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[mono] Fix Type equality comparisons #52791

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[mono] Fix Type equality comparisons #52791

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23 changes: 23 additions & 0 deletions src/libraries/System.Private.CoreLib/src/System/Type.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -428,6 +428,29 @@ protected virtual TypeCode GetTypeCodeImpl()
return TypeCode.Object;
}

#if !CORECLR
[Intrinsic]
public static bool operator ==(Type? left, Type? right)
{
if (object.ReferenceEquals(left, right))
return true;

if (left is null || right is null)
return false;

// CLR-compat: runtime types are never equal to non-runtime types
// If `left` is a non-runtime type with a weird Equals implementation
// this is where operator `==` would differ from `Equals` call.
if (left.IsRuntimeImplemented() || right.IsRuntimeImplemented())
return false;

return left.Equals(right);
}

[Intrinsic]
public static bool operator !=(Type? left, Type? right) => !(left == right);
#endif

public abstract Guid GUID { get; }

[SupportedOSPlatform("windows")]
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8 changes: 0 additions & 8 deletions src/mono/System.Private.CoreLib/src/System/Type.Mono.cs
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Expand Up @@ -133,13 +133,5 @@ internal virtual FieldInfo GetField(FieldInfo fromNoninstanciated)

[MethodImplAttribute(MethodImplOptions.InternalCall)]
private static extern Type internal_from_handle(IntPtr handle);

[Intrinsic]
public static bool operator ==(Type? left, Type? right) => left == right;

public static bool operator !=(Type? left, Type? right)
{
return !(left == right);
}
}
}
2 changes: 0 additions & 2 deletions src/mono/mono/mini/interp/transform.c
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Expand Up @@ -2417,8 +2417,6 @@ interp_handle_intrinsics (TransformData *td, MonoMethod *target_method, MonoClas
} else if (in_corlib && !strcmp (klass_name_space, "System") && !strcmp (klass_name, "RuntimeMethodHandle") && !strcmp (tm, "GetFunctionPointer") && csignature->param_count == 1) {
// We must intrinsify this method on interp so we don't return a pointer to native code entering interpreter
*op = MINT_LDFTN_DYNAMIC;
} else if (in_corlib && target_method->klass == mono_defaults.systemtype_class && !strcmp (target_method->name, "op_Equality")) {
*op = MINT_CEQ_P;
} else if (in_corlib && target_method->klass == mono_defaults.object_class) {
if (!strcmp (tm, "InternalGetHashCode"))
*op = MINT_INTRINS_GET_HASHCODE;
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7 changes: 0 additions & 7 deletions src/mono/mono/mini/intrinsics.c
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Expand Up @@ -1798,13 +1798,6 @@ mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSign
return ins;
}
}
} else if (cmethod->klass == mono_defaults.systemtype_class && !strcmp (cmethod->name, "op_Equality")) {
EMIT_NEW_BIALU (cfg, ins, OP_COMPARE, -1, args [0]->dreg, args [1]->dreg);
MONO_INST_NEW (cfg, ins, OP_PCEQ);
ins->dreg = alloc_preg (cfg);
ins->type = STACK_I4;
MONO_ADD_INS (cfg->cbb, ins);
return ins;
} else if (((!strcmp (cmethod_klass_image->assembly->aname.name, "MonoMac") ||
!strcmp (cmethod_klass_image->assembly->aname.name, "monotouch")) &&
!strcmp (cmethod_klass_name_space, "XamCore.ObjCRuntime") &&
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