fix Load bug

llvm-svn: 19987
diff --git a/llvm/lib/Target/Alpha/AlphaISelPattern.cpp b/llvm/lib/Target/Alpha/AlphaISelPattern.cpp
index 344117d..752be14 100644
--- a/llvm/lib/Target/Alpha/AlphaISelPattern.cpp
+++ b/llvm/lib/Target/Alpha/AlphaISelPattern.cpp
@@ -1046,7 +1046,7 @@
       SDOperand Chain   = N.getOperand(0);
       SDOperand Address = N.getOperand(1);
 
-      assert(DestType == MVT::i64 && "unknown Load dest type");
+      assert(N.getValue(0).getValueType() == MVT::i64 && "unknown Load dest type");
 
       if (Address.getOpcode() == ISD::GlobalAddress)
         {