Fix a dag combiner bug exposed by my recent instcombine patch. This fixes

CodeGen/Generic/2006-11-10-DAGCombineMiscompile.ll and PPC gsm/toast

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31644 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 462b55583d6555a24ca999ac0cde6fe177320bcb..b91d946103e0c7fc5f11b06abd8147286f15bcc2 100644 (file)
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1723,7 +1723,7 @@ SDOperand DAGCombiner::visitXOR(SDNode *N) {
     abort();
   }
   // fold !(x or y) -> (!x and !y) iff x or y are setcc
-  if (N1C && N1C->getValue() == 1 && 
+  if (N1C && N1C->getValue() == 1 && VT == MVT::i1 &&
       (N0.getOpcode() == ISD::OR || N0.getOpcode() == ISD::AND)) {
     SDOperand LHS = N0.getOperand(0), RHS = N0.getOperand(1);
     if (isOneUseSetCC(RHS) || isOneUseSetCC(LHS)) {