Reapply: Autogen more vectorizer tests in advance of D115387.

Drop changes to consecutive-ptr-uniforms.ll since that test checks boths IR output and debug messages.  I'd missed this in the original commit, and Florian pointed it out in post-commit review.

Original commit message:

These are the ones my first round of scripting couldn't handle that required a bit of manual messaging.  This should be the last batch in llvm-check.

This reverts commit bbba8676.