[PATCH] D53627: [HotColdSplitting] Identify larger cold regions using domtree queries

[Vedant Kumar via Phabricator via llvm-commits]

vsk updated this revision to Diff 170800.
vsk edited the summary of this revision.
vsk added a comment.

- Before this patch, 47KB of text was outlined in a test-suite run (X86, -Os, LNT + externals). After this patch, 134KB was outlined, so roughly a ~3x improvement.
- Fix a typo in a comment.


https://reviews.llvm.org/D53627

Files:
  llvm/lib/Transforms/IPO/HotColdSplitting.cpp
  llvm/test/Transforms/HotColdSplit/do-not-split.ll
  llvm/test/Transforms/HotColdSplit/multiple-exits.ll
  llvm/test/Transforms/HotColdSplit/outline-if-then-else.ll
  llvm/test/Transforms/HotColdSplit/outline-while-loop.ll
  llvm/test/Transforms/HotColdSplit/split-cold-1.ll

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