Hi,

I think I tackled all of your comments, let me know if I missed something.


gcc/ChangeLog:

2023-05-12  Andre Vieira  <andre.simoesdiasvieira@arm.com>
             Joel Hutton  <joel.hutton@arm.com>

         * tree-vect-patterns.cc (vect_gimple_build): New Function.
         (vect_recog_widen_op_pattern): Refactor to use code_helper.
         * tree-vect-stmts.cc (vect_gen_widened_results_half): Likewise.
         (vect_create_vectorized_demotion_stmts): Likewise.
         (vect_create_vectorized_promotion_stmts): Likewise.
         (vect_create_half_widening_stmts): Likewise.
         (vectorizable_conversion): Likewise.
         (vectorizable_call): Likewise.
         (supportable_widening_operation): Likewise.
         (supportable_narrowing_operation): Likewise.
         (simple_integer_narrowing): Likewise.
         * tree-vectorizer.h (supportable_widening_operation): Likewise.
         (supportable_narrowing_operation): Likewise.
         (vect_gimple_build): New function prototype.
         * tree.h (code_helper::safe_as_tree_code): New function.
         (code_helper::safe_as_fn_code): New function.