gcc/
* Makefile.in (LIBFUNCS_H): Add $(HASHTAB_H).
(target-globals.o): Depend on $(LIBFUNCS_H).
* libfuncs.h: Include hashtab.h.
(libfunc_entry): Moved from optabs.c.
(target_libfuncs): New structure.
(default_target_libfuncs): Declare.
(this_target_libfuncs): Declare as a variable or define as a macro.
(libfunc_table): Redefine as a macro.
* optabs.c (default_target_libfuncs): New variable.
(this_target_libfuncs): New conditional variable.
(libfunc_table): Delete.
(libfunc_entry): Moved to optabs.h.
(libfunc_hash): Redefine as a macro.
(hash_libfunc, eq_libfunc): Fix comments.
(init_optabs): Use libfunc_hash to detect cases where the function
has already been called. Clear the hash table instead of
recreating it.
* target-globals.h (this_target_libfuncs): Declare.
(target_globals): Add a libfuncs field.
(restore_target_globals): Copy the libfuncs field to
this_target_libfuncs.
* target-globals.c: Include libfuncs.h.
(default_target_globals): Initialize the libfuncs field.
(save_target_globals): Likewise.