tree a7247c64bb5d7fc66465e4aae4f38107b970aa24
parent 343f5446a5594f3e2b0b7d2aafbd348ca5e9d82f
author Michael Kruse <llvm-project@meinersbur.de> 1632349636 -0500
committer Copybara-Service <copybara-worker@google.com> 1632449724 -0700

[Polly] Implement user-directed loop distribution/fission.

This is a simple version without the possibility to define distribute
points or followup-transformations. However, it is the first
transformation that has to check whether the transformation is correct.

It interprets the same metadata as the LoopDistribute pass.

Re-apply after revert in c7bcd72a38bcf99e03e4651ed5204d1a1f2bf695 with
fix: Take isBand out of #ifndef NDEBUG since it now is used
unconditionally.
GitOrigin-RevId: e470f9268a448fedea25289ec343f82ff52ccc36