Add support to codegen for getresult instructions with undef operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50180 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index c9b334f..7e7a2f4 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3311,8 +3311,13 @@
void SelectionDAGLowering::visitGetResult(GetResultInst &I) {
- SDOperand Call = getValue(I.getOperand(0));
- setValue(&I, SDOperand(Call.Val, I.getIndex()));
+ if (UndefValue *UV = dyn_cast<UndefValue>(I.getOperand(0))) {
+ SDOperand Undef = DAG.getNode(ISD::UNDEF, TLI.getValueType(I.getType()));
+ setValue(&I, Undef);
+ } else {
+ SDOperand Call = getValue(I.getOperand(0));
+ setValue(&I, SDOperand(Call.Val, I.getIndex()));
+ }
}