1 /* Java(TM) language-specific utility routines.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007 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 3, 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 COPYING3. If not see
19 <http://www.gnu.org/licenses/>.
21 Java and all Java-based marks are trademarks or registered trademarks
22 of Sun Microsystems, Inc. in the United States and other countries.
23 The Free Software Foundation is independent of Sun Microsystems, Inc. */
25 /* Hacked by Per Bothner <bothner@cygnus.com> February 1996. */
29 #include "coretypes.h"
35 #include "java-tree.h"
38 #include "langhooks.h"
39 #include "langhooks-def.h"
42 #include "diagnostic.h"
43 #include "tree-inline.h"
44 #include "splay-tree.h"
45 #include "tree-dump.h"
49 static bool java_init (void);
50 static void java_finish (void);
51 static unsigned int java_init_options (unsigned int, const char **);
52 static bool java_post_options (const char **);
54 static int java_handle_option (size_t scode
, const char *arg
, int value
);
55 static void put_decl_string (const char *, int);
56 static void put_decl_node (tree
);
57 static void java_print_error_function (diagnostic_context
*, const char *);
58 static int merge_init_test_initialization (void * *, void *);
59 static int inline_init_test_initialization (void * *, void *);
60 static bool java_dump_tree (void *, tree
);
61 static void dump_compound_expr (dump_info_p
, tree
);
62 static bool java_decl_ok_for_sibcall (const_tree
);
63 static tree
java_get_callee_fndecl (const_tree
);
64 static void java_clear_binding_stack (void);
66 #ifndef TARGET_OBJECT_SUFFIX
67 # define TARGET_OBJECT_SUFFIX ".o"
70 /* Table indexed by tree code giving a string containing a character
71 classifying the tree code. Possibilities are
72 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
74 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
76 const enum tree_code_class tree_code_type
[] = {
79 #include "java-tree.def"
83 /* Table indexed by tree code giving number of expression
84 operands beyond the fixed part of the node structure.
85 Not used for types or decls. */
87 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
89 const unsigned char tree_code_length
[] = {
92 #include "java-tree.def"
96 /* Names of tree components.
97 Used for printing out the tree and error messages. */
98 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
100 const char *const tree_code_name
[] = {
103 #include "java-tree.def"
107 /* Table of machine-independent attributes. */
108 const struct attribute_spec java_attribute_table
[] =
110 { "nonnull", 0, -1, false, true, true,
112 { NULL
, 0, 0, false, false, false, NULL
}
115 /* Used to avoid printing error messages with bogus function
116 prototypes. Starts out false. */
117 static bool inhibit_error_function_printing
;
119 const char *resource_name
;
121 /* When nonzero, -Wall was turned on. */
124 /* When nonzero, report use of deprecated classes, methods, or fields. */
125 int flag_deprecated
= 1;
127 /* When zero, don't optimize static class initialization. This flag shouldn't
128 be tested alone, use STATIC_CLASS_INITIALIZATION_OPTIMIZATION_P instead. */
129 /* FIXME: Make this work with gimplify. */
130 /* int flag_optimize_sci = 0; */
132 /* Don't attempt to verify invocations. */
133 int flag_verify_invocations
= 0;
135 /* When nonzero, print extra version information. */
136 static int v_flag
= 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_DUP_LANG_SPECIFIC_DECL
172 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL java_dup_lang_specific_decl
173 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
174 #define LANG_HOOKS_DECL_PRINTABLE_NAME lang_printable_name
175 #undef LANG_HOOKS_PRINT_ERROR_FUNCTION
176 #define LANG_HOOKS_PRINT_ERROR_FUNCTION java_print_error_function
178 #undef LANG_HOOKS_TYPE_FOR_MODE
179 #define LANG_HOOKS_TYPE_FOR_MODE java_type_for_mode
180 #undef LANG_HOOKS_TYPE_FOR_SIZE
181 #define LANG_HOOKS_TYPE_FOR_SIZE java_type_for_size
183 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
184 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
186 #undef LANG_HOOKS_GIMPLIFY_EXPR
187 #define LANG_HOOKS_GIMPLIFY_EXPR java_gimplify_expr
189 #undef LANG_HOOKS_DECL_OK_FOR_SIBCALL
190 #define LANG_HOOKS_DECL_OK_FOR_SIBCALL java_decl_ok_for_sibcall
192 #undef LANG_HOOKS_GET_CALLEE_FNDECL
193 #define LANG_HOOKS_GET_CALLEE_FNDECL java_get_callee_fndecl
195 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
196 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION java_expand_body
198 #undef LANG_HOOKS_CLEAR_BINDING_STACK
199 #define LANG_HOOKS_CLEAR_BINDING_STACK java_clear_binding_stack
201 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
202 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME java_mangle_decl
204 #undef LANG_HOOKS_ATTRIBUTE_TABLE
205 #define LANG_HOOKS_ATTRIBUTE_TABLE java_attribute_table
207 /* Each front end provides its own. */
208 const struct lang_hooks lang_hooks
= LANG_HOOKS_INITIALIZER
;
211 * process java-specific compiler command-line options
212 * return 0, but do not complain if the option is not recognized.
