1 /* Java(TM) language-specific utility routines.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 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 /* 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 const char *const string;
56 static const char *java_init (const char *);
57 static void java_finish (void);
58 static void java_init_options (void);
59 static bool java_post_options (void);
61 static int java_decode_option (int, char **);
62 static void put_decl_string (const char *, int);
63 static void put_decl_node (tree);
64 static void java_print_error_function (diagnostic_context *, const char *);
65 static int process_option_with_no (const char *, const struct string_option *, int);
66 static tree java_tree_inlining_walk_subtrees (tree *, int *, walk_tree_fn,
68 static int java_unsafe_for_reeval (tree);
69 static int merge_init_test_initialization (void * *, void *);
70 static int inline_init_test_initialization (void * *, void *);
71 static bool java_can_use_bit_fields_p (void);
72 static int java_dump_tree (void *, tree);
73 static void dump_compound_expr (dump_info_p, tree);
75 #ifndef TARGET_OBJECT_SUFFIX
76 # define TARGET_OBJECT_SUFFIX ".o"
79 /* Table indexed by tree code giving a string containing a character
80 classifying the tree code. Possibilities are
81 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
83 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
85 const char tree_code_type[] = {
88 #include "java-tree.def"
92 /* Table indexed by tree code giving number of expression
93 operands beyond the fixed part of the node structure.
94 Not used for types or decls. */
96 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
98 const unsigned char tree_code_length[] = {
101 #include "java-tree.def"
105 /* Names of tree components.
106 Used for printing out the tree and error messages. */
107 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
109 const char *const tree_code_name[] = {
112 #include "java-tree.def"
116 /* Used to avoid printing error messages with bogus function
117 prototypes. Starts out false. */
118 static bool inhibit_error_function_printing;
120 int compiling_from_source;
122 char * resource_name;
124 int flag_emit_class_files = 0;
126 /* Nonzero if input file is a file with a list of filenames to compile. */
128 int flag_filelist_file = 0;
130 /* When nonzero, we emit xref strings. Values of the flag for xref
131 backends are defined in xref_flag_table, xref.c. */
133 int flag_emit_xref = 0;
135 /* When nonzero, -Wall was turned on. */
138 /* When nonzero, check for redundant modifier uses. */
139 int flag_redundant = 0;
141 /* When nonzero, call a library routine to do integer divisions. */
142 int flag_use_divide_subroutine = 1;
144 /* When nonzero, generate code for the Boehm GC. */
145 int flag_use_boehm_gc = 0;
147 /* When nonzero, assume the runtime uses a hash table to map an
148 object to its synchronization structure. */
149 int flag_hash_synchronization;
151 /* When nonzero, permit the use of the assert keyword. */
154 /* When nonzero, assume all native functions are implemented with
158 /* When nonzero, warn when source file is newer than matching class
162 /* When nonzero, generate checks for references to NULL. */
163 int flag_check_references = 0;
165 /* The encoding of the source file. */
166 const char *current_encoding = NULL;
168 /* When nonzero, report the now deprecated empty statements. */
169 int flag_extraneous_semicolon;
171 /* When nonzero, always check for a non gcj generated classes archive. */
172 int flag_force_classes_archive_check;
174 /* When zero, don't optimize static class initialization. This flag shouldn't
175 be tested alone, use STATIC_CLASS_INITIALIZATION_OPTIMIZATION_P instead. */
176 int flag_optimize_sci = 1;
178 /* When nonzero, use offset tables for virtual method calls
179 in order to improve binary compatibility. */
180 int flag_indirect_dispatch = 0;
182 /* When zero, don't generate runtime array store checks. */
183 int flag_store_check = 1;
185 /* When nonzero, print extra version information. */
186 static int version_flag = 0;
188 /* Set nonzero if the user specified -finline-functions on the command
190 int flag_really_inline = 0;
192 /* Table of language-dependent -f options.
193 STRING is the option name. VARIABLE is the address of the variable.
194 ON_VALUE is the value to store in VARIABLE
195 if `-fSTRING' is seen as an option.
