diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index e2fd0076cd3..2e5111dee56 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -1115,6 +1115,7 @@ TwoAddressInstructionPass::RescheduleKillAboveMI(MachineBasicBlock *MBB, MCID.isTerminator()) // Don't move pass calls, etc. return false; + SmallVector OtherDefs; for (unsigned i = 0, e = OtherMI->getNumOperands(); i != e; ++i) { const MachineOperand &MO = OtherMI->getOperand(i); if (!MO.isReg()) @@ -1131,15 +1132,20 @@ TwoAddressInstructionPass::RescheduleKillAboveMI(MachineBasicBlock *MBB, // Don't want to extend other live ranges and update kills. return false; } else { - if (Uses.count(MOReg)) - return false; - if (TargetRegisterInfo::isPhysicalRegister(MOReg) && - LiveDefs.count(MOReg)) - return false; - // Physical register def is seen. - Defs.erase(MOReg); + OtherDefs.push_back(MOReg); } } + + for (unsigned i = 0, e = OtherDefs.size(); i != e; ++i) { + unsigned MOReg = OtherDefs[i]; + if (Uses.count(MOReg)) + return false; + if (TargetRegisterInfo::isPhysicalRegister(MOReg) && + LiveDefs.count(MOReg)) + return false; + // Physical register def is seen. + Defs.erase(MOReg); + } } // Move the old kill above MI, don't forget to move debug info as well.