[SystemZ] Allow integer XOR involving high words

llvm-svn: 191759
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
index 5705489..8749f48 100644
--- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
@@ -901,6 +901,10 @@
     expandRIPseudo(MI, SystemZ::OILH, SystemZ::OIHH, false);
     return true;
 
+  case SystemZ::XIFMux:
+    expandRIPseudo(MI, SystemZ::XILF, SystemZ::XIHF, false);
+    return true;
+
   case SystemZ::ADJDYNALLOC:
     splitAdjDynAlloc(MI);
     return true;