If we support structs as va_list, we must pass pointers to them to va_copy
See last commit for LangRef, this implements it on all targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22273 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 0c94ea7..fa6d6d4 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -855,10 +855,11 @@
std::pair<SDOperand,SDOperand>
TargetLowering::LowerVACopy(SDOperand Chain, SDOperand Src, SDOperand Dest,
SelectionDAG &DAG) {
- // We have no sane default behavior, just emit a useful error message and bail
- // out.
- std::cerr << "Variable arguments handling not implemented on this target!\n";
- abort();
+ //Default to returning the input list
+ SDOperand Val = DAG.getLoad(getPointerTy(), Chain, Src, DAG.getSrcValue(NULL));
+ SDOperand Result = DAG.getNode(ISD::STORE, MVT::Other, Val.getValue(1),
+ Val, Dest, DAG.getSrcValue(NULL));
+ return std::make_pair(Result, Result);
}
std::pair<SDOperand,SDOperand>