Line data Source code
1 : /* Data type conversion
2 : Copyright (C) 1987-2026 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 :
21 : /* This file contains the functions for converting expressions to
22 : different data types for the translation of the gfortran internal
23 : representation to GIMPLE. The only entry point is `convert'. */
24 :
25 : #include "config.h"
26 : #include "system.h"
27 : #include "coretypes.h"
28 : #include "tree.h"
29 : #include "fold-const.h"
30 : #include "convert.h"
31 :
32 : #include "gfortran.h"
33 : #include "trans.h"
34 : #include "trans-types.h"
35 :
36 : /* Prepare expr to be an argument of a TRUTH_NOT_EXPR,
37 : or validate its data type for a GIMPLE `if' or `while' statement.
38 :
39 : The resulting type should always be `logical_type_node'. */
40 :
41 : static tree
42 80755 : truthvalue_conversion (tree expr)
43 : {
44 80755 : switch (TREE_CODE (TREE_TYPE (expr)))
45 : {
46 78621 : case BOOLEAN_TYPE:
47 78621 : if (TREE_TYPE (expr) == logical_type_node)
48 : return expr;
49 76532 : else if (COMPARISON_CLASS_P (expr))
50 : {
51 0 : TREE_TYPE (expr) = logical_type_node;
52 0 : return expr;
53 : }
54 76532 : else if (TREE_CODE (expr) == NOP_EXPR)
55 9 : return fold_build1_loc (input_location, NOP_EXPR,
56 : logical_type_node,
57 18 : TREE_OPERAND (expr, 0));
58 : else
59 76523 : return fold_build1_loc (input_location, NOP_EXPR,
60 : logical_type_node,
61 76523 : expr);
62 :
63 2134 : case INTEGER_TYPE:
64 2134 : if (TREE_CODE (expr) == INTEGER_CST)
65 0 : return integer_zerop (expr) ? logical_false_node
66 0 : : logical_true_node;
67 : else
68 2134 : return fold_build2_loc (input_location, NE_EXPR,
69 : logical_type_node,
70 2134 : expr, build_int_cst (TREE_TYPE (expr), 0));
71 :
72 0 : default:
73 0 : gcc_unreachable ();
74 : }
75 : }
76 :
77 : /* Create an expression whose value is that of EXPR,
78 : converted to type TYPE. The TREE_TYPE of the value
79 : is always TYPE. This function implements all reasonable
80 : conversions; callers should filter out those that are
81 : not permitted by the language being compiled. */
82 :
83 : tree
84 1110728 : convert (tree type, tree expr)
85 : {
86 1110728 : tree e = expr;
87 1110728 : enum tree_code code;
88 :
89 1110728 : if (type == TREE_TYPE (expr))
90 : return expr;
91 :
92 628930 : if (TREE_CODE (type) == ERROR_MARK
93 628930 : || TREE_CODE (expr) == ERROR_MARK
94 1257860 : || TREE_CODE (TREE_TYPE (expr)) == ERROR_MARK)
95 : return expr;
96 :
97 628930 : gcc_checking_assert (TREE_CODE (TREE_TYPE (expr)) != VOID_TYPE);
98 :
99 628930 : if (TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (TREE_TYPE (expr)))
100 5294 : return fold_build1_loc (input_location, NOP_EXPR, type, expr);
101 :
102 623636 : code = TREE_CODE (type);
103 623636 : if (code == VOID_TYPE)
104 0 : return fold_build1_loc (input_location, CONVERT_EXPR, type, e);
105 : if (code == BOOLEAN_TYPE)
106 80755 : return fold_build1_loc (input_location, NOP_EXPR, type,
107 80755 : truthvalue_conversion (e));
108 : if (code == INTEGER_TYPE)
109 317833 : return fold (convert_to_integer (type, e));
110 : if (code == POINTER_TYPE || code == REFERENCE_TYPE)
111 211962 : return fold (convert_to_pointer (type, e));
112 : if (code == REAL_TYPE)
113 11765 : return fold (convert_to_real (type, e));
114 : if (code == COMPLEX_TYPE)
115 1321 : return fold (convert_to_complex (type, e));
116 : if (code == VECTOR_TYPE)
117 0 : return fold (convert_to_vector (type, e));
118 :
119 0 : gcc_unreachable ();
120 : }
121 :
|