215 java_handle_option (size_t scode
, const char *arg
, int value
)
217 enum opt_code code
= (enum opt_code
) scode
;
222 jcf_path_include_arg (arg
);
226 jcf_dependency_init (1);
227 dependency_tracking
|= DEPEND_ENABLE
;
231 jcf_dependency_init (1);
232 dependency_tracking
|= DEPEND_SET_FILE
| DEPEND_ENABLE
;
236 jcf_dependency_set_dep_file (arg
);
237 dependency_tracking
|= DEPEND_FILE_ALREADY_SET
;
241 jcf_dependency_init (0);
242 dependency_tracking
|= DEPEND_ENABLE
;
246 jcf_dependency_init (0);
247 dependency_tracking
|= DEPEND_SET_FILE
| DEPEND_ENABLE
;
251 jcf_dependency_print_dummies ();
255 jcf_dependency_set_target (arg
);
256 dependency_tracking
|= DEPEND_TARGET_SET
;
261 /* When -Wall given, enable -Wunused. We do this because the C
262 compiler does it, and people expect it. */
266 case OPT_fenable_assertions_
:
267 add_enable_assert (arg
, value
);
270 case OPT_fenable_assertions
:
271 add_enable_assert ("", value
);
274 case OPT_fdisable_assertions_
:
275 add_enable_assert (arg
, !value
);
278 case OPT_fdisable_assertions
:
279 add_enable_assert ("", !value
);
282 case OPT_fassume_compiled_
:
283 add_assume_compiled (arg
, !value
);
286 case OPT_fassume_compiled
:
287 add_assume_compiled ("", !value
);
290 case OPT_fbootclasspath_
:
291 jcf_path_bootclasspath_arg (arg
);
294 case OPT_faux_classpath
:
295 case OPT_fclasspath_
:
296 case OPT_fCLASSPATH_
:
297 jcf_path_classpath_arg (arg
);
300 case OPT_fcompile_resource_
:
305 if (!dump_switch_p (arg
))
314 jcf_path_extdirs_arg (arg
);
317 case OPT_foutput_class_dir_
:
318 /* FIXME: remove; this is handled by ecj1 now. */
325 case OPT_fsource_filename_
:
326 java_read_sourcefilenames (arg
);
330 if (cl_options
[code
].flags
& CL_Java
)
338 /* Global open file. */
344 /* FIXME: Indirect dispatch isn't yet compatible with static class
345 init optimization. */
346 if (flag_indirect_dispatch
)
347 always_initialize_class_p
= true;
349 if (!flag_indirect_dispatch
)
350 flag_indirect_classes
= false;
352 jcf_path_seal (v_flag
);
354 java_init_decl_processing ();
356 using_eh_for_cleanups ();
364 jcf_dependency_write ();
367 /* Buffer used by lang_printable_name. */
368 static char *decl_buf
= NULL
;
370 /* Allocated size of decl_buf. */
371 static int decl_buflen
= 0;
373 /* Length of used part of decl_buf; position for next character. */
374 static int decl_bufpos
= 0;
376 /* Append the string STR to decl_buf.
