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-rw-r--r--lib/Target/PowerPC/PPCMCInstLower.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCMCInstLower.cpp b/lib/Target/PowerPC/PPCMCInstLower.cpp
index 819738b..0965cb3 100644
--- a/lib/Target/PowerPC/PPCMCInstLower.cpp
+++ b/lib/Target/PowerPC/PPCMCInstLower.cpp
@@ -184,6 +184,9 @@ void llvm::LowerPPCMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
llvm_unreachable("unknown operand type");
case MachineOperand::MO_Register:
assert(!MO.getSubReg() && "Subregs should be eliminated!");
+ assert(MO.getReg() > PPC::NoRegister &&
+ MO.getReg() < PPC::NUM_TARGET_REGS &&
+ "Invalid register for this target!");
MCOp = MCOperand::CreateReg(MO.getReg());
break;
case MachineOperand::MO_Immediate: