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comparison gcc/fold-const.h @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900 (2017-10-27)
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
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