Fix undefined behavior in the overflow case in ShiftLeft. We don't care about the results in case of overflow, as they are going to be masked out and not actually used, but we need this to avoid being Undefined Behavior.
Fix undefined behavior in the overflow case in ShiftLeft.
We don't care about the results in case of overflow, as they
are going to be masked out and not actually used, but we need
this to avoid being Undefined Behavior.

google/gemmlowp,google/gemmlowp,google/gemmlowp,google/gemmlowp