RISC-V: Support vectorizing FMINIMUMNUM and FMAXIMUMNUM

RISC-V V extension support vfmax and vfmin, which follow IEEE754-2019.
We can use them directly.

Author: wzssyqa

llvm/lib/Target/RISCV/RISCVISelLowering.cpp

@@ -969,6 +969,8 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
     static const unsigned ZvfhminZvfbfminPromoteOps[] = {
         ISD::FMINNUM,
         ISD::FMAXNUM,
+        ISD::FMINIMUMNUM,
+        ISD::FMAXIMUMNUM,
         ISD::FADD,
         ISD::FSUB,
         ISD::FMUL,
@@ -1037,7 +1039,9 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
       // Expand various condition codes (explained above).
       setCondCodeAction(VFPCCToExpand, VT, Expand);
 
-      setOperationAction({ISD::FMINNUM, ISD::FMAXNUM}, VT, Legal);
+      setOperationAction(
+          {ISD::FMINNUM, ISD::FMAXNUM, ISD::FMAXIMUMNUM, ISD::FMINIMUMNUM}, VT,
+          Legal);
       setOperationAction({ISD::FMAXIMUM, ISD::FMINIMUM}, VT, Custom);
 
       setOperationAction({ISD::FTRUNC, ISD::FCEIL, ISD::FFLOOR, ISD::FROUND,
@@ -1455,7 +1459,8 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
         setOperationAction({ISD::FADD, ISD::FSUB, ISD::FMUL, ISD::FDIV,
                             ISD::FNEG, ISD::FABS, ISD::FCOPYSIGN, ISD::FSQRT,
                             ISD::FMA, ISD::FMINNUM, ISD::FMAXNUM,
-                            ISD::IS_FPCLASS, ISD::FMAXIMUM, ISD::FMINIMUM},
+                            ISD::FMINIMUMNUM, ISD::FMAXIMUMNUM, ISD::IS_FPCLASS,
+                            ISD::FMAXIMUM, ISD::FMINIMUM},
                            VT, Custom);
 
         setOperationAction({ISD::FTRUNC, ISD::FCEIL, ISD::FFLOOR, ISD::FROUND,
@@ -6913,9 +6918,11 @@ static unsigned getRISCVVLOp(SDValue Op) {
   case ISD::VP_FP_TO_UINT:
     return RISCVISD::VFCVT_RTZ_XU_F_VL;
   case ISD::FMINNUM:
+  case ISD::FMINIMUMNUM:
   case ISD::VP_FMINNUM:
     return RISCVISD::VFMIN_VL;
   case ISD::FMAXNUM:
+  case ISD::FMAXIMUMNUM:
   case ISD::VP_FMAXNUM:
     return RISCVISD::VFMAX_VL;
   case ISD::LRINT:
@@ -7951,6 +7958,8 @@ SDValue RISCVTargetLowering::LowerOperation(SDValue Op,
   case ISD::FMA:
   case ISD::FMINNUM:
   case ISD::FMAXNUM:
+  case ISD::FMINIMUMNUM:
+  case ISD::FMAXIMUMNUM:
     if (isPromotedOpNeedingSplit(Op, Subtarget))
       return SplitVectorOp(Op, DAG);
     [[fallthrough]];