diff options
| -rw-r--r-- | lib/CodeGen/MachineInstr.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index ba9be6a870..2cafbd418f 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -1064,6 +1064,8 @@ bool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const { unsigned MachineInstr::isConstantValuePHI() const { if (getOpcode() != TargetInstrInfo::PHI) return 0; + if (getNumOperands() <= 1) + return 0; unsigned Reg = getOperand(1).getReg(); for (unsigned i = 3, e = getNumOperands(); i < e; i += 2) |