diff options
| -rw-r--r-- | lib/CodeGen/TwoAddressInstructionPass.cpp | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index aca85b2aa1..2ed6be4f00 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -581,19 +581,9 @@ commuteInstruction(MachineBasicBlock::iterator &mi, } DEBUG(dbgs() << "2addr: COMMUTED TO: " << *NewMI); - // If the instruction changed to commute it, update livevar. - if (NewMI != MI) { - if (LV) - // Update live variables - LV->replaceKillInstruction(RegC, MI, NewMI); - if (LIS) - LIS->ReplaceMachineInstrInMaps(MI, NewMI); - - MBB->insert(mi, NewMI); // Insert the new inst - MBB->erase(mi); // Nuke the old inst. - mi = NewMI; - DistanceMap.insert(std::make_pair(NewMI, Dist)); - } + assert(NewMI == MI && + "TargetInstrInfo::commuteInstruction() should not return a new " + "instruction unless it was requested."); // Update source register map. unsigned FromRegC = getMappedReg(RegC, SrcRegMap); |