377 It length is given by LEN; -1 means the string is nul-terminated. */
380 put_decl_string (const char *str
, int len
)
384 if (decl_bufpos
+ len
>= decl_buflen
)
386 if (decl_buf
== NULL
)
388 decl_buflen
= len
+ 100;
389 decl_buf
= XNEWVEC (char, decl_buflen
);
394 decl_buf
= xrealloc (decl_buf
, decl_buflen
);
397 strcpy (decl_buf
+ decl_bufpos
, str
);
401 /* Append to decl_buf a printable name for NODE. */
404 put_decl_node (tree node
)
407 if (TREE_CODE (node
) == POINTER_TYPE
)
409 node
= TREE_TYPE (node
);
412 if (DECL_P (node
) && DECL_NAME (node
) != NULL_TREE
)
414 if (TREE_CODE (node
) == FUNCTION_DECL
)
416 /* We want to print the type the DECL belongs to. We don't do
417 that when we handle constructors. */
418 if (! DECL_CONSTRUCTOR_P (node
)
419 && ! DECL_ARTIFICIAL (node
) && DECL_CONTEXT (node
))
421 put_decl_node (TYPE_NAME (DECL_CONTEXT (node
)));
422 put_decl_string (".", 1);
424 if (! DECL_CONSTRUCTOR_P (node
))
425 put_decl_node (DECL_NAME (node
));
426 if (TREE_TYPE (node
) != NULL_TREE
)
429 tree args
= TYPE_ARG_TYPES (TREE_TYPE (node
));
430 if (TREE_CODE (TREE_TYPE (node
)) == METHOD_TYPE
)
431 args
= TREE_CHAIN (args
);
432 put_decl_string ("(", 1);
433 for ( ; args
!= end_params_node
; args
= TREE_CHAIN (args
), i
++)
436 put_decl_string (",", 1);
437 put_decl_node (TREE_VALUE (args
));
439 put_decl_string (")", 1);
443 put_decl_node (DECL_NAME (node
));
445 else if (TYPE_P (node
) && TYPE_NAME (node
) != NULL_TREE
)
447 if (TREE_CODE (node
) == RECORD_TYPE
&& TYPE_ARRAY_P (node
))
449 put_decl_node (TYPE_ARRAY_ELEMENT (node
));
450 put_decl_string("[]", 2);
452 else if (node
== promoted_byte_type_node
)
453 put_decl_string ("byte", 4);
454 else if (node
== promoted_short_type_node
)
455 put_decl_string ("short", 5);
456 else if (node
== promoted_char_type_node
)
457 put_decl_string ("char", 4);
458 else if (node
== promoted_boolean_type_node
)
459 put_decl_string ("boolean", 7);
460 else if (node
== void_type_node
&& was_pointer
)
461 put_decl_string ("null", 4);
463 put_decl_node (TYPE_NAME (node
));
465 else if (TREE_CODE (node
) == IDENTIFIER_NODE
)
466 put_decl_string (IDENTIFIER_POINTER (node
), IDENTIFIER_LENGTH (node
));
468 put_decl_string ("<unknown>", -1);
471 /* Return a user-friendly name for DECL.
