Daily bump.
[official-gcc.git] / gcc / fold-const.h
blob7abf4d1bc06b4e3eb9d5f427fd8e4dc1de12ab2d
1 /* Fold a constant sub-tree into a single node for C-compiler
2 Copyright (C) 1987-2017 Free Software Foundation, Inc.
4 This file is part of GCC.
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.
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.
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/>. */
20 #ifndef GCC_FOLD_CONST_H
21 #define GCC_FOLD_CONST_H
23 /* Non-zero if we are folding constants inside an initializer; zero
24 otherwise. */
25 extern int folding_initializer;
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 extern bool can_native_encode_type_p (tree);
32 /* Fold constants as much as possible in an expression.
33 Returns the simplified expression.
34 Acts only on the top level of the expression;
35 if the argument itself cannot be simplified, its
36 subexpressions are not changed. */
38 extern tree fold (tree);
39 #define fold_unary(CODE,T1,T2)\
40 fold_unary_loc (UNKNOWN_LOCATION, CODE, T1, T2)
41 extern tree fold_unary_loc (location_t, enum tree_code, tree, tree);
42 #define fold_unary_ignore_overflow(CODE,T1,T2)\
43 fold_unary_ignore_overflow_loc (UNKNOWN_LOCATION, CODE, T1, T2)
44 extern tree fold_unary_ignore_overflow_loc (location_t, enum tree_code, tree, tree);
45 #define fold_binary(CODE,T1,T2,T3)\
46 fold_binary_loc (UNKNOWN_LOCATION, CODE, T1, T2, T3)
47 extern tree fold_binary_loc (location_t, enum tree_code, tree, tree, tree);
48 #define fold_ternary(CODE,T1,T2,T3,T4)\
49 fold_ternary_loc (UNKNOWN_LOCATION, CODE, T1, T2, T3, T4)
50 extern tree fold_ternary_loc (location_t, enum tree_code, tree, tree, tree, tree);
51 #define fold_build1(c,t1,t2)\
52 fold_build1_stat_loc (UNKNOWN_LOCATION, c, t1, t2 MEM_STAT_INFO)
53 #define fold_build1_loc(l,c,t1,t2)\
54 fold_build1_stat_loc (l, c, t1, t2 MEM_STAT_INFO)
55 extern tree fold_build1_stat_loc (location_t, enum tree_code, tree,
56 tree MEM_STAT_DECL);
57 #define fold_build2(c,t1,t2,t3)\
58 fold_build2_stat_loc (UNKNOWN_LOCATION, c, t1, t2, t3 MEM_STAT_INFO)
59 #define fold_build2_loc(l,c,t1,t2,t3)\
60 fold_build2_stat_loc (l, c, t1, t2, t3 MEM_STAT_INFO)
61 extern tree fold_build2_stat_loc (location_t, enum tree_code, tree, tree,
62 tree MEM_STAT_DECL);
63 #define fold_build3(c,t1,t2,t3,t4)\
64 fold_build3_stat_loc (UNKNOWN_LOCATION, c, t1, t2, t3, t4 MEM_STAT_INFO)
65 #define fold_build3_loc(l,c,t1,t2,t3,t4)\
66 fold_build3_stat_loc (l, c, t1, t2, t3, t4 MEM_STAT_INFO)
67 extern tree fold_build3_stat_loc (location_t, enum tree_code, tree, tree, tree,
68 tree MEM_STAT_DECL);
69 extern tree fold_build1_initializer_loc (location_t, enum tree_code, tree, tree);
70 extern tree fold_build2_initializer_loc (location_t, enum tree_code, tree, tree, tree);
71 #define fold_build_call_array(T1,T2,N,T4)\
72 fold_build_call_array_loc (UNKNOWN_LOCATION, T1, T2, N, T4)
73 extern tree fold_build_call_array_loc (location_t, tree, tree, int, tree *);
74 #define fold_build_call_array_initializer(T1,T2,N,T4)\
75 fold_build_call_array_initializer_loc (UNKNOWN_LOCATION, T1, T2, N, T4)
76 extern tree fold_build_call_array_initializer_loc (location_t, tree, tree, int, tree *);
77 extern tree get_array_ctor_element_at_index (tree, offset_int);
78 extern bool fold_convertible_p (const_tree, const_tree);
79 #define fold_convert(T1,T2)\
