[Bug target/127633] [16 regression] wrong code at -O{2,3} with "-funroll-all-loops -fno-vect-cost-model" on x86_64-linux-gnu since r17-2654

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127633

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[17 regression] wrong code  |[16 regression] wrong code
                   |at -O{2,3} with             |at -O{2,3} with
                   |"-funroll-all-loops         |"-funroll-all-loops
                   |-fno-vect-cost-model" on    |-fno-vect-cost-model" on
                   |x86_64-linux-gnu since      |x86_64-linux-gnu since
                   |r17-2654                    |r17-2654
           Priority|P3                          |P2
      Known to work|                            |17.0
   Target Milestone|17.0                        |16.3

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk, but the issue is latent.  I'm considering backporting to 16 at
least.