[compiler-rt] [asan] Implement interception on AIX (PR #131870)

[Hubert Tong via llvm-commits]

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@@ -56,7 +68,8 @@ void InitializePlatformInterceptors();
 #    define ASAN_INTERCEPT_SWAPCONTEXT 0
 #  endif
 
-#  if !SANITIZER_WINDOWS
+// AIX currently can't retrieve the address of siglongjmp
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hubert-reinterpretcast wrote:

Add TODO comment re: `sigsetjmpx`.

https://github.com/llvm/llvm-project/pull/131870