1 files changed, 62 insertions, 0 deletions
diff --git a/tests/src/JIT/HardwareIntrinsics/X86/Sse/LoadAlignedVector128.cs b/tests/src/JIT/HardwareIntrinsics/X86/Sse/LoadAlignedVector128.cs
new file mode 100644
index 0000000000..eaf6909941
--- /dev/null
+++ b/tests/src/JIT/HardwareIntrinsics/X86/Sse/LoadAlignedVector128.cs
@@ -0,0 +1,62 @@
+// 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.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Runtime.Intrinsics.X86;
+using System.Runtime.Intrinsics;
+
+namespace IntelHardwareIntrinsicTest
+{
+    class Program
+    {
+        const int Pass = 100;
+        const int Fail = 0;
+
+        static unsafe int Main(string[] args)
+        {
+            int testResult = Pass;
+
+            if (Sse.IsSupported)
+            {
+                byte* inBuffer = stackalloc byte[32];
+                float* inArray = Align(inBuffer, 16);
+                float* outArray = stackalloc float[4];
+
+                var vf = Sse.LoadAlignedVector128(inArray);
+                Unsafe.Write(outArray, vf);
+
+                for (var i = 0; i < 4; i++)
+                {
+                    if (BitConverter.SingleToInt32Bits(inArray[i]) != BitConverter.SingleToInt32Bits(outArray[i]))
+                    {
+                        Console.WriteLine("SSE LoadAlignedVector128 failed on float:");
+                        for (var n = 0; n < 4; n++)
+                        {
+                            Console.Write(outArray[n] + ", ");
+                        }
+                        Console.WriteLine();
+
+                        testResult = Fail;
+                        break;
+                    }
+                }
+            }
+
+            return testResult;
+        }
+
+        static unsafe float* Align(byte* buffer, byte expectedAlignment)
+        {
+            // Compute how bad the misalignment is, which is at most (expectedAlignment - 1).
+            // Then subtract that from the expectedAlignment and add it to the original address
+            // to compute the aligned address.
+
+            var misalignment = expectedAlignment - ((ulong)(buffer) % expectedAlignment);
+            return (float*)(buffer + misalignment);
+        }
+    }
+}