[Bug tree-optimization/128519] [17 Regression] wrong code at -O1: SCEV widens a decreasing unsigned short IV as no_overflow; loop exits one iteration early since r17-5477

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128519

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |17.0
           Priority|P3                          |P1
            Summary|wrong code at -O1: SCEV     |[17 Regression] wrong code
                   |widens a decreasing         |at -O1: SCEV widens a
                   |unsigned short IV as        |decreasing unsigned short
                   |no_overflow; loop exits one |IV as no_overflow; loop
                   |iteration early since       |exits one iteration early
                   |r17-5477                    |since r17-5477