Don't look for leaf values to store when lowering stores of
empty structs. This fixes PR2612.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54226 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 65753e5..6267eb9 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -2928,9 +2928,7 @@
void SelectionDAGLowering::visitStore(StoreInst &I) {
Value *SrcV = I.getOperand(0);
- SDValue Src = getValue(SrcV);
Value *PtrV = I.getOperand(1);
- SDValue Ptr = getValue(PtrV);
SmallVector<MVT, 4> ValueVTs;
SmallVector<uint64_t, 4> Offsets;
@@ -2939,6 +2937,12 @@
if (NumValues == 0)
return;
+ // Get the lowered operands. Note that we do this after
+ // checking if NumResults is zero, because with zero results
+ // the operands won't have values in the map.
+ SDValue Src = getValue(SrcV);
+ SDValue Ptr = getValue(PtrV);
+
SDValue Root = getRoot();
SmallVector<SDValue, 4> Chains(NumValues);
MVT PtrVT = Ptr.getValueType();