1 /* Built-in and inline functions for gcj
2 Copyright (C) 2001, 2003, 2004, 2005
3 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA.
22 Java and all Java-based marks are trademarks or registered trademarks
23 of Sun Microsystems, Inc. in the United States and other countries.
24 The Free Software Foundation is independent of Sun Microsystems, Inc. */
26 /* Written by Tom Tromey <tromey@redhat.com>. */
30 #include "coretypes.h"
35 #include "langhooks.h"
36 #include "java-tree.h"
39 static tree max_builtin (tree, tree);
40 static tree min_builtin (tree, tree);
41 static tree abs_builtin (tree, tree);
43 static tree java_build_function_call_expr (tree, tree);
47 /* Functions of this type are used to inline a given call. Such a
48 function should either return an expression, if the call is to be
49 inlined, or NULL_TREE if a real call should be emitted. Arguments
50 are method return type and arguments to call. */
51 typedef tree builtin_creator_function (tree, tree);
53 /* Hold a char*, before initialization, or a tree, after
55 union string_or_tree GTY(())
57 const char * GTY ((tag ("0"))) s;
58 tree GTY ((tag ("1"))) t;
61 /* Used to hold a single builtin record. */
62 struct builtin_record GTY(())
64 union string_or_tree GTY ((desc ("1"))) class_name;
65 union string_or_tree GTY ((desc ("1"))) method_name;
66 builtin_creator_function * GTY((skip)) creator;
67 enum built_in_function builtin_code;
70 static GTY(()) struct builtin_record java_builtins[] =
72 { { "java.lang.Math" }, { "min" }, min_builtin, 0 },
73 { { "java.lang.Math" }, { "max" }, max_builtin, 0 },
74 { { "java.lang.Math" }, { "abs" }, abs_builtin, 0 },
75 { { "java.lang.Math" }, { "acos" }, NULL, BUILT_IN_ACOS },
76 { { "java.lang.Math" }, { "asin" }, NULL, BUILT_IN_ASIN },
77 { { "java.lang.Math" }, { "atan" }, NULL, BUILT_IN_ATAN },
78 { { "java.lang.Math" }, { "atan2" }, NULL, BUILT_IN_ATAN2 },
79 { { "java.lang.Math" }, { "ceil" }, NULL, BUILT_IN_CEIL },
80 { { "java.lang.Math" }, { "cos" }, NULL, BUILT_IN_COS },
81 { { "java.lang.Math" }, { "exp" }, NULL, BUILT_IN_EXP },
82 { { "java.lang.Math" }, { "floor" }, NULL, BUILT_IN_FLOOR },
83 { { "java.lang.Math" }, { "log" }, NULL, BUILT_IN_LOG },
84 { { "java.lang.Math" }, { "pow" }, NULL, BUILT_IN_POW },
85 { { "java.lang.Math" }, { "sin" }, NULL, BUILT_IN_SIN },
86 { { "java.lang.Math" }, { "sqrt" }, NULL, BUILT_IN_SQRT },
87 { { "java.lang.Math" }, { "tan" }, NULL, BUILT_IN_TAN },
88 { { NULL }, { NULL }, NULL, END_BUILTINS }
92 /* Internal functions which implement various builtin conversions. */
95 max_builtin (tree method_return_type, tree method_arguments)
97 return fold (build2 (MAX_EXPR, method_return_type,
98 TREE_VALUE (method_arguments),
99 TREE_VALUE (TREE_CHAIN (method_arguments))));
103 min_builtin (tree method_return_type, tree method_arguments)
105 return fold (build2 (MIN_EXPR, method_return_type,
106 TREE_VALUE (method_arguments),
107 TREE_VALUE (TREE_CHAIN (method_arguments))));
111 abs_builtin (tree method_return_type, tree method_arguments)
113 return fold (build1 (ABS_EXPR, method_return_type,
114 TREE_VALUE (method_arguments)));
117 /* Mostly copied from ../builtins.c. */
119 java_build_function_call_expr (tree fn, tree arglist)
123 call_expr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (fn)), fn);
124 call_expr = build3 (CALL_EXPR, TREE_TYPE (TREE_TYPE (fn)),
125 call_expr, arglist, NULL_TREE);
126 TREE_SIDE_EFFECTS (call_expr) = 1;
127 return fold (call_expr);
132 #define BUILTIN_NOTHROW 1
133 #define BUILTIN_CONST 2
134 /* Define a single builtin. */
136 define_builtin (enum built_in_function val,
144 decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
145 DECL_EXTERNAL (decl) = 1;
146 TREE_PUBLIC (decl) = 1;
147 SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname));
149 DECL_BUILT_IN_CLASS (decl) = BUILT_IN_NORMAL;
150 DECL_FUNCTION_CODE (decl) = val;
151 if (flags & BUILTIN_NOTHROW)
152 TREE_NOTHROW (decl) = 1;
153 if (flags & BUILTIN_CONST)
154 TREE_READONLY (decl) = 1;
