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Diffstat (limited to 'lib/CodeGen/AggressiveAntiDepBreaker.cpp')
| -rw-r--r-- | lib/CodeGen/AggressiveAntiDepBreaker.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/lib/CodeGen/AggressiveAntiDepBreaker.cpp index 4008a6a..84b226b 100644 --- a/lib/CodeGen/AggressiveAntiDepBreaker.cpp +++ b/lib/CodeGen/AggressiveAntiDepBreaker.cpp @@ -905,6 +905,18 @@ unsigned AggressiveAntiDepBreaker::BreakAntiDependencies( AggressiveAntiDepState::RegisterReference>::iterator Q = Range.first, QE = Range.second; Q != QE; ++Q) { Q->second.Operand->setReg(NewReg); + // If the SU for the instruction being updated has debug + // information related to the anti-dependency register, make + // sure to update that as well. + const SUnit *SU = MISUnitMap[Q->second.Operand->getParent()]; + for (unsigned i = 0, e = SU->DbgInstrList.size() ; i < e ; ++i) { + MachineInstr *DI = SU->DbgInstrList[i]; + assert (DI->getNumOperands()==3 && DI->getOperand(0).isReg() && + DI->getOperand(0).getReg() + && "Non register dbg_value attached to SUnit!"); + if (DI->getOperand(0).getReg() == AntiDepReg) + DI->getOperand(0).setReg(NewReg); + } } // We just went back in time and modified history; the |