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Also verify RegUnit intervals at uses.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161147 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-08-01 23:52:40 +00:00
parent 5641424a6c
commit a62e1e8bc6
1 changed files with 36 additions and 15 deletions
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51
lib/CodeGen/MachineVerifier.cpp
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@ -804,23 +804,44 @@ void MachineVerifier::checkLiveness(const MachineOperand *MO, unsigned MONum) {
}
// Check LiveInts liveness and kill.
if (TargetRegisterInfo::isVirtualRegister(Reg) &&
LiveInts && !LiveInts->isNotInMIMap(MI)) {
SlotIndex UseIdx = LiveInts->getInstructionIndex(MI).getRegSlot(true);
if (LiveInts->hasInterval(Reg)) {
const LiveInterval &LI = LiveInts->getInterval(Reg);
if (!LI.liveAt(UseIdx)) {
report("No live range at use", MO, MONum);
*OS << UseIdx << " is not live in " << LI << '\n';
if (LiveInts && !LiveInts->isNotInMIMap(MI)) {
SlotIndex UseIdx = LiveInts->getInstructionIndex(MI);
// Check the cached regunit intervals.
if (TargetRegisterInfo::isPhysicalRegister(Reg) && !isReserved(Reg)) {
for (MCRegUnitIterator Units(Reg, TRI); Units.isValid(); ++Units) {
if (const LiveInterval *LI = LiveInts->getCachedRegUnit(*Units)) {
LiveRangeQuery LRQ(*LI, UseIdx);
if (!LRQ.valueIn()) {
report("No live range at use", MO, MONum);
*OS << UseIdx << " is not live in " << PrintRegUnit(*Units, TRI)
<< ' ' << *LI << '\n';
}
if (MO->isKill() && !LRQ.isKill()) {
report("Live range continues after kill flag", MO, MONum);
*OS << PrintRegUnit(*Units, TRI) << ' ' << *LI << '\n';
}
}
}
// Check for extra kill flags.
// Note that we allow missing kill flags for now.
if (MO->isKill() && !LI.killedAt(UseIdx.getRegSlot())) {
report("Live range continues after kill flag", MO, MONum);
*OS << "Live range: " << LI << '\n';
}
if (TargetRegisterInfo::isVirtualRegister(Reg)) {
if (LiveInts->hasInterval(Reg)) {
// This is a virtual register interval.
const LiveInterval &LI = LiveInts->getInterval(Reg);
LiveRangeQuery LRQ(LI, UseIdx);
if (!LRQ.valueIn()) {
report("No live range at use", MO, MONum);
*OS << UseIdx << " is not live in " << LI << '\n';
}
// Check for extra kill flags.
// Note that we allow missing kill flags for now.
if (MO->isKill() && !LRQ.isKill()) {
report("Live range continues after kill flag", MO, MONum);
*OS << "Live range: " << LI << '\n';
}
} else {
report("Virtual register has no live interval", MO, MONum);
}
} else {
report("Virtual register has no Live interval", MO, MONum);
}
}