diff options
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/gcc/tree.c b/gcc/tree.c index bfede0623fe..dbf657b5b31 100644 --- a/gcc/tree.c +++ b/gcc/tree.c @@ -110,6 +110,9 @@ static GTY(()) int next_decl_uid; /* Unique id for next type created. */ static GTY(()) int next_type_uid = 1; +static GTY ((if_marked ("ggc_marked_p"), param_is (union tree_node))) + htab_t uid2type_map; + /* Since we cannot rehash a type after it is in the table, we have to keep the hash code. */ @@ -209,6 +212,41 @@ const char * const omp_clause_code_name[] = /* Init tree.c. */ +/* Add tree NODE into the UID2TYPE_MAP hash table. */ + +static void +insert_type_to_uid_type_map (tree node) +{ + void **slot; + struct tree_type key; + + key.uid = TYPE_UID (node); + slot = htab_find_slot_with_hash (uid2type_map, + &key, TYPE_UID (node), INSERT); + + gcc_assert (!*slot); + + *(tree *)slot = node; +} + +/* Compares tree VA and tree VB. */ + +static int +uid_type_map_eq (const void *va, const void *vb) +{ + const_tree a = (const_tree) va; + const_tree b = (const_tree) vb; + return (a->type.uid == b->type.uid); +} + +/* Hash the tree ITEM. */ + +static unsigned int +uid_type_map_hash (const void *item) +{ + return ((const_tree)item)->type.uid; +} + void init_ttree (void) { @@ -231,6 +269,9 @@ init_ttree (void) int_cst_node = make_node (INTEGER_CST); + uid2type_map = htab_create_ggc (4093, uid_type_map_hash, + uid_type_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; @@ -612,6 +653,7 @@ make_node_stat (enum tree_code code MEM_STAT_DECL) /* We have not yet computed the alias set for this type. */ TYPE_ALIAS_SET (t) = -1; + insert_type_to_uid_type_map (t); break; case tcc_constant: @@ -716,6 +758,7 @@ copy_node_stat (tree node MEM_STAT_DECL) TYPE_CACHED_VALUES_P (t) = 0; TYPE_CACHED_VALUES (t) = NULL_TREE; } + insert_type_to_uid_type_map (t); } return t; @@ -3733,6 +3776,24 @@ build_type_attribute_variant (tree ttype, tree attribute) TYPE_QUALS (ttype)); } +/* Helper function of free_lang_specifics. */ + +static int +reset_type_lang_specific (void **slot, void *unused ATTRIBUTE_UNUSED) +{ + tree decl = *(tree*)slot; + lang_hooks.reset_lang_specifics (decl); + return 1; +} + +/* Free resources that are used by FE but are not needed once they are done. */ + +void +free_lang_specifics (void) +{ + htab_traverse (uid2type_map, reset_type_lang_specific, NULL); +} + /* Return nonzero if IDENT is a valid name for attribute ATTR, or zero if not. |