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);
70 static void java_clear_binding_stack (void);
72 #ifndef TARGET_OBJECT_SUFFIX
73 # define TARGET_OBJECT_SUFFIX ".o"
76 /* Table indexed by tree code giving a string containing a character
77 classifying the tree code. Possibilities are
78 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
80 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
82 const char tree_code_type[] = {
85 #include "java-tree.def"
89 /* Table indexed by tree code giving number of expression
90 operands beyond the fixed part of the node structure.
91 Not used for types or decls. */
93 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
95 const unsigned char tree_code_length[] = {
98 #include "java-tree.def"
102 /* Names of tree components.
103 Used for printing out the tree and error messages. */
104 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
106 const char *const tree_code_name[] = {
109 #include "java-tree.def"
113 /* Used to avoid printing error messages with bogus function
114 prototypes. Starts out false. */
115 static bool inhibit_error_function_printing;
117 int compiling_from_source;
119 const char *resource_name;
121 int flag_emit_class_files = 0;
123 /* Nonzero if input file is a file with a list of filenames to compile. */
125 int flag_filelist_file = 0;
127 /* When nonzero, we emit xref strings. Values of the flag for xref
128 backends are defined in xref_flag_table, xref.c. */
130 int flag_emit_xref = 0;
132 /* When nonzero, -Wall was turned on. */
135 /* When nonzero, check for redundant modifier uses. */
136 int flag_redundant = 0;
138 /* When nonzero, call a library routine to do integer divisions. */
139 int flag_use_divide_subroutine = 1;
141 /* When nonzero, generate code for the Boehm GC. */
142 int flag_use_boehm_gc = 0;
144 /* When nonzero, assume the runtime uses a hash table to map an
145 object to its synchronization structure. */
146 int flag_hash_synchronization;
148 /* When nonzero, permit the use of the assert keyword. */
151 /* When nonzero, assume all native functions are implemented with
155 /* When nonzero, warn when source file is newer than matching class
159 /* When nonzero, generate checks for references to NULL. */
160 int flag_check_references = 0;
162 /* The encoding of the source file. */
163 const char *current_encoding = NULL;
165 /* When nonzero, report the now deprecated empty statements. */
166 int flag_extraneous_semicolon;
168 /* When nonzero, report use of deprecated classes, methods, or fields. */
169 int flag_deprecated = 1;
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 /* FIXME: Make this work with gimplify. */
177 int flag_optimize_sci = 0;
179 /* When nonzero, use offset tables for virtual method calls
180 in order to improve binary compatibility. */
181 int flag_indirect_dispatch = 0;
183 /* When zero, don't generate runtime array store checks. */
184 int flag_store_check = 1;
186 /* When nonzero, print extra version information. */
187 static int v_flag = 0;
189 /* Set nonzero if the user specified -finline-functions on the command
191 int flag_really_inline = 0;
195 /* Variable controlling how dependency tracking is enabled in
