We don't have FP truncstores

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76039 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SystemZ/SystemZISelLowering.cpp b/lib/Target/SystemZ/SystemZISelLowering.cpp
index fcf55c1..7538bdc 100644
--- a/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -123,12 +123,15 @@
   setOperationAction(ISD::MULHS,            MVT::i64, Expand);
   setOperationAction(ISD::SMUL_LOHI,        MVT::i64, Expand);
 
+  // Lower some FP stuff
   setOperationAction(ISD::FSIN,             MVT::f32, Expand);
   setOperationAction(ISD::FSIN,             MVT::f64, Expand);
   setOperationAction(ISD::FCOS,             MVT::f32, Expand);
   setOperationAction(ISD::FCOS,             MVT::f64, Expand);
   setOperationAction(ISD::UINT_TO_FP,       MVT::i32, Expand);
   setOperationAction(ISD::UINT_TO_FP,       MVT::i64, Expand);
+
+  setTruncStoreAction(MVT::f64, MVT::f32, Expand);
 }
 
 SDValue SystemZTargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) {