[RISCV] Define vector vfsgnj/vfsgnjn/vfsgnjx intrinsics.

Define vector vfsgnj/vfsgnjn/vfsgnjx intrinsics and lower them to V
instructions.

We work with @rogfer01 from BSC to come out this patch.

Authored-by: Roger Ferrer Ibanez <[email protected]>
Co-Authored-by: Hsiangkai Wang <[email protected]>

Differential Revision: https://reviews.llvm.org/D93581

Author: Hsiangkai

llvm/include/llvm/IR/IntrinsicsRISCV.td

@@ -417,4 +417,8 @@ let TargetPrefix = "riscv" in {
   defm vfmul : RISCVBinaryAAX;
   defm vfdiv : RISCVBinaryAAX;
   defm vfrdiv : RISCVBinaryAAX;
+
+  defm vfsgnj : RISCVBinaryAAX;
+  defm vfsgnjn : RISCVBinaryAAX;
+  defm vfsgnjx : RISCVBinaryAAX;
 } // TargetPrefix = "riscv"

llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td

@@ -1507,6 +1507,13 @@ defm PseudoVFMUL       : VPseudoBinaryV_VV_VX</*IsFloat=*/1>;
 defm PseudoVFDIV       : VPseudoBinaryV_VV_VX</*IsFloat=*/1>;
 defm PseudoVFRDIV      : VPseudoBinaryV_VX</*IsFloat=*/1>;
 
+//===----------------------------------------------------------------------===//
+// 14.12. Vector Floating-Point Sign-Injection Instructions
+//===----------------------------------------------------------------------===//
+defm PseudoVFSGNJ      : VPseudoBinaryV_VV_VX</*IsFloat=*/1>;
+defm PseudoVFSGNJN     : VPseudoBinaryV_VV_VX</*IsFloat=*/1>;
+defm PseudoVFSGNJX     : VPseudoBinaryV_VV_VX</*IsFloat=*/1>;
+
 } // Predicates = [HasStdExtV, HasStdExtF]
 
 //===----------------------------------------------------------------------===//
@@ -1778,6 +1785,13 @@ defm "" : VPatBinaryV_VV_VX<"int_riscv_vfmul", "PseudoVFMUL", AllFloatVectors>;
 defm "" : VPatBinaryV_VV_VX<"int_riscv_vfdiv", "PseudoVFDIV", AllFloatVectors>;
 defm "" : VPatBinaryV_VX<"int_riscv_vfrdiv", "PseudoVFRDIV", AllFloatVectors>;
 
+//===----------------------------------------------------------------------===//
+// 14.12. Vector Floating-Point Sign-Injection Instructions
+//===----------------------------------------------------------------------===//
+defm "" : VPatBinaryV_VV_VX<"int_riscv_vfsgnj", "PseudoVFSGNJ", AllFloatVectors>;
+defm "" : VPatBinaryV_VV_VX<"int_riscv_vfsgnjn", "PseudoVFSGNJN", AllFloatVectors>;
+defm "" : VPatBinaryV_VV_VX<"int_riscv_vfsgnjx", "PseudoVFSGNJX", AllFloatVectors>;
+
 } // Predicates = [HasStdExtV, HasStdExtF]
 
 //===----------------------------------------------------------------------===//