[Bug tree-optimization/95404] New: and

[gabravier at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95404

            Bug ID: 95404
           Summary: and
           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: ---

bool f2(int x)
{
    if ((unsigned)x > 15)
        return false;

    return (x & 1) == 0;
}

This can be optimized to `return !(x & -15);`. This transformation is done by
LLVM, but not by GCC.