197 static int dependency_tracking = 0;
199 /* Flag values for DEPENDENCY_TRACKING. */
200 #define DEPEND_SET_FILE 1
201 #define DEPEND_ENABLE 2
202 #define DEPEND_TARGET_SET 4
203 #define DEPEND_FILE_ALREADY_SET 8
205 struct language_function GTY(())
210 #undef LANG_HOOKS_NAME
211 #define LANG_HOOKS_NAME "GNU Java"
212 #undef LANG_HOOKS_INIT
213 #define LANG_HOOKS_INIT java_init
214 #undef LANG_HOOKS_FINISH
215 #define LANG_HOOKS_FINISH java_finish
216 #undef LANG_HOOKS_INIT_OPTIONS
217 #define LANG_HOOKS_INIT_OPTIONS java_init_options
218 #undef LANG_HOOKS_HANDLE_OPTION
219 #define LANG_HOOKS_HANDLE_OPTION java_handle_option
220 #undef LANG_HOOKS_POST_OPTIONS
221 #define LANG_HOOKS_POST_OPTIONS java_post_options
222 #undef LANG_HOOKS_PARSE_FILE
223 #define LANG_HOOKS_PARSE_FILE java_parse_file
224 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
225 #define LANG_HOOKS_UNSAFE_FOR_REEVAL java_unsafe_for_reeval
226 #undef LANG_HOOKS_MARK_ADDRESSABLE
227 #define LANG_HOOKS_MARK_ADDRESSABLE java_mark_addressable
228 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
229 #define LANG_HOOKS_TRUTHVALUE_CONVERSION java_truthvalue_conversion
230 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
231 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL java_dup_lang_specific_decl
232 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
233 #define LANG_HOOKS_DECL_PRINTABLE_NAME lang_printable_name
234 #undef LANG_HOOKS_PRINT_ERROR_FUNCTION
235 #define LANG_HOOKS_PRINT_ERROR_FUNCTION java_print_error_function
236 #undef LANG_HOOKS_CAN_USE_BIT_FIELDS_P
237 #define LANG_HOOKS_CAN_USE_BIT_FIELDS_P java_can_use_bit_fields_p
239 #undef LANG_HOOKS_TYPE_FOR_MODE
240 #define LANG_HOOKS_TYPE_FOR_MODE java_type_for_mode
241 #undef LANG_HOOKS_TYPE_FOR_SIZE
242 #define LANG_HOOKS_TYPE_FOR_SIZE java_type_for_size
243 #undef LANG_HOOKS_SIGNED_TYPE
244 #define LANG_HOOKS_SIGNED_TYPE java_signed_type
245 #undef LANG_HOOKS_UNSIGNED_TYPE
246 #define LANG_HOOKS_UNSIGNED_TYPE java_unsigned_type
247 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
248 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE java_signed_or_unsigned_type
250 #undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
251 #define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
253 #undef LANG_HOOKS_GIMPLIFY_EXPR
254 #define LANG_HOOKS_GIMPLIFY_EXPR java_gimplify_expr
256 #undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
257 #define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES java_tree_inlining_walk_subtrees
259 #undef LANG_HOOKS_DECL_OK_FOR_SIBCALL
260 #define LANG_HOOKS_DECL_OK_FOR_SIBCALL java_decl_ok_for_sibcall
262 #undef LANG_HOOKS_GET_CALLEE_FNDECL
263 #define LANG_HOOKS_GET_CALLEE_FNDECL java_get_callee_fndecl
265 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
266 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION java_expand_body
268 #undef LANG_HOOKS_CLEAR_BINDING_STACK
269 #define LANG_HOOKS_CLEAR_BINDING_STACK java_clear_binding_stack
271 /* Each front end provides its own. */
272 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
275 * process java-specific compiler command-line options
276 * return 0, but do not complain if the option is not recognized.
