum reg_class);
96extern enum reg_class (*rs6000_secondary_reload_class_ptr) (enum reg_class,
ef4bddc2 97 machine_mode,
8beb65e3 98 rtx);
8beb65e3 99extern void rs6000_secondary_reload_inner (rtx, rtx, rtx, bool);
d32d6b75 100extern void rs6000_secondary_reload_gpr (rtx, rtx, rtx, bool);
e2e95f45
RE		 101
102
a2369ed3 103extern int ccr_bit (rtx, int);
85b776df 104extern void rs6000_output_function_entry (FILE *, const char *);
a2369ed3
DJ		 105extern void print_operand (FILE *, rtx, int);
106extern void print_operand_address (FILE *, rtx);
ece3bca2
AM		 107extern const char *rs6000_call_template (rtx *, unsigned int);
108extern const char *rs6000_sibcall_template (rtx *, unsigned int);
ce83eeda
AM		 109extern const char *rs6000_indirect_call_template (rtx *, unsigned int);
110extern const char *rs6000_indirect_sibcall_template (rtx *, unsigned int);
3f79c0ad 111extern const char *rs6000_pltseq_template (rtx *, int);
ef4bddc2 112extern enum rtx_code rs6000_reverse_condition (machine_mode,
3a1f863f 113 enum rtx_code);
a935964d 114extern rtx rs6000_emit_eqne (machine_mode, rtx, rtx, rtx);
eb548534 115extern rtx rs6000_emit_fp_cror (rtx_code, machine_mode, rtx);
ef4bddc2
RS		 116extern void rs6000_emit_sCOND (machine_mode, rtx[]);
117extern void rs6000_emit_cbranch (machine_mode, rtx[]);
e64e631b 118extern char * output_cbranch (rtx, const char *, int, rtx_insn *);
af2c8a96 119extern const char * output_probe_stack_range (rtx, rtx, rtx);
8845cb37 120extern void rs6000_emit_dot_insn (rtx dst, rtx src, int dot, rtx ccreg);
bfe51f42 121extern bool rs6000_emit_set_const (rtx, rtx);
aa53f657
MM		 122extern bool rs6000_emit_cmove (rtx, rtx, rtx, rtx);
123extern bool rs6000_emit_int_cmove (rtx, rtx, rtx, rtx);
21213b4c 124extern int rs6000_emit_vector_cond_expr (rtx, rtx, rtx, rtx, rtx, rtx);
a2369ed3 125extern void rs6000_emit_minmax (rtx, enum rtx_code, rtx, rtx);
2747a046 126extern void rs6000_expand_atomic_compare_and_swap (rtx op[]);
fc504349
CL		 127extern rtx swap_endian_selector_for_mode (machine_mode mode);
128
2747a046
RH		 129extern void rs6000_expand_atomic_exchange (rtx op[]);
130extern void rs6000_expand_atomic_op (enum rtx_code, rtx, rtx, rtx, rtx, rtx);
92902797 131extern void rs6000_emit_swdiv (rtx, rtx, rtx, bool);
4f0055bd 132extern void rs6000_emit_swsqrt (rtx, rtx, bool);
ef4bddc2 133extern void output_toc (FILE *, rtx, int, machine_mode);
a2369ed3 134extern void rs6000_fatal_bad_address (rtx);
070b27da 135extern rtx create_TOC_reference (rtx, rtx);
a9baceb1 136extern void rs6000_split_multireg_move (rtx, rtx);
02d3ba0e 137extern void rs6000_emit_le_vsx_permute (rtx, rtx, machine_mode);
ef4bddc2 138extern void rs6000_emit_le_vsx_move (rtx, rtx, machine_mode);
fba4b861 139extern bool valid_sf_si_move (rtx, rtx, machine_mode);
ef4bddc2 140extern void rs6000_emit_move (rtx, rtx, machine_mode);
ef4bddc2 141extern bool rs6000_legitimate_offset_address_p (machine_mode, rtx,
d32d6b75 142 bool, bool);
944258eb 143extern rtx rs6000_find_base_term (rtx);
a2369ed3
DJ		 144extern rtx rs6000_return_addr (int, rtx);
145extern void rs6000_output_symbol_ref (FILE*, rtx);
d1d0c603 146extern HOST_WIDE_INT rs6000_initial_elimination_offset (int, int);
565ef4ba
RS		 147extern void rs6000_emit_popcount (rtx, rtx);
148extern void rs6000_emit_parity (rtx, rtx);
a2369ed3 149
ef4bddc2 150extern rtx rs6000_machopic_legitimize_pic_address (rtx, machine_mode,
fa5b0972 151 rtx);
ef4bddc2 152extern rtx rs6000_allocate_stack_temp (machine_mode, bool, bool);
e6de5335 153extern align_flags rs6000_loop_align (rtx);
44c3a8bb 154extern void rs6000_split_logical (rtx [], enum rtx_code, bool, bool, bool);
8c0f8755
BS		 155extern bool rs6000_function_pcrel_p (struct function *);
156extern bool rs6000_pcrel_p (void);
91117603 157extern bool rs6000_fndecl_pcrel_p (const_tree);
26ca7d1b
MM		 158
159/* Different PowerPC instruction formats that are used by GCC. There are
160 various other instruction formats used by the PowerPC hardware, but these
