int idx = sig.getIMTOffset() >> LOG_BYTES_IN_ADDRESS;
int idx = sig.getIMTOffset().toInt() >> LOG_BYTES_IN_ADDRESS;
    private int getIndex(VM_InterfaceMethodSignature sig) {      int idx = sig.getIMTOffset() >> LOG_BYTES_IN_ADDRESS;      if (VM.BuildForEmbeddedIMT) {        idx -= TIB_FIRST_INTERFACE_METHOD_INDEX;      }      return idx;    }