279 java_handle_option (size_t scode, const char *arg, int value)
281 enum opt_code code = (enum opt_code) scode;
289 jcf_path_include_arg (arg);
293 jcf_dependency_init (1);
294 dependency_tracking |= DEPEND_ENABLE;
298 jcf_dependency_init (1);
299 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
303 jcf_dependency_set_dep_file (arg);
304 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
308 jcf_dependency_init (0);
309 dependency_tracking |= DEPEND_ENABLE;
313 jcf_dependency_init (0);
314 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
318 jcf_dependency_print_dummies ();
322 jcf_dependency_set_target (arg);
323 dependency_tracking |= DEPEND_TARGET_SET;
328 flag_redundant = value;
329 flag_extraneous_semicolon = value;
330 /* When -Wall given, enable -Wunused. We do this because the C
331 compiler does it, and people expect it. */
335 case OPT_Wdeprecated:
336 flag_deprecated = value;
339 case OPT_Wextraneous_semicolon:
340 flag_extraneous_semicolon = value;
343 case OPT_Wout_of_date:
347 case OPT_Wredundant_modifiers:
348 flag_redundant = value;
355 case OPT_fenable_assertions_:
356 add_enable_assert (arg, value);
359 case OPT_fenable_assertions:
360 add_enable_assert ("", value);
363 case OPT_fdisable_assertions_:
364 add_enable_assert (arg, !value);
367 case OPT_fdisable_assertions:
368 add_enable_assert ("", !value);
371 case OPT_fassume_compiled_:
372 add_assume_compiled (arg, !value);
375 case OPT_fassume_compiled:
376 add_assume_compiled ("", !value);
379 case OPT_fbootclasspath_:
380 jcf_path_bootclasspath_arg (arg);
383 case OPT_fcheck_references:
384 flag_check_references = value;
387 case OPT_fclasspath_:
388 case OPT_fCLASSPATH_:
389 jcf_path_classpath_arg (arg);
392 case OPT_fcompile_resource_:
397 if (!dump_switch_p (arg))
401 case OPT_femit_class_file:
402 case OPT_femit_class_files:
403 flag_emit_class_files = value;
407 current_encoding = arg;
411 jcf_path_extdirs_arg (arg);
414 case OPT_ffilelist_file:
415 flag_filelist_file = value;
418 case OPT_fforce_classes_archive_check:
419 flag_force_classes_archive_check = value;
422 case OPT_fhash_synchronization:
423 flag_hash_synchronization = value;
426 case OPT_findirect_dispatch:
427 flag_indirect_dispatch = value;
430 case OPT_finline_functions:
431 flag_inline_functions = value;
432 flag_really_inline = value;
439 case OPT_foptimize_static_class_initialization:
440 flag_optimize_sci = value;
443 case OPT_foutput_class_dir_:
444 jcf_write_base_directory = arg;
447 case OPT_fstore_check:
448 flag_store_check = value;
451 case OPT_fuse_boehm_gc:
452 flag_use_boehm_gc = value;
455 case OPT_fuse_divide_subroutine:
456 flag_use_divide_subroutine = value;
467 /* Global open file. */
474 extern int flag_minimal_debug;
475 flag_minimal_debug = 0;
478 if (flag_inline_functions)
479 flag_inline_trees = 1;
481 /* FIXME: Indirect dispatch isn't yet compatible with static class
482 init optimization. */
483 if (flag_indirect_dispatch)
484 always_initialize_class_p = true;
486 /* Force minimum function alignment if g++ uses the least significant
487 bit of function pointers to store the virtual bit. This is required
488 to keep vtables compatible. */
489 if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
490 && force_align_functions_log < 1)
491 force_align_functions_log = 1;
493 jcf_path_seal (v_flag);
495 java_init_decl_processing ();
497 using_eh_for_cleanups ();
505 jcf_dependency_write ();
508 /* Buffer used by lang_printable_name. */
509 static char *decl_buf = NULL;
511 /* Allocated size of decl_buf. */
512 static int decl_buflen = 0;
514 /* Length of used part of decl_buf; position for next character. */
515 static int decl_bufpos = 0;
517 /* Append the string STR to decl_buf.
