diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/MachineInstr.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index c952293976..d602e2442f 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/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); } } |