diff options
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 0a1885f329..c450136001 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -352,6 +352,8 @@ bool SimpleRegisterCoalescing::RemoveCopyByCommutingDef(const CoalescerPair &CP, AValNo->isUnused() || AValNo->hasPHIKill()) return false; MachineInstr *DefMI = li_->getInstructionFromIndex(AValNo->def); + if (!DefMI) + return false; const TargetInstrDesc &TID = DefMI->getDesc(); if (!TID.isCommutable()) return false; |