Disable the Jitted Methods Counting Test When SSE(2) is Disabled (#94362

)

* Disabled the Jitted Methods Counting Test when SSE2 is disabled.

* Added disabling condition to the JMCT when SSE is not enabled.

src/tests/readytorun/JittedMethodsCountingTest/JittedMethodsCountingTest.cs

@@ -14,12 +14,14 @@ public class JittedMethodsCountingTest
     [Fact]
     public static int TestEntryPoint()
     {
-        // If either DOTNET_ReadyToRun or DOTNET_EnableHWIntrinsics are disabled
-        // (i.e. set to "0"), then this test ought to be skipped.
-        if (!IsReadyToRunEnabled() || !IsHardwareIntrinsicsEnabled())
+        // If either of DOTNET_ReadyToRun, DOTNET_EnableHWIntrinsics, or
+        // DOTNET_EnableSSE(2) are disabled (i.e. set to "0"), then this test
+        // ought to be skipped.
+        if (!IsReadyToRunEnabled() || !IsHardwareIntrinsicsEnabled() || !IsSSEEnabled())
         {
             Console.WriteLine("\nThis test is only supported in ReadyToRun scenarios"
-                              + " with Hardware Intrinsics enabled. Skipping...\n");
+                              + " with Hardware Intrinsics and SSE(2) enabled."
+                              + " Skipping...\n");
             return 100;
         }
 
@@ -48,4 +50,13 @@ private static bool IsHardwareIntrinsicsEnabled()
         return (string.IsNullOrEmpty(dotnetEnableHWIntrinsics)
                 || dotnetEnableHWIntrinsics != "0");
     }
+
+    private static bool IsSSEEnabled()
+    {
+        string? dotnetSSE = Environment.GetEnvironmentVariable("DOTNET_EnableSSE");
+        string? dotnetSSE2 = Environment.GetEnvironmentVariable("DOTNET_EnableSSE2");
+
+        return ((string.IsNullOrEmpty(dotnetSSE) || dotnetSSE != "0")
+                && (string.IsNullOrEmpty(dotnetSSE2) || dotnetSSE2 != "0"));
+    }
 }