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Handle regmasks in the machine code verifier.

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llvm-svn: 151607
This commit is contained in:
Jakob Stoklund Olesen 2012-02-28 01:42:41 +00:00
parent c6377253f7
commit e3a308c116
1 changed files with 15 additions and 0 deletions
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15
lib/CodeGen/MachineVerifier.cpp
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@ -69,6 +69,7 @@ namespace {
unsigned foundErrors;
typedef SmallVector<unsigned, 16> RegVector;
typedef SmallVector<const uint32_t*, 4> RegMaskVector;
typedef DenseSet<unsigned> RegSet;
typedef DenseMap<unsigned, const MachineInstr*> RegMap;
@ -78,6 +79,7 @@ namespace {
BitVector regsAllocatable;
RegSet regsLive;
RegVector regsDefined, regsDead, regsKilled;
RegMaskVector regMasks;
RegSet regsLiveInButUnused;
SlotIndex lastIndex;
@ -314,6 +316,7 @@ bool MachineVerifier::runOnMachineFunction(MachineFunction &MF) {
regsDefined.clear();
regsDead.clear();
regsKilled.clear();
regMasks.clear();
regsLiveInButUnused.clear();
MBBInfoMap.clear();
@ -819,6 +822,10 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) {
break;
}
case MachineOperand::MO_RegisterMask:
regMasks.push_back(MO->getRegMask());
break;
case MachineOperand::MO_MachineBasicBlock:
if (MI->isPHI() && !MO->getMBB()->isSuccessor(MI->getParent()))
report("PHI operand is not in the CFG", MO, MONum);
@ -849,6 +856,14 @@ void MachineVerifier::visitMachineInstrAfter(const MachineInstr *MI) {
BBInfo &MInfo = MBBInfoMap[MI->getParent()];
set_union(MInfo.regsKilled, regsKilled);
set_subtract(regsLive, regsKilled); regsKilled.clear();
// Kill any masked registers.
while (!regMasks.empty()) {
const uint32_t *Mask = regMasks.pop_back_val();
for (RegSet::iterator I = regsLive.begin(), E = regsLive.end(); I != E; ++I)
if (TargetRegisterInfo::isPhysicalRegister(*I) &&
MachineOperand::clobbersPhysReg(Mask, *I))
regsDead.push_back(*I);
}
set_subtract(regsLive, regsDead); regsDead.clear();
set_union(regsLive, regsDefined); regsDefined.clear();