161 formats are not currently used by GCC. */
162
163enum insn_form {
164 INSN_FORM_BAD, /* Bad instruction format. */
165 INSN_FORM_BASE_REG, /* Base register only. */
166 INSN_FORM_D, /* Reg + 16-bit numeric offset. */
167 INSN_FORM_DS, /* Reg + offset, bottom 2 bits must be 0. */
168 INSN_FORM_DQ, /* Reg + offset, bottom 4 bits must be 0. */
169 INSN_FORM_X, /* Base register + index register. */
170 INSN_FORM_UPDATE, /* Address updates base register. */
171 INSN_FORM_LO_SUM, /* Reg + offset using symbol. */
172 INSN_FORM_PREFIXED_NUMERIC, /* Reg + 34 bit numeric offset. */
173 INSN_FORM_PCREL_LOCAL, /* PC-relative local symbol. */
174 INSN_FORM_PCREL_EXTERNAL /* PC-relative external symbol. */
175};
176
177/* Instruction format for the non-prefixed version of a load or store. This is
178 used to determine if a 16-bit offset is valid to be used with a non-prefixed
179 (traditional) instruction or if the bottom bits of the offset cannot be used
180 with a DS or DQ instruction format, and GCC has to use a prefixed
181 instruction for the load or store. */
182
183enum non_prefixed_form {
184 NON_PREFIXED_DEFAULT, /* Use the default. */
185 NON_PREFIXED_D, /* All 16-bits are valid. */
186 NON_PREFIXED_DS, /* Bottom 2 bits must be 0. */
187 NON_PREFIXED_DQ, /* Bottom 4 bits must be 0. */
188 NON_PREFIXED_X /* No offset memory form exists. */
189};
190
191extern enum insn_form address_to_insn_form (rtx, machine_mode,
192 enum non_prefixed_form);
193extern bool prefixed_load_p (rtx_insn *);
194extern bool prefixed_store_p (rtx_insn *);
195extern bool prefixed_paddi_p (rtx_insn *);
196extern void rs6000_asm_output_opcode (FILE *);
197extern void rs6000_final_prescan_insn (rtx_insn *, rtx [], int);
ca06b86c 198extern int rs6000_adjust_insn_length (rtx_insn *, int);
26ca7d1b
MM		 199
200/* Return true if the address can be used for a prefixed load, store, or add
201 immediate instructions that cannot be used with a non-prefixed instruction.
202 For example, using a numeric offset that is not valid for the non-prefixed
203 instruction or a PC-relative reference to a local symbol would return true,
204 but an address with an offset of 64 would not return true.
205
206 References to external PC-relative symbols aren't allowed, because GCC has
207 to load the address into a register and then issue a separate load or
208 store. */
209
210static inline bool
211address_is_prefixed (rtx addr,
212 machine_mode mode,
213 enum non_prefixed_form non_prefixed)
214{
215 enum insn_form iform = address_to_insn_form (addr, mode, non_prefixed);
216 return (iform == INSN_FORM_PREFIXED_NUMERIC
217 || iform == INSN_FORM_PCREL_LOCAL);
218}
9ebbca7d
GK		 219#endif /* RTX_CODE */
220
221#ifdef TREE_CODE
69eff9da 222extern unsigned int rs6000_data_alignment (tree, unsigned int, enum data_align);
98326512 223extern bool rs6000_special_adjust_field_align_p (tree, unsigned int);
fa5b0972
AM		 224extern unsigned int rs6000_special_round_type_align (tree, unsigned int,
225 unsigned int);
58182de3
GK		 226extern unsigned int darwin_rs6000_special_round_type_align (tree, unsigned int,
227 unsigned int);
4b29c5e5 228extern tree altivec_resolve_overloaded_builtin (location_t, tree, void *);
ef4bddc2 229extern rtx rs6000_libcall_value (machine_mode);
9390387d 230extern rtx rs6000_va_arg (tree, tree);
a2369ed3 231extern int function_ok_for_sibcall (tree);
ddbb449f 232extern int rs6000_reg_parm_stack_space (tree, bool);
8d91472f 233extern void rs6000_asm_weaken_decl (FILE *, tree, const char *, const char *);
b36e833f 234extern void rs6000_xcoff_declare_function_name (FILE *, const char *, tree);
9af46873 235extern void rs6000_xcoff_declare_object_name (FILE *, const char *, tree);
8d91472f
DE		 236extern void rs6000_xcoff_asm_output_aligned_decl_common (FILE *, tree,
237 const char *,
238 unsigned HOST_WIDE_INT,
239 unsigned HOST_WIDE_INT);
