[llvm] [SandboxVec] Boilerplate (PR #107431)

[via llvm-commits]

vporpo wrote:

> The vectorizer is going to be spread of several files and some files will be added to the generic sandbox directory?

Not sure what you mean by `generic sandbox directory`.

There will be a number of SandboxVectorizer-specific files living in `Vectorize/SandboxVectorizer`. This will include several components of the vectorizer, and a list of vectorization passes which will be called by the sandbox-vectorizer speicific pass manager.


https://github.com/llvm/llvm-project/pull/107431