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, 8 insertions, 30 deletions

diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c
index 6c6faf3..9da8da2 100644
--- a/gcc/tree-eh.c
+++ b/gcc/tree-eh.c
@@ -77,23 +77,12 @@ typedef union {tree *tp; tree t; gimple g;} treemple;
 static void
 add_stmt_to_eh_lp_fn (struct function *ifun, gimple t, int num)
 {
-  struct throw_stmt_node *n;
-  void **slot;
-
   gcc_assert (num != 0);
 
-  n = ggc_alloc<throw_stmt_node> ();
-  n->stmt = t;
-  n->lp_nr = num;
-
   if (!get_eh_throw_stmt_table (ifun))
-    set_eh_throw_stmt_table (ifun, htab_create_ggc (31, struct_ptr_hash,
-						    struct_ptr_eq,
-						    ggc_free));
+    set_eh_throw_stmt_table (ifun, hash_map<gimple, int>::create_ggc (31));
 
-  slot = htab_find_slot (get_eh_throw_stmt_table (ifun), n, INSERT);
-  gcc_assert (!*slot);
-  *slot = n;
+  gcc_assert (!get_eh_throw_stmt_table (ifun)->put (t, num));
 }
 
 /* Add statement T in the current function (cfun) to EH landing pad NUM.  */
@@ -130,22 +119,14 @@ record_stmt_eh_region (eh_region region, gimple t)
 bool
 remove_stmt_from_eh_lp_fn (struct function *ifun, gimple t)
 {
-  struct throw_stmt_node dummy;
-  void **slot;
-
   if (!get_eh_throw_stmt_table (ifun))
     return false;
 
-  dummy.stmt = t;
-  slot = htab_find_slot (get_eh_throw_stmt_table (ifun), &dummy,
-                        NO_INSERT);
-  if (slot)
-    {
-      htab_clear_slot (get_eh_throw_stmt_table (ifun), slot);
-      return true;
-    }
-  else
+  if (!get_eh_throw_stmt_table (ifun)->get (t))
     return false;
+
+  get_eh_throw_stmt_table (ifun)->remove (t);
+      return true;
 }
 
 
@@ -166,14 +147,11 @@ remove_stmt_from_eh_lp (gimple t)
 int
 lookup_stmt_eh_lp_fn (struct function *ifun, gimple t)
 {
-  struct throw_stmt_node *p, n;
-
   if (ifun->eh->throw_stmt_table == NULL)
     return 0;
 
-  n.stmt = t;
-  p = (struct throw_stmt_node *) htab_find (ifun->eh->throw_stmt_table, &n);
-  return p ? p->lp_nr : 0;
+  int *lp_nr = ifun->eh->throw_stmt_table->get (t);
+  return lp_nr ? *lp_nr : 0;
 }
 
 /* Likewise, but always use the current function.  */