[compiler-rt] [rtsan] Add option to allow printing of duplicate stacks (PR #117069)

[Chris Apple via llvm-commits]

cjappl wrote:

> > . I think it may just be better to leave it to the branch predictor anyway.
> 
> It is up to the branch predictor either way to predict which branch to take, but up to the compiler to lay out the code such that the fallthrough is the common case.

Makes sense - should I change anything about the code to make this easier for the compiler to deduce? 

https://github.com/llvm/llvm-project/pull/117069