* Makefile.in (ggc-simple.o): Depend on hash.h.
	* ggc.h (ggc_add_tree_hash_table_root): Declare.
	(ggc_mark_tree_varray): Likewise.
	(ggc_mark_tree_hash_table): Likewise.
	* ggc-simple.c: Include hash.h.
	(ggc_mark_tree_hash_table_ptr): New function.
	(ggc_mark_tree_hash_table_entry): Likewise.
	(ggc_mark_tree_hash_table): Likewise.
	(ggc_add_tree_hash_table_root): Likewise.
	* varray.h (const_equiv_data): Use struct rtx_def *, rather than

	* profile.c (output_func_start_profiler): Remove apparently
	nonsensical call to start_sequence.

From-SVN: r29134