diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index a38b204..57aa2fe 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -3900,6 +3900,8 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) { SDV = DAG.getDbgValue(Variable, V, Offset, dl, SDNodeOrder); DAG.AddDbgValue(SDV, 0, false); } else { + bool createUndef = false; + // FIXME : Why not use getValue() directly ? SDValue &N = NodeMap[V]; if (N.getNode()) { if (!EmitFuncArgumentDbgValue(DI, V, Variable, Offset, N)) { @@ -3907,7 +3909,19 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) { N.getResNo(), Offset, dl, SDNodeOrder); DAG.AddDbgValue(SDV, N.getNode(), false); } - } else { + } else if (isa<PHINode>(V) && !V->use_empty()) { + SDValue N = getValue(V); + if (N.getNode()) { + if (!EmitFuncArgumentDbgValue(DI, V, Variable, Offset, N)) { + SDV = DAG.getDbgValue(Variable, N.getNode(), + N.getResNo(), Offset, dl, SDNodeOrder); + DAG.AddDbgValue(SDV, N.getNode(), false); + } + } else + createUndef = true; + } else + createUndef = true; + if (createUndef) { // We may expand this to cover more cases. One case where we have no // data available is an unreferenced parameter; we need this fallback. SDV = DAG.getDbgValue(Variable, UndefValue::get(V->getType()), |