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 java_unsafe_for_reeval (tree
);
63 static int merge_init_test_initialization (void * *, void *);
64 static int inline_init_test_initialization (void * *, void *);
65 static bool java_can_use_bit_fields_p (void);
66 static bool java_dump_tree (void *, tree
);
67 static void dump_compound_expr (dump_info_p
, tree
);
68 static bool java_decl_ok_for_sibcall (tree
);
69 static tree
java_get_callee_fndecl (tree
);
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 int flag_emit_class_files
= 0;
122 /* Nonzero if input file is a file with a list of filenames to compile. */
124 int flag_filelist_file
= 0;
126 /* When nonzero, we emit xref strings. Values of the flag for xref
127 backends are defined in xref_flag_table, xref.c. */
129 int flag_emit_xref
= 0;
131 /* When nonzero, -Wall was turned on. */
134 /* When nonzero, check for redundant modifier uses. */
135 int flag_redundant
= 0;
137 /* When nonzero, call a library routine to do integer divisions. */
138 int flag_use_divide_subroutine
= 1;
140 /* When nonzero, generate code for the Boehm GC. */
141 int flag_use_boehm_gc
= 0;
143 /* When nonzero, assume the runtime uses a hash table to map an
144 object to its synchronization structure. */
145 int flag_hash_synchronization
;
147 /* When nonzero, permit the use of the assert keyword. */
150 /* When nonzero, assume all native functions are implemented with
154 /* When nonzero, warn when source file is newer than matching class
158 /* When nonzero, generate checks for references to NULL. */
159 int flag_check_references
= 0;
161 /* The encoding of the source file. */
162 const char *current_encoding
= NULL
;
164 /* When nonzero, report the now deprecated empty statements. */
165 int flag_extraneous_semicolon
;
167 /* When nonzero, report use of deprecated classes, methods, or fields. */
168 int flag_deprecated
= 1;
170 /* When nonzero, always check for a non gcj generated classes archive. */
171 int flag_force_classes_archive_check
;
173 /* When zero, don't optimize static class initialization. This flag shouldn't
174 be tested alone, use STATIC_CLASS_INITIALIZATION_OPTIMIZATION_P instead. */
175 /* FIXME: Make this work with gimplify. */
176 int flag_optimize_sci
= 0;
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 v_flag
= 0;
188 /* Set nonzero if the user specified -finline-functions on the command
190 int flag_really_inline
= 0;
194 /* Variable controlling how dependency tracking is enabled in
196 static int dependency_tracking
= 0;
198 /* Flag values for DEPENDENCY_TRACKING. */
199 #define DEPEND_SET_FILE 1
200 #define DEPEND_ENABLE 2
201 #define DEPEND_TARGET_SET 4
202 #define DEPEND_FILE_ALREADY_SET 8
204 struct language_function
GTY(())
209 #undef LANG_HOOKS_NAME
210 #define LANG_HOOKS_NAME "GNU Java"
211 #undef LANG_HOOKS_INIT
212 #define LANG_HOOKS_INIT java_init
213 #undef LANG_HOOKS_FINISH
214 #define LANG_HOOKS_FINISH java_finish
215 #undef LANG_HOOKS_INIT_OPTIONS
216 #define LANG_HOOKS_INIT_OPTIONS java_init_options
217 #undef LANG_HOOKS_HANDLE_OPTION
218 #define LANG_HOOKS_HANDLE_OPTION java_handle_option
219 #undef LANG_HOOKS_POST_OPTIONS
220 #define LANG_HOOKS_POST_OPTIONS java_post_options
221 #undef LANG_HOOKS_PARSE_FILE
222 #define LANG_HOOKS_PARSE_FILE java_parse_file
223 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
224 #define LANG_HOOKS_UNSAFE_FOR_REEVAL java_unsafe_for_reeval
225 #undef LANG_HOOKS_MARK_ADDRESSABLE
226 #define LANG_HOOKS_MARK_ADDRESSABLE java_mark_addressable
