[ARM] Add vector vrint tests and fix FP16 to expand.

Author: davemgreen

llvm/lib/Target/ARM/ARMISelLowering.cpp

@@ -901,7 +901,6 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::FEXP, MVT::v2f64, Expand);
     setOperationAction(ISD::FEXP2, MVT::v2f64, Expand);
     setOperationAction(ISD::FEXP10, MVT::v2f64, Expand);
-    // FIXME: Create unittest for FCEIL, FTRUNC, FRINT, FNEARBYINT, FFLOOR.
     setOperationAction(ISD::FCEIL, MVT::v2f64, Expand);
     setOperationAction(ISD::FTRUNC, MVT::v2f64, Expand);
     setOperationAction(ISD::FRINT, MVT::v2f64, Expand);
@@ -951,6 +950,12 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::FNEARBYINT, MVT::v2f32, Expand);
     setOperationAction(ISD::FFLOOR, MVT::v2f32, Expand);
 
+    for (ISD::NodeType Op : {ISD::FFLOOR, ISD::FNEARBYINT, ISD::FCEIL,
+                              ISD::FRINT, ISD::FTRUNC, ISD::FROUNDEVEN}) {
+      setOperationAction(Op, MVT::v4f16, Expand);
+      setOperationAction(Op, MVT::v8f16, Expand);
+    }
+
     // Neon does not support some operations on v1i64 and v2i64 types.
     setOperationAction(ISD::MUL, MVT::v1i64, Expand);
     // Custom handling for some quad-vector types to detect VMULL.