How can I perform a bitwise shift operation (<< or >>) directly on an IntVector using the Java Vector API?
I haven't been able to find anything obvious in the API to do this; the closest I've found is myIntVec.lanewise(VectorOperators.ASHR, shiftAmt) but this performs an additional AND operation on the shift amount.
The behavior is correct: pure << for ints also performs an & operation on the shift amount. The & correctly does the appropriate & operation for the values being operated on.
ASHR is correctly equivalent to >>. LSHR is equivalent to >>>. LSHL is equivalent to <<. These all do the same thing as the normal operators do.
See JLS 15.19 for details.