move many gc hashtab to hash_table

gcc/

* asan.c, cfgloop.c, cfgloop.h, cgraph.c, cgraph.h,
	config/darwin.c, config/m32c/m32c.c, config/mep/mep.c,
	config/mips/mips.c, config/rs6000/rs6000.c, dwarf2out.c,
	function.c, function.h, gimple-ssa.h, libfuncs.h, optabs.c,
	output.h, rtl.h, sese.c, symtab.c, tree-cfg.c, tree-dfa.c,
	tree-ssa.c, varasm.c: Use hash-table instead of hashtab.
	* doc/gty.texi (for_user): Document new option.
	* gengtype.c (create_user_defined_type): Don't try to get a struct for
	char.
	(walk_type): Don't error out on for_user option.
	(write_func_for_structure): Emit user marking routines if requested by
	for_user option.
	(write_local_func_for_structure): Likewise.
	(main): Mark types with for_user option as used.
	* ggc.h (gt_pch_nx): Add overload for unsigned int.
	* hash-map.h (hash_map::hash_entry::pch_nx_helper): AddOverloads.
	* hash-table.h (ggc_hasher): New struct.
	(hash_table::create_ggc): New function.
	(gt_pch_nx): New overload for hash_table.

java/

	* class.c, decl.c, except.c, expr.c, java-tree.h, lang.c: Use
	hash_table instead of hashtab.

objc/

	* objc-act.c: use hash_table instead of hashtab.

cp/

	* cp-gimplify.c, cp-tree.h, decl.c, mangle.c, name-lookup.c,
	pt.c, semantics.c, tree.c, typeck2.c: Use hash_table instead of
	hashtab.

fortran/

	* trans-decl.c, trans.c, trans.h: Use hash_table instead of hashtab.

c-family/

	* c-common.c: Use hash_table instead of hashtab.

From-SVN: r216127

1 files changed, 2 insertions, 21 deletions

diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c
index b6b3718..f05db17 100644
--- a/gcc/tree-ssa.c
+++ b/gcc/tree-ssa.c
@@ -1055,24 +1055,6 @@ err:
   internal_error ("verify_ssa failed");
 }
 
-/* Return true if the DECL_UID in both trees are equal.  */
-
-static int
-uid_ssaname_map_eq (const void *va, const void *vb)
-{
-  const_tree a = (const_tree) va;
-  const_tree b = (const_tree) vb;
-  return (a->ssa_name.var->decl_minimal.uid == b->ssa_name.var->decl_minimal.uid);
-}
-
-/* Hash a tree in a uid_decl_map.  */
-
-static unsigned int
-uid_ssaname_map_hash (const void *item)
-{
-  return ((const_tree)item)->ssa_name.var->decl_minimal.uid;
-}
-
 
 /* Initialize global DFA and SSA structures.  */
 
@@ -1080,8 +1062,7 @@ void
 init_tree_ssa (struct function *fn)
 {
   fn->gimple_df = ggc_cleared_alloc<gimple_df> ();
-  fn->gimple_df->default_defs = htab_create_ggc (20, uid_ssaname_map_hash,
-				                 uid_ssaname_map_eq, NULL);
+  fn->gimple_df->default_defs = hash_table<ssa_name_hasher>::create_ggc (20);
   pt_solution_reset (&fn->gimple_df->escaped);
   init_ssanames (fn, 0);
 }
@@ -1153,7 +1134,7 @@ delete_tree_ssa (void)
   if (ssa_operands_active (cfun))
     fini_ssa_operands (cfun);
 
-  htab_delete (cfun->gimple_df->default_defs);
+  cfun->gimple_df->default_defs->empty ();
   cfun->gimple_df->default_defs = NULL;
   pt_solution_reset (&cfun->gimple_df->escaped);
   if (cfun->gimple_df->decls_to_pointers != NULL)