diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMOpBase.td b/mlir/include/mlir/Dialect/LLVMIR/LLVMOpBase.td
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMOpBase.td
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMOpBase.td
@@ -80,7 +80,9 @@
   CPred<"$_self.isa<::mlir::LLVM::LLVMBFloatType, "
                    "::mlir::LLVM::LLVMHalfType, "
                    "::mlir::LLVM::LLVMFloatType, "
-                   "::mlir::LLVM::LLVMDoubleType>()">,
+                   "::mlir::LLVM::LLVMDoubleType, "
+                   "::mlir::LLVM::LLVMFP128Type, "
+                   "::mlir::LLVM::LLVMX86FP80Type>()">,
   "floating point LLVM type">;
 
 // Type constraint accepting any LLVM pointer type.
diff --git a/mlir/include/mlir/Dialect/LLVMIR/LLVMTypes.h b/mlir/include/mlir/Dialect/LLVMIR/LLVMTypes.h
--- a/mlir/include/mlir/Dialect/LLVMIR/LLVMTypes.h
+++ b/mlir/include/mlir/Dialect/LLVMIR/LLVMTypes.h
@@ -41,6 +41,8 @@
 class LLVMHalfType;
 class LLVMFloatType;
 class LLVMDoubleType;
+class LLVMFP128Type;
+class LLVMX86FP80Type;
 class LLVMIntegerType;
 
 //===----------------------------------------------------------------------===//
@@ -89,9 +91,12 @@
   bool isHalfTy() { return isa<LLVMHalfType>(); }
   bool isFloatTy() { return isa<LLVMFloatType>(); }
   bool isDoubleTy() { return isa<LLVMDoubleType>(); }
+  bool isFP128Ty() { return isa<LLVMFP128Type>(); }
+  bool isX86_FP80Ty() { return isa<LLVMX86FP80Type>(); }
   bool isFloatingPointTy() {
     return isa<LLVMHalfType>() || isa<LLVMBFloatType>() ||
-           isa<LLVMFloatType>() || isa<LLVMDoubleType>();
+           isa<LLVMFloatType>() || isa<LLVMDoubleType>() ||
+           isa<LLVMFP128Type>() || isa<LLVMX86FP80Type>();
   }
 
   /// Array type utilities.