[compiler-rt] [compiler-rt] [Darwin] Strip MTE tags from ASAN and TSAN (PR #166453)

[Dan Blackwell via llvm-commits]

DanBlackwell wrote:

> Would `StripTag` be better off in sanitizer_common?
> 
> P.S. HWASan has a similar function, `UntagAddr`.

This is true, but HWASan uses all 8 bits of TBI [63:56]; while MTE uses only [59:56]. Perhaps `StripTag` should be named `StripMTEtag` in order to avoid future confusion? I do agree that this could move up to sanitizer_common.

https://github.com/llvm/llvm-project/pull/166453