diff options
| -rw-r--r-- | lib/Target/R600/AMDGPUISelDAGToDAG.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Target/R600/AMDGPUISelDAGToDAG.cpp b/lib/Target/R600/AMDGPUISelDAGToDAG.cpp index 22bdb90..77ca885 100644 --- a/lib/Target/R600/AMDGPUISelDAGToDAG.cpp +++ b/lib/Target/R600/AMDGPUISelDAGToDAG.cpp @@ -115,7 +115,10 @@ const TargetRegisterClass *AMDGPUDAGToDAGISel::getOperandRegClass(SDNode *N, switch (N->getMachineOpcode()) { default: { const MCInstrDesc &Desc = TM.getInstrInfo()->get(N->getMachineOpcode()); - int RegClass = Desc.OpInfo[Desc.getNumDefs() + OpNo].RegClass; + unsigned OpIdx = Desc.getNumDefs() + OpNo; + if (OpIdx >= Desc.getNumOperands()) + return NULL; + int RegClass = Desc.OpInfo[OpIdx].RegClass; if (RegClass == -1) { return NULL; } |