本文整理汇总了C++中machinebasicblock::iterator::isPosition方法的典型用法代码示例。如果您正苦于以下问题：C++ iterator::isPosition方法的具体用法？C++ iterator::isPosition怎么用？C++ iterator::isPosition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machinebasicblock::iterator的用法示例。
在下文中一共展示了iterator::isPosition方法的2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: insertCallDefsUses
MachineBasicBlock::iterator
Filler::findDelayInstr(MachineBasicBlock &MBB,
MachineBasicBlock::iterator slot)
{
SmallSet<unsigned, 32> RegDefs;
SmallSet<unsigned, 32> RegUses;
bool sawLoad = false;
bool sawStore = false;
if (slot == MBB.begin())
return MBB.end();
if (slot->getOpcode() == SP::RET || slot->getOpcode() == SP::TLS_CALL)
return MBB.end();
if (slot->getOpcode() == SP::RETL) {
MachineBasicBlock::iterator J = slot;
--J;
if (J->getOpcode() == SP::RESTORErr
|| J->getOpcode() == SP::RESTOREri) {
// change retl to ret.
slot->setDesc(TM.getInstrInfo()->get(SP::RET));
return J;
}
}
// Call's delay filler can def some of call's uses.
if (slot->isCall())
insertCallDefsUses(slot, RegDefs, RegUses);
else
insertDefsUses(slot, RegDefs, RegUses);
bool done = false;
MachineBasicBlock::iterator I = slot;
while (!done) {
done = (I == MBB.begin());
if (!done)
--I;
// skip debug value
if (I->isDebugValue())
continue;
if (I->hasUnmodeledSideEffects() || I->isInlineAsm() || I->isPosition() ||
I->hasDelaySlot() || I->isBundledWithSucc())
break;
if (delayHasHazard(I, sawLoad, sawStore, RegDefs, RegUses)) {
insertDefsUses(I, RegDefs, RegUses);
continue;
}
return I;
}
return MBB.end();
}示例2: end
MachineBasicBlock::iterator
MachineBasicBlock::SkipPHIsAndLabels(MachineBasicBlock::iterator I) {
iterator E = end();
while (I != E && (I->isPHI() || I->isPosition() || I->isDebugValue()))
++I;
// FIXME: This needs to change if we wish to bundle labels / dbg_values
// inside the bundle.
assert((I == E || !I->isInsideBundle()) &&
"First non-phi / non-label instruction is inside a bundle!");
return I;
}