diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 3639f80474..c8d3e0df8d 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -760,12 +760,18 @@ SDValue DAGCombiner::PromoteIntBinOp(SDValue Op) { bool Replace1 = false; SDValue N1 = Op.getOperand(1); - SDValue NN1 = PromoteOperand(N1, PVT, Replace1); - if (NN1.getNode() == 0) - return SDValue(); + SDValue NN1; + if (N0 == N1) + NN1 = NN0; + else { + NN1 = PromoteOperand(N1, PVT, Replace1); + if (NN1.getNode() == 0) + return SDValue(); + } AddToWorkList(NN0.getNode()); - AddToWorkList(NN1.getNode()); + if (NN1.getNode()) + AddToWorkList(NN1.getNode()); if (Replace0) ReplaceLoadWithPromotedLoad(N0.getNode(), NN0.getNode()); |