gcc/ada/
	* gcc-interface/decl.c (value_annotation_hasher::handle_cache_entry):
	Delete.
	(value_annotation_hasher::keep_cache_entry): New function.
	* gcc-interface/utils.c (pad_type_hasher::handle_cache_entry):
	Delete.
	(pad_type_hasher::keep_cache_entry): New function.

gcc/
	* hash-table.h (hash_table): Add gt_cleare_cache as a friend.
	(gt_cleare_cache): Check here for deleted and empty entries.
	Replace handle_cache_entry with a call to keep_cache_entry.
	* hash-traits.h (ggc_cache_hasher::handle_cache_entry): Delete.
	(ggc_cache_hasher::keep_cache_entry): New function.
	* trans-mem.c (tm_wrapper_hasher::handle_cache_entry): Delete.
	(tm_wrapper_hasher::keep_cache_entry): New function.
	* tree.h (tree_decl_map_cache_hasher::handle_cache_entry): Delete.
	(tree_vec_map_cache_hasher::keep_cache_entry): New function.
	* tree.c (type_cache_hasher::handle_cache_entry): Delete.
	(type_cache_hasher::keep_cache_entry): New function.
	(tree_vec_map_cache_hasher::handle_cache_entry): Delete.
	(tree_vec_map_cache_hasher::keep_cache_entry): New function.
	* ubsan.c (tree_type_map_cache_hasher::handle_cache_entry): Delete.
	(tree_type_map_cache_hasher::keep_cache_entry): New function.
	* varasm.c (tm_clone_hasher::handle_cache_entry): Delete.
	(tm_clone_hasher::keep_cache_entry): New function.
	* config/i386/i386.c (dllimport_hasher::handle_cache_entry): Delete.
	(dllimport_hasher::keep_cache_entry): New function.

From-SVN: r224954