[Bug target/83008] [performance] Is it better to avoid extra instructions in data passing between loops?

[sergey.shalnov at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83008

--- Comment #24 from sergey.shalnov at intel dot com ---
Richard,
The latest "SLP costing for constants/externs improvement" patch generates the
same code as baseline for the test example.

Are you sure that "num_vects_to_check" should 1 if vector is not constant? I
would expect "num_vects_to_check = ncopies_for_cost;" here:

1863              else
1864                {
1865                  num_vects_to_check = 1;
1866                  nelt_limit = group_size;
1867                }

Sergey