gcc/
	* hash-traits.h (ggc_cache_hasher): Rename to...
	(ggc_cache_remove): ...this and remove typedefs.
	(ggc_cache_ptr_hash): New class.
	* hash-table.h: Update commentary.
	* emit-rtl.c (const_int_hasher): Inherit from ggc_cache_ptr_hash
	rather than ggc_cache_hasher.
	(const_wide_int_hasher, reg_attr_hasher): Likewise.
	(const_double_hasher, const_fixed_hasher): Likewise.
	* function.c (insn_cache_hasher): Likewise.
	* trans-mem.c (tm_wrapper_hasher): Likewise.
	* tree.h (tree_decl_map_cache_hasher): Likewise.
	* tree.c (type_cache_hasher, int_cst_hasher): Likewise.
	(cl_option_hasher, tree_vec_map_cache_hasher): Likewise.
	* ubsan.c (tree_type_map_cache_hasher): Likewise.
	* varasm.c (tm_clone_hasher): Likewise.
	* config/i386/i386.c (dllimport_hasher): Likewise.
	* config/nvptx/nvptx.c (declared_libfunc_hasher): Likewise.
	(tree_hasher): Likewise.

gcc/ada/
	* gcc-interface/decl.c (value_annotation_hasher): Inherit from
	ggc_cache_ptr_hash rather than ggc_cache_hasher.
	* gcc-interface/utils.c (pad_type_hasher): Likewise.

From-SVN: r224960