[clang] [llvm] [SystemZ] Support fp16 vector ABI and basic codegen. (PR #171066)

[Jonas Paulsson via cfe-commits]

================
@@ -620,13 +621,15 @@ SystemZTargetLowering::SystemZTargetLowering(const TargetMachine &TM,
   // Handle floating-point vector types.
   if (Subtarget.hasVector()) {
     // Scalar-to-vector conversion is just a subreg.
+    setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v8f16, Legal);
     setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v4f32, Legal);
     setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v2f64, Legal);
 
     // Some insertions and extractions can be done directly but others
     // need to go via integers.
     setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v4f32, Custom);
     setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v2f64, Custom);
+    setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v8f16, Custom);
----------------
JonPsson1 wrote:

yes, added.

https://github.com/llvm/llvm-project/pull/171066