[llvm] [llvm] Implement address sanitizer on AIX (2/3) (PR #129926)

[Vitaly Buka via llvm-commits]

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@@ -468,6 +473,7 @@ namespace {
 ///   shadow = (mem >> Scale) + &__asan_shadow
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vitalybuka wrote:

Can you please explain HighBits here?

https://github.com/llvm/llvm-project/pull/129926