* doc/invoke.texi (ftree-vectorizer-verbose): New.
* opts.c (OPT_ftree_vectorizer_verbose_): New case for switch.
* common.opt (ftree-vectorizer-verbose): New Flag for the vectorizer
was added.
* tree.h (vect_set_verbosity_level): New extern function declaration
added.
* tree-vectorizer.h (verbosity_levels): New enum type.
* tree-vectorizer.c (vect_debug_stats): Function removed.
(vect_debug_details): Likewise.
(vect_verbosity_level): Global variable was defined and initialized.
(vect_dump): Global variable definition.
(vect_print_dump_info): New function.
(vect_set_dump_settings): New function.
(vect_set_verbosity_level): New function.
(vectorize_loops): Add call to vect_set_dump_settings.
(slpeel_make_loop_iterate_ntimes): Dump condition was changed.
(slpeel_tree_duplicate_loop_to_edge_cfg): Likewise.
(slpeel_tree_peel_loop_to_edge): Likewise.