1 /* Definitions of target machine for GNU compiler, for IBM S/390.
2 Copyright (C) 2000-2023 Free Software Foundation, Inc.
3
4 Contributed by Hartmut Penner (hpenner@de.ibm.com)
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
12
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 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
23
24 /* Prototypes of functions used for constraint evaluation in
25 constraints.c. */
26
27 extern int s390_mem_constraint (const char *str, rtx op);
28 extern int s390_O_constraint_str (const char c, HOST_WIDE_INT value);
29 extern int s390_N_constraint_str (const char *str, HOST_WIDE_INT value);
30 extern int s390_float_const_zero_p (rtx value);
31 extern bool s390_check_symref_alignment (rtx addr, HOST_WIDE_INT alignment);
32
33
34 /* In s390-common.cc. */
35 extern bool s390_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED,
36 struct gcc_options *opts_set ATTRIBUTE_UNUSED,
37 const struct cl_decoded_option *decoded,
38 location_t loc);
39
40 /* Declare functions in s390.cc. */
41
42 extern HOST_WIDE_INT s390_initial_elimination_offset (int, int);
43 extern void s390_emit_prologue (void);
44 extern void s390_emit_epilogue (bool);
45 extern void s390_expand_split_stack_prologue (void);
46 extern bool s390_can_use_simple_return_insn (void);
47 extern bool s390_can_use_return_insn (void);
48 extern void s390_function_profiler (FILE *, int);
49 extern void s390_set_has_landing_pad_p (bool);
50 extern bool s390_hard_regno_rename_ok (unsigned int, unsigned int);
51 extern int s390_class_max_nregs (enum reg_class, machine_mode);
52 extern bool s390_return_addr_from_memory(void);
53 extern rtx s390_gen_lowpart_subreg (machine_mode, rtx);
54 extern bool s390_fma_allowed_p (machine_mode);
55 #if S390_USE_TARGET_ATTRIBUTE
56 extern tree s390_valid_target_attribute_tree (tree args,
57 struct gcc_options *opts,
58 const struct gcc_options
59 *opts_set, bool is_pragma);
60 extern void s390_activate_target_options (tree new_tree);
61 extern void
62 s390_asm_output_function_prefix (FILE *asm_out_file,
63 const char *fnname ATTRIBUTE_UNUSED);
64 extern void
65 s390_asm_declare_function_size (FILE *asm_out_file,
66 const char *fnname ATTRIBUTE_UNUSED, tree decl);
67 #endif
68
69 extern void s390_rawmemchr (machine_mode elt_mode, rtx dst, rtx src, rtx pat);
70
71 #ifdef RTX_CODE
72 extern int s390_extra_constraint_str (rtx, int, const char *);
73 extern int s390_const_ok_for_constraint_p (HOST_WIDE_INT, int, const char *);
74 extern int s390_const_double_ok_for_constraint_p (rtx, int, const char *);
75 extern int s390_single_part (rtx, machine_mode, machine_mode, int);
76 extern unsigned HOST_WIDE_INT s390_extract_part (rtx, machine_mode, int);
77 extern bool s390_contiguous_bitmask_p (unsigned HOST_WIDE_INT, bool, int, int *, int *);
78 extern bool s390_contiguous_bitmask_vector_p (rtx, int *, int *);
79 extern bool s390_bytemask_vector_p (rtx, unsigned *);
80 extern bool s390_split_ok_p (rtx, rtx, machine_mode, int);
81 extern bool s390_overlap_p (rtx, rtx, HOST_WIDE_INT);
82 extern bool s390_offset_p (rtx, rtx, rtx);
83 extern bool s390_rel_address_ok_p (rtx);
84 extern int tls_symbolic_operand (rtx);
85
86 extern bool s390_match_ccmode (rtx_insn *, machine_mode);
87 extern machine_mode s390_tm_ccmode (rtx, rtx, bool);
88 extern machine_mode s390_select_ccmode (enum rtx_code, rtx, rtx);
89 extern rtx s390_emit_compare (enum rtx_code, rtx, rtx);
90 extern rtx_insn *s390_emit_jump (rtx, rtx);
91 extern bool symbolic_reference_mentioned_p (rtx);
92 extern bool tls_symbolic_reference_mentioned_p (rtx);
93 extern bool legitimate_la_operand_p (rtx);
94 extern bool preferred_la_operand_p (rtx, rtx);
95 extern int legitimate_pic_operand_p (rtx);
96 extern bool legitimate_reload_constant_p (rtx);
97 extern rtx legitimize_pic_address (rtx, rtx);
98 extern rtx legitimize_reload_address (rtx, machine_mode, int, int);
99 extern enum reg_class s390_secondary_input_reload_class (enum reg_class,
