[llvm] [TSan] Add dominance-based redundant instrumentation elimination (PR #169897)

[Alexey Paznikov via llvm-commits]

apaznikov wrote:


Hi @vitalybuka, @fmayer,
 
I have updated the PR and force-pushed the clean commit to address all of your comments:
 
1. I've moved the detailed implementation notes from the PR description directly into the source code. I also simplified the PR description.
2. Since the optimization is now enabled by default, I corrected the commit message and PR description (as suggested by @fmayer).
3. I removed the redundant "Implementation" section from (as suggested by @fmayer).

Thank you both for the great feedback!


https://github.com/llvm/llvm-project/pull/169897