1 /* Built-in and inline functions for gcj
2 Copyright (C) 2001, 2003
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, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, 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"
40 #define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
41 #define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
42 #define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
43 #define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
44 #define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
45 #define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
46 #define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
47 #define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
48 #define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
49 #define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
50 #define DEF_POINTER_TYPE(NAME, TYPE) NAME,
51 #include "builtin-types.def"
52 #undef DEF_PRIMITIVE_TYPE
53 #undef DEF_FUNCTION_TYPE_0
54 #undef DEF_FUNCTION_TYPE_1
55 #undef DEF_FUNCTION_TYPE_2
56 #undef DEF_FUNCTION_TYPE_3
57 #undef DEF_FUNCTION_TYPE_4
58 #undef DEF_FUNCTION_TYPE_VAR_0
59 #undef DEF_FUNCTION_TYPE_VAR_1
60 #undef DEF_FUNCTION_TYPE_VAR_2
61 #undef DEF_FUNCTION_TYPE_VAR_3
62 #undef DEF_POINTER_TYPE
66 static tree max_builtin (tree, tree);
67 static tree min_builtin (tree, tree);
68 static tree abs_builtin (tree, tree);
69 static tree cos_builtin (tree, tree);
70 static tree sin_builtin (tree, tree);
71 static tree sqrt_builtin (tree, tree);
73 static tree java_build_function_call_expr (tree, tree);
74 static void define_builtin (enum built_in_function, const char *,
75 enum built_in_class, tree, int, int);
76 static tree define_builtin_type (int, int, int, int, int);
80 /* Functions of this type are used to inline a given call. Such a
81 function should either return an expression, if the call is to be
82 inlined, or NULL_TREE if a real call should be emitted. Arguments
83 are method return type and arguments to call. */
84 typedef tree builtin_creator_function PARAMS ((tree, tree));
86 /* Hold a char*, before initialization, or a tree, after
88 union string_or_tree GTY(())
90 const char * GTY ((tag ("0"))) s;
91 tree GTY ((tag ("1"))) t;
94 /* Used to hold a single builtin record. */
95 struct builtin_record GTY(())
97 union string_or_tree GTY ((desc ("1"))) class_name;
98 union string_or_tree GTY ((desc ("1"))) method_name;
99 builtin_creator_function * GTY((skip (""))) creator;
102 static GTY(()) struct builtin_record java_builtins[] =
104 { { "java.lang.Math" }, { "min" }, min_builtin },
105 { { "java.lang.Math" }, { "max" }, max_builtin },
106 { { "java.lang.Math" }, { "abs" }, abs_builtin },
107 { { "java.lang.Math" }, { "cos" }, cos_builtin },
108 { { "java.lang.Math" }, { "sin" }, sin_builtin },
109 { { "java.lang.Math" }, { "sqrt" }, sqrt_builtin },
110 { { NULL }, { NULL }, NULL }
113 /* This is only used transiently, so we don't mark it as roots for the
115 static tree builtin_types[(int) BT_LAST];
118 /* Internal functions which implement various builtin conversions. */
121 max_builtin (tree method_return_type, tree method_arguments)
123 return build (MAX_EXPR, method_return_type,
124 TREE_VALUE (method_arguments),
125 TREE_VALUE (TREE_CHAIN (method_arguments)));
129 min_builtin (tree method_return_type, tree method_arguments)
131 return build (MIN_EXPR, method_return_type,
132 TREE_VALUE (method_arguments),
133 TREE_VALUE (TREE_CHAIN (method_arguments)));
137 abs_builtin (tree method_return_type, tree method_arguments)
139 return build1 (ABS_EXPR, method_return_type,
140 TREE_VALUE (method_arguments));
143 /* Mostly copied from ../builtins.c. */
145 java_build_function_call_expr (tree fn, tree arglist)
149 call_expr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (fn)), fn);
150 call_expr = build (CALL_EXPR, TREE_TYPE (TREE_TYPE (fn)),
152 TREE_SIDE_EFFECTS (call_expr) = 1;
157 cos_builtin (tree method_return_type ATTRIBUTE_UNUSED, tree method_arguments)
159 /* FIXME: this assumes that jdouble and double are the same. */
160 tree fn = built_in_decls[BUILT_IN_COS];
163 return java_build_function_call_expr (fn, method_arguments);
167 sin_builtin (tree method_return_type ATTRIBUTE_UNUSED, tree method_arguments)
169 /* FIXME: this assumes that jdouble and double are the same. */
170 tree fn = built_in_decls[BUILT_IN_SIN];
173 return java_build_function_call_expr (fn, method_arguments);
177 sqrt_builtin (tree method_return_type ATTRIBUTE_UNUSED, tree method_arguments)
