/* Java(TM) language-specific utility routines.
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Free Software Foundation, Inc.
This file is part of GCC.
static bool java_dump_tree (void *, tree);
static void dump_compound_expr (dump_info_p, tree);
static bool java_decl_ok_for_sibcall (tree);
-static int java_estimate_num_insns (tree);
-static int java_start_inlining (tree);
+static tree java_get_callee_fndecl (tree);
#ifndef TARGET_OBJECT_SUFFIX
# define TARGET_OBJECT_SUFFIX ".o"
/* When zero, don't optimize static class initialization. This flag shouldn't
be tested alone, use STATIC_CLASS_INITIALIZATION_OPTIMIZATION_P instead. */
-int flag_optimize_sci = 1;
+/* FIXME: Make this work with gimplify. */
+int flag_optimize_sci = 0;
/* When nonzero, use offset tables for virtual method calls
in order to improve binary compatibility. */
#undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
#define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE java_signed_or_unsigned_type
-#undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
-#define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES java_tree_inlining_walk_subtrees
-
-#undef LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS
-#define LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS java_estimate_num_insns
-
-#undef LANG_HOOKS_TREE_INLINING_START_INLINING
-#define LANG_HOOKS_TREE_INLINING_START_INLINING java_start_inlining
-
#undef LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN
#define LANG_HOOKS_TREE_DUMP_DUMP_TREE_FN java_dump_tree
+#undef LANG_HOOKS_GIMPLIFY_EXPR
+#define LANG_HOOKS_GIMPLIFY_EXPR java_gimplify_expr
+
+#undef LANG_HOOKS_TREE_INLINING_WALK_SUBTREES
+#define LANG_HOOKS_TREE_INLINING_WALK_SUBTREES java_tree_inlining_walk_subtrees
+
#undef LANG_HOOKS_DECL_OK_FOR_SIBCALL
#define LANG_HOOKS_DECL_OK_FOR_SIBCALL java_decl_ok_for_sibcall
+#undef LANG_HOOKS_GET_CALLEE_FNDECL
+#define LANG_HOOKS_GET_CALLEE_FNDECL java_get_callee_fndecl
+
#undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
#define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION java_expand_body
flag_assert = value;
break;
+ case OPT_fenable_assertions_:
+ add_enable_assert (arg, value);
+ break;
+
+ case OPT_fenable_assertions:
+ add_enable_assert ("", value);
+ break;
+
+ case OPT_fdisable_assertions_:
+ add_enable_assert (arg, !value);
+ break;
+
+ case OPT_fdisable_assertions:
+ add_enable_assert ("", !value);
+ break;
+
case OPT_fassume_compiled_:
add_assume_compiled (arg, !value);
break;
if (flag_inline_functions)
flag_inline_trees = 1;
+ /* FIXME: Indirect dispatch isn't yet compatible with static class
+ init optimization. */
+ if (flag_indirect_dispatch)
+ always_initialize_class_p = true;
+
/* Force minimum function alignment if g++ uses the least significant
bit of function pointers to store the virtual bit. This is required
to keep vtables compatible. */
{
const char *filename = *pfilename;
- /* Use tree inlining if possible. Function instrumentation is only
- done in the RTL level, so we disable tree inlining. */
- if (! flag_instrument_function_entry_exit)
+ /* Use tree inlining. */
+ if (!flag_no_inline)
+ flag_no_inline = 1;
+ if (flag_inline_functions)
{
- if (!flag_no_inline)
- flag_no_inline = 1;
- if (flag_inline_functions)
- {
- flag_inline_trees = 2;
- flag_inline_functions = 0;
- }
+ flag_inline_trees = 2;
+ flag_inline_functions = 0;
}
/* Open input file. */
switch (code)
{
case BLOCK:
- if (BLOCK_EXPR_BODY (t))
- {
- tree *prev = &BLOCK_EXPR_BODY (*tp);
- while (*prev)
- {
- WALK_SUBTREE (*prev);
- prev = &TREE_CHAIN (*prev);
- }
- }
+ WALK_SUBTREE (BLOCK_EXPR_BODY (t));
return NULL_TREE;
- break;
default:
return NULL_TREE;
}
+
+ #undef WALK_SUBTREE
}
/* Called from unsafe_for_reeval. */
if (!*init_test_decl)
*init_test_decl = (tree)n->value;
+ /* This fixes a weird case.
+
+ The front end assumes that once we have called a method that
+ initializes some class, we can assume the class is initialized. It
+ does this by setting the DECL_INITIAL of the init_test_decl for that
+ class, and no initializations are emitted for that class.
+
+ However, what if the method that is suppoed to do the initialization
+ is itself inlined in the caller? When expanding the called method
+ we'll assume that the class initialization has already been done,
+ because the DECL_INITIAL of the init_test_decl is set.
