[llvm] Adding Matching and Inference Functionality to Propeller-PR3: Read basic block hashes from propeller profile. (PR #164223)

[via llvm-commits]

wdx727 wrote:

> FYI, I simplified the test here to satisfy the buildbots: [4afb0e6f](https://github.com/llvm/llvm-project/commit/4afb0e6f) We can revisit the issue in later PRs when the hash is actually checked.

Thanks.

https://github.com/llvm/llvm-project/pull/164223