[clang] [Clang] Implement labelled type filtering for overflow/truncation sanitizers w/ SSCLs (PR #107332)

[Kees Cook via cfe-commits]

kees wrote:

> Thankfully, this PR and my other PR (WIP) leave the door open. You can ignore all types and then mark a few as `no_wraps` or you can sanitize all types (the default) and mark a few as `wraps`.

Right, while I want to go full instrumentation, it's just not going to happen in the Linux kernel. We're going to need both options so that we can slowly overlap coverage until we've squeezed out all the unexpected wrap-around.


https://github.com/llvm/llvm-project/pull/107332