diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineCSE.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp index 4e6101f..e39aae5 100644 --- a/llvm/lib/CodeGen/MachineCSE.cpp +++ b/llvm/lib/CodeGen/MachineCSE.cpp @@ -184,7 +184,7 @@ bool MachineCSE::PerformTrivialCopyPropagation(MachineInstr *MI, continue; bool OnlyOneUse = MRI->hasOneNonDBGUse(Reg); MachineInstr *DefMI = MRI->getVRegDef(Reg); - if (!DefMI->isCopy()) + if (!DefMI || !DefMI->isCopy()) continue; Register SrcReg = DefMI->getOperand(1).getReg(); if (!SrcReg.isVirtual()) |