196 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
198 static const struct string_option
201 {"emit-class-file", &flag_emit_class_files, 1},
202 {"emit-class-files", &flag_emit_class_files, 1},
203 {"filelist-file", &flag_filelist_file, 1},
204 {"use-divide-subroutine", &flag_use_divide_subroutine, 1},
205 {"use-boehm-gc", &flag_use_boehm_gc, 1},
206 {"hash-synchronization", &flag_hash_synchronization, 1},
207 {"jni", &flag_jni, 1},
208 {"check-references", &flag_check_references, 1},
209 {"force-classes-archive-check", &flag_force_classes_archive_check, 1},
210 {"optimize-static-class-initialization", &flag_optimize_sci, 1 },
211 {"indirect-dispatch", &flag_indirect_dispatch, 1},
212 {"store-check", &flag_store_check, 1},
213 {"assert", &flag_assert, 1}
216 static const struct string_option
219 { "redundant-modifiers", &flag_redundant, 1 },
220 { "extraneous-semicolon", &flag_extraneous_semicolon, 1 },
221 { "out-of-date", &flag_newer, 1 }
226 /* Variable controlling how dependency tracking is enabled in
228 static int dependency_tracking = 0;
230 /* Flag values for DEPENDENCY_TRACKING. */
231 #define DEPEND_SET_FILE 1
232 #define DEPEND_ENABLE 2
233 #define DEPEND_TARGET_SET 4
234 #define DEPEND_FILE_ALREADY_SET 8
236 struct language_function GTY(())
241 #undef LANG_HOOKS_NAME
242 #define LANG_HOOKS_NAME "GNU Java"
243 #undef LANG_HOOKS_INIT
244 #define LANG_HOOKS_INIT java_init
245 #undef LANG_HOOKS_FINISH
246 #define LANG_HOOKS_FINISH java_finish
247 #undef LANG_HOOKS_INIT_OPTIONS
248 #define LANG_HOOKS_INIT_OPTIONS java_init_options
249 #undef LANG_HOOKS_DECODE_OPTION
250 #define LANG_HOOKS_DECODE_OPTION java_decode_option
251 #undef LANG_HOOKS_POST_OPTIONS
252 #define LANG_HOOKS_POST_OPTIONS java_post_options
253 #undef LANG_HOOKS_PARSE_FILE
254 #define LANG_HOOKS_PARSE_FILE java_parse_file
255 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
256 #define LANG_HOOKS_UNSAFE_FOR_REEVAL java_unsafe_for_reeval
257 #undef LANG_HOOKS_MARK_ADDRESSABLE
258 #define LANG_HOOKS_MARK_ADDRESSABLE java_mark_addressable
259 #undef LANG_HOOKS_EXPAND_EXPR
260 #define LANG_HOOKS_EXPAND_EXPR java_expand_expr
261 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
262 #define LANG_HOOKS_TRUTHVALUE_CONVERSION java_truthvalue_conversion
263 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
264 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL java_dup_lang_specific_decl
265 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
266 #define LANG_HOOKS_DECL_PRINTABLE_NAME lang_printable_name
267 #undef LANG_HOOKS_PRINT_ERROR_FUNCTION
268 #define LANG_HOOKS_PRINT_ERROR_FUNCTION java_print_error_function
269 #undef LANG_HOOKS_CAN_USE_BIT_FIELDS_P
270 #define LANG_HOOKS_CAN_USE_BIT_FIELDS_P java_can_use_bit_fields_p
272 #undef LANG_HOOKS_TYPE_FOR_MODE
273 #define LANG_HOOKS_TYPE_FOR_MODE java_type_for_mode
274 #undef LANG_HOOKS_TYPE_FOR_SIZE
275 #define LANG_HOOKS_TYPE_FOR_SIZE java_type_for_size
276 #undef LANG_HOOKS_SIGNED_TYPE
277 #define LANG_HOOKS_SIGNED_TYPE java_signed_type
278 #undef LANG_HOOKS_UNSIGNED_TYPE
279 #define LANG_HOOKS_UNSIGNED_TYPE java_unsigned_type
280 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
281 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE java_signed_or_unsigned_type
283 #undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
284 #define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES java_tree_inlining_walk_subtrees
286 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
287 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
289 /* Each front end provides its own. */
290 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
292 /* Process an option that can accept a `no-' form.
293 Return 1 if option found, 0 otherwise. */
295 process_option_with_no (const char *p, const struct string_option *table,
300 for (j = 0; j < table_size; j++)
302 if (!strcmp (p, table[j].string))
304 *table[j].variable = table[j].on_value;
307 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
308 && ! strcmp (p+3, table[j].string))
310 *table[j].variable = ! table[j].on_value;
319 * process java-specific compiler command-line options
320 * return 0, but do not complain if the option is not recognized.
