When generating a vector the really slow way, via loads
and stores, handle the case where the element size is not
a valid target type correctly (PPC).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89521 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 4f0a229..4cd7ca1 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -1517,6 +1517,7 @@
// Create the stack frame object.
EVT VT = Node->getValueType(0);
EVT OpVT = Node->getOperand(0).getValueType();
+ EVT EltVT = VT.getVectorElementType();
DebugLoc dl = Node->getDebugLoc();
SDValue FIPtr = DAG.CreateStackTemporary(VT);
int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex();
@@ -1524,7 +1525,7 @@
// Emit a store of each element to the stack slot.
SmallVector<SDValue, 8> Stores;
- unsigned TypeByteSize = OpVT.getSizeInBits() / 8;
+ unsigned TypeByteSize = EltVT.getSizeInBits() / 8;
// Store (in the right endianness) the elements to memory.
for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) {
// Ignore undef elements.
@@ -1535,8 +1536,13 @@
SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType());
Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx);
- Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, Node->getOperand(i),
- Idx, SV, Offset));
+ // If EltVT smaller than OpVT, only store the bits necessary.
+ if (EltVT.bitsLT(OpVT))
+ Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl,
+ Node->getOperand(i), Idx, SV, Offset, EltVT));
+ else
+ Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl,
+ Node->getOperand(i), Idx, SV, Offset));
}
SDValue StoreChain;