/* Language-independent node constructors for parse phase of GNU compiler.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of GCC.
/* Unique id for next type created. */
static GTY(()) int next_type_uid = 1;
-/* Mapping from unique DECL_UID to the decl tree node. */
-static GTY ((if_marked ("ggc_marked_p"), param_is (union tree_node)))
- htab_t decl_for_uid_map;
-
-static void insert_decl_to_uid_decl_map (tree);
-
/* Since we cannot rehash a type after it is in the table, we have to
keep the hash code. */
int_cst_node = make_node (INTEGER_CST);
- decl_for_uid_map = htab_create_ggc (4093, uid_decl_map_hash,
- uid_decl_map_eq, NULL);
-
tree_contains_struct[FUNCTION_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[TRANSLATION_UNIT_DECL][TS_DECL_NON_COMMON] = 1;
tree_contains_struct[TYPE_DECL][TS_DECL_NON_COMMON] = 1;
}
DECL_SOURCE_LOCATION (t) = input_location;
DECL_UID (t) = next_decl_uid++;
- insert_decl_to_uid_decl_map (t);
break;
SET_DECL_RESTRICT_BASE (t, DECL_GET_RESTRICT_BASE (node));
DECL_BASED_ON_RESTRICT_P (t) = 1;
}
- insert_decl_to_uid_decl_map (t);
}
else if (TREE_CODE_CLASS (code) == tcc_type)
{
TREE_SET_CODE (t, code);
TREE_TYPE (t) = type;
-#ifdef USE_MAPPED_LOCATION
SET_EXPR_LOCATION (t, UNKNOWN_LOCATION);
-#else
- SET_EXPR_LOCUS (t, NULL);
-#endif
TREE_OPERAND (t, 0) = node;
TREE_BLOCK (t) = NULL_TREE;
if (node && !TYPE_P (node))
return t;
}
\f
-/* Return true if the DECL_UID in both trees are equal. */
-
-int
-uid_decl_map_eq (const void *va, const void *vb)
-{
- const_tree a = (const_tree) va;
- const_tree b = (const_tree) vb;
- return (a->decl_minimal.uid == b->decl_minimal.uid);
-}
-
-/* Hash a tree in a uid_decl_map. */
-
-unsigned int
-uid_decl_map_hash (const void *item)
-{
- return ((const_tree)item)->decl_minimal.uid;
-}
-
-/* Insert the declaration NODE into the map mapping its unique uid
- back to the tree. */
-
-static void
-insert_decl_to_uid_decl_map (tree node)
-{
- void **slot;
- struct tree_decl_minimal key;
-
- key.uid = DECL_UID (node);
- slot = htab_find_slot_with_hash (decl_for_uid_map,
- &key, DECL_UID (node), INSERT);
-
- /* We should never try to re-insert a decl with the same uid.
- ??? The C++ frontend breaks this invariant. Hopefully in a
- non-fatal way, so just overwrite the slot in this case. */
-#if 0
- gcc_assert (!*slot);
-#endif
-
- *(tree *)slot = node;
-}
-
-/* Lookup the declaration tree from its unique DECL_UID UID. Returns
- the tree node with DECL_UID UID or NULL, if this node was collected. */
-
-tree
-lookup_decl_from_uid (int uid)
-{
- struct tree_decl_minimal key;
-
- key.uid = uid;
- return (tree) htab_find_with_hash (decl_for_uid_map, &key, uid);
-}
-
-/* Print out the statistics for the decl_for_uid_map hash table. */
-
-static void
-print_decl_for_uid_map_statistics (void)
-{
- fprintf (stderr, "DECL_FOR_UID_MAP hash: size %ld, %ld elements, %f collisions\n",
- (long) htab_size (decl_for_uid_map),
- (long) htab_elements (decl_for_uid_map),
- htab_collisions (decl_for_uid_map));
-}
-
/* Create a DECL_... node of code CODE, name NAME and data type TYPE.