323 java_decode_option (int argc __attribute__ ((__unused__)), char **argv)
329 if (strcmp (p, "-version") == 0)
332 /* We return 0 so that the caller can process this. */
336 #define CLARG "-fcompile-resource="
337 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
339 resource_name = p + sizeof (CLARG) - 1;
343 #define CLARG "-fassume-compiled="
344 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
346 add_assume_compiled (p + sizeof (CLARG) - 1, 0);
350 #define CLARG "-fno-assume-compiled="
351 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
353 add_assume_compiled (p + sizeof (CLARG) - 1, 1);
357 #define CLARG "-fassume-compiled"
358 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
360 add_assume_compiled ("", 0);
364 #define CLARG "-fno-assume-compiled"
365 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
367 add_assume_compiled ("", 1);
371 #define CLARG "-fCLASSPATH="
372 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
374 jcf_path_classpath_arg (p + sizeof (CLARG) - 1);
378 #define CLARG "-fclasspath="
379 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
381 jcf_path_classpath_arg (p + sizeof (CLARG) - 1);
385 #define CLARG "-fbootclasspath="
386 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
388 jcf_path_bootclasspath_arg (p + sizeof (CLARG) - 1);
392 #define CLARG "-fextdirs="
393 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
395 jcf_path_extdirs_arg (p + sizeof (CLARG) - 1);
399 else if (strncmp (p, "-I", 2) == 0)
401 jcf_path_include_arg (p + 2);
405 #define ARG "-foutput-class-dir="
406 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
408 jcf_write_base_directory = p + sizeof (ARG) - 1;
412 #define ARG "-fencoding="
413 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
415 current_encoding = p + sizeof (ARG) - 1;
419 #define ARG "-finline-functions"
420 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
422 flag_inline_functions = 1;
423 flag_really_inline = 1;
428 if (p[0] == '-' && p[1] == 'f')
430 /* Some kind of -f option.
431 P's value is the option sans `-f'.
432 Search for it in the table of options. */
434 if (process_option_with_no (p, lang_f_options,
435 ARRAY_SIZE (lang_f_options)))
437 return dump_switch_p (p);
440 if (strcmp (p, "-Wall") == 0)
444 flag_extraneous_semicolon = 1;
445 /* When -Wall given, enable -Wunused. We do this because the C
446 compiler does it, and people expect it. */
451 if (p[0] == '-' && p[1] == 'W')
453 /* Skip `-W' and see if we accept the option or its `no-' form. */
455 return process_option_with_no (p, lang_W_options,
456 ARRAY_SIZE (lang_W_options));
459 if (strcmp (p, "-MD") == 0)
461 jcf_dependency_init (1);
462 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
465 else if (strcmp (p, "-MMD") == 0)
467 jcf_dependency_init (0);
468 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
471 else if (strcmp (p, "-M") == 0)
473 jcf_dependency_init (1);
474 dependency_tracking |= DEPEND_ENABLE;
477 else if (strcmp (p, "-MM") == 0)
479 jcf_dependency_init (0);
480 dependency_tracking |= DEPEND_ENABLE;
483 else if (strcmp (p, "-MP") == 0)
485 jcf_dependency_print_dummies ();
488 else if (strcmp (p, "-MT") == 0)
490 jcf_dependency_set_target (argv[1]);
491 dependency_tracking |= DEPEND_TARGET_SET;
494 else if (strcmp (p, "-MF") == 0)
496 jcf_dependency_set_dep_file (argv[1]);
497 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
504 /* Global open file. */
508 java_init (const char *filename)
511 extern int flag_minimal_debug;
512 flag_minimal_debug = 0;
515 if (flag_inline_functions)
516 flag_inline_trees = 1;
518 /* Force minimum function alignment if g++ uses the least significant
519 bit of function pointers to store the virtual bit. This is required
520 to keep vtables compatible. */
521 if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
522 && force_align_functions_log < 1)
523 force_align_functions_log = 1;
525 /* Open input file. */
527 if (filename == 0 || !strcmp (filename, "-"))
532 if (dependency_tracking)
533 error ("can't do dependency tracking with input from stdin");
537 if (dependency_tracking)
541 /* If the target is set and the output filename is set, then
542 there's no processing to do here. Otherwise we must
543 compute one or the other. */
544 if (! ((dependency_tracking & DEPEND_TARGET_SET)
545 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
547 dot = strrchr (filename, '.');
549 error ("couldn't determine target name for dependency tracking");
552 char *buf = xmalloc (dot - filename +
553 3 + sizeof (TARGET_OBJECT_SUFFIX));
554 strncpy (buf, filename, dot - filename);
556 /* If emitting class files, we might have multiple
557 targets. The class generation code takes care of
558 registering them. Otherwise we compute the
560 if ((dependency_tracking & DEPEND_TARGET_SET))
562 else if (flag_emit_class_files)
563 jcf_dependency_set_target (NULL);
566 strcpy (buf + (dot - filename), TARGET_OBJECT_SUFFIX);
567 jcf_dependency_set_target (buf);
570 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
572 else if ((dependency_tracking & DEPEND_SET_FILE))
574 strcpy (buf + (dot - filename), ".d");
575 jcf_dependency_set_dep_file (buf);
578 jcf_dependency_set_dep_file ("-");
587 jcf_path_seal (version_flag);
589 java_init_decl_processing ();
591 using_eh_for_cleanups ();
599 jcf_dependency_write ();
602 /* Buffer used by lang_printable_name. */
603 static char *decl_buf = NULL;
605 /* Allocated size of decl_buf. */
606 static int decl_buflen = 0;
608 /* Length of used part of decl_buf; position for next character. */
609 static int decl_bufpos = 0;
611 /* Append the string STR to decl_buf.
