[test] Temporarily xfail tests broken by lack of is_same_metatype use

Author: lorentey

test/SILOptimizer/compare_types.swift

@@ -1,5 +1,8 @@
 // RUN: %target-swift-frontend -O -emit-sil %s | %FileCheck %s
 
+// is_same_metatype builtin is no longer used due to rdar://145707064 (Builtin.is_same_metatype should support noncopyable/nonescapable types)
+// XFAIL: rdar145707064
+
 // Check type equality related optimizations.
 
 // CHECK-LABEL: sil @{{.*}}areEqualTypes1{{.*}} : $@convention(thin)

test/SILOptimizer/existential_metatype.swift

@@ -1,4 +1,8 @@
 // RUN: %target-swift-frontend %s -O -Xllvm -sil-print-types -emit-sil -parse-as-library | %FileCheck %s
+
+// is_same_metatype builtin is no longer used due to rdar://145707064 (Builtin.is_same_metatype should support noncopyable/nonescapable types)
+// XFAIL: rdar145707064
+
 protocol SomeP {}
 
 public enum SpecialEnum : SomeP {}

test/SILOptimizer/onone_simplifications.swift

@@ -2,6 +2,9 @@
 
 // REQUIRES: swift_in_compiler
 
+// is_same_metatype builtin is no longer used due to rdar://145707064 (Builtin.is_same_metatype should support noncopyable/nonescapable types)
+// XFAIL: rdar145707064
+
 // CHECK-LABEL: sil [transparent] @$s4test9checkTypeySixs17FixedWidthIntegerRzlF
 @_transparent
 public func checkType<A: FixedWidthInteger>(_ a: A) -> Int {