add multi predictor support to l4, working for ver 5 of mat parallel

2026-04-09 18:07:49 +08:00
parent 0bad6bb480
commit f7187ca7fd
19 changed files with 653 additions and 187 deletions
@@ -0,0 +1,105 @@
+//-----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+// file="L4.IntrinsicKernel"
+// Project: StgSharp
+// AuthorGroup: Nitload
+// Copyright (c) Nitload. All rights reserved.
+//     
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//     
+// -----------------------------------------------------------------------
+// -----------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Numerics;
+using System.Runtime.Intrinsics;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StgSharp.HighPerformance.Memory
+{
+    public unsafe partial class L4
+    {
+
+        private interface IIntrinsicKernel
+        {
+
+            static IIntrinsicKernel Instance { get; } = Create();
+
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public void AgeAll(
+                        EvictionArray* eviction
+            );
+
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public int ScanEvict(
+                       byte* vPtr,
+                       Vector128<byte> three
+            );
+
+            private static IIntrinsicKernel Create()
+            {
+                if (Sse42.IsSupported)
+                {
+                    return new SseKernel();
+                } else
+                {
+                    throw new PlatformNotSupportedException("No supported intrinsic kernel found for current platform.");
+                }
+            }
+
+        }
+
+        private struct SseKernel : IIntrinsicKernel
+        {
+
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public void AgeAll(
+                        EvictionArray* eviction
+            )
+            {
+                Vector128<byte> one = Vector128.Create((byte)0x01);
+                Vector128<byte> max = Vector128.Create((byte)0x03);
+                byte* p = (byte*)eviction;
+                for (int i = 0; i < CacheLineCount; i += 16)
+                {
+                    Vector128<byte> v = Sse2.LoadVector128(p + i);
+                    v = Sse2.AddSaturate(v, one);
+                    v = Sse2.Min(v, max);
+                    Sse2.Store(p + i, v);
+                }
+            }
+
+            [MethodImpl(MethodImplOptions.AggressiveInlining)]
+            public int ScanEvict(
+                       byte* vPtr,
+                       Vector128<byte> three
+            )
+            {
+                Vector128<byte> v = Sse2.LoadVector128(vPtr);
+                Vector128<byte> mask = Sse2.CompareEqual(v, three);
+                return Sse2.MoveMask(mask);
+            }
+
+        }
+
+    }
+}