1 | /* Fold a constant sub-tree into a single node for C-compiler |
2 | Copyright (C) 1987-2017 Free Software Foundation, Inc. |
3 | |
4 | This file is part of GCC. |
5 | |
6 | GCC is free software; you can redistribute it and/or modify it under |
7 | the terms of the GNU General Public License as published by the Free |
8 | Software Foundation; either version 3, or (at your option) any later |
9 | version. |
10 | |
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
14 | for more details. |
15 | |
16 | You should have received a copy of the GNU General Public License |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ |
19 | |
20 | #ifndef GCC_FOLD_CONST_H |
21 | #define GCC_FOLD_CONST_H |
22 | |
23 | /* Non-zero if we are folding constants inside an initializer; zero |
24 | otherwise. */ |
25 | extern int folding_initializer; |
26 | |
27 | /* Convert between trees and native memory representation. */ |
28 | extern int native_encode_expr (const_tree, unsigned char *, int, int off = -1); |
29 | extern tree native_interpret_expr (tree, const unsigned char *, int); |
30 | |
31 | /* Fold constants as much as possible in an expression. |
32 | Returns the simplified expression. |
33 | Acts only on the top level of the expression; |
34 | if the argument itself cannot be simplified, its |
35 | subexpressions are not changed. */ |
36 | |
37 | extern tree fold (tree); |
38 | #define fold_unary(CODE,T1,T2)\ |
39 | fold_unary_loc (UNKNOWN_LOCATION, CODE, T1, T2) |
40 | extern tree fold_unary_loc (location_t, enum tree_code, tree, tree); |
41 | #define fold_unary_ignore_overflow(CODE,T1,T2)\ |
42 | fold_unary_ignore_overflow_loc (UNKNOWN_LOCATION, CODE, T1, T2) |
43 | extern tree fold_unary_ignore_overflow_loc (location_t, enum tree_code, tree, tree); |
44 | #define fold_binary(CODE,T1,T2,T3)\ |
45 | fold_binary_loc (UNKNOWN_LOCATION, CODE, T1, T2, T3) |
46 | extern tree fold_binary_loc (location_t, enum tree_code, tree, tree, tree); |
47 | #define fold_ternary(CODE,T1,T2,T3,T4)\ |
48 | fold_ternary_loc (UNKNOWN_LOCATION, CODE, T1, T2, T3, T4) |
49 | extern tree fold_ternary_loc (location_t, enum tree_code, tree, tree, tree, tree); |
50 | #define fold_build1(c,t1,t2)\ |
51 | fold_build1_loc (UNKNOWN_LOCATION, c, t1, t2 MEM_STAT_INFO) |
52 | extern tree fold_build1_loc (location_t, enum tree_code, tree, |
53 | tree CXX_MEM_STAT_INFO); |
54 | #define fold_build2(c,t1,t2,t3)\ |
55 | fold_build2_loc (UNKNOWN_LOCATION, c, t1, t2, t3 MEM_STAT_INFO) |
56 | extern tree fold_build2_loc (location_t, enum tree_code, tree, tree, |
57 | tree CXX_MEM_STAT_INFO); |
58 | #define fold_build3(c,t1,t2,t3,t4)\ |
59 | fold_build3_loc (UNKNOWN_LOCATION, c, t1, t2, t3, t4 MEM_STAT_INFO) |
60 | extern tree fold_build3_loc (location_t, enum tree_code, tree, tree, tree, |
61 | tree CXX_MEM_STAT_INFO); |
62 | extern tree fold_build1_initializer_loc (location_t, enum tree_code, tree, tree); |
63 | extern tree fold_build2_initializer_loc (location_t, enum tree_code, tree, tree, tree); |
64 | #define fold_build_call_array(T1,T2,N,T4)\ |
65 | fold_build_call_array_loc (UNKNOWN_LOCATION, T1, T2, N, T4) |
66 | extern tree fold_build_call_array_loc (location_t, tree, tree, int, tree *); |
67 | #define fold_build_call_array_initializer(T1,T2,N,T4)\ |
68 | fold_build_call_array_initializer_loc (UNKNOWN_LOCATION, T1, T2, N, T4) |
69 | extern tree fold_build_call_array_initializer_loc (location_t, tree, tree, int, tree *); |
70 | extern tree get_array_ctor_element_at_index (tree, offset_int); |
71 | extern bool fold_convertible_p (const_tree, const_tree); |
72 | #define fold_convert(T1,T2)\ |
73 | fold_convert_loc (UNKNOWN_LOCATION, T1, T2) |