472 The resulting string is only valid until the next call.
473 The value of the hook decl_printable_name is this function,
474 which is also called directly by java_print_error_function. */
477 lang_printable_name (tree decl
, int v
)
480 if (v
== 0 && TREE_CODE (decl
) == FUNCTION_DECL
)
481 put_decl_node (DECL_NAME (decl
));
483 put_decl_node (decl
);
484 put_decl_string ("", 1);
488 /* Print on stderr the current class and method context. This function
489 is the value of the hook print_error_function. */
491 static GTY(()) tree last_error_function_context
;
492 static GTY(()) tree last_error_function
;
494 java_print_error_function (diagnostic_context
*context ATTRIBUTE_UNUSED
,
497 /* Don't print error messages with bogus function prototypes. */
498 if (inhibit_error_function_printing
)
501 if (current_function_decl
!= NULL
502 && DECL_CONTEXT (current_function_decl
) != last_error_function_context
)
505 fprintf (stderr
, "%s: ", file
);
507 last_error_function_context
= DECL_CONTEXT (current_function_decl
);
508 fprintf (stderr
, "In class '%s':\n",
509 lang_printable_name (last_error_function_context
, 0));
511 if (last_error_function
!= current_function_decl
)
514 fprintf (stderr
, "%s: ", file
);
516 if (current_function_decl
== NULL
)
517 fprintf (stderr
, "At top level:\n");
520 const char *name
= lang_printable_name (current_function_decl
, 2);
521 fprintf (stderr
, "In %s '%s':\n",
522 (DECL_CONSTRUCTOR_P (current_function_decl
) ? "constructor"
527 last_error_function
= current_function_decl
;
532 /* Called to install the PRINT_ERROR_FUNCTION hook differently
533 according to LEVEL. LEVEL is 1 during early parsing, when function
534 prototypes aren't fully resolved. java_print_error_function is set
535 so it doesn't print incomplete function prototypes. When LEVEL is
536 2, function prototypes are fully resolved and can be printed when
540 lang_init_source (int level
)
542 inhibit_error_function_printing
= (level
== 1);
546 java_init_options (unsigned int argc ATTRIBUTE_UNUSED
,
547 const char **argv ATTRIBUTE_UNUSED
)
549 flag_bounds_check
= 1;
551 flag_non_call_exceptions
= 1;
553 /* In Java floating point operations never trap. */
554 flag_trapping_math
= 0;
556 /* In Java arithmetic overflow always wraps around. */
559 /* Java requires left-to-right evaluation of subexpressions. */
560 flag_evaluation_order
= 1;
562 /* Unit at a time is disabled for Java because it is considered
564 no_unit_at_a_time_default
= 1;
571 /* Post-switch processing. */
573 java_post_options (const char **pfilename
)
575 const char *filename
= *pfilename
;
577 /* Use tree inlining. */
580 if (flag_inline_functions
)
581 flag_inline_trees
= 2;
583 /* An absolute requirement: if we're not using indirect dispatch, we
584 must always verify everything. */
585 if (! flag_indirect_dispatch
)
586 flag_verify_invocations
= true;
588 if (flag_reduced_reflection
)
590 if (flag_indirect_dispatch
)
591 error ("-findirect-dispatch is incompatible "
592 "with -freduced-reflection");
594 error ("-fjni is incompatible with -freduced-reflection");
597 /* Open input file. */
599 if (filename
== 0 || !strcmp (filename
, "-"))
604 if (dependency_tracking
)
605 error ("can't do dependency tracking with input from stdin");
609 if (dependency_tracking
)
613 /* If the target is set and the output filename is set, then
614 there's no processing to do here. Otherwise we must
615 compute one or the other. */
616 if (! ((dependency_tracking
& DEPEND_TARGET_SET
)
617 && (dependency_tracking
& DEPEND_FILE_ALREADY_SET
)))
619 dot
= strrchr (filename
, '.');
621 error ("couldn't determine target name for dependency tracking");
624 char *buf
= XNEWVEC (char, dot
- filename
+
625 3 + sizeof (TARGET_OBJECT_SUFFIX
));
626 strncpy (buf
, filename
, dot
- filename
);
628 /* If emitting class files, we might have multiple
629 targets. The class generation code takes care of
630 registering them. Otherwise we compute the
632 if ((dependency_tracking
& DEPEND_TARGET_SET
))
636 strcpy (buf
+ (dot
- filename
), TARGET_OBJECT_SUFFIX
);
637 jcf_dependency_set_target (buf
);
640 if ((dependency_tracking
& DEPEND_FILE_ALREADY_SET
))
642 else if ((dependency_tracking
& DEPEND_SET_FILE
))
644 strcpy (buf
+ (dot
- filename
), ".d");
645 jcf_dependency_set_dep_file (buf
);
648 jcf_dependency_set_dep_file ("-");
655 #ifdef USE_MAPPED_LOCATION
656 linemap_add (line_table
, LC_ENTER
, false, filename
, 0);
657 linemap_add (line_table
, LC_RENAME
, false, "<built-in>", 0);
660 /* Initialize the compiler back end. */
664 /* Return either DECL or its known constant value (if it has one). */
667 decl_constant_value (tree decl
)
669 if (/* Don't change a variable array bound or initial value to a constant
670 in a place where a variable is invalid. */
671 current_function_decl
!= 0
672 && ! TREE_THIS_VOLATILE (decl
)
673 && TREE_READONLY (decl
)
674 && DECL_INITIAL (decl
) != 0
675 && TREE_CODE (DECL_INITIAL (decl
)) != ERROR_MARK
676 /* This is invalid if initial value is not constant.
