[Bug middle-end/118758] [15 regression] ok code with -O2, but wrong code with -O3

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118758

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

           What    |Removed                     |Added
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   Target Milestone|---                         |15.0
          Component|c                           |middle-end
           Keywords|                            |wrong-code