// OptimizePICCall methods.
bool OptimizePICCall::runOnMachineFunction(MachineFunction &F) {
if (static_cast<const MipsSubtarget &>(F.getSubtarget()).inMips16Mode())
return false;
// Do a pre-order traversal of the dominator tree.
MachineDominatorTree *MDT = &getAnalysis<MachineDominatorTree>();
bool Changed = false;
SmallVector<MBBInfo, 8> WorkList(1, MBBInfo(MDT->getRootNode()));
while (!WorkList.empty()) {
MBBInfo &MBBI = WorkList.back();
// If this MBB has already been visited, destroy the scope for the MBB and
// pop it from the work list.
if (MBBI.isVisited()) {
MBBI.postVisit();
WorkList.pop_back();
continue;
}
// Visit the MBB and add its children to the work list.
MBBI.preVisit(ScopedHT);
Changed |= visitNode(MBBI);
const MachineDomTreeNode *Node = MBBI.getNode();
const std::vector<MachineDomTreeNode *> &Children = Node->getChildren();
WorkList.append(Children.begin(), Children.end());
}
return Changed;
}
bool SystemZLDCleanup::runOnMachineFunction(MachineFunction &F) {
if (skipFunction(*F.getFunction()))
return false;
TII = static_cast<const SystemZInstrInfo *>(F.getSubtarget().getInstrInfo());
MF = &F;
SystemZMachineFunctionInfo* MFI = F.getInfo<SystemZMachineFunctionInfo>();
if (MFI->getNumLocalDynamicTLSAccesses() < 2) {
// No point folding accesses if there isn't at least two.
return false;
}
MachineDominatorTree *DT = &getAnalysis<MachineDominatorTree>();
return VisitNode(DT->getRootNode(), 0);
}
