diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td
@@ -53,6 +53,7 @@
 def LLVM_FFloorOp : LLVM_UnaryIntrinsicOp<"floor">;
 def LLVM_FMAOp : LLVM_TernarySameArgsIntrinsicOp<"fma">;
 def LLVM_FMulAddOp : LLVM_TernarySameArgsIntrinsicOp<"fmuladd">;
+def LLVM_IsFPClass : LLVM_BinaryIntrinsicOp<"is.fpclass">;
 def LLVM_Log10Op : LLVM_UnaryIntrinsicOp<"log10">;
 def LLVM_Log2Op : LLVM_UnaryIntrinsicOp<"log2">;
 def LLVM_LogOp : LLVM_UnaryIntrinsicOp<"log">;