support ggc hash_map and hash_set

gcc/ChangeLog:

	* alloc-pool.c: Include coretypes.h.
	* cgraph.h, dbxout.c, dwarf2out.c, except.c, except.h, function.c,
	function.h, symtab.c, tree-cfg.c, tree-eh.c: Use hash_map and
	hash_set instead of htab.
	* ggc-page.c (in_gc): New variable.
	(ggc_free): Do nothing if a collection is taking place.
	(ggc_collect): Set in_gc appropriately.
	* ggc.h (gt_ggc_mx(const char *)): New function.
	(gt_pch_nx(const char *)): Likewise.
	(gt_ggc_mx(int)): Likewise.
	(gt_pch_nx(int)): Likewise.
	* hash-map.h (hash_map::hash_entry::ggc_mx): Likewise.
	(hash_map::hash_entry::pch_nx): Likewise.
	(hash_map::hash_entry::pch_nx_helper): Likewise.
(hash_map::hash_map): Adjust.
(hash_map::create_ggc): New function.
(gt_ggc_mx): Likewise.
(gt_pch_nx): Likewise.
	* hash-set.h (default_hashset_traits::ggc_mx): Likewise.
(default_hashset_traits::pch_nx): Likewise.
(hash_set::hash_entry::ggc_mx): Likewise.
(hash_set::hash_entry::pch_nx): Likewise.
(hash_set::hash_entry::pch_nx_helper): Likewise.
(hash_set::hash_set): Adjust.
(hash_set::create_ggc): New function.
(hash_set::elements): Likewise.
(gt_ggc_mx): Likewise.
(gt_pch_nx): Likewise.
	* hash-table.h (hash_table::hash_table): Adjust.
(hash_table::m_ggc): New member.
	(hash_table::~hash_table): Adjust.
	(hash_table::expand): Likewise.
	(hash_table::empty): Likewise.
(gt_ggc_mx): New function.
	(hashtab_entry_note_pointers): Likewise.
(gt_pch_nx): Likewise.

From-SVN: r214834

1 files changed, 9 insertions, 53 deletions

diff --git a/gcc/symtab.c b/gcc/symtab.c
index 739a8e4a308..792b3b50ea6 100644
--- a/gcc/symtab.c
+++ b/gcc/symtab.c
@@ -407,15 +407,7 @@ symtab_node::unregister (void)
   if (!is_a <varpool_node *> (this) || !DECL_HARD_REGISTER (decl))
     symtab->unlink_from_assembler_name_hash (this, false);
   if (in_init_priority_hash)
-    {
-      symbol_priority_map in;
-      void **slot;
-      in.symbol = this;
-
-      slot = htab_find_slot (symtab->init_priority_hash, &in, NO_INSERT);
-      if (slot)
-	htab_clear_slot (symtab->init_priority_hash, slot);
-    }
+    symtab->init_priority_hash->remove (this);
 }
 
 
@@ -1455,14 +1447,10 @@ symtab_node::set_section (const char *section)
 priority_type
 symtab_node::get_init_priority ()
 {
-  symbol_priority_map *h;
-  symbol_priority_map in;
-
   if (!this->in_init_priority_hash)
     return DEFAULT_INIT_PRIORITY;
-  in.symbol = this;
-  h = (symbol_priority_map *) htab_find (symtab->init_priority_hash,
-						&in);
+
+  symbol_priority_map *h = symtab->init_priority_hash->get (this);
   return h ? h->init : DEFAULT_INIT_PRIORITY;
 }
 
@@ -1481,35 +1469,12 @@ enum availability symtab_node::get_availability (void)
 priority_type
 cgraph_node::get_fini_priority ()
 {
-  symbol_priority_map *h;
-  symbol_priority_map in;
-
   if (!this->in_init_priority_hash)
     return DEFAULT_INIT_PRIORITY;
-  in.symbol = this;
-  h = (symbol_priority_map *) htab_find (symtab->init_priority_hash,
-						&in);
+  symbol_priority_map *h = symtab->init_priority_hash->get (this);
   return h ? h->fini : DEFAULT_INIT_PRIORITY;
 }
 
-/* Return true if the from tree in both priority maps are equal.  */
-
-int
-symbol_priority_map_eq (const void *va, const void *vb)
-{
-  const symbol_priority_map *const a = (const symbol_priority_map *) va,
-    *const b = (const symbol_priority_map *) vb;
-  return (a->symbol == b->symbol);
-}
-
-/* Hash a from symbol in a symbol_priority_map.  */
-
-unsigned int
-symbol_priority_map_hash (const void *item)
-{
-  return htab_hash_pointer (((const symbol_priority_map *)item)->symbol);
-}
-
 /* Return the initialization and finalization priority information for
    DECL.  If there is no previous priority information, a freshly
    allocated structure is returned.  */
@@ -1517,23 +1482,14 @@ symbol_priority_map_hash (const void *item)
 symbol_priority_map *
 symtab_node::priority_info (void)
 {
-  symbol_priority_map in;
-  symbol_priority_map *h;
-  void **loc;
-
-  in.symbol = this;
   if (!symtab->init_priority_hash)
-    symtab->init_priority_hash = htab_create_ggc (512,
-						  symbol_priority_map_hash,
-						  symbol_priority_map_eq, 0);
+    symtab->init_priority_hash = hash_map<symtab_node *, symbol_priority_map>::create_ggc (13);
 
-  loc = htab_find_slot (symtab->init_priority_hash, &in, INSERT);
-  h = (symbol_priority_map *) *loc;
-  if (!h)
+  bool existed;
+  symbol_priority_map *h
+    = &symtab->init_priority_hash->get_or_insert (this, &existed);
+  if (!existed)
     {
-      h = ggc_cleared_alloc<symbol_priority_map> ();
-      *loc = h;
-      h->symbol = this;
       h->init = DEFAULT_INIT_PRIORITY;
       h->fini = DEFAULT_INIT_PRIORITY;
       in_init_priority_hash = true;