[PATCH] D43876: [LoopUnroll] Peel off iterations if it makes conditions true/false.

[Sam Parker via Phabricator via llvm-commits]

samparker added a comment.

Just FYI, I am also currently working on a pass to handle slightly more generic cases within the loop body, such like:

for (unsigned i = 0; i; i < 1000; ++i) {

  if (i < M)
  ... something
  else
  ... something else

}

My transformation operates on the unrolled version and also attempts to remove selects if the loop body has been simplified into one block. Hopefully I will be able to get an initial version up for review and discussion next week.


https://reviews.llvm.org/D43876