227 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
228 #define LANG_HOOKS_TRUTHVALUE_CONVERSION java_truthvalue_conversion
229 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
230 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL java_dup_lang_specific_decl
231 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
232 #define LANG_HOOKS_DECL_PRINTABLE_NAME lang_printable_name
233 #undef LANG_HOOKS_PRINT_ERROR_FUNCTION
234 #define LANG_HOOKS_PRINT_ERROR_FUNCTION java_print_error_function
235 #undef LANG_HOOKS_CAN_USE_BIT_FIELDS_P
236 #define LANG_HOOKS_CAN_USE_BIT_FIELDS_P java_can_use_bit_fields_p
238 #undef LANG_HOOKS_TYPE_FOR_MODE
239 #define LANG_HOOKS_TYPE_FOR_MODE java_type_for_mode
240 #undef LANG_HOOKS_TYPE_FOR_SIZE
241 #define LANG_HOOKS_TYPE_FOR_SIZE java_type_for_size
242 #undef LANG_HOOKS_SIGNED_TYPE
243 #define LANG_HOOKS_SIGNED_TYPE java_signed_type
244 #undef LANG_HOOKS_UNSIGNED_TYPE
245 #define LANG_HOOKS_UNSIGNED_TYPE java_unsigned_type
246 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
247 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE java_signed_or_unsigned_type
249 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
250 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
252 #undef LANG_HOOKS_GIMPLIFY_EXPR
253 #define LANG_HOOKS_GIMPLIFY_EXPR java_gimplify_expr
255 #undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
256 #define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES java_tree_inlining_walk_subtrees
258 #undef LANG_HOOKS_DECL_OK_FOR_SIBCALL
259 #define LANG_HOOKS_DECL_OK_FOR_SIBCALL java_decl_ok_for_sibcall
261 #undef LANG_HOOKS_GET_CALLEE_FNDECL
262 #define LANG_HOOKS_GET_CALLEE_FNDECL java_get_callee_fndecl
264 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
265 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION java_expand_body
267 /* Each front end provides its own. */
268 const struct lang_hooks lang_hooks
= LANG_HOOKS_INITIALIZER
;
271 * process java-specific compiler command-line options
272 * return 0, but do not complain if the option is not recognized.
275 java_handle_option (size_t scode
, const char *arg
, int value
)
277 enum opt_code code
= (enum opt_code
) scode
;
285 jcf_path_include_arg (arg
);
289 jcf_dependency_init (1);
290 dependency_tracking
|= DEPEND_ENABLE
;
294 jcf_dependency_init (1);
295 dependency_tracking
|= DEPEND_SET_FILE
| DEPEND_ENABLE
;
299 jcf_dependency_set_dep_file (arg
);
300 dependency_tracking
|= DEPEND_FILE_ALREADY_SET
;
304 jcf_dependency_init (0);
305 dependency_tracking
|= DEPEND_ENABLE
;
309 jcf_dependency_init (0);
310 dependency_tracking
|= DEPEND_SET_FILE
| DEPEND_ENABLE
;
314 jcf_dependency_print_dummies ();
318 jcf_dependency_set_target (arg
);
319 dependency_tracking
|= DEPEND_TARGET_SET
;
324 flag_redundant
= value
;
325 flag_extraneous_semicolon
= value
;
326 /* When -Wall given, enable -Wunused. We do this because the C
327 compiler does it, and people expect it. */
331 case OPT_Wdeprecated
:
332 flag_deprecated
= value
;
335 case OPT_Wextraneous_semicolon
:
336 flag_extraneous_semicolon
= value
;
339 case OPT_Wout_of_date
:
343 case OPT_Wredundant_modifiers
:
344 flag_redundant
= value
;
351 case OPT_fenable_assertions_
:
352 add_enable_assert (arg
, value
);
355 case OPT_fenable_assertions
:
356 add_enable_assert ("", value
);
359 case OPT_fdisable_assertions_
:
360 add_enable_assert (arg
, !value
);
363 case OPT_fdisable_assertions
:
364 add_enable_assert ("", !value
);
367 case OPT_fassume_compiled_
:
368 add_assume_compiled (arg
, !value
);
371 case OPT_fassume_compiled