80 fold_convert_loc (UNKNOWN_LOCATION, T1, T2)
81 extern tree fold_convert_loc (location_t, tree, tree);
82 extern tree fold_single_bit_test (location_t, enum tree_code, tree, tree, tree);
83 extern tree fold_ignored_result (tree);
84 extern tree fold_abs_const (tree, tree);
85 extern tree fold_indirect_ref_1 (location_t, tree, tree);
86 extern void fold_defer_overflow_warnings (void);
87 extern void fold_undefer_overflow_warnings (bool, const gimple *, int);
88 extern void fold_undefer_and_ignore_overflow_warnings (void);
89 extern bool fold_deferring_overflow_warnings_p (void);
90 extern void fold_overflow_warning (const char*, enum warn_strict_overflow_code);
91 extern int operand_equal_p (const_tree, const_tree, unsigned int);
92 extern int multiple_of_p (tree, const_tree, const_tree);
93 #define omit_one_operand(T1,T2,T3)\
94 omit_one_operand_loc (UNKNOWN_LOCATION, T1, T2, T3)
95 extern tree omit_one_operand_loc (location_t, tree, tree, tree);
96 #define omit_two_operands(T1,T2,T3,T4)\
97 omit_two_operands_loc (UNKNOWN_LOCATION, T1, T2, T3, T4)
98 extern tree omit_two_operands_loc (location_t, tree, tree, tree, tree);
99 #define invert_truthvalue(T)\
100 invert_truthvalue_loc (UNKNOWN_LOCATION, T)
101 extern tree invert_truthvalue_loc (location_t, tree);
102 extern tree fold_unary_to_constant (enum tree_code, tree, tree);
103 extern tree fold_binary_to_constant (enum tree_code, tree, tree, tree);
104 extern tree fold_read_from_constant_string (tree);
105 extern tree int_const_binop (enum tree_code, const_tree, const_tree);
106 #define build_fold_addr_expr(T)\
107 build_fold_addr_expr_loc (UNKNOWN_LOCATION, (T))
108 extern tree build_fold_addr_expr_loc (location_t, tree);
109 #define build_fold_addr_expr_with_type(T,TYPE)\
110 build_fold_addr_expr_with_type_loc (UNKNOWN_LOCATION, (T), TYPE)
111 extern tree build_fold_addr_expr_with_type_loc (location_t, tree, tree);
112 extern tree fold_build_cleanup_point_expr (tree type, tree expr);
113 #define build_fold_indirect_ref(T)\
114 build_fold_indirect_ref_loc (UNKNOWN_LOCATION, T)
115 extern tree build_fold_indirect_ref_loc (location_t, tree);
116 #define fold_indirect_ref(T)\
117 fold_indirect_ref_loc (UNKNOWN_LOCATION, T)
118 extern tree fold_indirect_ref_loc (location_t, tree);
119 extern tree build_simple_mem_ref_loc (location_t, tree);
120 #define build_simple_mem_ref(T)\
121 build_simple_mem_ref_loc (UNKNOWN_LOCATION, T)
122 extern offset_int mem_ref_offset (const_tree);
123 extern tree build_invariant_address (tree, tree, HOST_WIDE_INT);
124 extern tree constant_boolean_node (bool, tree);
125 extern tree div_if_zero_remainder (const_tree, const_tree);
127 extern bool tree_swap_operands_p (const_tree, const_tree);
128 extern enum tree_code swap_tree_comparison (enum tree_code);
130 extern bool ptr_difference_const (tree, tree, HOST_WIDE_INT *);
131 extern enum tree_code invert_tree_comparison (enum tree_code, bool);
133 extern bool tree_unary_nonzero_warnv_p (enum tree_code, tree, tree, bool *);
134 extern bool tree_binary_nonzero_warnv_p (enum tree_code, tree, tree, tree op1,
135 bool *);
136 extern bool tree_single_nonzero_warnv_p (tree, bool *);
137 extern bool tree_unary_nonnegative_warnv_p (enum tree_code, tree, tree,
138 bool *, int);
139 extern bool tree_binary_nonnegative_warnv_p (enum tree_code, tree, tree, tree,
140 bool *, int);