156 implicit_built_in_decls[val] = decl;
157 built_in_decls[val] = decl;
162 /* Initialize the builtins. */
164 initialize_builtins (void)
166 tree double_ftype_double, double_ftype_double_double;
167 tree float_ftype_float, float_ftype_float_float;
168 tree boolean_ftype_boolean_boolean;
172 for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
174 tree klass_id = get_identifier (java_builtins[i].class_name.s);
175 tree m = get_identifier (java_builtins[i].method_name.s);
177 java_builtins[i].class_name.t = klass_id;
178 java_builtins[i].method_name.t = m;
181 void_list_node = end_params_node;
183 t = tree_cons (NULL_TREE, float_type_node, end_params_node);
184 float_ftype_float = build_function_type (float_type_node, t);
185 t = tree_cons (NULL_TREE, float_type_node, t);
186 float_ftype_float_float = build_function_type (float_type_node, t);
188 t = tree_cons (NULL_TREE, double_type_node, end_params_node);
189 double_ftype_double = build_function_type (double_type_node, t);
190 t = tree_cons (NULL_TREE, double_type_node, t);
191 double_ftype_double_double = build_function_type (double_type_node, t);
193 define_builtin (BUILT_IN_FMOD, "__builtin_fmod",
194 double_ftype_double_double, "fmod", BUILTIN_CONST);
195 define_builtin (BUILT_IN_FMODF, "__builtin_fmodf",
196 float_ftype_float_float, "fmodf", BUILTIN_CONST);
198 define_builtin (BUILT_IN_ACOS, "__builtin_acos",
199 double_ftype_double, "_ZN4java4lang4Math4acosEd",
201 define_builtin (BUILT_IN_ASIN, "__builtin_asin",
202 double_ftype_double, "_ZN4java4lang4Math4asinEd",
204 define_builtin (BUILT_IN_ATAN, "__builtin_atan",
205 double_ftype_double, "_ZN4java4lang4Math4atanEd",
207 define_builtin (BUILT_IN_ATAN2, "__builtin_atan2",
208 double_ftype_double_double, "_ZN4java4lang4Math5atan2Edd",
210 define_builtin (BUILT_IN_CEIL, "__builtin_ceil",
211 double_ftype_double, "_ZN4java4lang4Math4ceilEd",
213 define_builtin (BUILT_IN_COS, "__builtin_cos",
214 double_ftype_double, "_ZN4java4lang4Math3cosEd",
216 define_builtin (BUILT_IN_EXP, "__builtin_exp",
217 double_ftype_double, "_ZN4java4lang4Math3expEd",
219 define_builtin (BUILT_IN_FLOOR, "__builtin_floor",
220 double_ftype_double, "_ZN4java4lang4Math5floorEd",
222 define_builtin (BUILT_IN_LOG, "__builtin_log",
223 double_ftype_double, "_ZN4java4lang4Math3logEd",
225 define_builtin (BUILT_IN_POW, "__builtin_pow",
226 double_ftype_double_double, "_ZN4java4lang4Math3powEdd",
228 define_builtin (BUILT_IN_SIN, "__builtin_sin",
229 double_ftype_double, "_ZN4java4lang4Math3sinEd",
231 define_builtin (BUILT_IN_SQRT, "__builtin_sqrt",
232 double_ftype_double, "_ZN4java4lang4Math4sqrtEd",
234 define_builtin (BUILT_IN_TAN, "__builtin_tan",
235 double_ftype_double, "_ZN4java4lang4Math3tanEd",
238 t = tree_cons (NULL_TREE, boolean_type_node, end_params_node);
239 t = tree_cons (NULL_TREE, boolean_type_node, t);
240 boolean_ftype_boolean_boolean = build_function_type (boolean_type_node, t);
241 define_builtin (BUILT_IN_EXPECT, "__builtin_expect",
242 boolean_ftype_boolean_boolean,
244 BUILTIN_CONST | BUILTIN_NOTHROW);
246 build_common_builtin_nodes ();
249 /* If the call matches a builtin, return the
250 appropriate builtin expression instead. */
252 check_for_builtin (tree method, tree call)
254 if (! flag_emit_class_files && optimize && TREE_CODE (call) == CALL_EXPR)
257 tree method_arguments = TREE_OPERAND (call, 1);
258 tree method_class = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
259 tree method_name = DECL_NAME (method);
260 tree method_return_type = TREE_TYPE (TREE_TYPE (method));
262 for (i = 0; java_builtins[i].builtin_code != END_BUILTINS; ++i)
264 if (method_class == java_builtins[i].class_name.t
265 && method_name == java_builtins[i].method_name.t)
269 if (java_builtins[i].creator != NULL)
270 return (*java_builtins[i].creator) (method_return_type,
272 fn = built_in_decls[java_builtins[i].builtin_code];
275 return java_build_function_call_expr (fn, method_arguments);
282 #include "gt-java-builtins.h"