本文整理汇总了C++中TargetRegisterClass::getRawAllocationOrder方法的典型用法代码示例。如果您正苦于以下问题：C++ TargetRegisterClass::getRawAllocationOrder方法的具体用法？C++ TargetRegisterClass::getRawAllocationOrder怎么用？C++ TargetRegisterClass::getRawAllocationOrder使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TargetRegisterClass的用法示例。
在下文中一共展示了TargetRegisterClass::getRawAllocationOrder方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: scavengeRegisterBackwards
unsigned RegScavenger::scavengeRegisterBackwards(const TargetRegisterClass &RC,
MachineBasicBlock::iterator To,
bool RestoreAfter, int SPAdj) {
const MachineBasicBlock &MBB = *To->getParent();
const MachineFunction &MF = *MBB.getParent();
// Find the register whose use is furthest away.
MachineBasicBlock::iterator UseMI;
ArrayRef<MCPhysReg> AllocationOrder = RC.getRawAllocationOrder(MF);
std::pair<MCPhysReg, MachineBasicBlock::iterator> P =
findSurvivorBackwards(*MRI, MBBI, To, LiveUnits, AllocationOrder);
MCPhysReg Reg = P.first;
MachineBasicBlock::iterator SpillBefore = P.second;
assert(Reg != 0 && "No register left to scavenge!");
// Found an available register?
if (SpillBefore != MBB.end()) {
MachineBasicBlock::iterator ReloadAfter =
RestoreAfter ? std::next(MBBI) : MBBI;
MachineBasicBlock::iterator ReloadBefore = std::next(ReloadAfter);
DEBUG(dbgs() << "Reload before: " << *ReloadBefore << '\n');
ScavengedInfo &Scavenged = spill(Reg, RC, SPAdj, SpillBefore, ReloadBefore);
Scavenged.Restore = &*std::prev(SpillBefore);
LiveUnits.removeReg(Reg);
DEBUG(dbgs() << "Scavenged register with spill: " << PrintReg(Reg, TRI)
<< " until " << *SpillBefore);
} else {
DEBUG(dbgs() << "Scavenged free register: " << PrintReg(Reg, TRI) << '\n');
}
return Reg;
}