[LLVM][CodeGen][SVE] Add ISel for bfloat scalable vector compares. (#138707)

Author: paulwalker-arm

llvm/lib/Target/AArch64/AArch64ISelLowering.cpp

@@ -1758,18 +1758,18 @@ AArch64TargetLowering::AArch64TargetLowering(const TargetMachine &TM,
 
     for (auto Opcode :
          {ISD::FCEIL, ISD::FDIV, ISD::FFLOOR, ISD::FNEARBYINT, ISD::FRINT,
-          ISD::FROUND, ISD::FROUNDEVEN, ISD::FSQRT, ISD::FTRUNC}) {
+          ISD::FROUND, ISD::FROUNDEVEN, ISD::FSQRT, ISD::FTRUNC, ISD::SETCC}) {
       setOperationPromotedToType(Opcode, MVT::nxv2bf16, MVT::nxv2f32);
       setOperationPromotedToType(Opcode, MVT::nxv4bf16, MVT::nxv4f32);
-      setOperationAction(Opcode, MVT::nxv8bf16, Expand);
+      setOperationPromotedToType(Opcode, MVT::nxv8bf16, MVT::nxv8f32);
     }
 
     if (!Subtarget->hasSVEB16B16()) {
       for (auto Opcode : {ISD::FADD, ISD::FMA, ISD::FMAXIMUM, ISD::FMAXNUM,
                           ISD::FMINIMUM, ISD::FMINNUM, ISD::FMUL, ISD::FSUB}) {
         setOperationPromotedToType(Opcode, MVT::nxv2bf16, MVT::nxv2f32);
         setOperationPromotedToType(Opcode, MVT::nxv4bf16, MVT::nxv4f32);
-        setOperationAction(Opcode, MVT::nxv8bf16, Expand);
+        setOperationPromotedToType(Opcode, MVT::nxv8bf16, MVT::nxv8f32);
       }
     }