Add HardwareIntrinsics AVX-512 info (#2412)

Co-authored-by: Adam Sitnik <[email protected]>

Author: nietras

src/BenchmarkDotNet/BenchmarkDotNet.csproj

@@ -2,7 +2,7 @@
   <Import Project="..\..\build\common.props" />
   <PropertyGroup>
     <AssemblyTitle>BenchmarkDotNet</AssemblyTitle>
-    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0;net8.0</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <NoWarn>$(NoWarn);1701;1702;1705;1591;3005;NU1702;CS3001;CS3003</NoWarn>
     <AssemblyName>BenchmarkDotNet</AssemblyName>

src/BenchmarkDotNet/Portability/Cpu/HardwareIntrinsics.cs

@@ -1,8 +1,10 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Numerics;
 using BenchmarkDotNet.Environments;
-using System.Diagnostics.CodeAnalysis;
+using System.Text;
+
 #if NET6_0_OR_GREATER
 using System.Runtime.Intrinsics.X86;
 using System.Runtime.Intrinsics.Arm;
@@ -16,6 +18,8 @@ internal static class HardwareIntrinsics
 
         internal static string GetShortInfo()
         {
+            if (IsX86Avx512FSupported)
+                return GetShortAvx512Representation();
             if (IsX86Avx2Supported)
                 return "AVX2";
             else if (IsX86AvxSupported)
@@ -52,7 +56,9 @@ static IEnumerable<string> GetCurrentProcessInstructionSets(Platform platform)
                 {
                     case Platform.X86:
                     case Platform.X64:
-                        if (IsX86Avx2Supported) yield return "AVX2";
+
+                        if (IsX86Avx512FSupported) yield return GetShortAvx512Representation();
+                        else if (IsX86Avx2Supported) yield return "AVX2";
                         else if (IsX86AvxSupported) yield return "AVX";
                         else if (IsX86Sse42Supported) yield return "SSE4.2";
                         else if (IsX86Sse41Supported) yield return "SSE4.1";
@@ -90,6 +96,18 @@ static IEnumerable<string> GetCurrentProcessInstructionSets(Platform platform)
             }
         }
 
+        private static string GetShortAvx512Representation()
+        {
+            StringBuilder avx512 = new ("AVX-512F");
+            if (IsX86Avx512CDSupported) avx512.Append("+CD");
+            if (IsX86Avx512BWSupported) avx512.Append("+BW");
+            if (IsX86Avx512DQSupported) avx512.Append("+DQ");
+            if (IsX86Avx512FVLSupported) avx512.Append("+VL");
+            if (IsX86Avx512VbmiSupported) avx512.Append("+VBMI");
+
+            return avx512.ToString();
+        }
+
         internal static bool IsX86BaseSupported =>
 #if NET6_0_OR_GREATER
             X86Base.IsSupported;
@@ -153,6 +171,48 @@ static IEnumerable<string> GetCurrentProcessInstructionSets(Platform platform)
             GetIsSupported("System.Runtime.Intrinsics.X86.Avx2");
 #endif
 
+        internal static bool IsX86Avx512FSupported =>
+#if NET8_0_OR_GREATER
+            Avx512F.IsSupported;
+#else
+            GetIsSupported("System.Runtime.Intrinsics.X86.Avx512F");
+#endif
+
+        internal static bool IsX86Avx512FVLSupported =>
+#if NET8_0_OR_GREATER
+            Avx512F.VL.IsSupported;
+#else
+            GetIsSupported("System.Runtime.Intrinsics.X86.Avx512F+VL");
+#endif
+
+        internal static bool IsX86Avx512BWSupported =>
+#if NET8_0_OR_GREATER
+            Avx512BW.IsSupported;
+#else
+            GetIsSupported("System.Runtime.Intrinsics.X86.Avx512BW");
+#endif
+
+        internal static bool IsX86Avx512CDSupported =>
+#if NET8_0_OR_GREATER
+            Avx512CD.IsSupported;
+#else
+            GetIsSupported("System.Runtime.Intrinsics.X86.Avx512CD");
+#endif
+
+        internal static bool IsX86Avx512DQSupported =>
+#if NET8_0_OR_GREATER
+            Avx512DQ.IsSupported;
+#else
+            GetIsSupported("System.Runtime.Intrinsics.X86.Avx512DQ");
+#endif
+
+        internal static bool IsX86Avx512VbmiSupported =>
+#if NET8_0_OR_GREATER
+            Avx512Vbmi.IsSupported;
+#else
+            GetIsSupported("System.Runtime.Intrinsics.X86.Avx512Vbmi");
+#endif
+
         internal static bool IsX86AesSupported =>
 #if NET6_0_OR_GREATER
             System.Runtime.Intrinsics.X86.Aes.IsSupported;
@@ -211,8 +271,12 @@ static IEnumerable<string> GetCurrentProcessInstructionSets(Platform platform)
             GetIsSupported("System.Runtime.Intrinsics.X86.AvxVnni");
 #endif
 
-        // X86Serialize was introduced in .NET 7.0, BDN does not target it so we need to use reflection
-        internal static bool IsX86SerializeSupported => GetIsSupported("System.Runtime.Intrinsics.X86.X86Serialize");
+        internal static bool IsX86SerializeSupported =>
+#if NET7_0_OR_GREATER
+            X86Serialize.IsSupported;
+#else
+            GetIsSupported("System.Runtime.Intrinsics.X86.X86Serialize");
+#endif
 
         internal static bool IsArmBaseSupported =>
 #if NET6_0_OR_GREATER

src/BenchmarkDotNet/Portability/Libc.cs

@@ -2,7 +2,9 @@
 
 namespace BenchmarkDotNet.Portability
 {
+#pragma warning disable CS8981 // The type name 'libc' only contains lower-cased ascii characters. Such names may become reserved for the language.
     internal static class libc
+#pragma warning restore CS8981
     {
         [DllImport(nameof(libc))]
         internal static extern int getppid();

src/BenchmarkDotNet/Toolchains/NativeAot/Generator.cs

@@ -161,7 +161,8 @@ private string GetILCompilerPackageReference()
 
         private string GetTrimmingSettings()
             => rootAllApplicationAssemblies
-                ? "" // use the defaults
+                // Use the defaults
+                ? ""
                 // TrimMode is set in explicit way as for older versions it might have different default value
                 : "<TrimMode>link</TrimMode><TrimmerDefaultAction>link</TrimmerDefaultAction>";
 
@@ -248,6 +249,11 @@ private IEnumerable<string> GetCurrentProcessInstructionSets(Platform platform)
                     if (HardwareIntrinsics.IsX86Sse42Supported) yield return "sse4.2";
                     if (HardwareIntrinsics.IsX86AvxSupported) yield return "avx";
                     if (HardwareIntrinsics.IsX86Avx2Supported) yield return "avx2";
+                    if (HardwareIntrinsics.IsX86Avx512FSupported) yield return "avx-512f";
+                    if (HardwareIntrinsics.IsX86Avx512BWSupported) yield return "avx-512bw";
+                    if (HardwareIntrinsics.IsX86Avx512CDSupported) yield return "avx-512cd";
+                    if (HardwareIntrinsics.IsX86Avx512DQSupported) yield return "avx-512dq";
+                    if (HardwareIntrinsics.IsX86Avx512VbmiSupported) yield return "avx-512vbmi";
                     if (HardwareIntrinsics.IsX86AesSupported) yield return "aes";
                     if (HardwareIntrinsics.IsX86Bmi1Supported) yield return "bmi";
                     if (HardwareIntrinsics.IsX86Bmi2Supported) yield return "bmi2";