/// transferNodesFromList (MI) - When moving a range of instructions from one
/// MBB list to another, we need to update the parent pointers and the use/def
/// lists.
void ilist_traits<MachineInstr>::transferNodesFromList(
iplist<MachineInstr, ilist_traits<MachineInstr> >& fromList,
ilist_iterator<MachineInstr> first,
ilist_iterator<MachineInstr> last) {
// Splice within the same MBB -> no change.
if (parent == fromList.parent) return;
// If splicing between two blocks within the same function, just update the
// parent pointers.
if (parent->getParent() == fromList.parent->getParent()) {
for (; first != last; ++first)
first->setParent(parent);
return;
}
// Otherwise, we have to update the parent and the use/def lists. The common
// case when this occurs is if we're splicing from a block in a MF to a block
// that is not in an MF.
bool HasOldMF = fromList.parent->getParent() != 0;
MachineFunction *NewMF = parent->getParent();
for (; first != last; ++first) {
if (HasOldMF) first->RemoveRegOperandsFromUseLists();
first->setParent(parent);
if (NewMF) first->AddRegOperandsToUseLists(NewMF->getRegInfo());
}
}
/// transferNodesFromList (MI) - When moving a range of instructions from one
/// MBB list to another, we need to update the parent pointers and the use/def
/// lists.
void ilist_traits<MachineInstr>::
transferNodesFromList(ilist_traits<MachineInstr> &fromList,
ilist_iterator<MachineInstr> first,
ilist_iterator<MachineInstr> last) {
assert(Parent->getParent() == fromList.Parent->getParent() &&
"MachineInstr parent mismatch!");
// Splice within the same MBB -> no change.
if (Parent == fromList.Parent) return;
// If splicing between two blocks within the same function, just update the
// parent pointers.
for (; first != last; ++first)
first->setParent(Parent);
}
