1 /* Java(TM) language-specific utility routines.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
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 /* Hacked by Per Bothner <bothner@cygnus.com> February 1996. */
30 #include "coretypes.h"
36 #include "java-tree.h"
39 #include "langhooks.h"
40 #include "langhooks-def.h"
44 #include "diagnostic.h"
45 #include "tree-inline.h"
46 #include "splay-tree.h"
47 #include "tree-dump.h"
51 static bool java_init (void);
52 static void java_finish (void);
53 static unsigned int java_init_options (unsigned int, const char **);
54 static bool java_post_options (const char **);
56 static int java_handle_option (size_t scode, const char *arg, int value);
57 static void put_decl_string (const char *, int);
58 static void put_decl_node (tree);
59 static void java_print_error_function (diagnostic_context *, const char *);
60 static tree java_tree_inlining_walk_subtrees (tree *, int *, walk_tree_fn,
62 static int merge_init_test_initialization (void * *, void *);
63 static int inline_init_test_initialization (void * *, void *);
64 static bool java_can_use_bit_fields_p (void);
65 static bool java_dump_tree (void *, tree);
66 static void dump_compound_expr (dump_info_p, tree);
67 static bool java_decl_ok_for_sibcall (tree);
68 static tree java_get_callee_fndecl (tree);
69 static void java_clear_binding_stack (void);
71 #ifndef TARGET_OBJECT_SUFFIX
72 # define TARGET_OBJECT_SUFFIX ".o"
75 /* Table indexed by tree code giving a string containing a character
76 classifying the tree code. Possibilities are
77 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
79 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
81 const char tree_code_type[] = {
84 #include "java-tree.def"
88 /* Table indexed by tree code giving number of expression
89 operands beyond the fixed part of the node structure.
90 Not used for types or decls. */
92 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
94 const unsigned char tree_code_length[] = {
97 #include "java-tree.def"
101 /* Names of tree components.
102 Used for printing out the tree and error messages. */
103 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
105 const char *const tree_code_name[] = {
108 #include "java-tree.def"
112 /* Used to avoid printing error messages with bogus function
113 prototypes. Starts out false. */
114 static bool inhibit_error_function_printing;
116 int compiling_from_source;
118 const char *resource_name;
120 /* When nonzero, we emit xref strings. Values of the flag for xref
121 backends are defined in xref_flag_table, xref.c. */
123 int flag_emit_xref = 0;
125 /* When nonzero, -Wall was turned on. */
128 /* The encoding of the source file. */
129 const char *current_encoding = NULL;
131 /* When nonzero, print extra version information. */
132 static int v_flag = 0;
134 /* Set nonzero if the user specified -finline-functions on the command
136 int flag_really_inline = 0;
140 /* Variable controlling how dependency tracking is enabled in
142 static int dependency_tracking = 0;
144 /* Flag values for DEPENDENCY_TRACKING. */
145 #define DEPEND_SET_FILE 1
146 #define DEPEND_ENABLE 2
147 #define DEPEND_TARGET_SET 4
148 #define DEPEND_FILE_ALREADY_SET 8
150 struct language_function GTY(())
155 #undef LANG_HOOKS_NAME
156 #define LANG_HOOKS_NAME "GNU Java"
157 #undef LANG_HOOKS_INIT
158 #define LANG_HOOKS_INIT java_init
159 #undef LANG_HOOKS_FINISH
160 #define LANG_HOOKS_FINISH java_finish
161 #undef LANG_HOOKS_INIT_OPTIONS
162 #define LANG_HOOKS_INIT_OPTIONS java_init_options
163 #undef LANG_HOOKS_HANDLE_OPTION
164 #define LANG_HOOKS_HANDLE_OPTION java_handle_option
165 #undef LANG_HOOKS_POST_OPTIONS
166 #define LANG_HOOKS_POST_OPTIONS java_post_options
167 #undef LANG_HOOKS_PARSE_FILE
168 #define LANG_HOOKS_PARSE_FILE java_parse_file
169 #undef LANG_HOOKS_MARK_ADDRESSABLE
170 #define LANG_HOOKS_MARK_ADDRESSABLE java_mark_addressable
171 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
172 #define LANG_HOOKS_TRUTHVALUE_CONVERSION java_truthvalue_conversion
173 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
174 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL java_dup_lang_specific_decl
175 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
176 #define LANG_HOOKS_DECL_PRINTABLE_NAME lang_printable_name
177 #undef LANG_HOOKS_PRINT_ERROR_FUNCTION
178 #define LANG_HOOKS_PRINT_ERROR_FUNCTION java_print_error_function
179 #undef LANG_HOOKS_CAN_USE_BIT_FIELDS_P