:
372 add_assume_compiled ("", !value
);
375 case OPT_fbootclasspath_
:
376 jcf_path_bootclasspath_arg (arg
);
379 case OPT_fcheck_references
:
380 flag_check_references
= value
;
383 case OPT_fclasspath_
:
384 case OPT_fCLASSPATH_
:
385 jcf_path_classpath_arg (arg
);
388 case OPT_fcompile_resource_
:
393 if (!dump_switch_p (arg
))
397 case OPT_femit_class_file
:
398 case OPT_femit_class_files
:
399 flag_emit_class_files
= value
;
403 current_encoding
= arg
;
407 jcf_path_extdirs_arg (arg
);
410 case OPT_ffilelist_file
:
411 flag_filelist_file
= value
;
414 case OPT_fforce_classes_archive_check
:
415 flag_force_classes_archive_check
= value
;
418 case OPT_fhash_synchronization
:
419 flag_hash_synchronization
= value
;
422 case OPT_findirect_dispatch
:
423 flag_indirect_dispatch
= value
;
426 case OPT_finline_functions
:
427 flag_inline_functions
= value
;
428 flag_really_inline
= value
;
435 case OPT_foptimize_static_class_initialization
:
436 flag_optimize_sci
= value
;
439 case OPT_foutput_class_dir_
:
440 jcf_write_base_directory
= arg
;
443 case OPT_fstore_check
:
444 flag_store_check
= value
;
447 case OPT_fuse_boehm_gc
:
448 flag_use_boehm_gc
= value
;
451 case OPT_fuse_divide_subroutine
:
452 flag_use_divide_subroutine
= value
;
463 /* Global open file. */
470 extern int flag_minimal_debug
;
471 flag_minimal_debug
= 0;
474 if (flag_inline_functions
)
475 flag_inline_trees
= 1;
477 /* FIXME: Indirect dispatch isn't yet compatible with static class
478 init optimization. */
479 if (flag_indirect_dispatch
)
480 always_initialize_class_p
= true;
482 /* Force minimum function alignment if g++ uses the least significant
483 bit of function pointers to store the virtual bit. This is required
484 to keep vtables compatible. */
485 if (TARGET_PTRMEMFUNC_VBIT_LOCATION
== ptrmemfunc_vbit_in_pfn
486 && force_align_functions_log
< 1)
487 force_align_functions_log
= 1;
489 jcf_path_seal (v_flag
);
491 java_init_decl_processing ();
493 using_eh_for_cleanups ();
501 jcf_dependency_write ();
504 /* Buffer used by lang_printable_name. */
505 static char *decl_buf
= NULL
;
507 /* Allocated size of decl_buf. */
508 static int decl_buflen
= 0;
510 /* Length of used part of decl_buf; position for next character. */
511 static int decl_bufpos
= 0;
513 /* Append the string STR to decl_buf.
514 It length is given by LEN; -1 means the string is nul-terminated. */
517 put_decl_string (const char *str
, int len
)
521 if (decl_bufpos
+ len
>= decl_buflen
)
523 if (decl_buf
== NULL
)
525 decl_buflen
= len
+ 100;
526 decl_buf
= xmalloc (decl_buflen
);
531 decl_buf
= xrealloc (decl_buf
, decl_buflen
);
534 strcpy (decl_buf
+ decl_bufpos
, str
);
538 /* Append to decl_buf a printable name for NODE. */
541 put_decl_node (tree node
)
544 if (TREE_CODE (node
) == POINTER_TYPE
)
546 node
= TREE_TYPE (node
);
549 if (TREE_CODE_CLASS (TREE_CODE (node
)) == 'd'
550 && DECL_NAME (node
) != NULL_TREE
)
552 if (TREE_CODE (node
) == FUNCTION_DECL
)
554 /* We want to print the type the DECL belongs to. We don't do
555 that when we handle constructors. */
556 if (! DECL_CONSTRUCTOR_P (node
)
557 && ! DECL_ARTIFICIAL (node
) && DECL_CONTEXT (node
))
559 put_decl_node (TYPE_NAME (DECL_CONTEXT (node
)));
560 put_decl_string (".", 1);
562 if (! DECL_CONSTRUCTOR_P (node
))
563 put_decl_node (DECL_NAME (node
));
564 if (TREE_TYPE (node
) != NULL_TREE
)
567 tree args
= TYPE_ARG_TYPES (TREE_TYPE (node
));
568 if (TREE_CODE (TREE_TYPE (node
)) == METHOD_TYPE
)
569 args
= TREE_CHAIN (args
);
570 put_decl_string ("(", 1);
