+ // 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.
+ SmallVector<MachineInstr *, 4> &LRIDbgValues =
+ LiveDbgValueMap[LRI->VirtReg];
+ for (unsigned li = 0, le = LRIDbgValues.size(); li != le; ++li) {
+ MachineInstr *DBG = LRIDbgValues[li];
+ const MDNode *MDPtr =
+ DBG->getOperand(DBG->getNumOperands()-1).getMetadata();
+ int64_t Offset = 0;
+ if (DBG->getOperand(1).isImm())
+ Offset = DBG->getOperand(1).getImm();
+ 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();
+ if (MachineInstr *NewDV =
+ TII->emitFrameIndexDebugValue(*MF, FI, Offset, MDPtr, DL)) {
+ MachineBasicBlock *MBB = DBG->getParent();
+ MBB->insert(MI, 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();