assert(LRCalc && "LRCalc not initialized.");
assert(LI.empty() && "Should only compute empty intervals.");
LRCalc->reset(MF, getSlotIndexes(), DomTree, &getVNInfoAllocator());
- LRCalc->calculate(LI);
+ LRCalc->calculate(LI, MRI->shouldTrackSubRegLiveness(LI.reg));
computeDeadValues(LI, nullptr);
}
// Is the register live before? Otherwise we may have to add a read-undef
// flag for subregister defs.
- if (MRI->tracksSubRegLiveness()) {
+ if (MRI->shouldTrackSubRegLiveness(LI.reg)) {
if ((I == LI.begin() || std::prev(I)->end < Def) && !VNI->isPHIDef()) {
MachineInstr *MI = getInstructionFromIndex(Def);
MI->addRegisterDefReadUndef(LI.reg);
RU.push_back(std::make_pair(&RURange, RURange.find(LI.begin()->end)));
}
- if (MRI->tracksSubRegLiveness()) {
+ if (MRI->subRegLivenessEnabled()) {
SRs.clear();
for (const LiveInterval::SubRange &SR : LI.subranges()) {
SRs.push_back(std::make_pair(&SR, SR.find(LI.begin()->end)));
goto CancelKill;
}
- if (MRI->tracksSubRegLiveness()) {
+ if (MRI->subRegLivenessEnabled()) {
// When reading a partial undefined value we must not add a kill flag.
// The regalloc might have used the undef lane for something else.
// Example: