diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index f360a01..8fb4654 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -2642,15 +2642,29 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node, EVT VT = Node->getValueType(0); Tmp1 = Node->getOperand(0); Tmp2 = Node->getOperand(1); - SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0, - false, false, 0); + unsigned Align = Node->getConstantOperandVal(3); + + SDValue VAListLoad = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0, + false, false, 0); + SDValue VAList = VAListLoad; + + if (Align != 0 ) { + VAList = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, + DAG.getConstant(Align - 1, + TLI.getPointerTy())); + + VAList = DAG.getNode(ISD::AND, dl, TLI.getPointerTy(), VAList, + DAG.getConstant(-Align, + TLI.getPointerTy())); + } + // Increment the pointer, VAList, to the next vaarg Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, DAG.getConstant(TLI.getTargetData()-> getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), TLI.getPointerTy())); // Store the incremented VAList to the legalized pointer - Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0, + Tmp3 = DAG.getStore(VAListLoad.getValue(1), dl, Tmp3, Tmp2, V, 0, false, false, 0); // Load the actual argument out of the pointer VAList Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0, |