Disable several Backtracing tests on Linux AArch64.

Author: tshortli

test/Backtracing/Crash.swift

@@ -20,6 +20,9 @@
 // REQUIRES: backtracing
 // REQUIRES: OS=macosx || OS=linux-gnu
 
+// rdar://110743884
+// UNSUPPORTED: OS=linux-gnu && CPU=aarch64
+
 func level1() {
   level2()
 }

test/Backtracing/CrashAsync.swift

@@ -15,6 +15,9 @@
 // REQUIRES: backtracing
 // REQUIRES: OS=macosx || OS=linux-gnu
 
+// rdar://110743884
+// UNSUPPORTED: OS=linux-gnu && CPU=aarch64
+
 @available(SwiftStdlib 5.1, *)
 func crash() {
   let ptr = UnsafeMutablePointer<Int>(bitPattern: 4)!

test/Backtracing/CrashWithThunk.swift

@@ -11,6 +11,9 @@
 // REQUIRES: backtracing
 // REQUIRES: OS=macosx || OS=linux-gnu
 
+// rdar://110743884
+// UNSUPPORTED: OS=linux-gnu && CPU=aarch64
+
 struct Foo<T> {
   var value: T
 }

test/Backtracing/Overflow.swift

@@ -9,6 +9,10 @@
 // REQUIRES: executable_test
 // REQUIRES: backtracing
 // REQUIRES: OS=macosx || OS=linux-gnu
+
+// rdar://110743884
+// UNSUPPORTED: OS=linux-gnu && CPU=aarch64
+
 var x: UInt = 0
 
 func level1() {

test/Backtracing/StackOverflow.swift

@@ -12,6 +12,9 @@
 // REQUIRES: backtracing
 // REQUIRES: OS=macosx || OS=linux-gnu
 
+// rdar://110743884
+// UNSUPPORTED: OS=linux-gnu && CPU=aarch64
+
 func recurse(_ level: Int) {
   if level % 100000 == 0 {
     print(level)