* tree-vectorizer.h (LOC): New type.
(UNKNOWN_LOC, EXPR_LOC, LOC_FILE, LOC_LINE): New macros.
(loop_line_number): New field in struct _loop_vec_info.
(LOOP_VINFO_LOC, LOOP_LOC): New macros.
* tree-vectorizer.c (input.h): Included.
(find_loop_location): New function.
(vect_debug_stats): Argument changed from loop to LOC. Computation of
loop line number removed.
(vect_debug_details): Likewise.
(new_loop_vec_info): Initialize new field LOOP_VINFO_LOC.
(slpeel_make_loop_iterate_ntimes): Call find_loop_location. Argument in
call to vect_debug_details/stats changed from loop to loop_loc.
(slpeel_tree_duplicate_loop_to_edge_cfg): Likewise.
(slpeel_tree_peel_loop_to_edge): Likewise.