74 | extern tree fold_convert_loc (location_t, tree, tree); |
75 | extern tree fold_single_bit_test (location_t, enum tree_code, tree, tree, tree); |
76 | extern tree fold_ignored_result (tree); |
77 | extern tree fold_abs_const (tree, tree); |
78 | extern tree fold_indirect_ref_1 (location_t, tree, tree); |
79 | extern void fold_defer_overflow_warnings (void); |
80 | extern void fold_undefer_overflow_warnings (bool, const gimple *, int); |
81 | extern void fold_undefer_and_ignore_overflow_warnings (void); |
82 | extern bool fold_deferring_overflow_warnings_p (void); |
83 | extern void fold_overflow_warning (const char*, enum warn_strict_overflow_code); |
84 | extern enum tree_code fold_div_compare (enum tree_code, tree, tree, |
85 | tree *, tree *, bool *); |
86 | extern int operand_equal_p (const_tree, const_tree, unsigned int); |
87 | extern int multiple_of_p (tree, const_tree, const_tree); |
88 | #define omit_one_operand(T1,T2,T3)\ |
89 | omit_one_operand_loc (UNKNOWN_LOCATION, T1, T2, T3) |
90 | extern tree omit_one_operand_loc (location_t, tree, tree, tree); |
91 | #define omit_two_operands(T1,T2,T3,T4)\ |
92 | omit_two_operands_loc (UNKNOWN_LOCATION, T1, T2, T3, T4) |
93 | extern tree omit_two_operands_loc (location_t, tree, tree, tree, tree); |
94 | #define invert_truthvalue(T)\ |
95 | invert_truthvalue_loc (UNKNOWN_LOCATION, T) |
96 | extern tree invert_truthvalue_loc (location_t, tree); |
97 | extern tree fold_unary_to_constant (enum tree_code, tree, tree); |
98 | extern tree fold_binary_to_constant (enum tree_code, tree, tree, tree); |
99 | extern tree fold_read_from_constant_string (tree); |
100 | extern tree int_const_binop (enum tree_code, const_tree, const_tree); |
101 | #define build_fold_addr_expr(T)\ |
102 | build_fold_addr_expr_loc (UNKNOWN_LOCATION, (T)) |
103 | extern tree build_fold_addr_expr_loc (location_t, tree); |
104 | #define build_fold_addr_expr_with_type(T,TYPE)\ |
105 | build_fold_addr_expr_with_type_loc (UNKNOWN_LOCATION, (T), TYPE) |
106 | extern tree build_fold_addr_expr_with_type_loc (location_t, tree, tree); |
107 | extern tree fold_build_cleanup_point_expr (tree type, tree expr); |
108 | #define build_fold_indirect_ref(T)\ |
109 | build_fold_indirect_ref_loc (UNKNOWN_LOCATION, T) |
110 | extern tree build_fold_indirect_ref_loc (location_t, tree); |
111 | #define fold_indirect_ref(T)\ |
112 | fold_indirect_ref_loc (UNKNOWN_LOCATION, T) |
113 | extern tree fold_indirect_ref_loc (location_t, tree); |
114 | extern tree build_simple_mem_ref_loc (location_t, tree); |
115 | #define build_simple_mem_ref(T)\ |
116 | build_simple_mem_ref_loc (UNKNOWN_LOCATION, T) |
117 | extern offset_int mem_ref_offset (const_tree); |
118 | extern tree build_invariant_address (tree, tree, HOST_WIDE_INT); |
119 | extern tree constant_boolean_node (bool, tree); |
120 | extern tree div_if_zero_remainder (const_tree, const_tree); |
121 | |
122 | extern bool tree_swap_operands_p (const_tree, const_tree); |
123 | extern enum tree_code swap_tree_comparison (enum tree_code); |
124 | |
125 | extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *); |
126 | extern enum tree_code invert_tree_comparison (enum tree_code, bool); |
127 | |
128 | extern bool tree_unary_nonzero_warnv_p (enum tree_code, tree, tree, bool *); |
129 | extern bool tree_binary_nonzero_warnv_p (enum tree_code, tree, tree, tree op1, |
130 | bool *); |
131 | extern bool tree_single_nonzero_warnv_p (tree, bool *); |
132 | extern bool tree_unary_nonnegative_warnv_p (enum tree_code, tree, tree, |
133 | bool *, int); |
134 | extern bool tree_binary_nonnegative_warnv_p (enum tree_code, tree, tree, tree, |
135 | bool *, int); |
136 | extern bool tree_single_nonnegative_warnv_p (tree, bool *, int); |