a2369ed3 240extern void rs6000_elf_declare_function_name (FILE *, const char *, tree);
3101faab 241extern bool rs6000_elf_in_small_data_p (const_tree);
ee890fe2 242
9ebbca7d
GK		 243#endif /* TREE_CODE */
244
a2369ed3 245extern int direct_return (void);
a2369ed3
DJ		 246extern int first_reg_to_save (void);
247extern int first_fp_reg_to_save (void);
a2369ed3
DJ		 248extern void output_ascii (FILE *, const char *, int);
249extern void rs6000_gen_section_name (char **, const char *, const char *);
250extern void output_function_profiler (FILE *, int);
251extern void output_profile_hook (int);
252extern int rs6000_trampoline_size (void);
4862826d 253extern alias_set_type get_TOC_alias_set (void);
a2369ed3
DJ		 254extern void rs6000_emit_prologue (void);
255extern void rs6000_emit_load_toc_table (int);
3d36d470 256extern unsigned int rs6000_dbx_register_number (unsigned int, unsigned int);
a3d59ce9 257extern void rs6000_emit_epilogue (enum epilogue_type);
0f0fd745
AM		 258extern void rs6000_expand_split_stack_prologue (void);
259extern void rs6000_split_stack_space_check (rtx, rtx);
d1d0c603 260extern void rs6000_emit_eh_reg_restore (rtx, rtx);
f90f960c
UW		 261extern void rs6000_call_aix (rtx, rtx, rtx, rtx);
262extern void rs6000_sibcall_aix (rtx, rtx, rtx, rtx);
ece3bca2 263extern void rs6000_call_sysv (rtx, rtx, rtx, rtx);
3f79c0ad 264extern void rs6000_sibcall_sysv (rtx, rtx, rtx, rtx);
aa3a2eca
IS		 265extern void rs6000_call_darwin (rtx, rtx, rtx, rtx);
266extern void rs6000_sibcall_darwin (rtx, rtx, rtx, rtx);
7e49a4b3 267extern void rs6000_aix_asm_output_dwarf_table_ref (char *);
be26142a 268extern void get_ppc476_thunk_name (char name[32]);
7fa14a01 269extern bool rs6000_overloaded_builtin_p (enum rs6000_builtins);
48784b00 270extern bool rs6000_builtin_is_supported_p (enum rs6000_builtins);
e9e6d4f6 271extern const char *rs6000_overloaded_builtin_name (enum rs6000_builtins);
6ba86ba7 272extern int rs6000_store_data_bypass_p (rtx_insn *, rtx_insn *);
b85aed95 273extern HOST_WIDE_INT rs6000_builtin_mask_calculate (void);
e707a2dd
AD		 274extern void rs6000_asm_output_dwarf_pcrel (FILE *file, int size,
275 const char *label);
276extern void rs6000_asm_output_dwarf_datarel (FILE *file, int size,
277 const char *label);
7f3b1997 278extern long long rs6000_const_f32_to_i32 (rtx operand);
7e49a4b3 279
4c4eb375
GK		 280/* Declare functions in rs6000-c.c */
281
a2369ed3
DJ		 282extern void rs6000_pragma_longcall (struct cpp_reader *);
283extern void rs6000_cpu_cpp_builtins (struct cpp_reader *);
fd438373
MM		 284#ifdef TREE_CODE
285extern bool rs6000_pragma_target_parse (tree, tree);
286#endif
20a7e14a 287extern void rs6000_activate_target_options (tree new_tree);
b85aed95
MM		 288extern void rs6000_target_modify_macros (bool, HOST_WIDE_INT, HOST_WIDE_INT);
289extern void (*rs6000_target_modify_macros_ptr) (bool, HOST_WIDE_INT,
290 HOST_WIDE_INT);
a5c76ee6 291
b4c522fa
IB		 292/* Declare functions in rs6000-d.c */
293extern void rs6000_d_target_versions (void);
294
ee06c6a5
DE		 295#ifdef NO_DOLLAR_IN_LABEL
296const char * rs6000_xcoff_strip_dollar (const char *);
297#endif
298
cacf1ca8
MM		 299extern unsigned char rs6000_class_max_nregs[][LIM_REG_CLASSES];
300extern unsigned char rs6000_hard_regno_nregs[][FIRST_PSEUDO_REGISTER];
9193fb05
JM		 301
302extern bool rs6000_linux_float_exceptions_rounding_supported_p (void);
5715e980
BS		 303
304/* Pass management. */
305namespace gcc { class context; }
306class rtl_opt_pass;
307
308extern rtl_opt_pass *make_pass_analyze_swaps (gcc::context *);
a3a821c9
KN		 309extern bool rs6000_sum_of_two_registers_p (const_rtx expr);
310extern bool rs6000_quadword_masked_address_p (const_rtx exp);
311extern rtx rs6000_gen_lvx (enum machine_mode, rtx, rtx);
312extern rtx rs6000_gen_stvx (enum machine_mode, rtx, rtx);
5715e980 313
7f3b1997 314extern void rs6000_emit_xxspltidp_v2df (rtx, long value);
a5c76ee6 315#endif /* rs6000-protos.h */
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