571 for ( ; args
!= end_params_node
; args
= TREE_CHAIN (args
), i
++)
574 put_decl_string (",", 1);
575 put_decl_node (TREE_VALUE (args
));
577 put_decl_string (")", 1);
581 put_decl_node (DECL_NAME (node
));
583 else if (TREE_CODE_CLASS (TREE_CODE (node
)) == 't'
584 && TYPE_NAME (node
) != NULL_TREE
)
586 if (TREE_CODE (node
) == RECORD_TYPE
&& TYPE_ARRAY_P (node
))
588 put_decl_node (TYPE_ARRAY_ELEMENT (node
));
589 put_decl_string("[]", 2);
591 else if (node
== promoted_byte_type_node
)
592 put_decl_string ("byte", 4);
593 else if (node
== promoted_short_type_node
)
594 put_decl_string ("short", 5);
595 else if (node
== promoted_char_type_node
)
596 put_decl_string ("char", 4);
597 else if (node
== promoted_boolean_type_node
)
598 put_decl_string ("boolean", 7);
599 else if (node
== void_type_node
&& was_pointer
)
600 put_decl_string ("null", 4);
602 put_decl_node (TYPE_NAME (node
));
604 else if (TREE_CODE (node
) == IDENTIFIER_NODE
)
605 put_decl_string (IDENTIFIER_POINTER (node
), IDENTIFIER_LENGTH (node
));
607 put_decl_string ("<unknown>", -1);
610 /* Return a user-friendly name for DECL.
611 The resulting string is only valid until the next call.
612 The value of the hook decl_printable_name is this function,
613 which is also called directly by java_print_error_function. */
616 lang_printable_name (tree decl
, int v
__attribute__ ((__unused__
)))
619 put_decl_node (decl
);
620 put_decl_string ("", 1);
624 /* Does the same thing that lang_printable_name, but add a leading
625 space to the DECL name string -- With Leading Space. */
628 lang_printable_name_wls (tree decl
, int v
__attribute__ ((__unused__
)))
631 put_decl_node (decl
);
632 put_decl_string ("", 1);
637 /* Print on stderr the current class and method context. This function
638 is the value of the hook print_error_function. */
640 static GTY(()) tree last_error_function_context
;
641 static GTY(()) tree last_error_function
;
643 java_print_error_function (diagnostic_context
*context ATTRIBUTE_UNUSED
,
646 /* Don't print error messages with bogus function prototypes. */
647 if (inhibit_error_function_printing
)
650 if (current_function_decl
!= NULL
651 && DECL_CONTEXT (current_function_decl
) != last_error_function_context
)
654 fprintf (stderr
, "%s: ", file
);
656 last_error_function_context
= DECL_CONTEXT (current_function_decl
);
657 fprintf (stderr
, "In class `%s':\n",
658 lang_printable_name (last_error_function_context
, 0));
660 if (last_error_function
!= current_function_decl
)
663 fprintf (stderr
, "%s: ", file
);
665 if (current_function_decl
== NULL
)
666 fprintf (stderr
, "At top level:\n");
669 const char *name
= lang_printable_name (current_function_decl
, 2);
670 fprintf (stderr
, "In %s `%s':\n",
671 (DECL_CONSTRUCTOR_P (current_function_decl
) ? "constructor"
676 last_error_function
= current_function_decl
;
681 /* Called to install the PRINT_ERROR_FUNCTION hook differently
682 according to LEVEL. LEVEL is 1 during early parsing, when function
683 prototypes aren't fully resolved. java_print_error_function is set
684 so it doesn't print incomplete function prototypes. When LEVEL is
685 2, function prototypes are fully resolved and can be printed when
689 lang_init_source (int level
)
691 inhibit_error_function_printing
= (level
== 1);
695 java_init_options (unsigned int argc ATTRIBUTE_UNUSED
,
696 const char **argv ATTRIBUTE_UNUSED
)
698 flag_bounds_check
= 1;
700 flag_non_call_exceptions
= 1;
702 /* In Java floating point operations never trap. */
703 flag_trapping_math
= 0;