+
+ To fix this we remove the DECL_INITIAL (in the caller scope) of all
+ the init_test_decls corresponding to classes initialized by the
+ inlined method. This makes the caller no longer assume that the
+ method being inlined does any class initializations. */
+ DECL_INITIAL (*init_test_decl) = NULL;
+
return true;
}
(DECL_FUNCTION_INIT_TEST_TABLE (current_function_decl), ite->key);
if (! h)
return true;
-
splay_tree_insert (decl_map,
(splay_tree_key) ite->value,
(splay_tree_value) h);
-
return true;
}
static bool
java_decl_ok_for_sibcall (tree decl)
{
- return decl != NULL && DECL_CONTEXT (decl) == current_class;
+ return decl != NULL && DECL_CONTEXT (decl) == output_class;
}
-/* Used by estimate_num_insns. Estimate number of instructions seen
- by given statement. */
+/* Given a call_expr, try to figure out what its target might be. In
+ the case of an indirection via the atable, search for the decl. If
+ the decl is external, we return NULL. If we don't, the optimizer
+ will replace the indirection with a direct call, which undoes the
+ purpose of the atable indirection. */
static tree
-java_estimate_num_insns_1 (tree *tp, int *walk_subtrees, void *data)
+java_get_callee_fndecl (tree call_expr)
{
- int *count = data;
- tree x = *tp;
+ tree method, table, element, atable_methods;
- if (TYPE_P (x) || DECL_P (x))
- {
- *walk_subtrees = 0;
- return NULL;
- }
- /* Assume that constants and references counts nothing. These should
- be majorized by amount of operations amoung them we count later
- and are common target of CSE and similar optimizations. */
- if (TREE_CODE_CLASS (TREE_CODE (x)) == 'c'
- || TREE_CODE_CLASS (TREE_CODE (x)) == 'r')
+ HOST_WIDE_INT index;
+
+ if (TREE_CODE (call_expr) != CALL_EXPR)
+ return NULL;
+ method = TREE_OPERAND (call_expr, 0);
+ STRIP_NOPS (method);
+ if (TREE_CODE (method) != ARRAY_REF)
+ return NULL;
+ table = TREE_OPERAND (method, 0);
+ if (! DECL_LANG_SPECIFIC(table)
+ || !DECL_OWNER (table)
+ || TYPE_ATABLE_DECL (DECL_OWNER (table)) != table)
return NULL;
- switch (TREE_CODE (x))
- {
- /* Reconginze assignments of large structures and constructors of
- big arrays. */
- case MODIFY_EXPR:
- case CONSTRUCTOR:
- {
- int size = int_size_in_bytes (TREE_TYPE (x));
-
- if (!size || size > MOVE_MAX_PIECES)
- *count += 10;
- else
- *count += 2 * (size + MOVE_MAX - 1) / MOVE_MAX;
- return NULL;
- }
- break;
- /* Few special cases of expensive operations. This is usefull
- to avoid inlining on functions having too many of these. */
- case TRUNC_DIV_EXPR:
- case CEIL_DIV_EXPR:
- case FLOOR_DIV_EXPR:
- case ROUND_DIV_EXPR:
- case TRUNC_MOD_EXPR:
- case CEIL_MOD_EXPR:
- case FLOOR_MOD_EXPR:
- case ROUND_MOD_EXPR:
- case RDIV_EXPR:
- case CALL_EXPR:
-
- case NEW_ARRAY_EXPR:
- case NEW_ANONYMOUS_ARRAY_EXPR:
- case NEW_CLASS_EXPR:
- *count += 10;
- break;
- /* Various containers that will produce no code themselves. */
- case INIT_EXPR:
- case TARGET_EXPR:
- case BIND_EXPR:
- case BLOCK:
- case TREE_LIST:
- case TREE_VEC:
- case IDENTIFIER_NODE:
- case PLACEHOLDER_EXPR:
- case WITH_CLEANUP_EXPR:
- case CLEANUP_POINT_EXPR:
- case NOP_EXPR:
- case VIEW_CONVERT_EXPR:
- case SAVE_EXPR:
- case UNSAVE_EXPR:
- case COMPLEX_EXPR:
- case REALPART_EXPR:
- case IMAGPART_EXPR:
- case TRY_CATCH_EXPR:
- case TRY_FINALLY_EXPR:
- case LABEL_EXPR:
- case EXIT_EXPR:
- case LABELED_BLOCK_EXPR:
- case EXIT_BLOCK_EXPR:
- case EXPR_WITH_FILE_LOCATION:
- case UNARY_PLUS_EXPR:
- case THIS_EXPR:
- case DEFAULT_EXPR:
- case TRY_EXPR:
- break;
- case CLASS_LITERAL:
- *walk_subtrees = 0;
- break;
- default:
- (*count)++;
+ atable_methods = TYPE_ATABLE_METHODS (DECL_OWNER (table));
+ index = TREE_INT_CST_LOW (TREE_OPERAND (method, 1));
+
+ /* FIXME: Replace this for loop with a hash table lookup. */
+ for (element = atable_methods; element; element = TREE_CHAIN (element))
+ {
+ if (index == 1)
+ {
+ tree purpose = TREE_PURPOSE (element);
+ if (TREE_CODE (purpose) == FUNCTION_DECL
+ && ! DECL_EXTERNAL (purpose))
+ return purpose;
+ else
+ return NULL;
+ }
+ --index;
}
- return NULL;
-}
-/* Estimate number of instructions that will be created by expanding the body. */
-static int
-java_estimate_num_insns (tree decl)
-{
- int num = 0;
- walk_tree_without_duplicates (&DECL_SAVED_TREE (decl),
- java_estimate_num_insns_1, &num);
- return num;
-}
-
-/* Start inlining fn. Called by the tree inliner via
- lang_hooks.tree_inlining.cannot_inline_tree_fn. */
-
-static int
-java_start_inlining (tree fn)
-{
- /* A java function's body doesn't have a BLOCK structure suitable
- for debug output until it is expanded. Prevent inlining functions
- that are not yet expanded. */
- return TREE_ASM_WRITTEN (fn) ? 1 : 0;
+ return NULL;
}
#include "gt-java-lang.h"
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