[clang] [compiler-rt] [llvm] [TSan] Add escape analysis for redundant instrumentation elimination (PR #169896)

[Alexey Paznikov via cfe-commits]

apaznikov wrote:

Gentle ping. @vitalybuka, @dvyukov , @melver — I have addressed the previous feedback by extracting the Escape Analysis into this standalone patch and moving it to llvm/Analysis. The TSan-specific integration will be moved to a follow-up patch to keep this one focused on the analysis itself.

https://github.com/llvm/llvm-project/pull/169896