add a case missing from the dag combiner that exposed the failure on
2005-10-21-longlonggtu.ll.
llvm-svn: 23875
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index b523bce..3efc25ae 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -2370,6 +2370,9 @@
// Canonicalize setgt X, Min --> setne X, Min
if ((Cond == ISD::SETGT || Cond == ISD::SETUGT) && C1 == MinVal)
return DAG.getSetCC(VT, N0, N1, ISD::SETNE);
+ // Canonicalize setlt X, Max --> setne X, Max
+ if ((Cond == ISD::SETLT || Cond == ISD::SETULT) && C1 == MaxVal)
+ return DAG.getSetCC(VT, N0, N1, ISD::SETNE);
// If we have setult X, 1, turn it into seteq X, 0
if ((Cond == ISD::SETLT || Cond == ISD::SETULT) && C1 == MinVal+1)