Makefile.in (tree.o): Depend on HASHTAB_H.
* Makefile.in (tree.o): Depend on HASHTAB_H.
* tree.c: Include hashtab.h.
(struct type_hash): Remove next field.
(TYPE_HASH_SIZE): Remove.
(TYPE_HASH_INITIAL_SIZE): New define.
(type_hash_table): Change type to htab_t.
(type_hash_eq, type_hash_hash, print_type_hash_statistics,
mark_hash_entry): New functions.
(init_obstacks): Allocate type hash.
(type_hash_lookup): Use htab functions.
(type_hash_add, mark_type_hash): Likewise.
(dump_tree_statistics): Call print_type_hash_statistics.
From-SVN: r32642