180 #define LANG_HOOKS_CAN_USE_BIT_FIELDS_P java_can_use_bit_fields_p
182 #undef LANG_HOOKS_TYPE_FOR_MODE
183 #define LANG_HOOKS_TYPE_FOR_MODE java_type_for_mode
184 #undef LANG_HOOKS_TYPE_FOR_SIZE
185 #define LANG_HOOKS_TYPE_FOR_SIZE java_type_for_size
186 #undef LANG_HOOKS_SIGNED_TYPE
187 #define LANG_HOOKS_SIGNED_TYPE java_signed_type
188 #undef LANG_HOOKS_UNSIGNED_TYPE
189 #define LANG_HOOKS_UNSIGNED_TYPE java_unsigned_type
190 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
191 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE java_signed_or_unsigned_type
193 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
194 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
196 #undef LANG_HOOKS_GIMPLIFY_EXPR
197 #define LANG_HOOKS_GIMPLIFY_EXPR java_gimplify_expr
199 #undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
200 #define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES java_tree_inlining_walk_subtrees
202 #undef LANG_HOOKS_DECL_OK_FOR_SIBCALL
203 #define LANG_HOOKS_DECL_OK_FOR_SIBCALL java_decl_ok_for_sibcall
205 #undef LANG_HOOKS_GET_CALLEE_FNDECL
206 #define LANG_HOOKS_GET_CALLEE_FNDECL java_get_callee_fndecl
208 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
209 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION java_expand_body
211 #undef LANG_HOOKS_CLEAR_BINDING_STACK
212 #define LANG_HOOKS_CLEAR_BINDING_STACK java_clear_binding_stack
214 /* Each front end provides its own. */
215 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
218 * process java-specific compiler command-line options
219 * return 0, but do not complain if the option is not recognized.
222 java_handle_option (size_t scode, const char *arg, int value)
224 enum opt_code code = (enum opt_code) scode;
229 jcf_path_include_arg (arg);
233 jcf_dependency_init (1);
234 dependency_tracking |= DEPEND_ENABLE;
238 jcf_dependency_init (1);
239 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
243 jcf_dependency_set_dep_file (arg);
244 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
248 jcf_dependency_init (0);
249 dependency_tracking |= DEPEND_ENABLE;
253 jcf_dependency_init (0);
254 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
258 jcf_dependency_print_dummies ();
262 jcf_dependency_set_target (arg);
263 dependency_tracking |= DEPEND_TARGET_SET;
268 flag_redundant = value;
269 flag_extraneous_semicolon = value;
270 /* When -Wall given, enable -Wunused. We do this because the C
271 compiler does it, and people expect it. */
275 case OPT_fenable_assertions_:
276 add_enable_assert (arg, value);
279 case OPT_fenable_assertions:
280 add_enable_assert ("", value);
283 case OPT_fdisable_assertions_:
284 add_enable_assert (arg, !value);
287 case OPT_fdisable_assertions:
288 add_enable_assert ("", !value);
291 case OPT_fassume_compiled_:
292 add_assume_compiled (arg, !value);
295 case OPT_fassume_compiled:
296 add_assume_compiled ("", !value);
299 case OPT_fbootclasspath_:
300 jcf_path_bootclasspath_arg (arg);
303 case OPT_fclasspath_:
304 case OPT_fCLASSPATH_:
305 jcf_path_classpath_arg (arg);
308 case OPT_fcompile_resource_:
313 if (!dump_switch_p (arg))
318 current_encoding = arg;
322 jcf_path_extdirs_arg (arg);
325 case OPT_finline_functions:
326 flag_inline_functions = value;
327 flag_really_inline = value;
330 case OPT_foutput_class_dir_:
331 jcf_write_base_directory = arg;
339 if (cl_options[code].flags & CL_Java)
347 /* Global open file. */
354 extern int flag_minimal_debug;
355 flag_minimal_debug = 0;
358 if (flag_inline_functions)
359 flag_inline_trees = 1;
361 /* FIXME: Indirect dispatch isn't yet compatible with static class
362 init optimization. */
363 if (flag_indirect_dispatch)
364 always_initialize_class_p = true;
366 /* Force minimum function alignment if g++ uses the least significant
367 bit of function pointers to store the virtual bit. This is required
368 to keep vtables compatible. */
369 if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
370 && force_align_functions_log < 1)
371 force_align_functions_log = 1;
373 jcf_path_seal (v_flag);
375 java_init_decl_processing ();
377 using_eh_for_cleanups ();
385 jcf_dependency_write ();
388 /* Buffer used by lang_printable_name. */
389 static char *decl_buf = NULL;
391 /* Allocated size of decl_buf. */
392 static int decl_buflen = 0;
394 /* Length of used part of decl_buf; position for next character. */
395 static int decl_bufpos = 0;
397 /* Append the string STR to decl_buf.
