本文整理汇总了C++中sunit::const_pred_iterator::isCtrl方法的典型用法代码示例。如果您正苦于以下问题：C++ const_pred_iterator::isCtrl方法的具体用法？C++ const_pred_iterator::isCtrl怎么用？C++ const_pred_iterator::isCtrl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sunit::const_pred_iterator的用法示例。
在下文中一共展示了const_pred_iterator::isCtrl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: EmitPhysRegCopy
void ScheduleDAG::EmitPhysRegCopy(SUnit *SU,
DenseMap<SUnit*, unsigned> &VRBaseMap) {
for (SUnit::const_pred_iterator I = SU->Preds.begin(), E = SU->Preds.end();
I != E; ++I) {
if (I->isCtrl()) continue; // ignore chain preds
if (I->getSUnit()->CopyDstRC) {
// Copy to physical register.
DenseMap<SUnit*, unsigned>::iterator VRI = VRBaseMap.find(I->getSUnit());
assert(VRI != VRBaseMap.end() && "Node emitted out of order - late");
// Find the destination physical register.
unsigned Reg = 0;
for (SUnit::const_succ_iterator II = SU->Succs.begin(),
EE = SU->Succs.end(); II != EE; ++II) {
if (II->getReg()) {
Reg = II->getReg();
break;
}
}
bool Success = TII->copyRegToReg(*BB, InsertPos, Reg, VRI->second,
SU->CopyDstRC, SU->CopySrcRC,
DebugLoc());
(void)Success;
assert(Success && "copyRegToReg failed!");
} else {
// Copy from physical register.
assert(I->getReg() && "Unknown physical register!");
unsigned VRBase = MRI.createVirtualRegister(SU->CopyDstRC);
bool isNew = VRBaseMap.insert(std::make_pair(SU, VRBase)).second;
isNew = isNew; // Silence compiler warning.
assert(isNew && "Node emitted out of order - early");
bool Success = TII->copyRegToReg(*BB, InsertPos, VRBase, I->getReg(),
SU->CopyDstRC, SU->CopySrcRC,
DebugLoc());
(void)Success;
assert(Success && "copyRegToReg failed!");
}
break;
}
}