518 It length is given by LEN; -1 means the string is nul-terminated. */
521 put_decl_string (const char *str, int len)
525 if (decl_bufpos + len >= decl_buflen)
527 if (decl_buf == NULL)
529 decl_buflen = len + 100;
530 decl_buf = xmalloc (decl_buflen);
535 decl_buf = xrealloc (decl_buf, decl_buflen);
538 strcpy (decl_buf + decl_bufpos, str);
542 /* Append to decl_buf a printable name for NODE. */
545 put_decl_node (tree node)
548 if (TREE_CODE (node) == POINTER_TYPE)
550 node = TREE_TYPE (node);
553 if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd'
554 && DECL_NAME (node) != NULL_TREE)
556 if (TREE_CODE (node) == FUNCTION_DECL)
558 /* We want to print the type the DECL belongs to. We don't do
559 that when we handle constructors. */
560 if (! DECL_CONSTRUCTOR_P (node)
561 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
563 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
564 put_decl_string (".", 1);
566 if (! DECL_CONSTRUCTOR_P (node))
567 put_decl_node (DECL_NAME (node));
568 if (TREE_TYPE (node) != NULL_TREE)
571 tree args = TYPE_ARG_TYPES (TREE_TYPE (node));
572 if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE)
573 args = TREE_CHAIN (args);
574 put_decl_string ("(", 1);
575 for ( ; args != end_params_node; args = TREE_CHAIN (args), i++)
578 put_decl_string (",", 1);
579 put_decl_node (TREE_VALUE (args));
581 put_decl_string (")", 1);
585 put_decl_node (DECL_NAME (node));
587 else if (TREE_CODE_CLASS (TREE_CODE (node)) == 't'
588 && TYPE_NAME (node) != NULL_TREE)
590 if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node))
592 put_decl_node (TYPE_ARRAY_ELEMENT (node));
593 put_decl_string("[]", 2);
595 else if (node == promoted_byte_type_node)
596 put_decl_string ("byte", 4);
597 else if (node == promoted_short_type_node)
598 put_decl_string ("short", 5);
599 else if (node == promoted_char_type_node)
600 put_decl_string ("char", 4);
601 else if (node == promoted_boolean_type_node)
602 put_decl_string ("boolean", 7);
603 else if (node == void_type_node && was_pointer)
604 put_decl_string ("null", 4);
606 put_decl_node (TYPE_NAME (node));
608 else if (TREE_CODE (node) == IDENTIFIER_NODE)
609 put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node));
611 put_decl_string ("<unknown>", -1);
614 /* Return a user-friendly name for DECL.
615 The resulting string is only valid until the next call.
616 The value of the hook decl_printable_name is this function,
617 which is also called directly by java_print_error_function. */
620 lang_printable_name (tree decl, int v __attribute__ ((__unused__)))
623 put_decl_node (decl);
624 put_decl_string ("", 1);
628 /* Does the same thing that lang_printable_name, but add a leading
629 space to the DECL name string -- With Leading Space. */
632 lang_printable_name_wls (tree decl, int v __attribute__ ((__unused__)))
635 put_decl_node (decl);
636 put_decl_string ("", 1);
641 /* Print on stderr the current class and method context. This function
642 is the value of the hook print_error_function. */
644 static GTY(()) tree last_error_function_context;
645 static GTY(()) tree last_error_function;
647 java_print_error_function (diagnostic_context *context ATTRIBUTE_UNUSED,
650 /* Don't print error messages with bogus function prototypes. */
651 if (inhibit_error_function_printing)
654 if (current_function_decl != NULL
655 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
658 fprintf (stderr, "%s: ", file);
660 last_error_function_context = DECL_CONTEXT (current_function_decl);
661 fprintf (stderr, "In class `%s':\n",
662 lang_printable_name (last_error_function_context, 0));
664 if (last_error_function != current_function_decl)
667 fprintf (stderr, "%s: ", file);
669 if (current_function_decl == NULL)
670 fprintf (stderr, "At top level:\n");
673 const char *name = lang_printable_name (current_function_decl, 2);
674 fprintf (stderr, "In %s `%s':\n",
675 (DECL_CONSTRUCTOR_P (current_function_decl) ? "constructor"
680 last_error_function = current_function_decl;
685 /* Called to install the PRINT_ERROR_FUNCTION hook differently
686 according to LEVEL. LEVEL is 1 during early parsing, when function