705 /* In Java arithmetic overflow always wraps around. */
708 /* Java requires left-to-right evaluation of subexpressions. */
709 flag_evaluation_order
= 1;
717 java_can_use_bit_fields_p (void)
719 /* The bit-field optimizations cause problems when generating class
721 return flag_emit_class_files
? false : true;
724 /* Post-switch processing. */
726 java_post_options (const char **pfilename
)
728 const char *filename
= *pfilename
;
730 /* Use tree inlining. */
733 if (flag_inline_functions
)
735 flag_inline_trees
= 2;
736 flag_inline_functions
= 0;
739 /* Open input file. */
741 if (filename
== 0 || !strcmp (filename
, "-"))
746 if (dependency_tracking
)
747 error ("can't do dependency tracking with input from stdin");
751 if (dependency_tracking
)
755 /* If the target is set and the output filename is set, then
756 there's no processing to do here. Otherwise we must
757 compute one or the other. */
758 if (! ((dependency_tracking
& DEPEND_TARGET_SET
)
759 && (dependency_tracking
& DEPEND_FILE_ALREADY_SET
)))
761 dot
= strrchr (filename
, '.');
763 error ("couldn't determine target name for dependency tracking");
766 char *buf
= xmalloc (dot
- filename
+
767 3 + sizeof (TARGET_OBJECT_SUFFIX
));
768 strncpy (buf
, filename
, dot
- filename
);
770 /* If emitting class files, we might have multiple
771 targets. The class generation code takes care of
772 registering them. Otherwise we compute the
774 if ((dependency_tracking
& DEPEND_TARGET_SET
))
776 else if (flag_emit_class_files
)
777 jcf_dependency_set_target (NULL
);
780 strcpy (buf
+ (dot
- filename
), TARGET_OBJECT_SUFFIX
);
781 jcf_dependency_set_target (buf
);
784 if ((dependency_tracking
& DEPEND_FILE_ALREADY_SET
))
786 else if ((dependency_tracking
& DEPEND_SET_FILE
))
788 strcpy (buf
+ (dot
- filename
), ".d");
789 jcf_dependency_set_dep_file (buf
);
792 jcf_dependency_set_dep_file ("-");
800 /* Initialize the compiler back end. */
804 /* Return either DECL or its known constant value (if it has one). */
807 decl_constant_value (tree decl
)
809 if (/* Don't change a variable array bound or initial value to a constant
810 in a place where a variable is invalid. */
811 current_function_decl
!= 0
812 && ! TREE_THIS_VOLATILE (decl
)
813 && TREE_READONLY (decl
)
814 && DECL_INITIAL (decl
) != 0
815 && TREE_CODE (DECL_INITIAL (decl
)) != ERROR_MARK
816 /* This is invalid if initial value is not constant.
817 If it has either a function call, a memory reference,
818 or a variable, then re-evaluating it could give different results. */
819 && TREE_CONSTANT (DECL_INITIAL (decl
))
820 /* Check for cases where this is sub-optimal, even though valid. */
821 && TREE_CODE (DECL_INITIAL (decl
)) != CONSTRUCTOR
)
822 return DECL_INITIAL (decl
);
826 /* Walk the language specific tree nodes during inlining. */
829 java_tree_inlining_walk_subtrees (tree
*tp ATTRIBUTE_UNUSED
,
830 int *subtrees ATTRIBUTE_UNUSED
,
831 walk_tree_fn func ATTRIBUTE_UNUSED
,
832 void *data ATTRIBUTE_UNUSED
,
833 void *htab ATTRIBUTE_UNUSED
)
838 #define WALK_SUBTREE(NODE) \
841 result = walk_tree (&(NODE), func, data, htab); \
851 code
= TREE_CODE (t
);
855 WALK_SUBTREE (BLOCK_EXPR_BODY (t
));
865 /* Called from unsafe_for_reeval. */
867 java_unsafe_for_reeval (tree t
)
869 switch (TREE_CODE (t
))
872 /* Our expander tries to expand the variables twice. Boom. */
873 if (BLOCK_EXPR_DECLS (t
) != NULL
)
875 return unsafe_for_reeval (BLOCK_EXPR_BODY (t
));
884 /* Every call to a static constructor has an associated boolean
885 variable which is in the outermost scope of the calling method.