398 It length is given by LEN; -1 means the string is nul-terminated. */
401 put_decl_string (const char *str, int len)
405 if (decl_bufpos + len >= decl_buflen)
407 if (decl_buf == NULL)
409 decl_buflen = len + 100;
410 decl_buf = xmalloc (decl_buflen);
415 decl_buf = xrealloc (decl_buf, decl_buflen);
418 strcpy (decl_buf + decl_bufpos, str);
422 /* Append to decl_buf a printable name for NODE. */
425 put_decl_node (tree node)
428 if (TREE_CODE (node) == POINTER_TYPE)
430 node = TREE_TYPE (node);
433 if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd'
434 && DECL_NAME (node) != NULL_TREE)
436 if (TREE_CODE (node) == FUNCTION_DECL)
438 /* We want to print the type the DECL belongs to. We don't do
439 that when we handle constructors. */
440 if (! DECL_CONSTRUCTOR_P (node)
441 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
443 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
444 put_decl_string (".", 1);
446 if (! DECL_CONSTRUCTOR_P (node))
447 put_decl_node (DECL_NAME (node));
448 if (TREE_TYPE (node) != NULL_TREE)
451 tree args = TYPE_ARG_TYPES (TREE_TYPE (node));
452 if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE)
453 args = TREE_CHAIN (args);
454 put_decl_string ("(", 1);
455 for ( ; args != end_params_node; args = TREE_CHAIN (args), i++)
458 put_decl_string (",", 1);
459 put_decl_node (TREE_VALUE (args));
461 put_decl_string (")", 1);
465 put_decl_node (DECL_NAME (node));
467 else if (TREE_CODE_CLASS (TREE_CODE (node)) == 't'
468 && TYPE_NAME (node) != NULL_TREE)
470 if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node))
472 put_decl_node (TYPE_ARRAY_ELEMENT (node));
473 put_decl_string("[]", 2);
475 else if (node == promoted_byte_type_node)
476 put_decl_string ("byte", 4);
477 else if (node == promoted_short_type_node)
478 put_decl_string ("short", 5);
479 else if (node == promoted_char_type_node)
480 put_decl_string ("char", 4);
481 else if (node == promoted_boolean_type_node)
482 put_decl_string ("boolean", 7);
483 else if (node == void_type_node && was_pointer)
484 put_decl_string ("null", 4);
486 put_decl_node (TYPE_NAME (node));
488 else if (TREE_CODE (node) == IDENTIFIER_NODE)
489 put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node));
491 put_decl_string ("<unknown>", -1);
494 /* Return a user-friendly name for DECL.
