8b51340740
This revision adds vector transform operations that allow us to better inspect the composition of various lowerings that were previously very opaque. This commit is NFC in that it does not change patterns beyond adding `rewriter.notifyFailure` messages and it does not change the tests beyond breaking them into pieces and using transforms instead of throwaway opaque test passes. Reviewed By: ftynse, springerm Co-authored-by: Alex Zinenko <zinenko@google.com> Differential Revision: https://reviews.llvm.org/D146755