137 | extern bool tree_call_nonnegative_warnv_p (tree, combined_fn, tree, tree, |
138 | bool *, int); |
139 | |
140 | extern bool integer_valued_real_unary_p (tree_code, tree, int); |
141 | extern bool integer_valued_real_binary_p (tree_code, tree, tree, int); |
142 | extern bool integer_valued_real_call_p (combined_fn, tree, tree, int); |
143 | extern bool integer_valued_real_single_p (tree, int); |
144 | extern bool integer_valued_real_p (tree, int = 0); |
145 | |
146 | extern bool fold_real_zero_addition_p (const_tree, const_tree, int); |
147 | extern tree combine_comparisons (location_t, enum tree_code, enum tree_code, |
148 | enum tree_code, tree, tree, tree); |
149 | extern void debug_fold_checksum (const_tree); |
150 | extern bool may_negate_without_overflow_p (const_tree); |
151 | #define round_up(T,N) round_up_loc (UNKNOWN_LOCATION, T, N) |
152 | extern tree round_up_loc (location_t, tree, unsigned int); |
153 | #define round_down(T,N) round_down_loc (UNKNOWN_LOCATION, T, N) |
154 | extern tree round_down_loc (location_t, tree, int); |
155 | extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind); |
156 | #define size_binop(CODE,T1,T2)\ |
157 | size_binop_loc (UNKNOWN_LOCATION, CODE, T1, T2) |
158 | extern tree size_binop_loc (location_t, enum tree_code, tree, tree); |
159 | #define size_diffop(T1,T2)\ |
160 | size_diffop_loc (UNKNOWN_LOCATION, T1, T2) |
161 | extern tree size_diffop_loc (location_t, tree, tree); |
162 | |
163 | /* Return an expr equal to X but certainly not valid as an lvalue. */ |
164 | #define non_lvalue(T) non_lvalue_loc (UNKNOWN_LOCATION, T) |
165 | extern tree non_lvalue_loc (location_t, tree); |
166 | |
167 | extern bool tree_expr_nonzero_p (tree); |
168 | extern bool tree_expr_nonnegative_p (tree); |
169 | extern bool tree_expr_nonnegative_warnv_p (tree, bool *, int = 0); |
170 | extern tree make_range (tree, int *, tree *, tree *, bool *); |
171 | extern tree make_range_step (location_t, enum tree_code, tree, tree, tree, |
172 | tree *, tree *, int *, bool *); |
173 | extern tree range_check_type (tree); |
174 | extern tree build_range_check (location_t, tree, tree, int, tree, tree); |
175 | extern bool merge_ranges (int *, tree *, tree *, int, tree, tree, int, |
176 | tree, tree); |
177 | extern tree sign_bit_p (tree, const_tree); |
178 | extern tree exact_inverse (tree, tree); |
179 | extern bool expr_not_equal_to (tree t, const wide_int &); |
180 | extern tree const_unop (enum tree_code, tree, tree); |
181 | extern tree const_binop (enum tree_code, tree, tree, tree); |
182 | extern bool negate_mathfn_p (combined_fn); |
183 | extern const char *c_getstr (tree, unsigned HOST_WIDE_INT *strlen = NULL); |
184 | |
185 | /* Return OFF converted to a pointer offset type suitable as offset for |
186 | POINTER_PLUS_EXPR. Use location LOC for this conversion. */ |
187 | extern tree convert_to_ptrofftype_loc (location_t loc, tree off); |
188 | |
189 | #define convert_to_ptrofftype(t) convert_to_ptrofftype_loc (UNKNOWN_LOCATION, t) |
190 | |
191 | /* Build and fold a POINTER_PLUS_EXPR at LOC offsetting PTR by OFF. */ |
192 | extern tree fold_build_pointer_plus_loc (location_t loc, tree ptr, tree off); |
193 | |
194 | #define fold_build_pointer_plus(p,o) \ |
195 | fold_build_pointer_plus_loc (UNKNOWN_LOCATION, p, o) |
196 | |
197 | /* Build and fold a POINTER_PLUS_EXPR at LOC offsetting PTR by OFF. */ |
198 | extern tree fold_build_pointer_plus_hwi_loc (location_t loc, tree ptr, HOST_WIDE_INT off); |
199 | |
200 | #define fold_build_pointer_plus_hwi(p,o) \ |
201 | fold_build_pointer_plus_hwi_loc (UNKNOWN_LOCATION, p, o) |
202 | #endif // GCC_FOLD_CONST_H |
203 | |