1 files changed, 64 insertions, 0 deletions
diff --git a/src/System.Private.CoreLib/shared/System/Runtime/Intrinsics/X86/Bmi2.cs b/src/System.Private.CoreLib/shared/System/Runtime/Intrinsics/X86/Bmi2.cs
new file mode 100644
index 000000000..d8fb1521a
--- /dev/null
+++ b/src/System.Private.CoreLib/shared/System/Runtime/Intrinsics/X86/Bmi2.cs
@@ -0,0 +1,64 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.Intrinsics;
+
+namespace System.Runtime.Intrinsics.X86
+{
+    /// <summary>
+    /// This class provides access to Intel BMI2 hardware instructions via intrinsics
+    /// </summary>
+    [CLSCompliant(false)]
+    public abstract class Bmi2
+    {
+        internal Bmi2() { }
+
+        public static bool IsSupported { get => IsSupported; }
+
+        /// <summary>
+        /// unsigned int _bzhi_u32 (unsigned int a, unsigned int index)
+        ///   BZHI r32a, reg/m32, r32b
+        /// </summary>
+        public static uint ZeroHighBits(uint value, uint index) => ZeroHighBits(value, index);
+        /// <summary>
+        /// unsigned __int64 _bzhi_u64 (unsigned __int64 a, unsigned int index)
+        ///   BZHI r64a, reg/m32, r64b
+        /// </summary>
+        public static ulong ZeroHighBits(ulong value, ulong index) => ZeroHighBits(value, index);
+
+        /// <summary>
+        /// unsigned int _mulx_u32 (unsigned int a, unsigned int b, unsigned int* hi)
+        ///   MULX r32a, r32b, reg/m32
+        /// </summary>
+        public static unsafe uint MultiplyNoFlags(uint left, uint right, uint* high) => MultiplyNoFlags(left, right, high);
+        /// <summary>
+        /// unsigned __int64 _mulx_u64 (unsigned __int64 a, unsigned __int64 b, unsigned __int64* hi)
+        ///   MULX r64a, r64b, reg/m64
+        /// </summary>
+        public static unsafe ulong MultiplyNoFlags(ulong left, ulong right, ulong* high) => MultiplyNoFlags(left, right, high);
+
+        /// <summary>
+        /// unsigned int _pdep_u32 (unsigned int a, unsigned int mask)
+        ///   PDEP r32a, r32b, reg/m32
+        /// </summary>
+        public static uint ParallelBitDeposit(uint value, uint mask) => ParallelBitDeposit(value, mask);
+        /// <summary>
+        /// unsigned __int64 _pdep_u64 (unsigned __int64 a, unsigned __int64 mask)
+        ///   PDEP r64a, r64b, reg/m64
+        /// </summary>
+        public static ulong ParallelBitDeposit(ulong value, ulong mask) => ParallelBitDeposit(value, mask);
+
+        /// <summary>
+        /// unsigned int _pext_u32 (unsigned int a, unsigned int mask)
+        ///   PEXT r32a, r32b, reg/m32
+        /// </summary>
+        public static uint ParallelBitExtract(uint value, uint mask) => ParallelBitExtract(value, mask);
+        /// <summary>
+        /// unsigned __int64 _pext_u64 (unsigned __int64 a, unsigned __int64 mask)
+        ///   PEXT r64a, r64b, reg/m64
+        /// </summary>
+        public static ulong ParallelBitExtract(ulong value, ulong mask) => ParallelBitExtract(value, mask);
+    }
+}