[llvm] [ASan][Windows] Fixing Windows shadow memory address for arm64 (PR #184902)

[Thurston Dang via llvm-commits]

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+; Test using dynamic shadow address on Windows
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thurstond wrote:

Nit: there is already `llvm/test/Instrumentation/AddressSanitizer/basic-msvc64.ll`. Could that be generalized to use the two `RUN: ... -mtriple` lines instead of adding this extra test?

https://github.com/llvm/llvm-project/pull/184902