We do NOT enter this node in any sort of symbol table.
return block;
}
-#if 1 /* ! defined(USE_MAPPED_LOCATION) */
-/* ??? gengtype doesn't handle conditionals */
-static GTY(()) source_locus last_annotated_node;
-#endif
-
-#ifdef USE_MAPPED_LOCATION
-
expanded_location
expand_location (source_location loc)
{
return xloc;
}
-#else
-
-/* Record the exact location where an expression or an identifier were
- encountered. */
-
-void
-annotate_with_file_line (tree node, const char *file, int line)
-{
- location_t *new_loc;
-
- /* Roughly one percent of the calls to this function are to annotate
- a node with the same information already attached to that node!
- Just return instead of wasting memory. */
- if (EXPR_LOCUS (node)
- && EXPR_LINENO (node) == line
- && (EXPR_FILENAME (node) == file
- || !strcmp (EXPR_FILENAME (node), file)))
- {
- last_annotated_node = EXPR_LOCUS (node);
- return;
- }
-
- /* In heavily macroized code (such as GCC itself) this single
- entry cache can reduce the number of allocations by more
- than half. */
- if (last_annotated_node
- && last_annotated_node->line == line
- && (last_annotated_node->file == file
- || !strcmp (last_annotated_node->file, file)))
- {
- SET_EXPR_LOCUS (node, last_annotated_node);
- return;
- }
-
- new_loc = GGC_NEW (location_t);
- new_loc->file = file;
- new_loc->line = line;
- SET_EXPR_LOCUS (node, new_loc);
- last_annotated_node = new_loc;
-}
-
-void
-annotate_with_locus (tree node, location_t locus)
-{
- annotate_with_file_line (node, locus.file, locus.line);
-}
-#endif
\f
/* Source location accessor functions. */
location_t
expr_location (const_tree node)
{
-#ifdef USE_MAPPED_LOCATION
if (GIMPLE_STMT_P (node))
return GIMPLE_STMT_LOCUS (node);
return EXPR_P (node) ? node->exp.locus : UNKNOWN_LOCATION;
-#else
- if (GIMPLE_STMT_P (node))
- return EXPR_HAS_LOCATION (node)
- ? *GIMPLE_STMT_LOCUS (node) : UNKNOWN_LOCATION;
- return EXPR_HAS_LOCATION (node) ? *node->exp.locus : UNKNOWN_LOCATION;
-#endif
}
void
set_expr_location (tree node, location_t locus)
{
-#ifdef USE_MAPPED_LOCATION
if (GIMPLE_STMT_P (node))
GIMPLE_STMT_LOCUS (node) = locus;
else
EXPR_CHECK (node)->exp.locus = locus;
-#else
- annotate_with_locus (node, locus);
-#endif
}
bool
expr_has_location (const_tree node)
{
-#ifdef USE_MAPPED_LOCATION
return expr_location (node) != UNKNOWN_LOCATION;
-#else
- return expr_locus (node) != NULL;
-#endif
}
-#ifdef USE_MAPPED_LOCATION
source_location *
-#else
-source_locus
-#endif
expr_locus (const_tree node)
{
-#ifdef USE_MAPPED_LOCATION
if (GIMPLE_STMT_P (node))
return CONST_CAST (source_location *, &GIMPLE_STMT_LOCUS (node));
return (EXPR_P (node)
? CONST_CAST (source_location *, &node->exp.locus)
: (source_location *) NULL);
-#else
- if (GIMPLE_STMT_P (node))
- return GIMPLE_STMT_LOCUS (node);
- return EXPR_P (node) ? node->exp.locus : (source_locus) NULL;
-#endif
}
void
-set_expr_locus (tree node,
-#ifdef USE_MAPPED_LOCATION
- source_location *loc
-#else
- source_locus loc
-#endif
- )
+set_expr_locus (tree node, source_location *loc)
{
-#ifdef USE_MAPPED_LOCATION
if (loc == NULL)
{
if (GIMPLE_STMT_P (node))
else
EXPR_CHECK (node)->exp.locus = *loc;
}
-#else
- if (GIMPLE_STMT_P (node))
- GIMPLE_STMT_LOCUS (node) = loc;
- else
- EXPR_CHECK (node)->exp.locus = loc;
-#endif