495 The resulting string is only valid until the next call.
496 The value of the hook decl_printable_name is this function,
497 which is also called directly by java_print_error_function. */
500 lang_printable_name (tree decl, int v __attribute__ ((__unused__)))
503 put_decl_node (decl);
504 put_decl_string ("", 1);
508 /* Does the same thing that lang_printable_name, but add a leading
509 space to the DECL name string -- With Leading Space. */
512 lang_printable_name_wls (tree decl, int v __attribute__ ((__unused__)))
515 put_decl_node (decl);
516 put_decl_string ("", 1);
521 /* Print on stderr the current class and method context. This function
522 is the value of the hook print_error_function. */
524 static GTY(()) tree last_error_function_context;
525 static GTY(()) tree last_error_function;
527 java_print_error_function (diagnostic_context *context ATTRIBUTE_UNUSED,
530 /* Don't print error messages with bogus function prototypes. */
531 if (inhibit_error_function_printing)
534 if (current_function_decl != NULL
535 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
538 fprintf (stderr, "%s: ", file);
540 last_error_function_context = DECL_CONTEXT (current_function_decl);
541 fprintf (stderr, "In class `%s':\n",
542 lang_printable_name (last_error_function_context, 0));
544 if (last_error_function != current_function_decl)
547 fprintf (stderr, "%s: ", file);
549 if (current_function_decl == NULL)
550 fprintf (stderr, "At top level:\n");
553 const char *name = lang_printable_name (current_function_decl, 2);
554 fprintf (stderr, "In %s `%s':\n",
555 (DECL_CONSTRUCTOR_P (current_function_decl) ? "constructor"
560 last_error_function = current_function_decl;
565 /* Called to install the PRINT_ERROR_FUNCTION hook differently
566 according to LEVEL. LEVEL is 1 during early parsing, when function
567 prototypes aren't fully resolved. java_print_error_function is set
568 so it doesn't print incomplete function prototypes. When LEVEL is
569 2, function prototypes are fully resolved and can be printed when
573 lang_init_source (int level)
575 inhibit_error_function_printing = (level == 1);
579 java_init_options (unsigned int argc ATTRIBUTE_UNUSED,
580 const char **argv ATTRIBUTE_UNUSED)
582 flag_bounds_check = 1;
584 flag_non_call_exceptions = 1;
586 /* In Java floating point operations never trap. */
587 flag_trapping_math = 0;
589 /* In Java arithmetic overflow always wraps around. */
592 /* Java requires left-to-right evaluation of subexpressions. */
593 flag_evaluation_order = 1;
601 java_can_use_bit_fields_p (void)
603 /* The bit-field optimizations cause problems when generating class
605 return flag_emit_class_files ? false : true;
608 /* Post-switch processing. */
610 java_post_options (const char **pfilename)
612 const char *filename = *pfilename;
614 /* Use tree inlining. */
617 if (flag_inline_functions)
619 flag_inline_trees = 2;
620 flag_inline_functions = 0;
623 /* Open input file. */
625 if (filename == 0 || !strcmp (filename, "-"))
630 if (dependency_tracking)
631 error ("can't do dependency tracking with input from stdin");
635 if (dependency_tracking)
639 /* If the target is set and the output filename is set, then
640 there's no processing to do here. Otherwise we must
641 compute one or the other. */
642 if (! ((dependency_tracking & DEPEND_TARGET_SET)
643 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
645 dot = strrchr (filename, '.');
647 error ("couldn't determine target name for dependency tracking");
650 char *buf = xmalloc (dot - filename +
651 3 + sizeof (TARGET_OBJECT_SUFFIX));
652 strncpy (buf, filename, dot - filename);
654 /* If emitting class files, we might have multiple
655 targets. The class generation code takes care of
656 registering them. Otherwise we compute the
658 if ((dependency_tracking & DEPEND_TARGET_SET))
660 else if (flag_emit_class_files)
661 jcf_dependency_set_target (NULL);
664 strcpy (buf + (dot - filename), TARGET_OBJECT_SUFFIX);
665 jcf_dependency_set_target (buf);
668 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
670 else if ((dependency_tracking & DEPEND_SET_FILE))
672 strcpy (buf + (dot - filename), ".d");
673 jcf_dependency_set_dep_file (buf);
676 jcf_dependency_set_dep_file ("-");
684 /* Initialize the compiler back end. */
688 /* Return either DECL or its known constant value (if it has one). */
691 decl_constant_value (tree decl)
693 if (/* Don't change a variable array bound or initial value to a constant
694 in a place where a variable is invalid. */
695 current_function_decl != 0
696 && ! TREE_THIS_VOLATILE (decl)
697 && TREE_READONLY (decl)
698 && DECL_INITIAL (decl) != 0
699 && TREE_CODE (DECL_INITIAL (decl)) != ERROR_MARK
700 /* This is invalid if initial value is not constant.
