diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 30c8d98405..412b47e2a4 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1976,7 +1976,10 @@ SDOperand DAGCombiner::visitSTORE(SDNode *N) { // If this is a store that kills a previous store, remove the previous store. if (Chain.getOpcode() == ISD::STORE && Chain.getOperand(2) == Ptr && - Chain.Val->hasOneUse() /* Avoid introducing DAG cycles */) { + Chain.Val->hasOneUse() /* Avoid introducing DAG cycles */ && + // Make sure that these stores are the same value type: + // FIXME: we really care that the second store is >= size of the first. + Value.getValueType() == Chain.getOperand(1).getValueType()) { // Create a new store of Value that replaces both stores. SDNode *PrevStore = Chain.Val; if (PrevStore->getOperand(1) == Value) // Same value multiply stored. |