687 prototypes aren't fully resolved. java_print_error_function is set
688 so it doesn't print incomplete function prototypes. When LEVEL is
689 2, function prototypes are fully resolved and can be printed when
693 lang_init_source (int level)
695 inhibit_error_function_printing = (level == 1);
699 java_init_options (unsigned int argc ATTRIBUTE_UNUSED,
700 const char **argv ATTRIBUTE_UNUSED)
702 flag_bounds_check = 1;
704 flag_non_call_exceptions = 1;
706 /* In Java floating point operations never trap. */
707 flag_trapping_math = 0;
709 /* In Java arithmetic overflow always wraps around. */
712 /* Java requires left-to-right evaluation of subexpressions. */
713 flag_evaluation_order = 1;
721 java_can_use_bit_fields_p (void)
723 /* The bit-field optimizations cause problems when generating class
725 return flag_emit_class_files ? false : true;
728 /* Post-switch processing. */
730 java_post_options (const char **pfilename)
732 const char *filename = *pfilename;
734 /* Use tree inlining. */
737 if (flag_inline_functions)
739 flag_inline_trees = 2;
740 flag_inline_functions = 0;
743 /* Open input file. */
745 if (filename == 0 || !strcmp (filename, "-"))
750 if (dependency_tracking)
751 error ("can't do dependency tracking with input from stdin");
755 if (dependency_tracking)
759 /* If the target is set and the output filename is set, then
760 there's no processing to do here. Otherwise we must
761 compute one or the other. */
762 if (! ((dependency_tracking & DEPEND_TARGET_SET)
763 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
765 dot = strrchr (filename, '.');
767 error ("couldn't determine target name for dependency tracking");
770 char *buf = xmalloc (dot - filename +
771 3 + sizeof (TARGET_OBJECT_SUFFIX));
772 strncpy (buf, filename, dot - filename);
774 /* If emitting class files, we might have multiple
775 targets. The class generation code takes care of
776 registering them. Otherwise we compute the
778 if ((dependency_tracking & DEPEND_TARGET_SET))
780 else if (flag_emit_class_files)
781 jcf_dependency_set_target (NULL);
784 strcpy (buf + (dot - filename), TARGET_OBJECT_SUFFIX);
785 jcf_dependency_set_target (buf);
788 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
790 else if ((dependency_tracking & DEPEND_SET_FILE))
792 strcpy (buf + (dot - filename), ".d");
793 jcf_dependency_set_dep_file (buf);
796 jcf_dependency_set_dep_file ("-");
804 /* Initialize the compiler back end. */
808 /* Return either DECL or its known constant value (if it has one). */
811 decl_constant_value (tree decl)
813 if (/* Don't change a variable array bound or initial value to a constant
814 in a place where a variable is invalid. */
815 current_function_decl != 0
816 && ! TREE_THIS_VOLATILE (decl)
817 && TREE_READONLY (decl)
818 && DECL_INITIAL (decl) != 0
819 && TREE_CODE (DECL_INITIAL (decl)) != ERROR_MARK
820 /* This is invalid if initial value is not constant.
821 If it has either a function call, a memory reference,
822 or a variable, then re-evaluating it could give different results. */
823 && TREE_CONSTANT (DECL_INITIAL (decl))
824 /* Check for cases where this is sub-optimal, even though valid. */
825 && TREE_CODE (DECL_INITIAL (decl)) != CONSTRUCTOR)
826 return DECL_INITIAL (decl);
830 /* Walk the language specific tree nodes during inlining. */
833 java_tree_inlining_walk_subtrees (tree *tp ATTRIBUTE_UNUSED,
834 int *subtrees ATTRIBUTE_UNUSED,
835 walk_tree_fn func ATTRIBUTE_UNUSED,
836 void *data ATTRIBUTE_UNUSED,
837 void *htab ATTRIBUTE_UNUSED)
842 #define WALK_SUBTREE(NODE) \
845 result = walk_tree (&(NODE), func, data, htab); \
855 code = TREE_CODE (t);
859 WALK_SUBTREE (BLOCK_EXPR_BODY (t));
869 /* Called from unsafe_for_reeval. */
871 java_unsafe_for_reeval (tree t)
873 switch (TREE_CODE (t))
876 /* Our expander tries to expand the variables twice. Boom. */
877 if (BLOCK_EXPR_DECLS (t) != NULL)
879 return unsafe_for_reeval (BLOCK_EXPR_BODY (t));
888 /* Every call to a static constructor has an associated boolean
889 variable which is in the outermost scope of the calling method.