}
/* Return the file name of the location of NODE. */
expr_filename (const_tree node)
{
if (GIMPLE_STMT_P (node))
- return LOCATION_FILE (location_from_locus (GIMPLE_STMT_LOCUS (node)));
- return LOCATION_FILE (location_from_locus (EXPR_CHECK (node)->exp.locus));
+ return LOCATION_FILE (GIMPLE_STMT_LOCUS (node));
+ return LOCATION_FILE (EXPR_CHECK (node)->exp.locus);
}
/* Return the line number of the location of NODE. */
expr_lineno (const_tree node)
{
if (GIMPLE_STMT_P (node))
- return LOCATION_LINE (location_from_locus (GIMPLE_STMT_LOCUS (node)));
- return LOCATION_LINE (location_from_locus (EXPR_CHECK (node)->exp.locus));
+ return LOCATION_LINE (GIMPLE_STMT_LOCUS (node));
+ return LOCATION_LINE (EXPR_CHECK (node)->exp.locus);
}
\f
return NULL_TREE;
}
+ if (TREE_CODE (node) == TYPE_DECL
+ && TREE_CODE (TREE_TYPE (node)) != RECORD_TYPE
+ && TREE_CODE (TREE_TYPE (node)) != UNION_TYPE)
+ {
+ *no_add_attrs = true;
+ warning (OPT_Wattributes, "%qs attribute ignored",
+ IDENTIFIER_POINTER (name));
+ return NULL_TREE;
+ }
+
/* Report error on dllimport ambiguities seen now before they cause
any damage. */
else if (is_attribute_p ("dllimport", name))
If FOR_TYPE is nonzero, we return a value which, if converted to
type FOR_TYPE, would be equivalent to converting OP to type FOR_TYPE.
- If FOR_TYPE is nonzero, unaligned bit-field references may be changed to the
- narrowest type that can hold the value, even if they don't exactly fit.
- Otherwise, bit-field references are changed to a narrower type
- only if they can be fetched directly from memory in that type.
-
OP must have integer, real or enumeral type. Pointers are not allowed!
There are some cases where the obvious value we could return
}
}
- if (TREE_CODE (op) == COMPONENT_REF
- /* Since type_for_size always gives an integer type. */
- && TREE_CODE (type) != REAL_TYPE
- && TREE_CODE (type) != FIXED_POINT_TYPE
- /* Don't crash if field not laid out yet. */
- && DECL_SIZE (TREE_OPERAND (op, 1)) != 0
- && host_integerp (DECL_SIZE (TREE_OPERAND (op, 1)), 1))
- {
- unsigned int innerprec
- = tree_low_cst (DECL_SIZE (TREE_OPERAND (op, 1)), 1);
- int unsignedp = (DECL_UNSIGNED (TREE_OPERAND (op, 1))
- || TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op, 1))));
- type = lang_hooks.types.type_for_size (innerprec, unsignedp);
-
- /* We can get this structure field in the narrowest type it fits in.
- If FOR_TYPE is 0, do this only for a field that matches the
- narrower type exactly and is aligned for it
- The resulting extension to its nominal type (a fullword type)
- must fit the same conditions as for other extensions. */
-
- if (type != 0
- && INT_CST_LT_UNSIGNED (TYPE_SIZE (type), TYPE_SIZE (TREE_TYPE (op)))
- && (for_type || ! DECL_BIT_FIELD (TREE_OPERAND (op, 1)))
- && (! uns || final_prec <= innerprec || unsignedp))
- {
- win = build3 (COMPONENT_REF, type, TREE_OPERAND (op, 0),
- TREE_OPERAND (op, 1), NULL_TREE);
- TREE_SIDE_EFFECTS (win) = TREE_SIDE_EFFECTS (op);
- TREE_THIS_VOLATILE (win) = TREE_THIS_VOLATILE (op);
- }
- }
-
return win;
}
\f
print_debug_expr_statistics ();
print_value_expr_statistics ();
print_restrict_base_statistics ();
- print_decl_for_uid_map_statistics ();
lang_hooks.print_statistics ();
}
\f
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