612 It length is given by LEN; -1 means the string is nul-terminated. */
615 put_decl_string (const char *str, int len)
619 if (decl_bufpos + len >= decl_buflen)
621 if (decl_buf == NULL)
623 decl_buflen = len + 100;
624 decl_buf = xmalloc (decl_buflen);
629 decl_buf = xrealloc (decl_buf, decl_buflen);
632 strcpy (decl_buf + decl_bufpos, str);
636 /* Append to decl_buf a printable name for NODE. */
639 put_decl_node (tree node)
642 if (TREE_CODE (node) == POINTER_TYPE)
644 node = TREE_TYPE (node);
647 if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd'
648 && DECL_NAME (node) != NULL_TREE)
650 if (TREE_CODE (node) == FUNCTION_DECL)
652 /* We want to print the type the DECL belongs to. We don't do
653 that when we handle constructors. */
654 if (! DECL_CONSTRUCTOR_P (node)
655 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
657 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
658 put_decl_string (".", 1);
660 if (! DECL_CONSTRUCTOR_P (node))
661 put_decl_node (DECL_NAME (node));
662 if (TREE_TYPE (node) != NULL_TREE)
665 tree args = TYPE_ARG_TYPES (TREE_TYPE (node));
666 if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE)
667 args = TREE_CHAIN (args);
668 put_decl_string ("(", 1);
669 for ( ; args != end_params_node; args = TREE_CHAIN (args), i++)
672 put_decl_string (",", 1);
673 put_decl_node (TREE_VALUE (args));
675 put_decl_string (")", 1);
679 put_decl_node (DECL_NAME (node));
681 else if (TREE_CODE_CLASS (TREE_CODE (node)) == 't'
682 && TYPE_NAME (node) != NULL_TREE)
684 if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node))
686 put_decl_node (TYPE_ARRAY_ELEMENT (node));
687 put_decl_string("[]", 2);
689 else if (node == promoted_byte_type_node)
690 put_decl_string ("byte", 4);
691 else if (node == promoted_short_type_node)
692 put_decl_string ("short", 5);
693 else if (node == promoted_char_type_node)
694 put_decl_string ("char", 4);
695 else if (node == promoted_boolean_type_node)
696 put_decl_string ("boolean", 7);
697 else if (node == void_type_node && was_pointer)
698 put_decl_string ("null", 4);
700 put_decl_node (TYPE_NAME (node));
702 else if (TREE_CODE (node) == IDENTIFIER_NODE)
703 put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node));
705 put_decl_string ("<unknown>", -1);
708 /* Return a user-friendly name for DECL.
