[PATCH] D42600: [WIP][Shrink-wrap]split restore point

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml updated this revision to Diff 134496.
junbuml added a comment.

Based on the comments from Francis and Quentin, I tried to split the restore block only when we know that the block spilt is used as restore point.  After performing current shrink wrapping, I ran post shrinking to see if we can shrink save point further by splitting restore point.  Currently, this update is still WIP because I do this in shrink wrapping pass.  If this approach is generally reasonable and we need to keep the shrink-wrap pass as an analysis pass, then I will move this in a new pass between shrink-wrap and PEI.


https://reviews.llvm.org/D42600

Files:
  lib/CodeGen/ShrinkWrap.cpp
  test/CodeGen/AArch64/post-shrink-wrap-split-restore.ll

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