100 machine_mode,
101 rtx);
102 extern enum reg_class s390_secondary_output_reload_class (enum reg_class,
103 machine_mode,
104 rtx);
105 extern void s390_reload_larl_operand (rtx , rtx , rtx);
106 extern void s390_reload_symref_address (rtx , rtx , rtx , bool);
107 extern void s390_expand_plus_operand (rtx, rtx, rtx);
108 extern void emit_symbolic_move (rtx *);
109 extern void s390_load_address (rtx, rtx);
110 extern bool s390_expand_cpymem (rtx, rtx, rtx);
111 extern void s390_expand_setmem (rtx, rtx, rtx);
112 extern bool s390_expand_cmpmem (rtx, rtx, rtx, rtx);
113 extern void s390_expand_vec_strlen (rtx, rtx, rtx);
114 extern void s390_expand_vec_movstr (rtx, rtx, rtx);
115 extern bool s390_expand_addcc (enum rtx_code, rtx, rtx, rtx, rtx, rtx);
116 extern bool s390_expand_insv (rtx, rtx, rtx, rtx);
117 extern void s390_expand_cs (machine_mode, rtx, rtx, rtx, rtx, rtx, bool);
118 extern void s390_expand_atomic_exchange_tdsi (rtx, rtx, rtx);
119 extern void s390_expand_atomic (machine_mode, enum rtx_code,
120 rtx, rtx, rtx, bool);
121 extern void s390_expand_tbegin (rtx, rtx, rtx, bool);
122 extern void s390_expand_vec_compare (rtx, enum rtx_code, rtx, rtx);
123 extern void s390_expand_vec_compare_cc (rtx, enum rtx_code, rtx, rtx, bool);
124 extern enum rtx_code s390_reverse_condition (machine_mode, enum rtx_code);
125 extern void s390_expand_vcond (rtx, rtx, rtx, enum rtx_code, rtx, rtx);
126 extern void s390_expand_vec_init (rtx, rtx);
127 extern rtx s390_expand_merge_perm_const (machine_mode, bool);
128 extern void s390_expand_merge (rtx, rtx, rtx, bool);
129 extern rtx s390_build_signbit_mask (machine_mode);
130 extern rtx s390_return_addr_rtx (int, rtx);
131 extern rtx s390_back_chain_rtx (void);
132 extern rtx_insn *s390_emit_call (rtx, rtx, rtx, rtx);
133 extern void s390_expand_logical_operator (enum rtx_code,
134 machine_mode, rtx *);
135 extern bool s390_logical_operator_ok_p (rtx *);
136 extern void s390_narrow_logical_operator (enum rtx_code, rtx *, rtx *);
137 extern void s390_split_access_reg (rtx, rtx *, rtx *);
138
139 extern void print_operand_address (FILE *, rtx);
140 extern void print_operand (FILE *, rtx, int);
141 extern void s390_output_pool_entry (rtx, machine_mode, unsigned int);
142 extern bool s390_const_int_pool_entry_p (rtx, HOST_WIDE_INT *);
143 extern int s390_label_align (rtx_insn *);
144 extern int s390_agen_dep_p (rtx_insn *, rtx_insn *);
145 extern rtx_insn *s390_load_got (void);
146 extern rtx s390_get_thread_pointer (void);
147 extern void s390_emit_tpf_eh_return (rtx);
148 extern bool s390_legitimate_address_without_index_p (rtx);
149 extern bool s390_decompose_addrstyle_without_index (rtx, rtx *,
150 HOST_WIDE_INT *);
151 extern bool s390_valid_shift_count (rtx op, HOST_WIDE_INT required_mask = 63);
152 extern int s390_branch_condition_mask (rtx);
153 extern int s390_compare_and_branch_condition_mask (rtx);
154 extern bool s390_extzv_shift_ok (int, int, unsigned HOST_WIDE_INT);
155 extern void s390_asm_output_function_label (FILE *, const char *, tree);
156 extern void s390_output_split_stack_data (rtx, rtx, rtx, rtx);
157
158 enum s390_indirect_branch_type
159 {
160 s390_indirect_branch_type_jump = 0,
161 s390_indirect_branch_type_call,
162 s390_indirect_branch_type_return
163 };
164 extern void s390_indirect_branch_via_thunk (unsigned int regno,
165 unsigned int return_addr_regno,
166 rtx comparison_operator,
167 enum s390_indirect_branch_type type);
168 extern void s390_indirect_branch_via_inline_thunk (rtx execute_target);
169 #endif /* RTX_CODE */
170
171 /* s390-c.cc routines */
172 extern void s390_cpu_cpp_builtins (struct cpp_reader *);
173 extern void s390_register_target_pragmas (void);
174
175 /* Routines for s390-c.cc */
176 extern bool s390_const_operand_ok (tree, int, int, tree);
177
178 /* Pass management. */
179 namespace gcc { class context; }
180 class rtl_opt_pass;
181
182 extern rtl_opt_pass *make_pass_s390_early_mach (gcc::context *ctxt);