Return "(c1 + c2)" instead of yet another ADD node (which made this a
no-op).
llvm-svn: 46922
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index be4e010..3a03f2c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -923,7 +923,7 @@
return N1;
// fold (add c1, c2) -> c1+c2
if (N0C && N1C)
- return DAG.getNode(ISD::ADD, VT, N0, N1);
+ return DAG.getConstant(N0C->getValue() + N1C->getValue(), VT);
// canonicalize constant to RHS
if (N0C && !N1C)
return DAG.getNode(ISD::ADD, VT, N1, N0);