701 If it has either a function call, a memory reference,
702 or a variable, then re-evaluating it could give different results. */
703 && TREE_CONSTANT (DECL_INITIAL (decl))
704 /* Check for cases where this is sub-optimal, even though valid. */
705 && TREE_CODE (DECL_INITIAL (decl)) != CONSTRUCTOR)
706 return DECL_INITIAL (decl);
710 /* Walk the language specific tree nodes during inlining. */
713 java_tree_inlining_walk_subtrees (tree *tp ATTRIBUTE_UNUSED,
714 int *subtrees ATTRIBUTE_UNUSED,
715 walk_tree_fn func ATTRIBUTE_UNUSED,
716 void *data ATTRIBUTE_UNUSED,
717 void *htab ATTRIBUTE_UNUSED)
722 #define WALK_SUBTREE(NODE) \
725 result = walk_tree (&(NODE), func, data, htab); \
735 code = TREE_CODE (t);
739 WALK_SUBTREE (BLOCK_EXPR_BODY (t));
749 /* Every call to a static constructor has an associated boolean
750 variable which is in the outermost scope of the calling method.
751 This variable is used to avoid multiple calls to the static
752 constructor for each class.
754 It looks something like this:
758 boolean dummy = OtherClass.is_initialized;
763 OtherClass.initialize();
765 ... use OtherClass.data ...
768 Each of these boolean variables has an entry in the
769 DECL_FUNCTION_INIT_TEST_TABLE of a method. When inlining a method
770 we must merge the DECL_FUNCTION_INIT_TEST_TABLE from the function
771 being inlined and create the boolean variables in the outermost
772 scope of the method being inlined into. */
774 /* Create a mapping from a boolean variable in a method being inlined
775 to one in the scope of the method being inlined into. */
778 merge_init_test_initialization (void **entry, void *x)
780 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
781 splay_tree decl_map = (splay_tree)x;
783 tree *init_test_decl;
785 /* See if we have remapped this declaration. If we haven't there's
786 a bug in the inliner. */
787 n = splay_tree_lookup (decl_map, (splay_tree_key) ite->value);
791 /* Create a new entry for the class and its remapped boolean
792 variable. If we already have a mapping for this class we've
793 already initialized it, so don't overwrite the value. */
794 init_test_decl = java_treetreehash_new
795 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
796 if (!*init_test_decl)
797 *init_test_decl = (tree)n->value;
799 /* This fixes a weird case.
801 The front end assumes that once we have called a method that
802 initializes some class, we can assume the class is initialized. It
803 does this by setting the DECL_INITIAL of the init_test_decl for that
804 class, and no initializations are emitted for that class.
806 However, what if the method that is suppoed to do the initialization
807 is itself inlined in the caller? When expanding the called method
808 we'll assume that the class initialization has already been done,
809 because the DECL_INITIAL of the init_test_decl is set.
811 To fix this we remove the DECL_INITIAL (in the caller scope) of all
812 the init_test_decls corresponding to classes initialized by the
813 inlined method. This makes the caller no longer assume that the
814 method being inlined does any class initializations. */
815 DECL_INITIAL (*init_test_decl) = NULL;
820 /* Merge the DECL_FUNCTION_INIT_TEST_TABLE from the function we're
824 java_inlining_merge_static_initializers (tree fn, void *decl_map)
827 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
828 merge_init_test_initialization, decl_map);
831 /* Lookup a DECL_FUNCTION_INIT_TEST_TABLE entry in the method we're
832 inlining into. If we already have a corresponding entry in that
833 class we don't need to create another one, so we create a mapping
834 from the variable in the inlined class to the corresponding
838 inline_init_test_initialization (void **entry, void *x)
840 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
