+ // If this register is used by DBG_VALUE then insert new DBG_VALUE to
+ // identify spilled location as the place to find corresponding variable's
+ // value.
+ SmallVectorImpl<MachineInstr *> &LRIDbgValues =
+ LiveDbgValueMap[LRI->VirtReg];
+ for (unsigned li = 0, le = LRIDbgValues.size(); li != le; ++li) {
+ MachineInstr *DBG = LRIDbgValues[li];
+ const MDNode *MDPtr = DBG->getOperand(2).getMetadata();
+ bool IsIndirect = DBG->isIndirectDebugValue();
+ uint64_t Offset = IsIndirect ? DBG->getOperand(1).getImm() : 0;
+ DebugLoc DL;
+ if (MI == MBB->end()) {
+ // If MI is at basic block end then use last instruction's location.
+ MachineBasicBlock::iterator EI = MI;
+ DL = (--EI)->getDebugLoc();
+ } else
+ DL = MI->getDebugLoc();
+ MachineBasicBlock *MBB = DBG->getParent();
+ MachineInstr *NewDV =
+ BuildMI(*MBB, MI, DL, TII->get(TargetOpcode::DBG_VALUE))
+ .addFrameIndex(FI).addImm(Offset).addMetadata(MDPtr);
+ (void)NewDV;
+ DEBUG(dbgs() << "Inserting debug info due to spill:" << "\n" << *NewDV);
+ }
+ // Now this register is spilled there is should not be any DBG_VALUE
+ // pointing to this register because they are all pointing to spilled value
+ // now.
+ LRIDbgValues.clear();