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

[Thurston Dang via llvm-commits]

thurstond 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].

Ah, good point!

> Perhaps `StripTag` should be named `StripMTEtag` in order to avoid future confusion?

Sure. I would also be partial to something like "UntagMTEAddr", for consistency with HWASan.


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