841 splay_tree decl_map = (splay_tree)x;
843 tree h = java_treetreehash_find
844 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
847 splay_tree_insert (decl_map,
848 (splay_tree_key) ite->value,
849 (splay_tree_value) h);
853 /* Look up the boolean variables in the DECL_FUNCTION_INIT_TEST_TABLE
854 of a method being inlined. For each hone, if we already have a
855 variable associated with the same class in the method being inlined
856 into, create a new mapping for it. */
859 java_inlining_map_static_initializers (tree fn, void *decl_map)
862 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
863 inline_init_test_initialization, decl_map);
866 /* Avoid voluminous output for deep recursion of compound exprs. */
869 dump_compound_expr (dump_info_p di, tree t)
875 switch (TREE_CODE (TREE_OPERAND (t, i)))
878 dump_compound_expr (di, TREE_OPERAND (t, i));
881 case EXPR_WITH_FILE_LOCATION:
883 tree wfl_node = EXPR_WFL_NODE (TREE_OPERAND (t, i));
884 dump_child ("expr", wfl_node);
889 dump_child ("expr", TREE_OPERAND (t, i));
895 java_dump_tree (void *dump_info, tree t)
898 dump_info_p di = (dump_info_p) dump_info;
900 /* Figure out what kind of node this is. */
901 code = TREE_CODE (t);
906 dump_child ("args", DECL_ARGUMENTS (t));
907 if (DECL_EXTERNAL (t))
908 dump_string (di, "undefined");
910 dump_string (di, "extern");
912 dump_string (di, "static");
913 if (DECL_LANG_SPECIFIC (t))
914 dump_child ("body", DECL_FUNCTION_BODY (t));
915 if (DECL_LANG_SPECIFIC (t) && !dump_flag (di, TDF_SLIM, t))
916 dump_child ("inline body", DECL_SAVED_TREE (t));
920 dump_child ("expr", TREE_OPERAND (t, 0));
924 dump_child ("goto", TREE_OPERAND (t, 0));
928 dump_child ("label", TREE_OPERAND (t, 0));
931 case LABELED_BLOCK_EXPR:
932 dump_child ("label", TREE_OPERAND (t, 0));
933 dump_child ("block", TREE_OPERAND (t, 1));
936 case EXIT_BLOCK_EXPR:
937 dump_child ("block", TREE_OPERAND (t, 0));
938 dump_child ("val", TREE_OPERAND (t, 1));
942 if (BLOCK_EXPR_BODY (t))
944 tree local = BLOCK_VARS (t);
947 tree next = TREE_CHAIN (local);
948 dump_child ("var", local);
953 tree block = BLOCK_EXPR_BODY (t);
954 dump_child ("body", block);
955 block = TREE_CHAIN (block);
961 if (!dump_flag (di, TDF_SLIM, t))
963 dump_compound_expr (di, t);
972 /* Java calls can't, in general, be sibcalls because we need an
973 accurate stack trace in order to guarantee correct operation of
974 methods such as Class.forName(String) and
975 SecurityManager.getClassContext(). */
978 java_decl_ok_for_sibcall (tree decl)
980 return decl != NULL && DECL_CONTEXT (decl) == output_class;
983 /* Given a call_expr, try to figure out what its target might be. In
984 the case of an indirection via the atable, search for the decl. If
985 the decl is external, we return NULL. If we don't, the optimizer
986 will replace the indirection with a direct call, which undoes the
987 purpose of the atable indirection. */
989 java_get_callee_fndecl (tree call_expr)
991 tree method, table, element, atable_methods;
995 if (TREE_CODE (call_expr) != CALL_EXPR)
997 method = TREE_OPERAND (call_expr, 0);
999 if (TREE_CODE (method) != ARRAY_REF)
1001 table = TREE_OPERAND (method, 0);
1002 if (! DECL_LANG_SPECIFIC(table)
1003 || !DECL_OWNER (table)
1004 || TYPE_ATABLE_DECL (DECL_OWNER (table)) != table)
1007 atable_methods = TYPE_ATABLE_METHODS (DECL_OWNER (table));
1008 index = TREE_INT_CST_LOW (TREE_OPERAND (method, 1));
1010 /* FIXME: Replace this for loop with a hash table lookup. */
1011 for (element = atable_methods; element; element = TREE_CHAIN (element))
1015 tree purpose = TREE_PURPOSE (element);
1016 if (TREE_CODE (purpose) == FUNCTION_DECL
1017 && ! DECL_EXTERNAL (purpose))
1029 /* Clear the binding stack. */
1031 java_clear_binding_stack (void)
1033 while (!global_bindings_p ())
1037 #include "gt-java-lang.h"