本文整理汇总了C++中machinebasicblock::reverse_iterator::getOpcode方法的典型用法代码示例。如果您正苦于以下问题：C++ reverse_iterator::getOpcode方法的具体用法？C++ reverse_iterator::getOpcode怎么用？C++ reverse_iterator::getOpcode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machinebasicblock::reverse_iterator的用法示例。
在下文中一共展示了reverse_iterator::getOpcode方法的4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: calculateLiveness
/// Performs the actual liveness calculation for the function.
bool StackMapLiveness::calculateLiveness() {
bool HasChanged = false;
// For all basic blocks in the function.
for (MachineFunction::iterator MBBI = MF->begin(), MBBE = MF->end();
MBBI != MBBE; ++MBBI) {
DEBUG(dbgs() << "****** BB " << MBBI->getName() << " ******\n");
LiveRegs.init(TRI);
LiveRegs.addLiveOuts(MBBI);
bool HasStackMap = false;
// Reverse iterate over all instructions and add the current live register
// set to an instruction if we encounter a stackmap or patchpoint
// instruction.
for (MachineBasicBlock::reverse_iterator I = MBBI->rbegin(),
E = MBBI->rend(); I != E; ++I) {
int Opc = I->getOpcode();
if ((EnableStackMapLiveness && (Opc == TargetOpcode::STACKMAP)) ||
(EnablePatchPointLiveness && (Opc == TargetOpcode::PATCHPOINT))) {
addLiveOutSetToMI(*I);
HasChanged = true;
HasStackMap = true;
++NumStackMaps;
}
DEBUG(dbgs() << " " << LiveRegs << " " << *I);
LiveRegs.stepBackward(*I);
}
++NumBBsVisited;
if (!HasStackMap)
++NumBBsHaveNoStackmap;
}
return HasChanged;
}示例2: removeBranch
unsigned MipsInstrInfo::removeBranch(MachineBasicBlock &MBB,
int *BytesRemoved) const {
assert(!BytesRemoved && "code size not handled");
MachineBasicBlock::reverse_iterator I = MBB.rbegin(), REnd = MBB.rend();
unsigned removed;
// Skip all the debug instructions.
while (I != REnd && I->isDebugValue())
++I;
if (I == REnd)
return 0;
MachineBasicBlock::iterator FirstBr = ++I.getReverse();
// Up to 2 branches are removed.
// Note that indirect branches are not removed.
for (removed = 0; I != REnd && removed < 2; ++I, ++removed)
if (!getAnalyzableBrOpc(I->getOpcode()))
break;
MBB.erase((--I).getReverse(), FirstBr);
return removed;
}示例3: removeBranch
unsigned MipsInstrInfo::removeBranch(MachineBasicBlock &MBB,
int *BytesRemoved) const {
assert(!BytesRemoved && "code size not handled");
MachineBasicBlock::reverse_iterator I = MBB.rbegin(), REnd = MBB.rend();
unsigned removed = 0;
// Up to 2 branches are removed.
// Note that indirect branches are not removed.
while (I != REnd && removed < 2) {
// Skip past debug instructions.
if (I->isDebugValue()) {
++I;
continue;
}
if (!getAnalyzableBrOpc(I->getOpcode()))
break;
// Remove the branch.
I->eraseFromParent();
I = MBB.rbegin();
++removed;
}
return removed;
}示例4: RemoveBranch
unsigned MipsInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
MachineBasicBlock::reverse_iterator I = MBB.rbegin(), REnd = MBB.rend();
MachineBasicBlock::reverse_iterator FirstBr;
unsigned removed;
// Skip all the debug instructions.
while (I != REnd && I->isDebugValue())
++I;
FirstBr = I;
// Up to 2 branches are removed.
// Note that indirect branches are not removed.
for (removed = 0; I != REnd && removed < 2; ++I, ++removed)
if (!getAnalyzableBrOpc(I->getOpcode()))
break;
MBB.erase(I.base(), FirstBr.base());
return removed;
}