Vector128.LessThan broken for some UIntPtr values on mono #96443
Description
Repro:
[Theory]
[InlineData(0ul)]
[InlineData(1ul)]
[InlineData(127ul)]
[InlineData(128ul)]
[InlineData(129ul)]
[InlineData((ulong)int.MaxValue)]
[InlineData(ulong.MaxValue)]
public void Repro2(ulong ulValue)
{
Vector128<UIntPtr> vector = Vector128.Create((UIntPtr)ulValue);
Assert.True(Vector128.EqualsAll(Vector128.LessThan(vector, Vector128<UIntPtr>.Zero), Vector128<UIntPtr>.Zero));
}That test passes for all of the supplied values (I haven't tried others) except for ulong.MaxValue, which fails:
System.Runtime.Intrinsics.Tests.Vectors.Vector128Tests.Repro2(ulValue: 18446744073709551615) [FAIL]
Assert.True() Failure
Expected: True
Actual: False
Stack Trace:
/_/src/libraries/System.Runtime.Intrinsics/tests/Vectors/Vector128Tests.cs(44,0): at System.Runtime.Intrinsics.Tests.Vectors.Vector128Tests.Repro2(UInt64 ulValue)
at System.Object.InvokeStub_Vector128Tests.Repro2(Object , Span`1 )
/_/src/libraries/System.Private.CoreLib/src/System/Reflection/MethodBaseInvoker.cs(95,0): at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
I haven't tried other values.