[clang] [compiler-rt] [tsan] Add simulation to TSAN (PR #183200)

[Chris Cotter via cfe-commits]

ccotter wrote:

> > Sorry the review took so long. I hope the code hasn't changed much and there won't be too many merge conflicts. Overall it looks good to me. @vitalybuka please merge this once comments are resolved.
> 
> 
> 
> If it's not urgent, I'd like to do so in a couple of weeks.

I am working through the comments and will comment when they are all addressed and commits pushed. I'll try to get that done in the next couple days. The review is not urgent

https://github.com/llvm/llvm-project/pull/183200