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Fold the useful features of alist and alist_node into ilist, and

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a new ilist_node class, and remove them. Unlike alist_node,
ilist_node doesn't attempt to manage storage itself, so it avoids
the associated problems, including being opaque in gdb.

Adjust the Recycler class so that it doesn't depend on alist_node.
Also, change it to use explicit Size and Align parameters, allowing
it to work when the largest-sized node doesn't have the greatest
alignment requirement.

Change MachineInstr's MachineMemOperand list from a pool-backed
alist to a std::list for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54146 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-07-28 21:51:04 +00:00
parent 80e051dfde
commit fed90b6d09
33 changed files with 340 additions and 815 deletions
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36
lib/CodeGen/MachineBasicBlock.cpp
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@ -24,7 +24,7 @@ using namespace llvm;
MachineBasicBlock::MachineBasicBlock(MachineFunction &mf, const BasicBlock *bb)
: BB(bb), Number(-1), xParent(&mf), Alignment(0), IsLandingPad(false) {
Insts.getTraits().Parent = this;
Insts.Parent = this;
}
MachineBasicBlock::~MachineBasicBlock() {
@ -43,7 +43,7 @@ std::ostream& llvm::operator<<(std::ostream &OS, const MachineBasicBlock &MBB) {
/// MBBs start out as #-1. When a MBB is added to a MachineFunction, it
/// gets the next available unique MBB number. If it is removed from a
/// MachineFunction, it goes back to being #-1.
void alist_traits<MachineBasicBlock>::addNodeToList(MachineBasicBlock* N) {
void ilist_traits<MachineBasicBlock>::addNodeToList(MachineBasicBlock* N) {
MachineFunction &MF = *N->getParent();
N->Number = MF.addToMBBNumbering(N);
@ -55,7 +55,7 @@ void alist_traits<MachineBasicBlock>::addNodeToList(MachineBasicBlock* N) {
LeakDetector::removeGarbageObject(N);
}
void alist_traits<MachineBasicBlock>::removeNodeFromList(MachineBasicBlock* N) {
void ilist_traits<MachineBasicBlock>::removeNodeFromList(MachineBasicBlock* N) {
N->getParent()->removeFromMBBNumbering(N->Number);
N->Number = -1;
LeakDetector::addGarbageObject(N);
@ -65,7 +65,7 @@ void alist_traits<MachineBasicBlock>::removeNodeFromList(MachineBasicBlock* N) {
/// addNodeToList (MI) - When we add an instruction to a basic block
/// list, we update its parent pointer and add its operands from reg use/def
/// lists if appropriate.
void alist_traits<MachineInstr>::addNodeToList(MachineInstr* N) {
void ilist_traits<MachineInstr>::addNodeToList(MachineInstr* N) {
assert(N->getParent() == 0 && "machine instruction already in a basic block");
N->setParent(Parent);
@ -80,7 +80,7 @@ void alist_traits<MachineInstr>::addNodeToList(MachineInstr* N) {
/// removeNodeFromList (MI) - When we remove an instruction from a basic block
/// list, we update its parent pointer and remove its operands from reg use/def
/// lists if appropriate.
void alist_traits<MachineInstr>::removeNodeFromList(MachineInstr* N) {
void ilist_traits<MachineInstr>::removeNodeFromList(MachineInstr* N) {
assert(N->getParent() != 0 && "machine instruction not in a basic block");
// Remove from the use/def lists.
@ -94,35 +94,23 @@ void alist_traits<MachineInstr>::removeNodeFromList(MachineInstr* N) {
/// 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 alist_traits<MachineInstr>::transferNodesFromList(
alist_traits<MachineInstr>& fromList,
void ilist_traits<MachineInstr>::transferNodesFromList(
ilist_traits<MachineInstr>& fromList,
MachineBasicBlock::iterator first,
MachineBasicBlock::iterator 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.
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();
for (; first != last; ++first)
first->setParent(Parent);
if (NewMF) first->AddRegOperandsToUseLists(NewMF->getRegInfo());
}
}
void alist_traits<MachineInstr>::deleteNode(MachineInstr* MI) {
void ilist_traits<MachineInstr>::deleteNode(MachineInstr* MI) {
assert(!MI->getParent() && "MI is still in a block!");
Parent->getParent()->DeleteMachineInstr(MI);
}