diff options
| -rw-r--r-- | lib/CodeGen/MachineInstr.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index d3b2e9a91c..a227f25190 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/lib/CodeGen/MachineInstr.cpp @@ -698,7 +698,7 @@ bool MachineInstr::isRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx){ if (getOpcode() == TargetInstrInfo::INLINEASM) { assert(DefOpIdx >= 2); const MachineOperand &MO = getOperand(DefOpIdx); - if (!MO.isReg() || !MO.isDef()) + if (!MO.isReg() || !MO.isDef() || MO.getReg() == 0) return false; // Determine the actual operand no corresponding to this index. unsigned DefNo = 0; |