Julian Lettner beafd235a7 [TSan] Refactor ExternalAccess() to avoid unnecessary pop/push tag [NFC] ...

* Avoid unnecessary frame & tag push/pops if memory access is ignored
* Rename function and add comment to make it clearer what the code does
* Make helper functions static and move inside `#if !SANITIZER_GO`

Differential Revision: https://reviews.llvm.org/D146670

2023-03-24 11:17:40 -07:00

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