141 extern bool tree_single_nonnegative_warnv_p (tree, bool *, int);
142 extern bool tree_call_nonnegative_warnv_p (tree, combined_fn, tree, tree,
143 bool *, int);
145 extern bool integer_valued_real_unary_p (tree_code, tree, int);
146 extern bool integer_valued_real_binary_p (tree_code, tree, tree, int);
147 extern bool integer_valued_real_call_p (combined_fn, tree, tree, int);
148 extern bool integer_valued_real_single_p (tree, int);
149 extern bool integer_valued_real_p (tree, int = 0);
151 extern bool fold_real_zero_addition_p (const_tree, const_tree, int);
152 extern tree combine_comparisons (location_t, enum tree_code, enum tree_code,
153 enum tree_code, tree, tree, tree);
154 extern void debug_fold_checksum (const_tree);
155 extern bool may_negate_without_overflow_p (const_tree);
156 #define round_up(T,N) round_up_loc (UNKNOWN_LOCATION, T, N)
157 extern tree round_up_loc (location_t, tree, unsigned int);
158 #define round_down(T,N) round_down_loc (UNKNOWN_LOCATION, T, N)
159 extern tree round_down_loc (location_t, tree, int);
160 extern tree size_int_kind (HOST_WIDE_INT, enum size_type_kind);
161 #define size_binop(CODE,T1,T2)\
162 size_binop_loc (UNKNOWN_LOCATION, CODE, T1, T2)
163 extern tree size_binop_loc (location_t, enum tree_code, tree, tree);
164 #define size_diffop(T1,T2)\
165 size_diffop_loc (UNKNOWN_LOCATION, T1, T2)
166 extern tree size_diffop_loc (location_t, tree, tree);
168 /* Return an expr equal to X but certainly not valid as an lvalue. */
169 #define non_lvalue(T) non_lvalue_loc (UNKNOWN_LOCATION, T)
170 extern tree non_lvalue_loc (location_t, tree);
172 extern bool tree_expr_nonzero_p (tree);
173 extern bool tree_expr_nonnegative_p (tree);
174 extern bool tree_expr_nonnegative_warnv_p (tree, bool *, int = 0);
175 extern tree make_range (tree, int *, tree *, tree *, bool *);
176 extern tree make_range_step (location_t, enum tree_code, tree, tree, tree,
177 tree *, tree *, int *, bool *);
178 extern tree build_range_check (location_t, tree, tree, int, tree, tree);
179 extern bool merge_ranges (int *, tree *, tree *, int, tree, tree, int,
180 tree, tree);
181 extern tree sign_bit_p (tree, const_tree);
182 extern tree exact_inverse (tree, tree);
183 extern bool expr_not_equal_to (tree t, const wide_int &);
184 extern tree const_unop (enum tree_code, tree, tree);
185 extern tree const_binop (enum tree_code, tree, tree, tree);
186 extern bool negate_mathfn_p (combined_fn);
187 extern const char *c_getstr (tree, unsigned HOST_WIDE_INT *strlen = NULL);
189 /* Return OFF converted to a pointer offset type suitable as offset for
190 POINTER_PLUS_EXPR. Use location LOC for this conversion. */
191 extern tree convert_to_ptrofftype_loc (location_t loc, tree off);
193 #define convert_to_ptrofftype(t) convert_to_ptrofftype_loc (UNKNOWN_LOCATION, t)
195 /* Build and fold a POINTER_PLUS_EXPR at LOC offsetting PTR by OFF. */
196 extern tree fold_build_pointer_plus_loc (location_t loc, tree ptr, tree off);
198 #define fold_build_pointer_plus(p,o) \
199 fold_build_pointer_plus_loc (UNKNOWN_LOCATION, p, o)
201 /* Build and fold a POINTER_PLUS_EXPR at LOC offsetting PTR by OFF. */
202 extern tree fold_build_pointer_plus_hwi_loc (location_t loc, tree ptr, HOST_WIDE_INT off);
204 #define fold_build_pointer_plus_hwi(p,o) \
205 fold_build_pointer_plus_hwi_loc (UNKNOWN_LOCATION, p, o)
206 #endif // GCC_FOLD_CONST_H