diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 6974e7006ce..fdbd3e1105b 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -624,13 +624,23 @@ void SelectionDAGLegalize::LegalizeStoreOps(SDNode *Node) { assert(!StVT.isVector() && "Vector Stores are handled in LegalizeVectorOps"); + SDValue Result; + // TRUNCSTORE:i16 i32 -> STORE i16 - assert(TLI.isTypeLegal(StVT) && - "Do not know how to expand this store!"); - Value = DAG.getNode(ISD::TRUNCATE, dl, StVT, Value); - SDValue Result = - DAG.getStore(Chain, dl, Value, Ptr, ST->getPointerInfo(), - Alignment, MMOFlags, AAInfo); + if (TLI.isTypeLegal(StVT)) { + Value = DAG.getNode(ISD::TRUNCATE, dl, StVT, Value); + Result = DAG.getStore(Chain, dl, Value, Ptr, ST->getPointerInfo(), + Alignment, MMOFlags, AAInfo); + } else { + // The in-memory type isn't legal. Truncate to the type it would promote + // to, and then do a truncstore. + Value = DAG.getNode(ISD::TRUNCATE, dl, + TLI.getTypeToTransformTo(*DAG.getContext(), StVT), + Value); + Result = DAG.getTruncStore(Chain, dl, Value, Ptr, ST->getPointerInfo(), + StVT, Alignment, MMOFlags, AAInfo); + } + ReplaceNode(SDValue(Node, 0), Result); break; } |