709 The resulting string is only valid until the next call.
710 The value of the hook decl_printable_name is this function,
711 which is also called directly by java_print_error_function. */
714 lang_printable_name (tree decl, int v __attribute__ ((__unused__)))
717 put_decl_node (decl);
718 put_decl_string ("", 1);
722 /* Does the same thing that lang_printable_name, but add a leading
723 space to the DECL name string -- With Leading Space. */
726 lang_printable_name_wls (tree decl, int v __attribute__ ((__unused__)))
729 put_decl_node (decl);
730 put_decl_string ("", 1);
735 /* Print on stderr the current class and method context. This function
736 is the value of the hook print_error_function. */
738 static GTY(()) tree last_error_function_context;
739 static GTY(()) tree last_error_function;
741 java_print_error_function (diagnostic_context *context ATTRIBUTE_UNUSED,
744 /* Don't print error messages with bogus function prototypes. */
745 if (inhibit_error_function_printing)
748 if (current_function_decl != NULL
749 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
752 fprintf (stderr, "%s: ", file);
754 last_error_function_context = DECL_CONTEXT (current_function_decl);
755 fprintf (stderr, "In class `%s':\n",
756 lang_printable_name (last_error_function_context, 0));
758 if (last_error_function != current_function_decl)
761 fprintf (stderr, "%s: ", file);
763 if (current_function_decl == NULL)
764 fprintf (stderr, "At top level:\n");
767 const char *name = lang_printable_name (current_function_decl, 2);
768 fprintf (stderr, "In %s `%s':\n",
769 (DECL_CONSTRUCTOR_P (current_function_decl) ? "constructor"
774 last_error_function = current_function_decl;
779 /* Called to install the PRINT_ERROR_FUNCTION hook differently
780 according to LEVEL. LEVEL is 1 during early parsing, when function
781 prototypes aren't fully resolved. java_print_error_function is set
782 so it doesn't print incomplete function prototypes. When LEVEL is
783 2, function prototypes are fully resolved and can be printed when
786 void lang_init_source (int level)
788 inhibit_error_function_printing = (level == 1);
792 java_init_options (void)
794 flag_bounds_check = 1;
796 flag_non_call_exceptions = 1;
798 /* In Java floating point operations never trap. */
799 flag_trapping_math = 0;
803 java_can_use_bit_fields_p (void)
805 /* The bit-field optimizations cause problems when generating class
807 return flag_emit_class_files ? false : true;
810 /* Post-switch processing. */
812 java_post_options (void)
814 /* Use tree inlining if possible. Function instrumentation is only
815 done in the RTL level, so we disable tree inlining. */
816 if (! flag_instrument_function_entry_exit)
820 if (flag_inline_functions)
822 flag_inline_trees = 2;
823 flag_inline_functions = 0;
827 /* Initialize the compiler back end. */
831 /* Return either DECL or its known constant value (if it has one). */
834 decl_constant_value (tree decl)
836 if (/* Don't change a variable array bound or initial value to a constant
837 in a place where a variable is invalid. */
838 current_function_decl != 0
839 && ! TREE_THIS_VOLATILE (decl)
840 && TREE_READONLY (decl)
841 && DECL_INITIAL (decl) != 0
842 && TREE_CODE (DECL_INITIAL (decl)) != ERROR_MARK
843 /* This is invalid if initial value is not constant.
844 If it has either a function call, a memory reference,
845 or a variable, then re-evaluating it could give different results. */
846 && TREE_CONSTANT (DECL_INITIAL (decl))
847 /* Check for cases where this is sub-optimal, even though valid. */
848 && TREE_CODE (DECL_INITIAL (decl)) != CONSTRUCTOR)
849 return DECL_INITIAL (decl);
853 /* Walk the language specific tree nodes during inlining. */
856 java_tree_inlining_walk_subtrees (tree *tp ATTRIBUTE_UNUSED,
857 int *subtrees ATTRIBUTE_UNUSED,
858 walk_tree_fn func ATTRIBUTE_UNUSED,
859 void *data ATTRIBUTE_UNUSED,
860 void *htab ATTRIBUTE_UNUSED)
865 #define WALK_SUBTREE(NODE) \
868 result = walk_tree (&(NODE), func, data, htab); \
878 code = TREE_CODE (t);
882 if (BLOCK_EXPR_BODY (t))
884 tree *prev = &BLOCK_EXPR_BODY (*tp);
887 WALK_SUBTREE (*prev);
888 prev = &TREE_CHAIN (*prev);
899 /* Called from unsafe_for_reeval. */
901 java_unsafe_for_reeval (tree t)
903 switch (TREE_CODE (t))
906 /* Our expander tries to expand the variables twice. Boom. */
907 if (BLOCK_EXPR_DECLS (t) != NULL)
909 return unsafe_for_reeval (BLOCK_EXPR_BODY (t));
918 /* Every call to a static constructor has an associated boolean
919 variable which is in the outermost scope of the calling method.
920 This variable is used to avoid multiple calls to the static
921 constructor for each class.
923 It looks something like this:
927 boolean dummy = OtherClass.is_initialized;
932 OtherClass.initialize();
934 ... use OtherClass.data ...
