[llvm] [asan] Disable instrumentation for available_externally global with COFF (PR #81109)

[Wu Yingcong via llvm-commits]

yingcong-wu wrote:

Hi @MaskRay , could you please help land this patch?


> basic-msvc64.ll may be a better file for this test since basic.ll tests ELF available_externally.

I think basic.ll and basic-msvc64.ll are about testing function instrumentation. So I would like to keep the test in the global related test. But I can move the test to basic-msvc64.ll if you want me to do so.

https://github.com/llvm/llvm-project/pull/81109