本文整理汇总了C++中machinebasicblock::instr_iterator::isKill方法的典型用法代码示例。如果您正苦于以下问题：C++ instr_iterator::isKill方法的具体用法？C++ instr_iterator::isKill怎么用？C++ instr_iterator::isKill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::instr_iterator的用法示例。
在下文中一共展示了instr_iterator::isKill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: delayHasHazard
bool Filler::delayHasHazard(MachineBasicBlock::instr_iterator MI, bool &SawLoad,
bool &SawStore, SmallSet<unsigned, 32> &RegDefs,
SmallSet<unsigned, 32> &RegUses) {
if (MI->isImplicitDef() || MI->isKill())
return true;
// Loads or stores cannot be moved past a store to the delay slot
// and stores cannot be moved past a load.
if (MI->mayLoad()) {
if (SawStore)
return true;
SawLoad = true;
}
if (MI->mayStore()) {
if (SawStore)
return true;
SawStore = true;
if (SawLoad)
return true;
}
assert((!MI->isCall() && !MI->isReturn()) &&
"Cannot put calls or returns in delay slot.");
for (unsigned I = 0, E = MI->getNumOperands(); I != E; ++I) {
const MachineOperand &MO = MI->getOperand(I);
unsigned Reg;
if (!MO.isReg() || !(Reg = MO.getReg()))
continue; // skip
if (MO.isDef()) {
// check whether Reg is defined or used before delay slot.
if (isRegInSet(RegDefs, Reg) || isRegInSet(RegUses, Reg))
return true;
}
if (MO.isUse()) {
// check whether Reg is defined before delay slot.
if (isRegInSet(RegDefs, Reg))
return true;
}
}
return false;
}