本文整理汇总了C++中machinefunction::const_iterator::isCleanupFuncletEntry方法的典型用法代码示例。如果您正苦于以下问题：C++ const_iterator::isCleanupFuncletEntry方法的具体用法？C++ const_iterator::isCleanupFuncletEntry怎么用？C++ const_iterator::isCleanupFuncletEntry使用的例子？那么, 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machinefunction::const_iterator的用法示例。
在下文中一共展示了const_iterator::isCleanupFuncletEntry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: while
void WinException::computeIP2StateTable(
const MachineFunction *MF, const WinEHFuncInfo &FuncInfo,
SmallVectorImpl<std::pair<const MCExpr *, int>> &IPToStateTable) {
for (MachineFunction::const_iterator FuncletStart = MF->begin(),
FuncletEnd = MF->begin(),
End = MF->end();
FuncletStart != End; FuncletStart = FuncletEnd) {
// Find the end of the funclet
while (++FuncletEnd != End) {
if (FuncletEnd->isEHFuncletEntry()) {
break;
}
}
// Don't emit ip2state entries for cleanup funclets. Any interesting
// exceptional actions in cleanups must be handled in a separate IR
// function.
if (FuncletStart->isCleanupFuncletEntry())
continue;
MCSymbol *StartLabel;
int BaseState;
if (FuncletStart == MF->begin()) {
BaseState = NullState;
StartLabel = Asm->getFunctionBegin();
} else {
auto *FuncletPad =
cast<FuncletPadInst>(FuncletStart->getBasicBlock()->getFirstNonPHI());
assert(FuncInfo.FuncletBaseStateMap.count(FuncletPad) != 0);
BaseState = FuncInfo.FuncletBaseStateMap.find(FuncletPad)->second;
StartLabel = getMCSymbolForMBB(Asm, &*FuncletStart);
}
assert(StartLabel && "need local function start label");
IPToStateTable.push_back(
std::make_pair(create32bitRef(StartLabel), BaseState));
for (const auto &StateChange : InvokeStateChangeIterator::range(
FuncInfo, FuncletStart, FuncletEnd, BaseState)) {
// Compute the label to report as the start of this entry; use the EH
// start label for the invoke if we have one, otherwise (this is a call
// which may unwind to our caller and does not have an EH start label, so)
// use the previous end label.
const MCSymbol *ChangeLabel = StateChange.NewStartLabel;
if (!ChangeLabel)
ChangeLabel = StateChange.PreviousEndLabel;
// Emit an entry indicating that PCs after 'Label' have this EH state.
IPToStateTable.push_back(
std::make_pair(getLabelPlusOne(ChangeLabel), StateChange.NewState));
// FIXME: assert that NewState is between CatchLow and CatchHigh.
}
}
}