diff options
| -rw-r--r-- | lib/CodeGen/MachineRegisterInfo.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp index 95d7a7dd68..34518fa46b 100644 --- a/lib/CodeGen/MachineRegisterInfo.cpp +++ b/lib/CodeGen/MachineRegisterInfo.cpp @@ -305,6 +305,8 @@ void MachineRegisterInfo::dumpUses(unsigned Reg) const { #endif void MachineRegisterInfo::freezeReservedRegs(const MachineFunction &MF) { + assert (!reservedRegsFrozen() && + "freezeReservedRegs should only be called once!"); ReservedRegs = TRI->getReservedRegs(MF); assert(ReservedRegs.size() == TRI->getNumRegs() && "Invalid ReservedRegs vector from target"); |