Don't produce invalid comparisons after legalize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58320 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 0622c552d5a218fc726bf6f1dd9943dadb583fee..c6c8e0359b3e7ec9c781a8805e5a09ffe7f99f9a 100644 (file)
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1720,7 +1720,8 @@ SDValue DAGCombiner::visitAND(SDNode *N) {
     if (LL == RL && LR == RR) {
       bool isInteger = LL.getValueType().isInteger();
       ISD::CondCode Result = ISD::getSetCCAndOperation(Op0, Op1, isInteger);
-      if (Result != ISD::SETCC_INVALID)
+      if (Result != ISD::SETCC_INVALID &&
+          (!AfterLegalize || TLI.isCondCodeLegal(Result, LL.getValueType())))
         return DAG.getSetCC(N0.getValueType(), LL, LR, Result);
     }
   }
@@ -1904,7 +1905,8 @@ SDValue DAGCombiner::visitOR(SDNode *N) {
     if (LL == RL && LR == RR) {
       bool isInteger = LL.getValueType().isInteger();
       ISD::CondCode Result = ISD::getSetCCOrOperation(Op0, Op1, isInteger);
-      if (Result != ISD::SETCC_INVALID)
+      if (Result != ISD::SETCC_INVALID &&
+          (!AfterLegalize || TLI.isCondCodeLegal(Result, LL.getValueType())))
         return DAG.getSetCC(N0.getValueType(), LL, LR, Result);
     }
   }