[Bug tree-optimization/114027] [14 Regression] RISC-V vector: miscompile at -O3

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114027

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |needs-bisection
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Target Milestone|---                         |14.0
            Summary|[14] RISC-V vector:         |[14 Regression] RISC-V
                   |miscompile at -O3           |vector: miscompile at -O3
          Component|target                      |tree-optimization

--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Ok, now I am able to reproduce the failure:
`-O3 -fno-vect-cost-model -msse4.2` is the exact command line needed.
For some reason enabling AVX512 causes the loop not to be vectorize ...