890 This variable is used to avoid multiple calls to the static
891 constructor for each class.
893 It looks something like this:
897 boolean dummy = OtherClass.is_initialized;
902 OtherClass.initialize();
904 ... use OtherClass.data ...
907 Each of these boolean variables has an entry in the
908 DECL_FUNCTION_INIT_TEST_TABLE of a method. When inlining a method
909 we must merge the DECL_FUNCTION_INIT_TEST_TABLE from the function
910 being inlined and create the boolean variables in the outermost
911 scope of the method being inlined into. */
913 /* Create a mapping from a boolean variable in a method being inlined
914 to one in the scope of the method being inlined into. */
917 merge_init_test_initialization (void **entry, void *x)
919 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
920 splay_tree decl_map = (splay_tree)x;
922 tree *init_test_decl;
924 /* See if we have remapped this declaration. If we haven't there's
925 a bug in the inliner. */
926 n = splay_tree_lookup (decl_map, (splay_tree_key) ite->value);
930 /* Create a new entry for the class and its remapped boolean
931 variable. If we already have a mapping for this class we've
932 already initialized it, so don't overwrite the value. */
933 init_test_decl = java_treetreehash_new
934 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
935 if (!*init_test_decl)
936 *init_test_decl = (tree)n->value;
938 /* This fixes a weird case.
940 The front end assumes that once we have called a method that
941 initializes some class, we can assume the class is initialized. It
942 does this by setting the DECL_INITIAL of the init_test_decl for that
943 class, and no initializations are emitted for that class.
945 However, what if the method that is suppoed to do the initialization
946 is itself inlined in the caller? When expanding the called method
947 we'll assume that the class initialization has already been done,
948 because the DECL_INITIAL of the init_test_decl is set.
950 To fix this we remove the DECL_INITIAL (in the caller scope) of all
951 the init_test_decls corresponding to classes initialized by the
952 inlined method. This makes the caller no longer assume that the
953 method being inlined does any class initializations. */
954 DECL_INITIAL (*init_test_decl) = NULL;
959 /* Merge the DECL_FUNCTION_INIT_TEST_TABLE from the function we're
963 java_inlining_merge_static_initializers (tree fn, void *decl_map)
966 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
967 merge_init_test_initialization, decl_map);
970 /* Lookup a DECL_FUNCTION_INIT_TEST_TABLE entry in the method we're
971 inlining into. If we already have a corresponding entry in that
972 class we don't need to create another one, so we create a mapping
973 from the variable in the inlined class to the corresponding
977 inline_init_test_initialization (void **entry, void *x)
979 struct treetreehash_entry *ite = (struct treetreehash_entry *) *entry;
980 splay_tree decl_map = (splay_tree)x;
982 tree h = java_treetreehash_find
983 (DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
986 splay_tree_insert (decl_map,
987 (splay_tree_key) ite->value,
988 (splay_tree_value) h);
992 /* Look up the boolean variables in the DECL_FUNCTION_INIT_TEST_TABLE
993 of a method being inlined. For each hone, if we already have a
994 variable associated with the same class in the method being inlined
995 into, create a new mapping for it. */
