The live interval may be used for a spill slot as well, and that spill slot
could be shared by split registers. We cannot shrink it, even if we know the
current register won't need the spill slot in that range.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110721
91177308-0d34-0410-b5e6-
96231b3b80d8
lis_.RemoveMachineInstrFromMaps(DefMI);
vrm_.RemoveMachineInstrFromMaps(DefMI);
DefMI->eraseFromParent();
- li_->removeValNo(VNI);
+ VNI->setIsDefAccurate(false);
anyRemoved = true;
}
MachineBasicBlock::iterator NextMI = MI;
++NextMI;
if (NextMI != MI->getParent()->end() && !lis_.isNotInMIMap(NextMI)) {
- SlotIndex NearIdx = lis_.getInstructionIndex(NextMI);
- if (li_->liveAt(NearIdx))
+ VNInfo *VNI = li_->getVNInfoAt(lis_.getInstructionIndex(NextMI));
+ if (VNI && (VNI->hasPHIKill() || usedValues_.count(VNI)))
continue;
}
DEBUG(dbgs() << "Removing debug info due to remat:" << "\t" << *MI);