886 This variable is used to avoid multiple calls to the static
887 constructor for each class.
889 It looks something like this:
893 boolean dummy = OtherClass.is_initialized;
898 OtherClass.initialize();
900 ... use OtherClass.data ...
903 Each of these boolean variables has an entry in the
904 DECL_FUNCTION_INIT_TEST_TABLE of a method. When inlining a method
905 we must merge the DECL_FUNCTION_INIT_TEST_TABLE from the function
906 being inlined and create the boolean variables in the outermost
907 scope of the method being inlined into. */
909 /* Create a mapping from a boolean variable in a method being inlined
910 to one in the scope of the method being inlined into. */
913 merge_init_test_initialization (void **entry
, void *x
)
915 struct treetreehash_entry
*ite
= (struct treetreehash_entry
*) *entry
;
916 splay_tree decl_map
= (splay_tree
)x
;
918 tree
*init_test_decl
;
920 /* See if we have remapped this declaration. If we haven't there's
921 a bug in the inliner. */
922 n
= splay_tree_lookup (decl_map
, (splay_tree_key
) ite
->value
);
926 /* Create a new entry for the class and its remapped boolean
927 variable. If we already have a mapping for this class we've
928 already initialized it, so don't overwrite the value. */
929 init_test_decl
= java_treetreehash_new
930 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl
), ite
->key
);
931 if (!*init_test_decl
)
932 *init_test_decl
= (tree
)n
->value
;
934 /* This fixes a weird case.
936 The front end assumes that once we have called a method that
937 initializes some class, we can assume the class is initialized. It
938 does this by setting the DECL_INITIAL of the init_test_decl for that
939 class, and no initializations are emitted for that class.
941 However, what if the method that is suppoed to do the initialization
942 is itself inlined in the caller? When expanding the called method
943 we'll assume that the class initialization has already been done,
944 because the DECL_INITIAL of the init_test_decl is set.
946 To fix this we remove the DECL_INITIAL (in the caller scope) of all
947 the init_test_decls corresponding to classes initialized by the
948 inlined method. This makes the caller no longer assume that the
949 method being inlined does any class initializations. */
950 DECL_INITIAL (*init_test_decl
) = NULL
;
955 /* Merge the DECL_FUNCTION_INIT_TEST_TABLE from the function we're
959 java_inlining_merge_static_initializers (tree fn
, void *decl_map
)
962 (DECL_FUNCTION_INIT_TEST_TABLE (fn
),
963 merge_init_test_initialization
, decl_map
);
966 /* Lookup a DECL_FUNCTION_INIT_TEST_TABLE entry in the method we're
967 inlining into. If we already have a corresponding entry in that
968 class we don't need to create another one, so we create a mapping
969 from the variable in the inlined class to the corresponding
973 inline_init_test_initialization (void **entry
, void *x
)
975 struct treetreehash_entry
*ite
= (struct treetreehash_entry
*) *entry
;
976 splay_tree decl_map
= (splay_tree
)x
;
978 tree h
= java_treetreehash_find
979 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl
), ite
->key
);
982 splay_tree_insert (decl_map
,
983 (splay_tree_key
) ite
->value
,
984 (splay_tree_value
) h
);
988 /* Look up the boolean variables in the DECL_FUNCTION_INIT_TEST_TABLE
989 of a method being inlined. For each hone, if we already have a
990 variable associated with the same class in the method being inlined
991 into, create a new mapping for it. */
994 java_inlining_map_static_initializers (tree fn
, void *decl_map
)
997 (DECL_FUNCTION_INIT_TEST_TABLE (fn
),
998 inline_init_test_initialization
, decl_map
);
1001 /* Avoid voluminous output for deep recursion of compound exprs. */
1004 dump_compound_expr (dump_info_p di
, tree t
)
1010 switch (TREE_CODE (TREE_OPERAND (t
, i
)))
1013 dump_compound_expr (di
, TREE_OPERAND (t
, i
));
1016 case EXPR_WITH_FILE_LOCATION
:
1018 tree wfl_node
= EXPR_WFL_NODE (TREE_OPERAND (t
, i
));
1019 dump_child ("expr", wfl_node
);
1024 dump_child ("expr", TREE_OPERAND (t
, i
));
1030 java_dump_tree (void *dump_info
, tree t
)
1032 enum tree_code code
;
1033 dump_info_p di
= (dump_info_p
) dump_info
;
1035 /* Figure out what kind of node this is. */
1036 code
= TREE_CODE (t
);
1041 dump_child ("args", DECL_ARGUMENTS (t
));
1042 if (DECL_EXTERNAL (t
))
1043 dump_string (di
, "undefined");
1044 if (TREE_PUBLIC (t
))
1045 dump_string (di
, "extern");
1047 dump_string (di
, "static");
1048 if (DECL_LANG_SPECIFIC (t
))
1049 dump_child ("body", DECL_FUNCTION_BODY (t
));
1050 if (DECL_LANG_SPECIFIC (t
) && !dump_flag (di
, TDF_SLIM
, t
))
1051 dump_child ("inline body", DECL_SAVED_TREE (t
));
1055 dump_child ("expr", TREE_OPERAND (t
, 0));
1059 dump_child ("goto", TREE_OPERAND (t
, 0));
1063 dump_child ("label", TREE_OPERAND (t
, 0));
1066 case LABELED_BLOCK_EXPR
:
1067 dump_child ("label", TREE_OPERAND (t
, 0));
1068 dump_child ("block", TREE_OPERAND (t
, 1));
1071 case EXIT_BLOCK_EXPR
:
1072 dump_child ("block", TREE_OPERAND (t
, 0));
1073 dump_child ("val", TREE_OPERAND (t
, 1));
1077 if (BLOCK_EXPR_BODY (t
))
1079 tree local
= BLOCK_VARS (t
);
1082 tree next
= TREE_CHAIN (local
);
1083 dump_child ("var", local
);
1088 tree block
= BLOCK_EXPR_BODY (t
);
1089 dump_child ("body", block
);
1090 block
= TREE_CHAIN (block
);
1096 if (!dump_flag (di
, TDF_SLIM
, t
))
1098 dump_compound_expr (di
, t
);
1107 /* Java calls can't, in general, be sibcalls because we need an
1108 accurate stack trace in order to guarantee correct operation of
1109 methods such as Class.forName(String) and
1110 SecurityManager.getClassContext(). */
1113 java_decl_ok_for_sibcall (tree decl
)
1115 return decl
!= NULL
&& DECL_CONTEXT (decl
) == output_class
;
1118 /* Given a call_expr, try to figure out what its target might be. In
1119 the case of an indirection via the atable, search for the decl. If
1120 the decl is external, we return NULL. If we don't, the optimizer
1121 will replace the indirection with a direct call, which undoes the
1122 purpose of the atable indirection. */
1124 java_get_callee_fndecl (tree call_expr
)
1126 tree method
, table
, element
, atable_methods
;
1128 HOST_WIDE_INT index
;
1130 if (TREE_CODE (call_expr
) != CALL_EXPR
)
1132 method
= TREE_OPERAND (call_expr
, 0);
1133 STRIP_NOPS (method
);
1134 if (TREE_CODE (method
) != ARRAY_REF
)
1136 table
= TREE_OPERAND (method
, 0);
1137 if (! DECL_LANG_SPECIFIC(table
)
1138 || !DECL_OWNER (table
)
1139 || TYPE_ATABLE_DECL (DECL_OWNER (table
)) != table
)
1142 atable_methods
= TYPE_ATABLE_METHODS (DECL_OWNER (table
));
1143 index
= TREE_INT_CST_LOW (TREE_OPERAND (method
, 1));
1145 /* FIXME: Replace this for loop with a hash table lookup. */
1146 for (element
= atable_methods
; element
; element
= TREE_CHAIN (element
))
1150 tree purpose
= TREE_PURPOSE (element
);
1151 if (TREE_CODE (purpose
) == FUNCTION_DECL
1152 && ! DECL_EXTERNAL (purpose
))
1163 #include "gt-java-lang.h"