diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/MachineInstr.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp index c952293976e..d602e2442f7 100644 --- a/llvm/lib/CodeGen/MachineInstr.cpp +++ b/llvm/lib/CodeGen/MachineInstr.cpp @@ -834,7 +834,9 @@ bool MachineInstr::addRegisterDead(unsigned IncomingReg, // There exists a super-register that's marked dead. if (RegInfo->isSuperRegister(IncomingReg, Reg)) return true; - if (RegInfo->isSubRegister(IncomingReg, Reg)) + if (RegInfo->getSubRegisters(IncomingReg) && + RegInfo->getSuperRegisters(Reg) && + RegInfo->isSubRegister(IncomingReg, Reg)) DeadOps.push_back(i); } } |