937 Each of these boolean variables has an entry in the
938 DECL_FUNCTION_INIT_TEST_TABLE of a method. When inlining a method
939 we must merge the DECL_FUNCTION_INIT_TEST_TABLE from the function
940 being inlined and create the boolean variables in the outermost
941 scope of the method being inlined into. */
943 /* Create a mapping from a boolean variable in a method being inlined
944 to one in the scope of the method being inlined into. */
947 merge_init_test_initialization (void **entry, void *x)
949 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
950 splay_tree decl_map = (splay_tree)x;
952 tree *init_test_decl;
954 /* See if we have remapped this declaration. If we haven't there's
955 a bug in the inliner. */
956 n = splay_tree_lookup (decl_map, (splay_tree_key) ite->value);
960 /* Create a new entry for the class and its remapped boolean
961 variable. If we already have a mapping for this class we've
962 already initialized it, so don't overwrite the value. */
963 init_test_decl = java_treetreehash_new
964 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
965 if (!*init_test_decl)
966 *init_test_decl = (tree)n->value;
971 /* Merge the DECL_FUNCTION_INIT_TEST_TABLE from the function we're
975 java_inlining_merge_static_initializers (tree fn, void *decl_map)
978 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
979 merge_init_test_initialization, decl_map);
982 /* Lookup a DECL_FUNCTION_INIT_TEST_TABLE entry in the method we're
983 inlining into. If we already have a corresponding entry in that
984 class we don't need to create another one, so we create a mapping
985 from the variable in the inlined class to the corresponding
989 inline_init_test_initialization (void **entry, void *x)
991 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
992 splay_tree decl_map = (splay_tree)x;
994 tree h = java_treetreehash_find
995 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
999 splay_tree_insert (decl_map,
1000 (splay_tree_key) ite->value,
1001 (splay_tree_value) h);
1006 /* Look up the boolean variables in the DECL_FUNCTION_INIT_TEST_TABLE
1007 of a method being inlined. For each hone, if we already have a
1008 variable associated with the same class in the method being inlined
1009 into, create a new mapping for it. */
1012 java_inlining_map_static_initializers (tree fn, void *decl_map)
1015 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
1016 inline_init_test_initialization, decl_map);
1019 /* Avoid voluminous output for deep recursion of compound exprs. */
1022 dump_compound_expr (dump_info_p di, tree t)
1028 switch (TREE_CODE (TREE_OPERAND (t, i)))
1031 dump_compound_expr (di, TREE_OPERAND (t, i));
1034 case EXPR_WITH_FILE_LOCATION:
1036 tree wfl_node = EXPR_WFL_NODE (TREE_OPERAND (t, i));
1037 dump_child ("expr", wfl_node);
1042 dump_child ("expr", TREE_OPERAND (t, i));
1048 java_dump_tree (void *dump_info, tree t)
1050 enum tree_code code;
1051 dump_info_p di = (dump_info_p) dump_info;
1053 /* Figure out what kind of node this is. */
1054 code = TREE_CODE (t);
1059 dump_child ("args", DECL_ARGUMENTS (t));
1060 if (DECL_EXTERNAL (t))
1061 dump_string (di, "undefined");
1062 if (TREE_PUBLIC (t))
1063 dump_string (di, "extern");
1065 dump_string (di, "static");
1066 if (DECL_LANG_SPECIFIC (t))
1067 dump_child ("body", DECL_FUNCTION_BODY (t));
1068 if (DECL_LANG_SPECIFIC (t) && !dump_flag (di, TDF_SLIM, t))
1069 dump_child ("inline body", DECL_SAVED_TREE (t));
1073 dump_child ("expr", TREE_OPERAND (t, 0));
1077 dump_child ("goto", TREE_OPERAND (t, 0));
1081 dump_child ("label", TREE_OPERAND (t, 0));
1084 case LABELED_BLOCK_EXPR:
1085 dump_child ("label", TREE_OPERAND (t, 0));
1086 dump_child ("block", TREE_OPERAND (t, 1));
1089 case EXIT_BLOCK_EXPR:
1090 dump_child ("block", TREE_OPERAND (t, 0));
1091 dump_child ("val", TREE_OPERAND (t, 1));
1095 if (BLOCK_EXPR_BODY (t))
1097 tree local = BLOCK_VARS (t);
1100 tree next = TREE_CHAIN (local);
1101 dump_child ("var", local);
1106 tree block = BLOCK_EXPR_BODY (t);
1107 dump_child ("body", block);
1108 block = TREE_CHAIN (block);
1114 if (!dump_flag (di, TDF_SLIM, t))
1116 dump_compound_expr (di, t);
1124 #include "gt-java-lang.h"