677 If it has either a function call, a memory reference,
678 or a variable, then re-evaluating it could give different results. */
679 && TREE_CONSTANT (DECL_INITIAL (decl
))
680 /* Check for cases where this is sub-optimal, even though valid. */
681 && TREE_CODE (DECL_INITIAL (decl
)) != CONSTRUCTOR
)
682 return DECL_INITIAL (decl
);
686 /* Every call to a static constructor has an associated boolean
687 variable which is in the outermost scope of the calling method.
688 This variable is used to avoid multiple calls to the static
689 constructor for each class.
691 It looks something like this:
695 boolean dummy = OtherClass.is_initialized;
700 OtherClass.initialize();
702 ... use OtherClass.data ...
705 Each of these boolean variables has an entry in the
706 DECL_FUNCTION_INIT_TEST_TABLE of a method. When inlining a method
707 we must merge the DECL_FUNCTION_INIT_TEST_TABLE from the function
708 being inlined and create the boolean variables in the outermost
709 scope of the method being inlined into. */
711 /* Create a mapping from a boolean variable in a method being inlined
712 to one in the scope of the method being inlined into. */
715 merge_init_test_initialization (void **entry
, void *x
)
717 struct treetreehash_entry
*ite
= (struct treetreehash_entry
*) *entry
;
718 splay_tree decl_map
= (splay_tree
)x
;
720 tree
*init_test_decl
;
722 /* See if we have remapped this declaration. If we haven't there's
723 a bug in the inliner. */
724 n
= splay_tree_lookup (decl_map
, (splay_tree_key
) ite
->value
);
727 /* Create a new entry for the class and its remapped boolean
728 variable. If we already have a mapping for this class we've
729 already initialized it, so don't overwrite the value. */
730 init_test_decl
= java_treetreehash_new
731 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl
), ite
->key
);
732 if (!*init_test_decl
)
733 *init_test_decl
= (tree
)n
->value
;
735 /* This fixes a weird case.
737 The front end assumes that once we have called a method that
738 initializes some class, we can assume the class is initialized. It
739 does this by setting the DECL_INITIAL of the init_test_decl for that
740 class, and no initializations are emitted for that class.
742 However, what if the method that is supposed to do the initialization
743 is itself inlined in the caller? When expanding the called method
744 we'll assume that the class initialization has already been done,
745 because the DECL_INITIAL of the init_test_decl is set.
747 To fix this we remove the DECL_INITIAL (in the caller scope) of all
748 the init_test_decls corresponding to classes initialized by the
749 inlined method. This makes the caller no longer assume that the
750 method being inlined does any class initializations. */
751 DECL_INITIAL (*init_test_decl
) = NULL
;
756 /* Merge the DECL_FUNCTION_INIT_TEST_TABLE from the function we're
760 java_inlining_merge_static_initializers (tree fn
, void *decl_map
)
763 (DECL_FUNCTION_INIT_TEST_TABLE (fn
),
764 merge_init_test_initialization
, decl_map
);
767 /* Lookup a DECL_FUNCTION_INIT_TEST_TABLE entry in the method we're
768 inlining into. If we already have a corresponding entry in that
769 class we don't need to create another one, so we create a mapping
770 from the variable in the inlined class to the corresponding
774 inline_init_test_initialization (void **entry
, void *x
)
776 struct treetreehash_entry
*ite
= (struct treetreehash_entry
*) *entry
;
777 splay_tree decl_map
= (splay_tree
)x
;
779 tree h
= java_treetreehash_find
780 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl
