diff options
| -rw-r--r-- | llvm/lib/CodeGen/RegisterCoalescer.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp index f0e62412ba7..82043c2bf7d 100644 --- a/llvm/lib/CodeGen/RegisterCoalescer.cpp +++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp @@ -762,6 +762,7 @@ bool RegisterCoalescer::reMaterializeTrivialDef(CoalescerPair &CP, return false; // Only support subregister destinations when the def is read-undef. MachineOperand &DstOperand = CopyMI->getOperand(0); + unsigned CopyDstReg = DstOperand.getReg(); if (DstOperand.getSubReg() && !DstOperand.isUndef()) return false; @@ -837,12 +838,12 @@ bool RegisterCoalescer::reMaterializeTrivialDef(CoalescerPair &CP, NewMI->getOperand(0).setSubReg( TRI->composeSubRegIndices(SrcIdx, DefMI->getOperand(0).getSubReg())); } - } else if (NewMI->getOperand(0).getReg() != DstReg) { + } else if (NewMI->getOperand(0).getReg() != CopyDstReg) { // The New instruction may be defining a sub-register of what's actually // been asked for. If so it must implicitly define the whole thing. assert(TargetRegisterInfo::isPhysicalRegister(DstReg) && "Only expect virtual or physical registers in remat"); - NewMI->addOperand(MachineOperand::CreateReg(DstReg, + NewMI->addOperand(MachineOperand::CreateReg(CopyDstReg, true /*IsDef*/, true /*IsImp*/, false /*IsKill*/)); |
