[Bug tree-optimization/96701] New: Failure to optimize self right-shift to 0

[gabravier at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96701

            Bug ID: 96701
           Summary: Failure to optimize self right-shift to 0
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gabravier at gmail dot com
  Target Milestone: ---

int f(int x)
{
    return x >> x;
}

This can be optimized to `return 0;`. This transformation is done by LLVM, but
not by GCC.