* Request a 64-bit register for a 8-byte item.
*/
static final DoubleWordItem requestDoubleWordRegister(
EmitterContext eContext, int jvmType, GPR64 reg) {
if (!eContext.getStream().isCode64()) {
throw new IllegalModeException("Only support in 64-bit mode");
}
final X86RegisterPool pool = eContext.getGPRPool();
final ItemFactory ifac = eContext.getItemFactory();
requestRegister(eContext, reg);
final DoubleWordItem result = ifac.createReg(eContext, jvmType, reg);