179 /* FIXME: this assumes that jdouble and double are the same. */
180 tree fn = built_in_decls[BUILT_IN_SQRT];
183 return java_build_function_call_expr (fn, method_arguments);
188 /* Define a single builtin. */
190 define_builtin (enum built_in_function val,
192 enum built_in_class class,
199 if (! name || ! type)
202 if (strncmp (name, "__builtin_", strlen ("__builtin_")) != 0)
204 decl = build_decl (FUNCTION_DECL, get_identifier (name), type);
205 DECL_EXTERNAL (decl) = 1;
206 TREE_PUBLIC (decl) = 1;
208 SET_DECL_ASSEMBLER_NAME (decl,
209 get_identifier (name + strlen ("__builtin_")));
210 make_decl_rtl (decl, NULL);
212 DECL_BUILT_IN_CLASS (decl) = class;
213 DECL_FUNCTION_CODE (decl) = val;
214 built_in_decls[val] = decl;
216 implicit_built_in_decls[val] = decl;
219 /* Compute the type for a builtin. */
221 define_builtin_type (int ret, int arg1, int arg2, int arg3, int arg4)
225 if (builtin_types[ret] == NULL_TREE)
228 args = void_list_node;
232 if (builtin_types[arg4] == NULL_TREE)
234 args = tree_cons (NULL_TREE, builtin_types[arg4], args);
238 if (builtin_types[arg3] == NULL_TREE)
240 args = tree_cons (NULL_TREE, builtin_types[arg3], args);
244 if (builtin_types[arg2] == NULL_TREE)
246 args = tree_cons (NULL_TREE, builtin_types[arg2], args);
250 if (builtin_types[arg1] == NULL_TREE)
252 args = tree_cons (NULL_TREE, builtin_types[arg1], args);
255 return build_function_type (builtin_types[ret], args);
260 /* Initialize the builtins. */
262 initialize_builtins (void)
266 for (i = 0; java_builtins[i].creator != NULL; ++i)
268 tree klass_id = get_identifier (java_builtins[i].class_name.s);
269 tree m = get_identifier (java_builtins[i].method_name.s);
271 java_builtins[i].class_name.t = klass_id;
272 java_builtins[i].method_name.t = m;
275 void_list_node = end_params_node;
277 /* Work around C-specific junk in builtin-types.def. */
278 #define intmax_type_node NULL_TREE
279 #define c_size_type_node NULL_TREE
280 #define const_string_type_node NULL_TREE
281 #define va_list_ref_type_node NULL_TREE
282 #define va_list_arg_type_node NULL_TREE
283 #define flag_isoc99 0
285 #define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
286 builtin_types[(int) ENUM] = VALUE;
287 #define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
288 builtin_types[(int) ENUM] \
289 = define_builtin_type (RETURN, -1, -1, -1, -1);
290 #define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
291 builtin_types[(int) ENUM] \
292 = define_builtin_type (RETURN, ARG1, -1, -1, -1);
293 #define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
294 builtin_types[(int) ENUM] \
295 = define_builtin_type (RETURN, ARG1, ARG2, -1, -1);
296 #define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
297 builtin_types[(int) ENUM] \
298 = define_builtin_type (RETURN, ARG1, ARG2, ARG3, -1);
299 #define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
300 builtin_types[(int) ENUM] \
301 = define_builtin_type (RETURN, ARG1, ARG2, ARG3, ARG4);
302 #define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
303 builtin_types[(int) ENUM] = NULL_TREE;
304 #define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
305 builtin_types[(int) ENUM] = NULL_TREE;
306 #define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
307 builtin_types[(int) ENUM] = NULL_TREE;
308 #define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
309 builtin_types[(int) ENUM] = NULL_TREE;
310 #define DEF_POINTER_TYPE(ENUM, TYPE) \
311 builtin_types[(int) ENUM] = NULL_TREE;
313 #include "builtin-types.def"
315 #define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, \
316 FALLBACK_P, NONANSI_P, ATTRS, IMPLICIT) \
317 define_builtin (ENUM, NAME, CLASS, builtin_types[TYPE], FALLBACK_P, IMPLICIT);
318 #include "builtins.def"
321 /* If the call matches a builtin, return the
322 appropriate builtin expression instead. */
324 check_for_builtin (tree method, tree call)
326 if (! flag_emit_class_files && optimize && TREE_CODE (call) == CALL_EXPR)
329 tree method_arguments = TREE_OPERAND (call, 1);
330 tree method_class = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
331 tree method_name = DECL_NAME (method);
332 tree method_return_type = TREE_TYPE (TREE_TYPE (method));
334 for (i = 0; java_builtins[i].creator != NULL; ++i)
336 if (method_class == java_builtins[i].class_name.t
337 && method_name == java_builtins[i].method_name.t)
339 return (*java_builtins[i].creator) (method_return_type,
347 #include "gt-java-builtins.h"