998 java_inlining_map_static_initializers (tree fn, void *decl_map)
1001 (DECL_FUNCTION_INIT_TEST_TABLE (fn),
1002 inline_init_test_initialization, decl_map);
1005 /* Avoid voluminous output for deep recursion of compound exprs. */
1008 dump_compound_expr (dump_info_p di, tree t)
1014 switch (TREE_CODE (TREE_OPERAND (t, i)))
1017 dump_compound_expr (di, TREE_OPERAND (t, i));
1020 case EXPR_WITH_FILE_LOCATION:
1022 tree wfl_node = EXPR_WFL_NODE (TREE_OPERAND (t, i));
1023 dump_child ("expr", wfl_node);
1028 dump_child ("expr", TREE_OPERAND (t, i));
1034 java_dump_tree (void *dump_info, tree t)
1036 enum tree_code code;
1037 dump_info_p di = (dump_info_p) dump_info;
1039 /* Figure out what kind of node this is. */
1040 code = TREE_CODE (t);
1045 dump_child ("args", DECL_ARGUMENTS (t));
1046 if (DECL_EXTERNAL (t))
1047 dump_string (di, "undefined");
1048 if (TREE_PUBLIC (t))
1049 dump_string (di, "extern");
1051 dump_string (di, "static");
1052 if (DECL_LANG_SPECIFIC (t))
1053 dump_child ("body", DECL_FUNCTION_BODY (t));
1054 if (DECL_LANG_SPECIFIC (t) && !dump_flag (di, TDF_SLIM, t))
1055 dump_child ("inline body", DECL_SAVED_TREE (t));
1059 dump_child ("expr", TREE_OPERAND (t, 0));
1063 dump_child ("goto", TREE_OPERAND (t, 0));
1067 dump_child ("label", TREE_OPERAND (t, 0));
1070 case LABELED_BLOCK_EXPR:
1071 dump_child ("label", TREE_OPERAND (t, 0));
1072 dump_child ("block", TREE_OPERAND (t, 1));
1075 case EXIT_BLOCK_EXPR:
1076 dump_child ("block", TREE_OPERAND (t, 0));
1077 dump_child ("val", TREE_OPERAND (t, 1));
1081 if (BLOCK_EXPR_BODY (t))
1083 tree local = BLOCK_VARS (t);
1086 tree next = TREE_CHAIN (local);
1087 dump_child ("var", local);
1092 tree block = BLOCK_EXPR_BODY (t);
1093 dump_child ("body", block);
1094 block = TREE_CHAIN (block);
1100 if (!dump_flag (di, TDF_SLIM, t))
1102 dump_compound_expr (di, t);
1111 /* Java calls can't, in general, be sibcalls because we need an
1112 accurate stack trace in order to guarantee correct operation of
1113 methods such as Class.forName(String) and
1114 SecurityManager.getClassContext(). */
1117 java_decl_ok_for_sibcall (tree decl)
1119 return decl != NULL && DECL_CONTEXT (decl) == output_class;
1122 /* Given a call_expr, try to figure out what its target might be. In
1123 the case of an indirection via the atable, search for the decl. If
1124 the decl is external, we return NULL. If we don't, the optimizer
1125 will replace the indirection with a direct call, which undoes the
1126 purpose of the atable indirection. */
1128 java_get_callee_fndecl (tree call_expr)
1130 tree method, table, element, atable_methods;
1132 HOST_WIDE_INT index;
1134 if (TREE_CODE (call_expr) != CALL_EXPR)
1136 method = TREE_OPERAND (call_expr, 0);
1137 STRIP_NOPS (method);
1138 if (TREE_CODE (method) != ARRAY_REF)
1140 table = TREE_OPERAND (method, 0);
1141 if (! DECL_LANG_SPECIFIC(table)
1142 || !DECL_OWNER (table)
1143 || TYPE_ATABLE_DECL (DECL_OWNER (table)) != table)
1146 atable_methods = TYPE_ATABLE_METHODS (DECL_OWNER (table));
1147 index = TREE_INT_CST_LOW (TREE_OPERAND (method, 1));
1149 /* FIXME: Replace this for loop with a hash table lookup. */
1150 for (element = atable_methods; element; element = TREE_CHAIN (element))
1154 tree purpose = TREE_PURPOSE (element);
1155 if (TREE_CODE (purpose) == FUNCTION_DECL
1156 && ! DECL_EXTERNAL (purpose))
1168 /* Clear the binding stack. */
1170 java_clear_binding_stack (void)
1172 while (!global_bindings_p ())
1176 #include "gt-java-lang.h"