), ite
->key
);
783 splay_tree_insert (decl_map
,
784 (splay_tree_key
) ite
->value
,
785 (splay_tree_value
) h
);
789 /* Look up the boolean variables in the DECL_FUNCTION_INIT_TEST_TABLE
790 of a method being inlined. For each hone, if we already have a
791 variable associated with the same class in the method being inlined
792 into, create a new mapping for it. */
795 java_inlining_map_static_initializers (tree fn
, void *decl_map
)
798 (DECL_FUNCTION_INIT_TEST_TABLE (fn
),
799 inline_init_test_initialization
, decl_map
);
802 /* Avoid voluminous output for deep recursion of compound exprs. */
805 dump_compound_expr (dump_info_p di
, tree t
)
811 switch (TREE_CODE (TREE_OPERAND (t
, i
)))
814 dump_compound_expr (di
, TREE_OPERAND (t
, i
));
818 dump_child ("expr", TREE_OPERAND (t
, i
));
824 java_dump_tree (void *dump_info
, tree t
)
827 dump_info_p di
= (dump_info_p
) dump_info
;
829 /* Figure out what kind of node this is. */
830 code
= TREE_CODE (t
);
835 dump_child ("args", DECL_ARGUMENTS (t
));
836 if (DECL_EXTERNAL (t
))
837 dump_string (di
, "undefined");
839 dump_string (di
, "extern");
841 dump_string (di
, "static");
842 if (DECL_LANG_SPECIFIC (t
))
843 dump_child ("body", DECL_FUNCTION_BODY (t
));
844 if (DECL_LANG_SPECIFIC (t
) && !dump_flag (di
, TDF_SLIM
, t
))
845 dump_child ("inline body", DECL_SAVED_TREE (t
));
849 dump_child ("expr", TREE_OPERAND (t
, 0));
853 dump_child ("goto", TREE_OPERAND (t
, 0));
857 dump_child ("label", TREE_OPERAND (t
, 0));
861 if (BLOCK_EXPR_BODY (t
))
863 tree local
= BLOCK_VARS (t
);
866 tree next
= TREE_CHAIN (local
);
867 dump_child ("var", local
);
872 tree block
= BLOCK_EXPR_BODY (t
);
873 dump_child ("body", block
);
874 block
= TREE_CHAIN (block
);
880 if (!dump_flag (di
, TDF_SLIM
, t
))
882 dump_compound_expr (di
, t
);
891 /* Java calls can't, in general, be sibcalls because we need an
892 accurate stack trace in order to guarantee correct operation of
893 methods such as Class.forName(String) and
894 SecurityManager.getClassContext(). */
897 java_decl_ok_for_sibcall (const_tree decl
)
899 return (decl
!= NULL
&& DECL_CONTEXT (decl
) == output_class
900 && DECL_INLINE (decl
));
903 /* Given a call_expr, try to figure out what its target might be. In
904 the case of an indirection via the atable, search for the decl. If
905 the decl is external, we return NULL. If we don't, the optimizer
906 will replace the indirection with a direct call, which undoes the
907 purpose of the atable indirection. */
909 java_get_callee_fndecl (const_tree call_expr
)
911 tree method
, table
, element
, atable_methods
;
915 /* FIXME: This is disabled because we end up passing calls through
916 the PLT, and we do NOT want to do that. */
919 if (TREE_CODE (call_expr
) != CALL_EXPR
)
921 method
= CALL_EXPR_FN (call_expr
);
923 if (TREE_CODE (method
) != ARRAY_REF
)
925 table
= TREE_OPERAND (method
, 0);
926 if (! DECL_LANG_SPECIFIC(table
)
927 || !DECL_OWNER (table
)
928 || TYPE_ATABLE_DECL (DECL_OWNER (table
)) != table
)
931 atable_methods
= TYPE_ATABLE_METHODS (DECL_OWNER (table
));
932 index
= TREE_INT_CST_LOW (TREE_OPERAND (method
, 1));
934 /* FIXME: Replace this for loop with a hash table lookup. */
935 for (element
= atable_methods
; element
; element
= TREE_CHAIN (element
))
939 tree purpose
= TREE_PURPOSE (element
);
940 if (TREE_CODE (purpose
) == FUNCTION_DECL
941 && ! DECL_EXTERNAL (purpose
))
953 /* Clear the binding stack. */
955 java_clear_binding_stack (void)
957 while (!global_bindings_p ())
961 #include "gt-java-lang.h"