/** @see org.jnode.vm.x86.compiler.l1a.Item#clone() */
protected Item clone(EmitterContext ec) {
final WordItem res;
final X86Assembler os = ec.getStream();
switch (getKind()) {
case Kind.GPR:
res = L1AHelper.requestWordRegister(ec, getType(), false);
final GPR r = res.getRegister();
os.writeMOV(gpr.getSize(), r, gpr);
break;
case Kind.LOCAL:
res = (WordItem) factory.createLocal(getType(), getOffsetToFP(ec));
break;
case Kind.CONSTANT:
res = cloneConstant(ec);
break;
case Kind.FPUSTACK:
// TODO
notImplemented();
res = null;
break;
case Kind.STACK:
os.writePUSH(X86Register.ESP, 0);
res = (WordItem) factory.createStack(getType());
if (VirtualStack.checkOperandStack) {
final ItemStack operandStack = ec.getVStack().operandStack;
operandStack.pop(this);
operandStack.push(this);
operandStack.push(res);
}
break;
default:
throw new IllegalArgumentException("Invalid item kind");
}
return res;
}
